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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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Many bacterial pathogens hijack macrophages to egress from the port of entry to the lymphatic drainage and/or bloodstream , causing dissemination of life-threatening infections . However , the underlying mechanisms are not well understood . Here , we report that Salmonella infection generates directional electric field... | Bacterial pathogens can invade and survive within macrophages and use them as a vehicle to reach important organs of a human body , resulting in life-threatening infections , but the underlying mechanisms are not well understood . Our current understanding is that macrophages are recruited to the infected site by sensi... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"blood",
"cells",
"medicine",
"and",
"health",
"sciences",
"immune",
"cells",
"pathology",
"and",
"laboratory",
"medicine",
"engineering",
"and",
"technology",
"electronics",
"cathodes",
"pathogens",
"immunology",
"electricity",
"microbiology",
"salmonellosis",
"bacterial... | 2019 | Infection-generated electric field in gut epithelium drives bidirectional migration of macrophages |
To regulate shape changes , motility and chemotaxis in eukaryotic cells , signal transduction pathways channel extracellular stimuli to the reorganization of the actin cytoskeleton . The complexity of such networks makes it difficult to understand the roles of individual components , let alone their interactions and mu... | Single cells , such as amoeba and white blood cells , change shape and move in response to environmental stimuli . Their behaviour is a consequence of the intracellular properties balanced by external forces . The internal regulation is modulated by several proteins that interact with one another and with membrane lipi... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biology",
"computational",
"biology",
"biophysics"
] | 2012 | How Cells Integrate Complex Stimuli: The Effect of Feedback from Phosphoinositides and Cell Shape on Cell Polarization and Motility |
In plants , innate immune responses are initiated by plasma membrane-located pattern recognition receptors ( PRRs ) upon recognition of elicitors , including exogenous pathogen-associated molecular patterns ( PAMPs ) and endogenous damage-associated molecular patterns ( DAMPs ) . Arabidopsis thaliana produces more than... | Both animals and plants have evolved mechanisms to trigger innate immunity through perception of exogenous and endogenous molecules . In the model plant Arabidopsis thaliana , endogenous molecules such as the peptide elicitor PEP1 activate the immune response by means of cell surface-located receptors . Here we describ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biology",
"and",
"life",
"sciences",
"plant",
"science"
] | 2014 | The Secreted Peptide PIP1 Amplifies Immunity through Receptor-Like Kinase 7 |
Cells interacting through an extracellular matrix ( ECM ) exhibit emergent behaviors resulting from collective intercellular interaction . In wound healing and tissue development , characteristic compaction of ECM gel is induced by multiple cells that generate tensions in the ECM fibers and coordinate their actions wit... | Collective behaviors of multiple cells interacting through an ECM are prohibitively complex to predict with a mechanistic computational model due to its highly nonlinear dynamics and high dimensional space . We introduce a methodology where nonlinear dynamics of single cells are superposed to predict collective multi-c... | [
"Abstract",
"Introduction",
"Results",
"Methods",
"Discussion"
] | [
"cell",
"physiology",
"focal",
"adhesions",
"random",
"variables",
"covariance",
"cell",
"polarity",
"simulation",
"and",
"modeling",
"developmental",
"biology",
"systems",
"science",
"mathematics",
"molecular",
"development",
"cellular",
"structures",
"and",
"organelles"... | 2019 | Multi-Cell ECM compaction is predictable via superposition of nonlinear cell dynamics linearized in augmented state space |
The African sleeping sickness parasite Trypanosoma brucei evades the host immune system through antigenic variation of its variant surface glycoprotein ( VSG ) coat . Although the T . brucei genome contains ∼1500 VSGs , only one VSG is expressed at a time from one of about 15 subtelomeric VSG expression sites ( ESs ) .... | Trypanosoma brucei causes African sleeping sickness , endemic to sub-Saharan Africa . Bloodstream form T . brucei is covered with a dense coat of variant surface glycoprotein ( VSG ) . Only one VSG is expressed at a time out of a vast repertoire of ∼1500 VSGs . The active VSG is transcribed in a telomeric VSG expressio... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"molecular",
"cell",
"biology",
"molecular",
"biology",
"gene",
"expression",
"genetics",
"epigenetics",
"biology",
"microbiology",
"host-pathogen",
"interaction",
"chromatin",
"genetics",
"and",
"genomics",
"parasitology"
] | 2012 | Histone H1 Plays a Role in Heterochromatin Formation and VSG Expression Site Silencing in Trypanosoma brucei |
Protein kinases C ( PKCs ) and extracellular signal-regulated kinases ( ERKs ) are evolutionary conserved cell signalling enzymes that coordinate cell function . Here we have employed biochemical approaches using ‘smart’ antibodies and functional screening to unravel the importance of these enzymes to Schistosoma manso... | Parasitic blood flukes , also called schistosomes , cause human schistosomiasis , a neglected tropical disease and major public health problem in developing countries , especially sub-Saharan Africa . Sustainable control of schistosomiasis is difficult , mainly because the complex life cycle of the parasite involves a ... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results/Discussion"
] | [
"erk",
"signaling",
"cascade",
"protein",
"kinase",
"signaling",
"cascade",
"protein",
"kinase",
"c",
"signaling",
"signal",
"transduction",
"infectious",
"diseases",
"medicine",
"and",
"health",
"sciences",
"helminth",
"infections",
"cell",
"biