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article stringlengths 4.36k 149k | summary stringlengths 32 3.35k | section_headings listlengths 1 91 | keywords listlengths 0 141 | year stringclasses 13
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Orientia tsutsugamushi is a clinically important but neglected obligate intracellular bacterial pathogen of the Rickettsiaceae family that causes the potentially life-threatening human disease scrub typhus . In contrast to the genome reduction seen in many obligate intracellular bacteria , early genetic studies of Orie... | Orientia tsutsugamushi is an obligate intracellular bacterial pathogen , and the causative agent of the human disease scrub typhus . This vector-borne bacterial infection can be life-threatening if not treated rapidly with appropriate antibiotics . Orientia is endemic across large parts of Asia and is estimated to infe... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"bacteriology",
"sequencing",
"techniques",
"geomorphology",
"taxonomy",
"medicine",
"and",
"health",
"sciences",
"pathology",
"and",
"laboratory",
"medicine",
"landforms",
"intracellular",
"pathogens",
"pathogens",
"topography",
"microbiology",
"genome",
"sequencing",
"phy... | 2018 | Long-read whole genome sequencing and comparative analysis of six strains of the human pathogen Orientia tsutsugamushi |
We developed a bacterial genetic system based on translation of the his operon leader peptide gene to determine the relative speed at which the ribosome reads single or multiple codons in vivo . Low frequency effects of so-called “silent” codon changes and codon neighbor ( context ) effects could be measured using this... | The central dogma of molecular biology states that DNA is transcribed into RNA , which is translated into protein . The process of translation from messenger RNA ( mRNA ) into protein by the ribosome is a complicated process involving transfer RNA intermediates with attached amino acids that must recognize 3 base codon... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biology",
"and",
"life",
"sciences"
] | 2014 | The Effects of Codon Context on In Vivo Translation Speed |
Shigella infection , the cause of bacillary dysentery , induces caspase-1 activation and cell death in macrophages , but the precise mechanisms of this activation remain poorly understood . We demonstrate here that caspase-1 activation and IL-1β processing induced by Shigella are mediated through Ipaf , a cytosolic pat... | Shigella are bacterial pathogens that are the cause of bacillary dysentery known as shigellosis . A crucial aspect of the propensity of Shigella to cause diseases lies in its ability to invade the cytoplasm of epithelial cells as well as macrophages . The bacterial invasion of macrophages induces pyroptosis , the proin... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"infectious",
"diseases",
"cell",
"biology",
"mammals",
"immunology",
"mus",
"(mouse)",
"eubacteria"
] | 2007 | Differential Regulation of Caspase-1 Activation, Pyroptosis, and Autophagy via Ipaf and ASC in Shigella-Infected Macrophages |
Scrub typhus is a common and underdiagnosed cause of febrile illness in Southeast Asia , caused by infection with Orientia tsutsugamushi . Inoculation of the organism at a cutaneous mite bite site commonly results in formation of a localized pathological skin reaction termed an eschar . The site of development of the o... | Scrub typhus is an infectious disease common in Southeast Asia , caused by the intracellular bacteria Orientia tsutsugamushi . These microorgansims infect humans through chigger mite bites , after which O . tsutsugamushi invades cells in the dermis , causing an inflammatory lesion called an eschar . Other rickettsia ca... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"dermatology",
"infectious",
"diseases",
"clinical",
"immunology",
"immunology"
] | 2012 | Orientia tsutsugamushi in Human Scrub Typhus Eschars Shows Tropism for Dendritic Cells and Monocytes Rather than Endothelium |
Influenza disease is a global health issue that causes significant morbidity and mortality through seasonal epidemics . Currently , inactivated influenza virus vaccines given intramuscularly or live attenuated influenza virus vaccines administered intranasally are the only approved options for vaccination against influ... | Influenza virus remains a global health risk causing significant morbidity and mortality each year , with the elderly ( >65 years ) and the very young particularly prone to severe respiratory disease . Scientists are working to develop highly efficacious vaccines capable of eliciting broad cross-clade protection from i... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"humoral",
"immunity",
"medicine",
"immune",
"cells",
"immune",
"activation",
"influenza",
"immunity",
"to",
"infections",
"immunology",
"adaptive",
"immunity",
"immune",
"defense",
"immunoregulation",
"infectious",
"disease",
"control",
"immunomodulation",
"immunotherapy",... | 2014 | Intranasal Vaccination Promotes Detrimental Th17-Mediated Immunity against Influenza Infection |
Natural Killer ( NK ) cells are crucial in early resistance to murine cytomegalovirus ( MCMV ) infection . In B6 mice , the activating Ly49H receptor recognizes the viral m157 glycoprotein on infected cells . We previously identified a mutant strain ( MCMVG1F ) whose variant m157 also binds the inhibitory Ly49C recepto... | We previously identified a viral murine cytomegalovirus ( MCMV ) strain whose variant m157 immunoevasin can bind the inhibitory Ly49C NK cell receptor in addition to activating Ly49H receptor in B6 mice . Here we show that simultaneous engagement of the two receptors by m157 hampers NK cell activation . Most Ly49H+ NK ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"blood",
"cells",
"innate",
"immune",
"system",
"medicine",
"and",
"health",
"sciences",
"immune",
"cells",
"pathology",
"and",
"laboratory",
"medicine",
"immune",
"activation",
"immunology",
"microbiology",
"cytomegalovirus",
"infection",
"infectious",
"disease",
"cont... | 2014 | Ly49C-Dependent Control of MCMV Infection by NK Cells Is Cis-Regulated by MHC Class I Molecules |
Protein production , genomic RNA replication , and virion assembly during infection by picornaviruses like human rhinovirus and poliovirus take place in the cytoplasm of infected human cells , making them the quintessential cytoplasmic pathogens . However , a growing body of evidence suggests that picornavirus replicat... | We explored the dynamics of host cell protein relocalization from the nucleus to the cytoplasm during an infection by human rhinovirus using quantitative mass spectrometry , confocal imaging , and Western blot analysis . We discovered a highly selective re-equilibration of proteins with known mRNA splicing and transpor... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"medicine",
"and",
"health",
"sciences",
"pathology",
"and",
"laboratory",
"medicine",
"hela",
"cells",
"gene",
"regulation",
"enzymes",
"pathogens",
"biological",
"cultures",
"microbiology",
"enzymology",
"viruses",
"rna",
"viruses",
"cell",
"cultures",
"rhinovirus",
... | 2018 | Exploitation of nuclear functions by human rhinovirus, a cytoplasmic RNA virus |
To provide tight spatiotemporal signaling control , the cyclic adenosine monophosphate ( cAMP ) -dependent protein kinase ( PKA ) holoenzyme typically nucleates a macromolecular complex or a “PKA signalosome . ” Using the RIIβ holoenzyme as a prototype , we show how autophosphorylation/dephosphorylation of the RIIβ sub... | Kinases are important regulators in many cellular signaling processes . They bind to and phosphorylate different substrates to affect distinct signaling events . Usually , a kinase releases its substrate quickly after phosphorylation to ensure fast signaling . However , we find that this is not always true for the prot... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | Single Turnover Autophosphorylation Cycle of the PKA RIIβ Holoenzyme |
Neurobeachin ( Nbea ) regulates neuronal membrane protein trafficking and is required for the development and functioning of central and neuromuscular synapses . In homozygous knockout ( KO ) mice , Nbea deficiency causes perinatal death . Here , we report that heterozygous KO mice haploinsufficient for Nbea have highe... | Body weight and energy balance are under very complex neural , endocrine , and metabolic control . Correspondingly , recent research suggests that hundreds of genes contribute to human obesity and that only a small proportion of them have as yet been identified . Neurobeachin ( Nbea ) is a protein specifically expresse... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"systems",
"biology",
"medicine",
"non-clinical",
"medicine",
"nutrition",
"genetics",
"genetics",
"and",
"genomics",
"biology",
"neuroscience",
"metabolic",
"disorders",
"clinical",
"genetics"
] | 2012 | Neurobeachin, a Regulator of Synaptic Protein Targeting, Is Associated with Body Fat Mass and Feeding Behavior in Mice and Body-Mass Index in Humans |
Soil-transmitted helminths ( STH ) infect nearly 1 . 5 billion individuals globally , and contribute to poor physical and cognitive development in children . STH control programs typically consist of regular delivery of anthelminthic drugs , targeting school-aged children . Expanding STH control programs community-wide... | Soil-transmitted helminth ( STH ) infections are widespread globally , and their health impacts include poor growth and impaired cognitive development in children . STH control programs therefore usually focus on delivering deworming medications to school-aged children . However , expanding such programs to the whole c... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"invertebrates",
"children",
"medicine",
"and",
"health",
"sciences",
"education",
"helminths",
"sociology",
"tropical",
"diseases",
"hookworms",
"social",
"sciences",
"parasitic",
"diseases",
"animals",
"necator",
"americanus",
"health",
"care",
"physiological",
"process... | 2018 | (S)WASH-D for Worms: A pilot study investigating the differential impact of school- versus community-based integrated control programs for soil-transmitted helminths |
Congress created the tropical disease priority review voucher program to stimulate new drug development for tropical diseases . An analysis of the pharmaceutical pipeline indicates that the development of drugs for these tropical diseases has increased . However , the effects of the program are not uniform across all d... | Offering priority review vouchers ( PRVs ) as a reward for developing a drug to treat a tropical or other understudied disease was first introduced by Ridley et al ( 2006 ) . The idea has become popular with lawmakers because it provides a perceived valuable incentive ( vouchers have sold for as much as $350 million ) ... | [
"Abstract",
"Introduction",
"Background",
"Study",
"data",
"and",
"methods",
"Study",
"results",
"Discussion"
] | [
"bacterial",
"diseases",
"infectious",
"diseases",
"medicine",
"and",
"health",
"sciences",
"drug",
"research",
"and",
"development",
"pharmaceutics",
"tuberculosis",
"epidemiology",
"pharmacology",
"tropical",
"diseases",
"malaria",
"drug",
"therapy",
"parasitic",
"disea... | 2018 | Is the priority review voucher program stimulating new drug development for tropical diseases? |
CCL3 is a ligand for the HIV-1 co-receptor CCR5 . There have recently been conflicting reports in the literature concerning whether CCL3-like gene ( CCL3L ) copy number variation ( CNV ) is associated with resistance to HIV-1 acquisition and with both viral load and disease progression following infection with HIV-1 . ... | Host genetic factors are important in determining why some individuals maintain effective control of HIV-1 replication while others do not . Genes implicated in this control include a number associated with the development of classical immune effector responses against HIV-1 infection and others associated with viral e... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"infectious",
"diseases/hiv",
"infection",
"and",
"aids",
"virology/effects",
"of",
"virus",
"infection",
"on",
"host",
"gene",
"expression",
"virology/animal",
"models",
"of",
"infection",
"virology"
] | 2010 | Contributions of Mamu-A*01 Status and TRIM5 Allele Expression, But Not CCL3L Copy Number Variation, to the Control of SIVmac251 Replication in Indian-Origin Rhesus Monkeys |
Genome sequencing data have recently demonstrated that eukaryote evolution has been remarkably influenced by the acquisition of a large number of genes by horizontal gene transfer ( HGT ) across different kingdoms . However , in depth-studies on the physiological traits conferred by these accidental DNA acquisitions ar... | Parasitic wasps are important insect biocontrol agents . These insects are beneficial for the ecological service they provide , which largely contributes to the control of natural populations of their hosts . Paradoxically , they can be beneficial also for non-host individuals attacked by mistake , if these survive aft... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"invertebrates",
"organismal",
"evolution",
"parasite",
"evolution",
"cell",
"processes",
"microbiology",
"animals",
"parasitology",
"developmental",
"biology",
"microbial",
"evolution",
"spodoptera",
"research",
"and",
"analysis",
"methods",
"sequence",
"analysis",
"sequen... | 2019 | Evolution of an insect immune barrier through horizontal gene transfer mediated by a parasitic wasp |
We have mapped a protein interaction network of human homologs of proteins that modify longevity in invertebrate species . This network is derived from a proteome-scale human protein interaction Core Network generated through unbiased high-throughput yeast two-hybrid searches . The longevity network is composed of 175 ... | Studies of longevity in model organisms such as baker's yeast , roundworm , and fruit fly have clearly demonstrated that a diverse array of genetic mutations can result in increased life span . In fact , large-scale genetic screens have identified hundreds of genes that when mutated , knocked down , or deleted will sig... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"genetics",
"and",
"genomics/functional",
"genomics",
"computational",
"biology/signaling",
"networks",
"genetics",
"and",
"genomics/gene",
"expression",
"biotechnology/protein",
"chemistry",
"and",
"proteomics"
] | 2009 | A Human Protein Interaction Network Shows Conservation of Aging Processes between Human and Invertebrate Species |
Inactivation of the Transforming Growth Factor Beta ( TGFβ ) tumor suppressor pathway contributes to the progression of Pancreatic Ductal AdenoCarcinoma ( PDAC ) since it is inactivated in virtually all cases of this malignancy . Genetic lesions inactivating this pathway contribute to pancreatic tumor progression in mo... | Inactivation of the TGFβ tumor suppressor pathway contributes to the progression of Pancreatic Ductal AdenoCarcinoma ( PDAC ) , a devastating malignancy . Transcriptional Intermediary Factor 1γ ( TIF1γ ) has recently been proposed to be involved in TGFβ signaling , a pathway inactivated in virtually all cases of this m... | [
"Abstract",
"Introduction",
"Results/Discussion",
"Materials",
"and",
"Methods"
] | [
"genetics",
"and",
"genomics/disease",
"models",
"genetics",
"and",
"genomics/cancer",
"genetics",
"gastroenterology",
"and",
"hepatology/pancreas"
] | 2009 | Inactivation of TIF1γ Cooperates with KrasG12D to Induce Cystic Tumors of the Pancreas |
Tuberculosis ( TB ) granulomas are organized collections of immune cells comprised of macrophages , lymphocytes and other cells that form in the lung as a result of immune response to Mycobacterium tuberculosis ( Mtb ) infection . Formation and maintenance of granulomas are essential for control of Mtb infection and ar... | Tuberculosis is a common and deadly infectious disease caused by a highly successful bacterium , Mycobacterium tuberculosis ( Mtb ) . Multiple host immune factors control the formation of a self-organizing aggregate of immune cells termed a granuloma in the lungs after inhalation of Mtb . One such factor , tumor necros... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"biophysics",
"infectious",
"diseases",
"immunology",
"computational",
"biology/systems",
"biology"
] | 2010 | Identification of Key Processes that Control Tumor Necrosis Factor Availability in a Tuberculosis Granuloma |
The Caenorhabditis elegans pharynx ( or foregut ) functions as a pump that draws in food ( bacteria ) from the environment . While the “organ identity factor” PHA-4 is critical for formation of the C . elegans pharynx as a whole , little is known about the specification of distinct cell types within the pharynx . Here ... | To make an organ , cells must be instructed to be part of a common structure yet must also be assigned specific roles or identities within that structure . For example , the stomach contains a variety of different kinds of cells , including muscles , nerves , and glands . This same complexity is seen even in relatively... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"computational",
"biology/sequence",
"motif",
"analysis",
"genetics",
"and",
"genomics/gene",
"expression",
"developmental",
"biology/cell",
"differentiation",
"genetics",
"and",
"genomics/gene",
"function",
"developmental",
"biology/molecular",
"development",
"developmental",
... | 2008 | The HLH-6 Transcription Factor Regulates C. elegans Pharyngeal Gland Development and Function |
Enterobacter sp . 638 is an endophytic plant growth promoting gamma-proteobacterium that was isolated from the stem of poplar ( Populus trichocarpa×deltoides cv . H11-11 ) , a potentially important biofuel feed stock plant . The Enterobacter sp . 638 genome sequence reveals the presence of a 4 , 518 , 712 bp chromosome... | Poplar is considered as the model tree species for the production of lignocellulosic biomass destined for biofuel production . The plant growth promoting endophytic bacterium Enterobacter sp . 638 can improve the growth of poplar on marginal soils by as much as 40% . This prompted us to sequence the genome of this stra... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"microbiology/plant-biotic",
"interactions",
"microbiology/environmental",
"microbiology",
"genetics",
"and",
"genomics/genome",
"projects",
"microbiology",
"genetics",
"and",
"genomics"
] | 2010 | Genome Sequence of the Plant Growth Promoting Endophytic Bacterium Enterobacter sp. 638 |
The pathological outcomes of schistosomiasis are largely dependent on the molecular and cellular mechanisms of the host immune response . In this study , we investigated the contribution of variations in host gene expression to the contrasting hepatic pathology observed between two inbred mouse strains following Schist... | Schistosomiasis is a significant cause of morbidity and mortality in the tropical world although its true burden has been historically underestimated . Millions of people currently endure severe pathology as a result of schistosome infections , although some individuals appear to be less susceptible to infection despit... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"genome",
"expression",
"analysis",
"immunology",
"microbiology",
"host-pathogen",
"interaction",
"parasitic",
"diseases",
"parasitology",
"neglected",
"tropical",
"diseases",
"infectious",
"diseases",
"gene",
"expression",
"biology",
"pathogenesis",
"molecular",
... | 2011 | Differential Expression of Chemokine and Matrix Re-Modelling Genes Is Associated with Contrasting Schistosome-Induced Hepatopathology in Murine Models |
Drosophila brains contain numerous neurons that form complex circuits . These neurons are derived in stereotyped patterns from a fixed number of progenitors , called neuroblasts , and identifying individual neurons made by a neuroblast facilitates the reconstruction of neural circuits . An improved MARCM ( mosaic analy... | A brain consists of numerous , potentially individually unique neurons that derive from a limited number of progenitors . It has been shown in various model organisms that specific neurons arise in a lineage made by a repeatedly renewing progenitor at specific times of development . However , except in the worm C . ele... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"neuroscience/neurodevelopment"
] | 2010 | A Complete Developmental Sequence of a Drosophila Neuronal Lineage as Revealed by Twin-Spot MARCM |
Schistosomiasis is a parasitic disease which affects almost 300 million people worldwide each year . It is highly endemic in Mozambique . Prevention and control of schistosomiasis relies mainly on mass drug administration ( MDA ) , as well as adoption of basic sanitation practices . Individual and community perceptions... | Schistosomiasis is one of the 17 ‘neglected tropical diseases’ as classified by the World Health Organization . It is a parasitic disease of poverty that affects around 300 million people each year , causing chronic ill-health and severe morbidity . The disease , which is spread through contact with freshwater contamin... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"children",
"medicine",
"and",
"health",
"sciences",
"education",
"sociology",
"tropical",
"diseases",
"social",
"sciences",
"parasitic",
"diseases",
"age",
"groups",
"research",
"design",
"pharmaceutics",
"neglected",
"tropical",
"diseases",
"surveys",
"infectious",
"d... | 2016 | Have You Heard of Schistosomiasis? Knowledge, Attitudes and Practices in Nampula Province, Mozambique |
Recombination is an essential process in eukaryotes , which increases diversity by disrupting genetic linkage between loci and ensures the proper segregation of chromosomes during meiosis . In the human genome , recombination events are clustered in hotspots , whose location is determined by the PRDM9 protein . There i... | In eukaryotic genomes , recombination plays a central role by ensuring the proper segregation of chromosomes during meiosis and increasing genetic diversity at the population scale . Recombination events are not uniformly distributed along chromosomes , but cluster in narrow regions called hotspots . The absence of ove... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"biochemistry",
"genomics",
"genetic",
"polymorphism",
"genome",
"evolution",
"human",
"genomics",
"genetics",
"biology",
"and",
"life",
"sciences",
"dna",
"population",
"genetics",
"dna",
"recombination",
"evolutionary",
"biology",
"molecular",
"evolution",
"computationa... | 2014 | The Red Queen Model of Recombination Hotspots Evolution in the Light of Archaic and Modern Human Genomes |
Genetic recombination shapes the diversity of RNA viruses , including enteroviruses ( EVs ) , which frequently have mosaic genomes . Pathogenic circulating vaccine-derived poliovirus ( cVDPV ) genomes consist of mutated vaccine poliovirus ( PV ) sequences encoding capsid proteins , and sequences encoding nonstructural ... | Recombination shapes viral genomes , including those of the pathogenic circulating vaccine-derived polioviruses ( cVDPVs ) , responsible for poliomyelitis outbreaks . The genomes of cVDPVs consist of sequences from vaccine poliovirus ( PV ) and other enteroviruses ( EVs ) . We investigated the plasticity of cVDPV genom... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | Evolution and Emergence of Enteroviruses through Intra- and Inter-species Recombination: Plasticity and Phenotypic Impact of Modular Genetic Exchanges in the 5’ Untranslated Region |
Cystic echinococcosis ( CE ) caused by the Echinococcus granulosus , is a major public health problem worldwide , including India . The different genotypes of E . granulosus responsible for human hydatidosis have been reported from endemic areas throughout the world . However , the genetic characterization of E . granu... | Cystic echinococcosis caused by Echinococcus granulosus is a widespread zoonotic disease . This cestode parasite is a complex of genetic variants and to date , ten distinct genotypes ( genotypes G1–G10 ) have been identified on the basis of mitochondrial DNA sequences . The strain variation in E . granulosus may influe... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"biology"
] | 2013 | Molecular Characterization of Echinococcus granulosus Cysts in North Indian Patients: Identification of G1, G3, G5 and G6 Genotypes |
The current millennium has seen a steep rise in the number , size and case-fatalities of cholera outbreaks in many African countries . Over 40 , 000 cases of cholera were reported from Nigeria in 2010 . Variants of Vibrio cholerae O1 El Tor biotype have emerged but very little is known about strains causing cholera out... | Cholera is acute watery diarrhoea , severely dehydrating , caused by Vibrio cholerae , a bacterium ubiquitous in aquatic environments . Cholera is a global threat , particularly , in areas where sanitary conditions , such as drinking water and sewage , are not available . Seven cholera pandemics , all originating in As... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"bacteriology",
"medicine",
"public",
"health",
"and",
"epidemiology",
"infectious",
"disease",
"epidemiology",
"microbiology",
"clinical",
"epidemiology",
"molecular",
"genetics",
"bacterial",
"pathogens",
"genetic",
"epidemiology",
"molecular",
"epidemiology",
"epidemiology... | 2013 | Cholera Outbreaks in Nigeria Are Associated with Multidrug Resistant Atypical El Tor and Non-O1/Non-O139 Vibrio cholerae |
Klebsiella pneumoniae causes significant morbidity and mortality worldwide , particularly amongst hospitalized individuals . The principle mechanism for pathogenesis in hospital environments involves the formation of biofilms , primarily on implanted medical devices . In this study , we constructed a transposon mutant ... | Biofilms are surface-associated communities of microorganisms . Biofilm-associated bacteria are protected from host defenses and antibiotics and are the cause of many infections . Klebsiella pneumoniae is primarily a hospital-acquired bacterial pathogen that causes pneumonia , urinary tract infections and septicemia . ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"bacteriology",
"medicine",
"microbiology",
"dna",
"transcription",
"bacterial",
"diseases",
"bacterial",
"pathogens",
"infectious",
"diseases",
"cell",
"adhesion",
"gene",
"expression",
"klebsiella",
"pneumonia",
"biology",
"molecular",
"biology",
"bacterial",
"biofilms",
... | 2011 | MrkH, a Novel c-di-GMP-Dependent Transcriptional Activator, Controls Klebsiella pneumoniae Biofilm Formation by Regulating Type 3 Fimbriae Expression |
Influenza A viruses are major pathogens in humans and in animals , whose genome consists of eight single-stranded RNA segments of negative polarity . Viral mRNAs are synthesized by the viral RNA-dependent RNA polymerase in the nucleus of infected cells , in close association with the cellular transcriptional machinery ... | Influenza A viruses are major pathogens which pose continuous animal and public health challenges . Enhancing the knowledge of their life cycle , and especially the understanding of how viral components interact with the host cell , is essential to achieve better prevention and treatment of the disease . The polymerase... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biochemistry",
"medicine",
"and",
"health",
"sciences",
"molecular",
"cell",
"biology",
"protein",
"interactions",
"pathology",
"and",
"laboratory",
"medicine",
"cell",
"biology",
"host-pathogen",
"interactions",
"proteins",
"virology",
"gene",
"expression",
"genetics",
... | 2014 | Recruitment of RED-SMU1 Complex by Influenza A Virus RNA Polymerase to Control Viral mRNA Splicing |
Chagasic cardiomyopathy is caused by Trypanosoma cruzi infection . Poly ( ADP-ribose ) polymerase 1 ( PARP1 ) is known for its function in nuclear DNA repair . In this study , we have employed genetic deletion and chemical inhibition approaches to determine the role of PARP1 in maintaining mtDNA dependent mitochondrial... | Chagasic cardiomyopathy is caused by Trypanosoma cruzi infection , and it affects ~7 million individuals on the American continent . Poly ( ADP-ribose ) polymerase 1 ( PARP1 ) is a nuclear DNA repair enzyme . In this study , we demonstrate that PARP1 tends to be localized to mitochondria in chagasic myocardium . The mt... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results",
"Discussion"
] | [
"medicine",
"and",
"health",
"sciences",
"respiratory",
"infections",
"mitochondrial",
"dna",
"cardiovascular",
"anatomy",
"tropical",
"diseases",
"parasitic",
"diseases",
"parasitic",
"protozoans",
"pulmonology",
"protozoans",
"heart",
"forms",
"of",
"dna",
"mitochondria... | 2018 | PARP1 depletion improves mitochondrial and heart function in Chagas disease: Effects on POLG dependent mtDNA maintenance |
DNA repair and other chromatin-associated processes are carried out by enzymatic macromolecular complexes that assemble at specific sites on the chromatin fiber . How the rate of these molecular machineries is regulated by their constituent parts is poorly understood . Here we quantify nucleotide-excision DNA repair in... | The nucleotide-excision repair pathway removes mutagen-inflicted DNA lesions from the genome . Repair proteins recognize DNA lesions and form multi-protein complexes that catalyze the excision of the lesion and the re-synthesis of the excised part . Imaging the dynamics of fluorescently labeled repair proteins in livin... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"systems",
"biology",
"biochemical",
"simulations",
"nucleic",
"acids",
"dna",
"dna",
"repair",
"biology",
"computational",
"biology",
"molecular",
"cell",
"biology"
] | 2014 | Robustness of DNA Repair through Collective Rate Control |
The nervous and immune systems influence each other , allowing animals to rapidly protect themselves from changes in their internal and external environment . However , the complex nature of these systems in mammals makes it difficult to determine how neuronal signaling influences the immune response . Here we show tha... | The nervous and immune systems respond quickly and precisely to changes in the environment . Communication between these systems may underlie neurological disorders such as depression , and explain why environmental factors , such as psychological stress , increase infection susceptibility . What are the molecular mech... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2013 | Serotonergic Chemosensory Neurons Modify the C. elegans Immune Response by Regulating G-Protein Signaling in Epithelial Cells |
We used molecular dynamics ( MD ) simulations to explore the transport of single cations through the channel of the muscle nicotinic acetylcholine receptor ( nAChR ) . Four MD simulations of 16 ns were performed at physiological and hyperpolarized membrane potentials , with and without restraints of the structure , but... | Communication between a cell and its environment relies on channel-forming proteins to provide a low energy pathway for ions to move in and out . Although channel-forming proteins are essential to all life forms , the atomic-scale mechanisms that enable ions to pass through the channel remain elusive due to the lack of... | [
"Abstract",
"Introduction",
"Results/Discussion",
"Methods"
] | [
"homo",
"(human)",
"computational",
"biology"
] | 2008 | Control of Cation Permeation through the Nicotinic Receptor Channel |
The evolution of postzygotic reproductive isolation is an important component of speciation . But before isolation is complete there is sometimes a phase of heterosis in which hybrid fitness exceeds that of the two parental species . The genetics and evolution of heterosis and postzygotic isolation have typically been ... | As populations diverge and ultimately evolve into distinct species , hybrids between them gradually become inviable and infertile . Before this happens , there can be a brief period in which hybrids are actually more fit than their parents , a condition called heterosis or hybrid vigor . This paper describes a model of... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"epistasis",
"mutation",
"substitution",
"mutation",
"heterosis",
"fitness",
"epistasis",
"simulation",
"and",
"modeling",
"natural",
"selection",
"heredity",
"speciation",
"genetics",
"biology",
"and",
"life",
"sciences",
"evolutionary",
"biology",
"evolutionary",
"proce... | 2019 | The evolution of hybrid fitness during speciation |
Facioscapulohumeral muscular dystrophy ( FSHD ) is a common muscle disease whose molecular pathogenesis remains largely unknown . Over-expression of FSHD region gene 1 ( FRG1 ) in mice , frogs , and worms perturbs muscle development and causes FSHD–like phenotypes . FRG1 has been implicated in splicing , and we asked h... | Alternative splicing is a major contributor to the complexity of human cells , and its disruption can lead to a wide range of human disorders . FSHD is one of the most important muscle diseases . While muscle differentiation defects have been widely reported in the disease , the molecular mechanisms responsible are lar... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"medicine",
"gene",
"regulation",
"cell",
"differentiation",
"animal",
"models",
"developmental",
"biology",
"model",
"organisms",
"molecular",
"genetics",
"gene",
"expression",
"gene",
"splicing",
"muscular",
"dystrophies",
"biology",
"mouse",
"molecular",
"biology",
"... | 2013 | Rbfox1 Downregulation and Altered Calpain 3 Splicing by FRG1 in a Mouse Model of Facioscapulohumeral Muscular Dystrophy (FSHD) |
Drosophila melanogaster is a well-studied model organism , especially in the field of neurophysiology and neural circuits . The brain of the Drosophila is small but complex , and the image of a single neuron in the brain can be acquired using confocal microscopy . Analyzing the Drosophila brain is an ideal start to und... | It is now possible to image a single neuron in the fruit fly brain . However , manually reconstructing neuronal structures is tremendously time consuming . The proposed method avoids user interventions by first automatically identifying the end points and detecting the appropriate representative point of the soma , and... | [
"Abstract",
"Introduction",
"Results",
"Methods",
"Discussion"
] | [
"computer",
"science",
"image",
"processing",
"signal",
"processing",
"software",
"engineering",
"software",
"tools",
"engineering"
] | 2012 | High-throughput Computer Method for 3D Neuronal Structure Reconstruction from the Image Stack of the Drosophila Brain and Its Applications |
Recent analyses of human-associated bacterial diversity have categorized individuals into ‘enterotypes’ or clusters based on the abundances of key bacterial genera in the gut microbiota . There is a lack of consensus , however , on the analytical basis for enterotypes and on the interpretation of these results . We tes... | Recent work has suggested that individuals can be classified into ‘enterotypes’ based on the abundance of key bacterial taxa in gut microbial communities . However , the generality of enterotypes across populations , and the existence of similar cluster types for other body sites , remains to be evaluated . We combined... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"and",
"Discussion"
] | [
"biology",
"computational",
"biology",
"microbiology"
] | 2013 | A Guide to Enterotypes across the Human Body: Meta-Analysis of Microbial Community Structures in Human Microbiome Datasets |
Borrelia turicatae , an agent of tick-borne relapsing fever , is an example of a pathogen that can adapt to disparate conditions found when colonizing the mammalian host and arthropod vector . However , little is known about the genetic factors necessary during the tick-mammalian infectious cycle , therefore we develop... | Relapsing fever spirochetes are a global yet neglected pathogen causing recurrent febrile episodes , nausea , vomiting , and pregnancy complications including miscarriage . Most species of tick-borne relapsing fever spirochetes are maintained in enzootic cycles , and given an approximately 20 year life span , the arthr... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [] | 2013 | Development of Genetic System to Inactivate a Borrelia turicatae Surface Protein Selectively Produced within the Salivary Glands of the Arthropod Vector |
Epilepsy will affect nearly 3% of people at some point during their lifetime . Previous copy number variants ( CNVs ) studies of epilepsy have used array-based technology and were restricted to the detection of large or exonic events . In contrast , whole-genome sequencing ( WGS ) has the potential to more comprehensiv... | Epilepsy is a common neurological disorder affecting around 3% of the population . In some cases , epilepsy is caused by brain trauma or other brain anomalies but there are often no clear causes . Genetic factors have been associated with epilepsy in the past such as rare genetic variations found by linkage studies as ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"computer",
"applications",
"medicine",
"and",
"health",
"sciences",
"population",
"genetics",
"catalogs",
"twins",
"genomic",
"databases",
"developmental",
"biology",
"genome",
"analysis",
"population",
"biology",
"research",
"and",
"analysis",
"methods",
"epilepsy",
"... | 2018 | Global characterization of copy number variants in epilepsy patients from whole genome sequencing |
The basal ganglia ( BG ) , serving as an intermediate bridge between the cerebral cortex and thalamus , are believed to play crucial roles in controlling absence seizure activities generated by the pathological corticothalamic system . Inspired by recent experiments , here we systematically investigate the contribution... | One prevailing viewpoint on the genesis of absence seizures is suggested to involve the pathological interactions within the corticothalamic system . As intriguing deep nuclei of brain , the basal ganglia are reported to play crucial roles in controlling absence seizures through multiple nigro-thalamic pathways . Besid... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | Critical Roles of the Direct GABAergic Pallido-cortical Pathway in Controlling Absence Seizures |
The generation of a RecA filament on single-stranded DNA is a critical step in homologous recombination . Two main pathways leading to the formation of the nucleofilament have been identified in bacteria , based on the protein complexes mediating RecA loading: RecBCD ( AddAB ) and RecFOR . Many bacterial species seem t... | Homologous recombination plays an essential role in maintaining genomic integrity and in allowing genetic diversity within a population . In the case of bacteria , two main pathways for the initiation of recombination have been described . These pathways are defined by the protein complexes , present in the model syste... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"genetics",
"and",
"genomics/microbial",
"evolution",
"and",
"genomics",
"genetics",
"and",
"genomics/gene",
"discovery",
"microbiology",
"genetics",
"and",
"genomics",
"genetics",
"and",
"genomics/bioinformatics"
] | 2008 | Unveiling Novel RecO Distant Orthologues Involved in Homologous Recombination |
The elimination of Triatoma infestans , the main Chagas disease vector in the Gran Chaco region , remains elusive . We implemented an intensified control strategy based on full-coverage pyrethroid spraying , followed by frequent vector surveillance and immediate selective insecticide treatment of detected foci in a wel... | Vector-borne transmission of Chagas disease has not been effectively controlled in large parts of Latin America , particularly in the Gran Chaco ecoregion . To better understand the challenges in this region , we assessed the effectiveness of an intensified insecticide-based spraying strategy in suppressing the major v... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"infectious",
"diseases",
"public",
"health",
"and",
"epidemiology",
"ecology",
"epidemiology",
"biology",
"spatial",
"epidemiology"
] | 2013 | Intensified Surveillance and Insecticide-based Control of the Chagas Disease Vector Triatoma infestans in the Argentinean Chaco |
Neuropeptides play crucial roles in modulating neuronal networks , including changing intrinsic properties of neurons and synaptic efficacy . We previously reported a Caenorhabditis elegans mutant , acr-2 ( gf ) , that displays spontaneous convulsions as the result of a gain-of-function mutation in a neuronal nicotinic... | Imbalanced neuronal circuit activity is considered a major underlying cause in many neurological disorders , such as epilepsy and autism . Neuropeptides are small polypeptides that are released from neurons . They are widely known to provide neuromodulatory functions and have diverse roles in the nervous system . By in... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biology"
] | 2013 | Neuropeptides Function in a Homeostatic Manner to Modulate Excitation-Inhibition Imbalance in C. elegans |
While there has been significant progress in determining the transcriptional cascade involved in terminal adipocyte differentiation , less is known about early events leading to lineage commitment and cell fate choice . It has been recently discovered that zinc finger protein 423 ( Zfp423 ) is an early actor in adipose... | Adipocytes or fat cells derive from the same stem cells that give rise to bone , cartilage , and muscle . Understanding the switch between bone and fat is of particular medical importance , with implications for diseases like osteoporosis and obesity . Here , we have identified a transcription factor called Zfp521 whic... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"developmental",
"biology",
"cell",
"fate",
"determination",
"biology",
"cell",
"differentiation"
] | 2012 | Regulation of Early Adipose Commitment by Zfp521 |
Dengue is the most prevalent arboviral infection , affecting millions of people every year . Attempts to control such infection are being made , and the development of a vaccine is a World Health Organization priority . Among the proteins being tested as vaccine candidates in preclinical settings is the non-structural ... | Dengue is one of the most prevalent viral infections . It affects millions of people every year and can be life-threatening if left untreated . The development of a dengue vaccine is a public health priority . In the present study , we decided to use a dengue virus derived protein , named non-structural protein 1 ( NS1... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"immunizations",
"viral",
"vaccines",
"adaptive",
"immunity",
"immune",
"cells",
"immunity",
"virology",
"antigen-presenting",
"cells",
"t",
"cells",
"immunology",
"immunity",
"to",
"infections",
"biology",
"microbiology",
"immune",
"response",
"immunoglobulins"
] | 2013 | Targeting the Non-structural Protein 1 from Dengue Virus to a Dendritic Cell Population Confers Protective Immunity to Lethal Virus Challenge |
Alpha satellite domains that currently function as centromeres of human chromosomes are flanked by layers of older alpha satellite , thought to contain dead centromeres of primate progenitors , which lost their function and the ability to homogenize satellite repeats , upon appearance of a new centromere . Using cladis... | The primate centromere evolves by amplification of alpha satellite sequences in its inner core , which expands and moves the peripheral sequences sideways , forming layers of different age in the “pericentromeric” area . The expanding centromere model poses two main questions: ( 1 ) whether the succession of layers is ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"evolutionary",
"biology/human",
"evolution",
"molecular",
"biology/molecular",
"evolution",
"molecular",
"biology/centromeres",
"molecular",
"biology/chromosome",
"structure",
"genetics",
"and",
"genomics/chromosome",
"biology",
"evolutionary",
"biology/genomics",
"molecular",
"... | 2009 | The Evolutionary Origin of Man Can Be Traced in the Layers of Defunct Ancestral Alpha Satellites Flanking the Active Centromeres of Human Chromosomes |
Three different prenyltransferases attach isoprenyl anchors to C-terminal motifs in substrate proteins . These lipid anchors serve for membrane attachment or protein–protein interactions in many pathways . Although well-tolerated selective prenyltransferase inhibitors are clinically available , their mode of action rem... | Various cellular functions require reversible membrane localization of proteins . This is often facilitated by attaching lipids to the respective proteins , thus anchoring them to the membrane . For example , addition of prenyl lipid anchors ( prenylation ) is directed by a motif in the protein sequence that can be pre... | [
"Abstract",
"Introduction",
"Results/Discussion",
"Materials",
"and",
"Methods",
"Supporting",
"Information"
] | [
"oncology",
"viruses",
"biochemistry",
"cell",
"biology",
"plant",
"biology",
"virology",
"eukaryotes",
"computational",
"biology",
"evolutionary",
"biology"
] | 2007 | Towards Complete Sets of Farnesylated and Geranylgeranylated Proteins |
The DREAM ( Dp/Retinoblastoma ( Rb ) -like/E2F/MuvB ) transcriptional repressor complex acts as a gatekeeper of the mammalian cell cycle by establishing and maintaining cellular quiescence . How DREAM’s three functional components , the E2F-DP heterodimer , the Rb-like pocket protein , and the MuvB subcomplex , form an... | The 8-subunit DREAM transcriptional repressor complex contains 3 functional components that together control expression of cell cycle and developmental genes . How the E2F-DP transcription factor heterodimer , the pocket protein , and the highly conserved MuvB complex coalesce on chromatin and repress DREAM target gene... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"invertebrates",
"rna",
"interference",
"caenorhabditis",
"cell",
"cycle",
"and",
"cell",
"division",
"cell",
"processes",
"animals",
"dna",
"transcription",
"animal",
"models",
"developmental",
"biology",
"caenorhabditis",
"elegans",
"model",
"organisms",
"experimental",... | 2017 | Loss of the Caenorhabditis elegans pocket protein LIN-35 reveals MuvB's innate function as the repressor of DREAM target genes |
Repeated adaptation to a new environment often leads to convergent phenotypic changes whose underlying genetic mechanisms are rarely known . Here , we study adaptation of color vision in threespine stickleback during the repeated postglacial colonization of clearwater and blackwater lakes in the Haida Gwaii archipelago... | When organisms colonize a new environment in replicate , natural selection often leads to similar phenotypic adaptations . Such “convergent evolution” is known from both distant relatives , e . g . , sea cows and whales adapting to an aquatic life , and from multiple populations within a species , but the causing genet... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"ecology",
"and",
"environmental",
"sciences",
"vertebrates",
"light",
"animals",
"electromagnetic",
"radiation",
"genetic",
"mapping",
"osteichthyes",
"aquatic",
"environments",
"fresh",
"water",
"bodies",
"of",
"water",
"convergent",
"evolution",
"evolutionary",
"adapta... | 2017 | Convergent evolution of SWS2 opsin facilitates adaptive radiation of threespine stickleback into different light environments |
For the first time , differential attraction of pathogen vectors to vertebrate animals is investigated for novel repellents which when applied to preferred host animals turn them into non-hosts thereby providing a new paradigm for innovative vector control . For effectively controlling tsetse flies ( Glossina spp . ) ,... | We investigated the potential of non-host odors from un-preferred animals , i . e . not fed upon , related to cattle , the waterbuck ( Kobus ellipsiprymnus defassa ) which are common in tsetse habitats for their efficacy to protect cattle from tsetse flies that transmit nagana to cattle in Africa . The identified water... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Sampling",
"Ethics",
"statement",
"Results",
"Social-economic",
"impact",
"of",
"tsetse",
"repellent",
"collars",
"Discussion"
] | [
"invertebrates",
"livestock",
"medicine",
"and",
"health",
"sciences",
"parasitic",
"protozoans",
"animals",
"parasitology",
"glossina",
"protozoans",
"animal",
"behavior",
"tsetse",
"fly",
"infectious",
"disease",
"control",
"insect",
"vectors",
"zoology",
"veterinary",
... | 2017 | Protecting cows in small holder farms in East Africa from tsetse flies by mimicking the odor profile of a non-host bovid |
Methadone maintenance treatment ( MMT ) is commonly used for controlling opioid dependence , preventing withdrawal symptoms , and improving the quality of life of heroin-dependent patients . A steady-state plasma concentration of methadone enantiomers , a measure of methadone metabolism , is an index of treatment respo... | Methadone maintenance treatment ( MMT ) , among the most effective therapies for heroin-dependent patients , reduces craving and withdrawal symptoms , increases treatment compliance , and improves the quality of life of patients . The plasma concentration of methadone is a primary index for quantifying and determining ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biotechnology",
"medicine",
"and",
"health",
"sciences",
"engineering",
"and",
"technology",
"replication",
"studies",
"population",
"genetics",
"quantitative",
"traits",
"research",
"design",
"industrial",
"engineering",
"quality",
"control",
"pharmacology",
"population",... | 2016 | Genome-Wide Pharmacogenomic Study on Methadone Maintenance Treatment Identifies SNP rs17180299 and Multiple Haplotypes on CYP2B6, SPON1, and GSG1L Associated with Plasma Concentrations of Methadone R- and S-enantiomers in Heroin-Dependent Patients |
The ecological context in which mosquitoes and malaria parasites interact has received little attention , compared to the genetic and molecular aspects of malaria transmission . Plant nectar and fruits are important for the nutritional ecology of malaria vectors , but how the natural diversity of plant-derived sugar so... | The Anopheles coluzzii mosquito is an effective vector of human Plasmodium falciparum malaria . Besides feeding on blood , females readily feed on natural sources of plant sugars; but how plant diversity affects their ability to transmit malaria parasites is currently unknown . Here we show that mosquito feeding on per... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"invertebrates",
"medicine",
"and",
"health",
"sciences",
"parasite",
"groups",
"plasmodium",
"gametocytes",
"tropical",
"diseases",
"parasitic",
"diseases",
"parasitic",
"protozoans",
"animals",
"parasitology",
"germ",
"cells",
"apicomplexa",
"protozoans",
"crops",
"inse... | 2016 | Plant-Mediated Effects on Mosquito Capacity to Transmit Human Malaria |
Pterosaurs were the first vertebrates to evolve powered flight and the largest animals to ever take wing . The pterosaurs persisted for over 150 million years before disappearing at the end of the Cretaceous , but the patterns of and processes driving their extinction remain unclear . Only a single family , Azhdarchida... | Pterosaurs were winged cousins of the dinosaurs and lived from around 200 million years ago to 66 million years ago , when the last pterosaurs disappeared during the Cretaceous-Paleogene extinction that wiped out the dinosaurs . The pterosaurs are thought to have declined in diversity before their final extinction , su... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"geologic",
"time",
"medicine",
"and",
"health",
"sciences",
"ecology",
"and",
"environmental",
"sciences",
"vertebrate",
"paleontology",
"humerus",
"vertebrates",
"biodiversity",
"animals",
"animal",
"anatomy",
"geology",
"paleontology",
"skeleton",
"amniotes",
"zoology"... | 2018 | Late Maastrichtian pterosaurs from North Africa and mass extinction of Pterosauria at the Cretaceous-Paleogene boundary |
There has been much recent excitement about the use of genetics to elucidate ancestral history and demography . Whole genome data from humans and other species are revealing complex stories of divergence and admixture that were left undiscovered by previous smaller data sets . A central challenge is to estimate the tim... | In this paper , we study the length distribution of tracts of identity by state ( IBS ) , which are the gaps between pairwise differences in an alignment of two DNA sequences . These tract lengths contain information about the amount of genetic diversity that existed at various times in the history of a species and can... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"algorithms",
"computer",
"science",
"mathematics",
"theoretical",
"biology",
"algebra",
"calculus",
"statistics",
"genetics",
"applied",
"mathematics",
"population",
"biology",
"biology",
"genomics",
"evolutionary",
"biology",
"computerized",
"simulations",
"computational",
... | 2013 | Inferring Demographic History from a Spectrum of Shared Haplotype Lengths |
Plasmodium vivax can potentially lead to life-threatening episodes but the mechanisms underlying severe disease remain poorly defined . Cytoadhesion of infected erythrocytes may contribute to P . vivax sequestration and organ injury although its physiological impact is still unknown . Here , we aimed to describe clinic... | Despite being considered a relatively benign disease , Plasmodium vivax infection has been recently associated with fatal outcomes . The mechanisms contributing to severe disease in P . vivax malaria remain largely unknown , although scarce evidences suggests that similarly to P . falciparum , P . vivax may also adhere... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"infectious",
"diseases",
"plasmodium",
"vivax",
"malaria",
"parasitic",
"diseases"
] | 2013 | Rosetting in Plasmodium vivax: A Cytoadhesion Phenotype Associated with Anaemia |
Rhinovirus infections are the major cause of asthma exacerbations . We hypothesised that IL-15 , a cytokine implicated in innate and acquired antiviral immunity , may be deficient in asthma and important in the pathogenesis of asthma exacerbations . We investigated regulation of IL-15 induction by rhinovirus in human m... | We previously reported deficiency in interferon production in asthma , which correlated with disease severity and viral load during experimental rhinovirus infection . Here we show that macrophages produce IL-15 upon rhinovirus infection and that IFN-β plays an important role in IL-15 production . In asthmatic subjects... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"medicine",
"infectious",
"diseases",
"clinical",
"immunology",
"immunity",
"innate",
"immunity",
"rhinovirus",
"infection",
"immunology",
"viral",
"diseases",
"respiratory",
"medicine",
"pulmonology",
"asthma"
] | 2011 | The Role of IL-15 Deficiency in the Pathogenesis of Virus-Induced Asthma Exacerbations |
Recent mathematical models have been developed to study the dynamics of chronic myelogenous leukemia ( CML ) under imatinib treatment . None of these models incorporates the anti-leukemia immune response . Recent experimental data show that imatinib treatment may promote the development of anti-leukemia immune response... | Recent mathematical models have been developed to study the dynamics of chronic myelogenous leukemia ( CML ) under imatinib treatment . None of these models incorporates the anti-leukemia immune response . Recent experimental data show that imatinib treatment may promote the development of anti-leukemia immune response... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"mathematics",
"oncology/hematological",
"malignancies"
] | 2008 | Dynamics and Potential Impact of the Immune Response to Chronic Myelogenous Leukemia |
The obligate human pathogen Neisseria gonorrhoeae is the sole aetiologic agent of the sexually transmitted infection , gonorrhea . Required for gonococcal infection , Type IV pili ( Tfp ) mediate many functions including adherence , twitching motility , defense against neutrophil killing , and natural transformation . ... | Neisseria gonorrhoeae , the bacterium responsible for the disease gonorrhea , is capable of undergoing natural DNA transformation , a critical mechanism by which bacteria can take up DNA from the environment . Uptake of foreign DNA can lead to adaptation to a changing environment and allow the spread of antibiotic resi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"medicine",
"and",
"health",
"sciences",
"immune",
"physiology",
"enzyme-linked",
"immunoassays",
"pathology",
"and",
"laboratory",
"medicine",
"chemical",
"compounds",
"pathogens",
"immunology",
"antigenic",
"variation",
"microbiology",
"neisseria",
"gonorrhoeae",
"cloning... | 2016 | The Pilin N-terminal Domain Maintains Neisseria gonorrhoeae Transformation Competence during Pilus Phase Variation |
Blocking the PD-1/PD-L1 pathway has emerged as a potential therapy to restore impaired immune responses in human immunodeficiency virus ( HIV ) -infected individuals . Most reports have studied the impact of the PD-L1 blockade on effector cells and neglected possible effects on regulatory T cells ( Treg cells ) , which... | HIV infection causes a progressive impairment of effector immune responses , contributing to virus persistence . The restoration of these responses is essential to achieve a drug-free control over HIV . One strategy that could restore effector immune responses is the relief of the inhibitory signal displayed by the PD-... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | PD-L1 Blockade Differentially Impacts Regulatory T Cells from HIV-Infected Individuals Depending on Plasma Viremia |
The globally important Zika , dengue and chikungunya viruses are primarily transmitted by the invasive mosquitoes , Aedes aegypti and Aedes albopictus . In Australia , there is an increasing risk that these species may invade highly urbanized regions and trigger outbreaks . We describe the development of a Rapid Survei... | Aedes ( Stegomyia ) vectors of dengue , Zika and chikungunya viruses utilize artificial and natural containers as larval habitats . Adults do not usually disperse far ( < 500 m ) from these larval habitats in urban and peri-urban environments . Highly heterogeneous distributions raise significant logistic challenges to... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"reverse",
"transcriptase-polymerase",
"chain",
"reaction",
"invertebrates",
"species",
"colonization",
"medicine",
"and",
"health",
"sciences",
"ecology",
"and",
"environmental",
"sciences",
"pathology",
"and",
"laboratory",
"medicine",
"togaviruses",
"invasive",
"species"... | 2017 | Rapid Surveillance for Vector Presence (RSVP): Development of a novel system for detecting Aedes aegypti and Aedes albopictus |
Several studies have demonstrated the presence of pathogen-specific Foxp3+ CD4 regulatory T cells ( Treg ) in infected animals , but little is known about where and how these cells affect the effector T cell responses and whether they are more suppressive than bulk Treg populations . We recently showed the presence of ... | By repressing immune responses against pathogens , regulatory CD4 T cells are double edged swords . On one hand , they ameliorate immunopathological disease , diminishing morbidity but they also potentially contribute to pathogen persistence . Tregs have long been thought to be primarily directed at self-antigens , but... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"blood",
"cells",
"medicine",
"and",
"health",
"sciences",
"immunity",
"to",
"infections",
"immunology",
"lymphocyte",
"activation",
"immunoregulation",
"immunomodulation",
"infectious",
"diseases",
"white",
"blood",
"cells",
"animal",
"cells",
"t",
"cells",
"immune",
... | 2014 | Virus-Specific Regulatory T Cells Ameliorate Encephalitis by Repressing Effector T Cell Functions from Priming to Effector Stages |
Critical to the pathogenesis of intestinal amebiasis , Entamoeba histolytica ( Eh ) induces mucus hypersecretion and degrades the colonic mucus layer at the site of invasion . The parasite component ( s ) responsible for hypersecretion are poorly defined , as are regulators of mucin secretion within the host . In this ... | An interesting facet to the protozoan parasite Entamoeba histolytica is the ability to cause disease in a very limited subset of individuals , subject to first overcoming the intestinal mucus barrier within the gastrointestinal tract . Mucins , which are the primary constituent of the mucus layer are secreted basally t... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"phosphorylation",
"flow",
"cytometry",
"medicine",
"and",
"health",
"sciences",
"body",
"fluids",
"enzymes",
"cell",
"processes",
"enzymology",
"physiological",
"processes",
"integrins",
"cellular",
"structures",
"and",
"organelles",
"research",
"and",
"analysis",
"met... | 2016 | Entamoeba histolytica Cysteine Proteinase 5 Evokes Mucin Exocytosis from Colonic Goblet Cells via αvβ3 Integrin |
Retroviruses engage the ESCRT pathway through late assembly ( L ) domains in Gag to promote virus release . HIV-1 uses a PTAP motif as its primary L domain , which interacts with the ESCRT-I component Tsg101 . In contrast , certain other retroviruses primarily use PPxY-type L domains , which constitute ligands for NEDD... | To promote its escape from cells , HIV-1 hijacks cellular budding machinery through so-called L domains in its structural Gag protein . However , HIV-1 lacks a type of L domain that recruits NEDD4 ubiquitin ligases , a family of cellular enzymes that attach one or more copies of a small protein called ubiquitin to othe... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"virology/virion",
"structure,",
"assembly,",
"and",
"egress",
"virology/immunodeficiency",
"viruses"
] | 2010 | Rescue of HIV-1 Release by Targeting Widely Divergent NEDD4-Type Ubiquitin Ligases and Isolated Catalytic HECT Domains to Gag |
In many rural areas at risk for enteric fever , there are few data on Salmonella enterica serotypes Typhi ( S . Typhi ) and Paratyphi ( S . Paratyphi ) incidence , due to limited laboratory capacity for microbiologic culture . Here , we describe an approach that permits recovery of the causative agents of enteric fever... | Every year , 20 million people worldwide suffer from typhoid , a bacterial infection spread by contaminated food and water , and over 200 , 000 die from the infection . However , few data are available on the prevalence and antimicrobial resistance profiles of the causative agents of typhoid , especially in settings wi... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"bacterial",
"diseases",
"infectious",
"diseases",
"clinical",
"laboratory",
"sciences",
"diagnostic",
"medicine",
"global",
"health",
"salmonella"
] | 2013 | Evaluation of an Electricity-free, Culture-based Approach for Detecting Typhoidal Salmonella Bacteremia during Enteric Fever in a High Burden, Resource-limited Setting |
Coordination between cellular metabolism and DNA replication determines when cells initiate division . It has been assumed that metabolism only plays a permissive role in cell division . While blocking metabolism arrests cell division , it is not known whether an up-regulation of metabolic reactions accelerates cell cy... | How cells determine when to divide is critical for understanding biological processes where cell proliferation is manifest . Because cells need to accumulate precursors prior to duplication , cellular metabolism is expected to impact cell division . Mitochondrial processes are central to the control of overall cell met... | [
"Abstract",
"Introduction",
"Results/Discussion",
"Materials",
"and",
"Methods"
] | [
"cell",
"biology/microbial",
"physiology",
"and",
"metabolism",
"molecular",
"biology/dna",
"replication",
"cell",
"biology/cell",
"growth",
"and",
"division",
"molecular",
"biology/histone",
"modification"
] | 2008 | An Increase in Mitochondrial DNA Promotes Nuclear DNA Replication in Yeast |
The nematodes Wuchereria bancrofti and Brugia spp . infect over 120 million people worldwide , causing lymphedema , elephantiasis and hydrocele , collectively known as lymphatic filariasis . Most infected individuals appear to be asymptomatic , but many exhibit sub-clinical manifestations including the lymphangiectasia... | Lymphatic filariasis is caused by parasitic worms with approximately 120 million people infected worldwide and over 1 billion people at risk . The adult worms reside in host lymphatic vessels ( LV ) but most infected individuals do not present with overt clinical symptoms . Individuals exhibiting lymphedema , a common ... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"blood",
"cells",
"medicine",
"and",
"health",
"sciences",
"immune",
"cells",
"pathology",
"and",
"laboratory",
"medicine",
"immunology",
"microbiology",
"parasitology",
"emerging",
"infectious",
"diseases",
"infectious",
"diseases",
"white",
"blood",
"cells",
"animal",... | 2014 | Filarial Excretory-Secretory Products Induce Human Monocytes to Produce Lymphangiogenic Mediators |
Predictive markers linking drug efficacy to clinical outcome are a key component in the drug discovery and development process . In HIV infection , two different measures , viral load decay and phenotypic assays , are used to assess drug efficacy in vivo and in vitro . For the newly introduced class of integrase inhibi... | To guide drug discovery and development , measures of drug efficacy that are linked to clinical outcome are of key importance . In HIV treatment , decay of plasma viral load is typically used as an in vivo measure of drug efficacy , whereas phenotypic assays are used to assess drug efficacy in vitro . The recent develo... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"pharmacology/drug",
"resistance",
"virology/immunodeficiency",
"viruses",
"virology/new",
"therapies,",
"including",
"antivirals",
"and",
"immunotherapy",
"pharmacology/drug",
"development",
"virology/antivirals,",
"including",
"modes",
"of",
"action",
"and",
"resistance",
"co... | 2010 | Drug-Class Specific Impact of Antivirals on the Reproductive Capacity of HIV |
Giardia intestinalis is a common cause of diarrheal disease and it consists of eight genetically distinct genotypes or assemblages ( A-H ) . Only assemblages A and B infect humans and are suggested to represent two different Giardia species . Correlations exist between assemblage type and host-specificity and to some e... | Giardia is a single cell intestinal parasite and a common cause of diarrhea in humans and animals . Giardia is an unusual eukaryote by possessing two nuclei , a highly reduced genome and simple transcriptional apparatus . We have characterized the transcriptome of Giardia at single nucleotide resolution , which allowed... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results/Discussion"
] | [
"parastic",
"protozoans",
"giardia",
"lamblia",
"genome",
"analysis",
"tools",
"genomics",
"protozoology",
"biology",
"computational",
"biology",
"microbiology",
"genetics",
"and",
"genomics",
"transcriptomes"
] | 2013 | Transcriptome Profiling of Giardia intestinalis Using Strand-specific RNA-Seq |
The availability of genomes of many closely related bacteria with diverse metabolic capabilities offers the possibility of tracing metabolic evolution on a phylogeny relating the genomes to understand the evolutionary processes and constraints that affect the evolution of metabolic networks . Using simple ( independent... | Metabolic networks correspond to one of the most complex cellular processes . Most organisms have a common set of reactions as a part of their metabolic networks that relate to essential processes such as generation of energy and the synthesis of important biological molecules , which are required for their survival . ... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"computational",
"biology/evolutionary",
"modeling",
"computational",
"biology/metabolic",
"networks",
"computational",
"biology/systems",
"biology"
] | 2010 | A Bayesian Approach to the Evolution of Metabolic Networks on a Phylogeny |
In April , 2004 , chikungunya virus ( CHIKV ) re-emerged in Kenya and eventually spread to the islands in the Indian Ocean basin , South-East Asia , and the Americas . The virus , which is often associated with high levels of viremia in humans , is mostly transmitted by the urban vector , Aedes aegypti . The expansion ... | A chikungunya epidemic recently occurred in Mandera , Northern Kenya , with over 1 , 700 cases reported . The disease epidemics are linked to the urban vector , Aedes aegypti . This mosquito species is rapidly expanding its range and it is currently abundant in and around the major urban cities of Kenya . In this study... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"invertebrates",
"medicine",
"and",
"health",
"sciences",
"body",
"fluids",
"legs",
"pathology",
"and",
"laboratory",
"medicine",
"togaviruses",
"chikungunya",
"infection",
"pathogens",
"tropical",
"diseases",
"microbiology",
"limbs",
"(anatomy)",
"geographical",
"locatio... | 2017 | Vector competence of populations of Aedes aegypti from three distinct cities in Kenya for chikungunya virus |
Synchronous spiking during cerebellar tasks has been observed across Purkinje cells: however , little is known about the intrinsic cellular mechanisms responsible for its initiation , cessation and stability . The Phase Response Curve ( PRC ) , a simple input-output characterization of single cells , can provide insigh... | The phase response curve ( PRC ) quantifies the effect of an infinitesimal perturbation on the phase of an oscillator , be it mechanical , electronic or biological . In the particular case of neurons , PRCs can be employed to infer several network properties that are influenced by intrinsic membrane mechanisms . It has... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | On the Firing Rate Dependency of the Phase Response Curve of Rat Purkinje Neurons In Vitro |
HIV-1 release is mediated through two motifs in the p6 region of Gag , PTAP and LYPXnL , which recruit cellular proteins Tsg101 and Alix , respectively . The Nucleocapsid region of Gag ( NC ) , which binds the Bro1 domain of Alix , also plays an important role in HIV-1 release , but the underlying mechanism remains unc... | Human immunodeficiency virus type 1 ( HIV-1 ) assembles its structural protein Gag into a viral shell at the plasma membrane . Gag is divided into several regions , each with its own distinct function ( s ) . Within the p6 region of Gag , there are two short peptide sequences , called Late ( L ) domains , that serve to... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"virology/virion",
"structure,",
"assembly,",
"and",
"egress",
"virology/immunodeficiency",
"viruses"
] | 2009 | The Nucleocapsid Region of HIV-1 Gag Cooperates with the PTAP and LYPXnL Late Domains to Recruit the Cellular Machinery Necessary for Viral Budding |
Genomic instability associated with DNA replication stress is linked to cancer and genetic pathologies in humans . If not properly regulated , replication stress , such as fork stalling and collapse , can be induced at natural replication impediments present throughout the genome . The fork protection complex ( FPC ) i... | In every round of the cell cycle , cells must accurately replicate their full genetic information . This process is highly regulated , as defects during DNA replication cause genomic instability , leading to various genetic disorders including cancers . To thwart these problems , cells carry an array of complex mechani... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"chromosome",
"structure",
"and",
"function",
"molecular",
"probe",
"techniques",
"dna",
"damage",
"telomeres",
"fungi",
"model",
"organisms",
"dna",
"replication",
"protein",
"structure",
"dna",
"epigenetics",
"molecular",
"biology",
"techniques",
"gel",
"electrophores... | 2016 | Swi1Timeless Prevents Repeat Instability at Fission Yeast Telomeres |
The midgut microbial community in insect vectors of disease is crucial for an effective immune response against infection with various human and animal pathogens . Depending on the aspects of their development , insects can acquire microbes present in soil , water , and plants . Sand flies are major vectors of leishman... | Symbiotic microorganisms influence many aspects of the physiology of their hosts . In insects , symbiotic bacteria are able among other things to modulate the immune response and the development of the insect from larval stages to adult . Many bacteria first gain access to insect tissues , such as the gut , during larv... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | Bacterial Infection and Immune Responses in Lutzomyia longipalpis Sand Fly Larvae Midgut |
The West African Ebola epidemic has demonstrated that the existing range of medical and epidemiological responses to emerging disease outbreaks is insufficient , especially in post-conflict contexts with exceedingly poor healthcare infrastructures . In this context , community-based responses have proven vital for cont... | In this study the authors analyzed data from the 2014 Ebola outbreak in Monrovia and Montserrado County , Liberia . The data were collected for the purposes of program design and evaluation by the World Health Organization ( WHO ) and the Government of Liberia ( GOL ) , in order to identify: ( 1 ) local knowledge about... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | Community-Centered Responses to Ebola in Urban Liberia: The View from Below |
High affinity antigen-specific T cells play a critical role during protective immune responses . Epitope enhancement can elicit more potent T cell responses and can subsequently lead to a stronger memory pool; however , the molecular basis of such enhancement is unclear . We used the consensus peptide-binding motif for... | Enhancing the immune responses to pathogens is a chief goal of vaccine development . Here , we describe the development of an engineered CD8+ T cell epitope that elicits an immune response to the native epitope that is more potent than the one that occurs during the natural infection . We showed that this “improved” ( ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"neurological",
"disorders/infectious",
"diseases",
"of",
"the",
"nervous",
"system",
"immunology/immunity",
"to",
"infections",
"virology/animal",
"models",
"of",
"infection",
"virology/immune",
"evasion"
] | 2008 | Prevention of Cytotoxic T Cell Escape Using a Heteroclitic Subdominant Viral T Cell Determinant |
Few studies have focused on the cognitive morbidity of neurocysticercosis ( NCC ) , one of the most common parasitic infections of the central nervous system . We longitudinally assessed the cognitive status and quality of life ( QoL ) of patients with incident symptomatic NCC cases and matched controls . The setting o... | Neurocysticercosis ( NCC ) is one of the most common parasitic infections of the central nervous system . Cognitive changes have been frequently reported with this disease but have not been well studied . Our study team recruited a group of new onset NCC cases and a matched set of healthy neighborhood controls and new ... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"infectious",
"diseases",
"global",
"health",
"neurology",
"neurological",
"disorders"
] | 2012 | Cognitive Changes and Quality of Life in Neurocysticercosis: A Longitudinal Study |
Nogo-A is a membrane protein of the central nervous system ( CNS ) restricting neurite growth and synaptic plasticity via two extracellular domains: Nogo-66 and Nogo-A-Δ20 . Receptors transducing Nogo-A-Δ20 signaling remained elusive so far . Here we identify the G protein-coupled receptor ( GPCR ) sphingosine 1-phosph... | Recent studies have demonstrated an important role of Nogo-A signaling in the repression of structural and synaptic plasticity in mature neuronal networks of the central nervous system . These insights extended our understanding of Nogo-A's inhibitory function far beyond its well-studied role as axonal-growth inhibitor... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biochemistry",
"lipoprotein",
"receptors",
"developmental",
"neuroscience",
"synaptic",
"plasticity",
"neurochemistry",
"neurobiology",
"of",
"disease",
"and",
"regeneration",
"proteins",
"lipoproteins",
"biology",
"neuroscience"
] | 2014 | The Sphingolipid Receptor S1PR2 Is a Receptor for Nogo-A Repressing Synaptic Plasticity |
Follicular T helper cells ( Tfh ) , a subset of CD4 T lymphocytes , provide crucial help to B cells in the production of antigen-specific antibodies . Although several studies have analyzed the dynamics of Tfh cells in peripheral blood and lymph nodes ( LNs ) during Aids , none has yet addressed the impact of SIV infec... | Among CD4 T lymphocytes , follicular T helper cells ( Tfh ) are essential for B cell responses . Understanding the impact of viral infections on Tfh function , in particular in deep tissues such as the spleen , which is the main organ for B cell response , may be important for vaccine development . We used a non-human ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | Early Loss of Splenic Tfh Cells in SIV-Infected Rhesus Macaques |
Human brucellosis ( HB ) is a bacterial zoonosis that is more frequent in low income and middle-income countries; it is sometimes associated with outbreaks . The aim of this study was to describe the largest outbreak of HB in Brazil . A retrospective cohort study of patients suspected of having contracted HB in the sta... | Human brucellosis ( HB ) is a bacterial zoonosis more frequent in low income and middle-income countries . The number of cases has increased in Southern Brazil since 2014 . Considering the risk of dissemination of the disease , the authors evaluated the whole spectrum of the disease in the State of Paraná , where cases... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"and",
"health",
"sciences",
"milk",
"body",
"fluids",
"pathology",
"and",
"laboratory",
"medicine",
"pathogens",
"tropical",
"diseases",
"microbiology",
"geographical",
"locations",
"diet",
"brucellosis",
"organisms",
"bacterial",
"diseases",
"nutrition",
"... | 2018 | Outbreak of human brucellosis in Southern Brazil and historical review of data from 2009 to 2018 |
The mechanisms leading to latency and reactivation of human tuberculosis are still unclear , mainly due to the lack of standardized animal models for latent mycobacterial infection . In this longitudinal study of the progression of a mycobacterial disease in adult zebrafish , we show that an experimental intraperitonea... | One third of the world's population has been estimated to be infected with Mycobacterium tuberculosis , which under the appropriate set of circumstances causes lethal lung disease . According to current understanding , mycobacteria can persist in their host without causing symptoms – a state referred to as latency or s... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"animal",
"models",
"medicine",
"bacterial",
"diseases",
"zebrafish",
"infectious",
"diseases",
"model",
"organisms",
"immunology",
"biology",
"microbiology",
"host-pathogen",
"interaction",
"infectious",
"disease",
"modeling",
"bacterial",
"pathogens",
"immune",
"response"... | 2012 | Mycobacterium marinum Causes a Latent Infection that Can Be Reactivated by Gamma Irradiation in Adult Zebrafish |
Plasmacytoid dendritic cells ( pDCs ) express the I-type lectin receptor Siglec-H and produce interferon α ( IFNα ) , a critical anti-viral cytokine during the acute phase of murine cytomegalovirus ( MCMV ) infection . The ligands and biological functions of Siglec-H still remain incompletely defined in vivo . Thus , w... | Plasmacytoid dendritic cells ( pDCs ) represent a minor but functionally important subset of dendritic cells . Siglec-H , a surface receptor expressed on these cells , was shown to modulate IFNα production , which in turn could influence anti-viral functions in vivo . A potential role for Siglec-H as a pathogen uptake ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"Methods"
] | [] | 2013 | Absence of Siglec-H in MCMV Infection Elevates Interferon Alpha Production but Does Not Enhance Viral Clearance |
Hematopoietic stem cells are capable of self-renewal or differentiation along three main lineages: myeloid , erythroid , and lymphoid . One of the earliest lineage decisions for blood progenitor cells is whether to adopt the lymphoid or myeloid fate . Previous work had shown that myocyte enhancer factor 2C ( MEF2C ) is... | B cells comprise important defense systems against infections in animals . Generating B cells requires the interplay of signals received by a blood stem cell and the ability of this cell to turn on or off gene expression , the latter of which is regulated largely by transcription factors . Despite the characterization ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"blood",
"cells",
"medicine",
"and",
"health",
"sciences",
"luciferase",
"immune",
"cells",
"gene",
"regulation",
"enzymes",
"regulatory",
"proteins",
"immunology",
"biological",
"cultures",
"dna-binding",
"proteins",
"enzymology",
"293t",
"cells",
"cell",
"differentiat... | 2016 | MEF2C and EBF1 Co-regulate B Cell-Specific Transcription |
The HIV-1 envelope ( Env ) spike , which consists of a compact , heterodimeric trimer of the glycoproteins gp120 and gp41 , is the target of neutralizing antibodies . However , the high mutation rate of HIV-1 and plasticity of Env facilitates viral evasion from neutralizing antibodies through various mechanisms . Mutat... | The Env glycoproteins , gp120 and gp41 , are the viral targets of HIV neutralizing antibodies . Accordingly , vaccine studies have focused on eliciting broadly neutralizing antibodies against epitopes in these proteins . Sequence diversity and the conformational flexibility of Env have made vaccine design efforts diffi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"physics",
"theoretical",
"biology",
"biophysic",
"al",
"simulations",
"immunology",
"biology",
"computational",
"biology",
"evolutionary",
"biology",
"biophysics",
"simulations",
"biophysics"
] | 2013 | A Mechanistic Understanding of Allosteric Immune Escape Pathways in the HIV-1 Envelope Glycoprotein |
The presence of spliceosomal introns in eukaryotes raises a range of questions about genomic evolution . Along with the fundamental mysteries of introns' initial proliferation and persistence , the evolutionary forces acting on intron sequences remain largely mysterious . Intron number varies across species from a few ... | The spliceosomal introns that interrupt eukaryotic genes show great number and sequence variation across species , from the rare , highly uniform yeast introns to the ubiquitous and highly variable vertebrate intron sequences . The causes of these differences remain mysterious . We studied sequences of intron branch po... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"genetics",
"and",
"genomics/genomics",
"genetics",
"and",
"genomics/comparative",
"genomics",
"evolutionary",
"biology/genomics",
"genetics",
"and",
"genomics",
"genetics",
"and",
"genomics/bioinformatics"
] | 2008 | Evolutionary Convergence on Highly-Conserved 3′ Intron Structures in Intron-Poor Eukaryotes and Insights into the Ancestral Eukaryotic Genome |
To gain insight into which parameters of neural activity are important in shaping the perception of odors , we combined a behavioral measure of odor perception with optical imaging of odor representations at the level of receptor neuron input to the rat olfactory bulb . Instead of the typical test of an animal's abilit... | Olfactory stimuli elicit temporally complex patterns of activity across groups of receptor neurons as well as across central neurons . It remains unclear which parameters among these complex activity patterns are important in shaping odor perception . To address this issue , we imaged from the olfactory bulb of awake r... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"neuroscience"
] | 2008 | Rapid Encoding and Perception of Novel Odors in the Rat |
The link between mechanics and biology in the generation and the adaptation of bone has been well studied in context of skeletal development and fracture healing . Yet , the prediction of tissue genesis within - and the spatiotemporal healing of - postnatal defects , necessitates a quantitative evaluation of mechano-bi... | Arising as a consequence of trauma , tumor resection , removal of necrotic or infected tissue , and congenital abnormalities , critical-sized defects are too large to heal spontaneously and therefore require surgical intervention . New surgical approaches harness the regenerative power of the periosteum , a tissue memb... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"and",
"health",
"sciences",
"materials",
"science",
"engineering",
"and",
"technology",
"biology",
"and",
"life",
"sciences",
"physical",
"sciences"
] | 2014 | Mechanistic, Mathematical Model to Predict the Dynamics of Tissue Genesis in Bone Defects via Mechanical Feedback and Mediation of Biochemical Factors |
While multiple studies have reported the accelerated evolution of brain gene expression in the human lineage , the mechanisms underlying such changes are unknown . Here , we address this issue from a developmental perspective , by analyzing mRNA and microRNA ( miRNA ) expression in two brain regions within macaques , c... | Species evolution is often depicted as a slow and continuous process punctuated by rapid changes . One example of the latter is the evolution of human cognition–emergence of an exceedingly complex phenotype within a few million years . What genetic mechanisms might have driven this process ? Nearly 40 years ago , it wa... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"genome",
"expression",
"analysis",
"organismal",
"evolution",
"developmental",
"neuroscience",
"genomics",
"genetics",
"human",
"evolution",
"biology",
"evolutionary",
"biology",
"neuroscience",
"evolutionary",
"genetics",
"genetics",
"and",
"genomics",
"evolutionary",
"de... | 2011 | MicroRNA-Driven Developmental Remodeling in the Brain Distinguishes Humans from Other Primates |
In invertebrates , small interfering RNAs are at the vanguard of cell-autonomous antiviral immunity . In contrast , antiviral mechanisms initiated by interferon ( IFN ) signaling predominate in mammals . Whilst mammalian IFN-induced miRNA are known to inhibit specific viruses , it is not known whether host-directed mic... | How infected cells respond to a virus during the first minutes to hours after infection can determine whether a disease develops and influences the host’s long-term survival . In mammals , unlike plants and flies that use small RNAs to fight viral infections , virus-induced interferon responses are a critical early eve... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
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"interfering",
"rnas",
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"gene",
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"metabolic",
"pathways",
"viral",
"replication",
"sterols",
"cholesterol",
"biochemistry",
"rna",
"nucleic",
"acids",
"virology",
"genetics",
"... | 2016 | An Interferon Regulated MicroRNA Provides Broad Cell-Intrinsic Antiviral Immunity through Multihit Host-Directed Targeting of the Sterol Pathway |
Streptococcus pneumoniae ( pneumococcus ) is a leading cause of death and disease in children and elderly . Genetic variability among isolates from this species is high . These differences , often the product of gene loss or gene acquisition via horizontal gene transfer , can endow strains with new molecular pathways ,... | Streptococcus pneumoniae ( pneumococcus ) , an important human pathogen , exhibits a dual lifestyle featuring asymptomatic colonization of the host on the one hand as well as infliction of severe local and systemic disease on the other . In pneumococcal strains , differences in gene possession often lead to varied phen... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"chinchillas",
"medicine",
"and",
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"pneumococcus",
"ears",
"gene",
"regulation",
"pathogens",
"rna",
"extraction",
"microbiology",
"vertebrates",
"animals",
"mammals",
"middle",
"ear",
"regulator",
"gene... | 2017 | Promiscuous signaling by a regulatory system unique to the pandemic PMEN1 pneumococcal lineage |
Using geo-referenced case data , we present spatial and spatio-temporal cluster analyses of the early spread of the 2013–2015 chikungunya virus ( CHIKV ) in Dominica , an island in the Caribbean . Spatial coordinates of the locations of the first 417 reported cases observed between December 15th , 2013 and March 11th ,... | Chikungunya is a disease transmitted by mosquitoes . Currently , there is an epidemic of chikungunya in several islands and countries in the Americas . Despite efforts at understanding and predicting spread , there have been no studies assessing the spatio-temporal spread of chikungunya in any of the Caribbean islands ... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | Spatial and Temporal Clustering of Chikungunya Virus Transmission in Dominica |
Memory is attributed to strengthened synaptic connections among particular brain neurons , yet synaptic membrane components are transient , whereas memories can endure . This suggests synaptic information is encoded and ‘hard-wired’ elsewhere , e . g . at molecular levels within the post-synaptic neuron . In long-term ... | Memory is understood as strengthened synaptic connections among neurons . Paradoxically components of synaptic membranes are relatively short-lived and frequently re-cycled while memories can last a lifetime . This suggests synaptic information is encoded at a deeper , finer-grained scale of molecular information withi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"physics",
"signal",
"transduction",
"cell",
"motility",
"theoretical",
"biology",
"molecular",
"biology",
"signaling",
"pathways",
"biology",
"computational",
"biology",
"molecular",
"cell",
"biology",
"biophysics",
"neuroscience"
] | 2012 | Cytoskeletal Signaling: Is Memory Encoded in Microtubule Lattices by CaMKII Phosphorylation? |
Human schistosomiasis , a debilitating and chronic disease , is among a set of 17 neglected tropical infectious diseases of poverty that is currently posing a threat to the wellbeing of 2 billion people in the world . The SHAWN/WASH and MAM programmes in the study area require epidemiological data to enhance their effe... | In 1851 , human schistosomiasis was discovered in Egypt by a German surgeon named Theodor Bilharz . Therefore , it is alternatively called ‘bilharziasis’ . Being a disease that is closely associated with poverty in the tropics , chiefly the sub-Saharan Africa , Urinary Schistosomiasis is transmitted to humans who sourc... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results",
"Discussion"
] | [
"schistosoma",
"invertebrates",
"medicine",
"and",
"health",
"sciences",
"body",
"fluids",
"education",
"helminths",
"sociology",
"tropical",
"diseases",
"social",
"sciences",
"parasitic",
"diseases",
"animals",
"health",
"care",
"urine",
"gastropods",
"neglected",
"tro... | 2018 | The current epidemiological status of urogenital schistosomiasis among primary school pupils in Katsina State, Nigeria: An imperative for a scale up of water and sanitation initiative and mass administration of medicines with Praziquantel |
Epilepsy is one of the most common neurological disorders affecting about 1% of the world population . For patients with focal seizures that cannot be treated with antiepileptic drugs , the common treatment is a surgical procedure for removal of the seizure onset zone ( SOZ ) . In this work we introduce an algorithm fo... | Epilepsy is a common neurological disorder characterized by abnormal electrical disturbances in the brain that result in transient occurrence of signs and/or symptoms , also known as seizures . In focal epilepsy , this electrical activity originates from a limited area in the brain , commonly referred to as the seizure... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"machine",
"learning",
"algorithms",
"medicine",
"and",
"health",
"sciences",
"applied",
"mathematics",
"neuroscience",
"surgical",
"and",
"invasive",
"medical",
"procedures",
"health",
"care",
"simulation",
"and",
"modeling",
"algorithms",
"mathematics",
"artificial",
... | 2018 | SozRank: A new approach for localizing the epileptic seizure onset zone |
The brain exhibits complex spatio-temporal patterns of activity . This phenomenon is governed by an interplay between the internal neural dynamics of cortical areas and their connectivity . Uncovering this complex relationship has raised much interest , both for theory and the interpretation of experimental data ( e . ... | The study of interactions between different cortical regions at rest or during a task has considerably developed in the past decades thanks to progress in non-invasive imaging techniques , such as fMRI , EEG and MEG . These techniques have revealed that distant cortical areas exhibit specific correlated activity during... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"and",
"health",
"sciences",
"diagnostic",
"radiology",
"functional",
"magnetic",
"resonance",
"imaging",
"neural",
"networks",
"engineering",
"and",
"technology",
"signal",
"processing",
"random",
"variables",
"neuroscience",
"covariance",
"signal",
"filterin... | 2016 | Estimation of Directed Effective Connectivity from fMRI Functional Connectivity Hints at Asymmetries of Cortical Connectome |
Up to 50% of patients with the multibacillary form of leprosy are expected to develop acute systemic inflammatory episodes known as type 2 reactions ( T2R ) , thus aggravating their clinical status . Thalidomide rapidly improves T2R symptoms . But , due to its restricted use worldwide , novel alternative therapies are ... | Leprosy is caused by a mycobacterium that has a predilection for skin and nerve cells . The chronic course of the disease may be interrupted by acute inflammatory episodes known as reactions , despite effective bacterial killing with antibiotics . Reactions aggravate the patient’s clinical status and may become a medic... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"and",
"discussion"
] | [
"blood",
"cells",
"inflammatory",
"diseases",
"mycobacterium",
"leprae",
"medicine",
"and",
"health",
"sciences",
"immune",
"cells",
"pathology",
"and",
"laboratory",
"medicine",
"immunology",
"tropical",
"diseases",
"bacterial",
"diseases",
"signs",
"and",
"symptoms",
... | 2019 | Neutrophil extracellular traps contribute to the pathogenesis of leprosy type 2 reactions |
CHIP ( carboxyl terminus of heat shock 70-interacting protein ) has long been recognized as an active member of the cellular protein quality control system given the ability of CHIP to function as both a co-chaperone and ubiquitin ligase . We discovered a genetic disease , now known as spinocerebellar autosomal recessi... | CHIP is a multi-functional protein that bridges two opposing cellular processes: protein refolding and protein degradation . Mutations in CHIP are drivers of a debilitating and fatal disease , called spinocerebellar ataxia autosomal recessive 16 ( SCAR16 ) . Patients with CHIP mutations suffer from pathologies in both ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cognitive",
"neurology",
"medicine",
"and",
"health",
"sciences",
"molecular",
"probe",
"techniques",
"enzymes",
"neurodegenerative",
"diseases",
"brain",
"enzymology",
"vertebrates",
"mice",
"ubiquitin",
"ligases",
"animals",
"mammals",
"neuroscience",
"animal",
"models... | 2018 | Disrupted structure and aberrant function of CHIP mediates the loss of motor and cognitive function in preclinical models of SCAR16 |
During language processing , humans form complex embedded representations from sequential inputs . Here , we ask whether a “geometrical language” with recursive embedding also underlies the human ability to encode sequences of spatial locations . We introduce a novel paradigm in which subjects are exposed to a sequence... | The child’s acquisition of language has been suggested to rely on the ability to build hierarchically structured representations from sequential inputs . Does a similar mechanism also underlie the acquisition of geometrical rules ? Here , we introduce a learning situation in which human participants had to grasp simple... | [
"Abstract",
"Introduction",
"Results",
"Discussion"
] | [
"learning",
"children",
"linguistics",
"social",
"sciences",
"geometry",
"neuroscience",
"learning",
"and",
"memory",
"age",
"groups",
"adults",
"cognitive",
"psychology",
"mathematics",
"cognition",
"memory",
"families",
"language",
"syntax",
"behavior",
"people",
"and... | 2017 | The language of geometry: Fast comprehension of geometrical primitives and rules in human adults and preschoolers |
The high prevalence of HIV-1/AIDS in areas endemic for schistosomiasis and other helminthic infections has led to the hypothesis that parasites increase host susceptibility to immunodeficiency virus infection . We previously showed that rhesus macaques ( RM ) with active schistosomiasis were significantly more likely t... | Parasitic infections have been postulated to increase host susceptibility to HIV-1 . We previously demonstrated that rhesus monkeys with active schistosomiasis were significantly more likely to become systemically infected after intrarectal exposure to an R5-tropic clade C simian-human immunodeficiency virus then were ... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"infectious",
"diseases",
"viral",
"diseases",
"parasitic",
"diseases"
] | 2011 | Schistosoma mansoni Enhances Host Susceptibility to Mucosal but Not Intravenous Challenge by R5 Clade C SHIV |
Streptococcus pneumoniae produces the pore-forming toxin pneumolysin ( PLY ) , which is a member of the cholesterol-dependent cytolysin ( CDC ) family of toxins . The CDCs recognize and bind the 3β-hydroxyl group of cholesterol at the cell surface , which initiates membrane pore formation . The cholesterol transport li... | The pore-forming cholesterol-dependent cytolysins ( CDCs ) are one of the most widely disseminated virulence factors expressed by Gram-positive pathogens . Streptococcus pneumoniae is a major human pathogen and expresses a CDC termed pneumolysin ( PLY ) . PLY and most CDCs bind cholesterol as their cellular receptor , ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"infectious",
"diseases",
"medicine",
"and",
"health",
"sciences",
"animal",
"studies",
"bioassays",
"and",
"physiological",
"analysis",
"biology",
"and",
"life",
"sciences",
"microbiology",
"research",
"and",
"analysis",
"methods"
] | 2014 | Mouse, but Not Human, ApoB-100 Lipoprotein Cholesterol Is a Potent Innate Inhibitor of Streptococcus pneumoniae Pneumolysin |
Host-associated bacterial communities vary extensively between individuals , but it can be very difficult to determine the sources of this heterogeneity . Here , we demonstrate that stochastic bacterial community assembly in the Caenorhabditis elegans intestine is sufficient to produce strong interworm heterogeneity in... | Host-associated bacterial communities—also known as microbiomes—vary extensively between individuals , even among clones exposed to the same environment . The sources of this variation are not entirely understood and can be very difficult to determine . In this manuscript , we demonstrate experimentally how randomness ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"death",
"rates",
"invertebrates",
"medicine",
"and",
"health",
"sciences",
"demography",
"caenorhabditis",
"animals",
"animal",
"models",
"physiological",
"processes",
"caenorhabditis",
"elegans",
"luminescent",
"proteins",
"model",
"organisms",
"yellow",
"fluorescent",
... | 2017 | Stochastic assembly produces heterogeneous communities in the Caenorhabditis elegans intestine |
Smooth muscle is present in a wide variety of anatomical locations , such as blood vessels , various visceral organs , and hair follicles . Contraction of smooth muscle is central to functions as diverse as peristalsis , urination , respiration , and the maintenance of vascular tone . Despite the varied physiological r... | It has been estimated that the human body contains approximately 200–400 distinct cell types . These estimates are largely based on the morphological characteristics of cells and have yielded , among many others , the category of smooth muscle cells , which have a distinct appearance and are present in a wide variety o... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion",
"Supporting",
"Information"
] | [
"in",
"vitro",
"genetics",
"and",
"genomics",
"homo",
"(human)"
] | 2007 | Gene Expression Programs of Human Smooth Muscle Cells: Tissue-Specific Differentiation and Prognostic Significance in Breast Cancers |
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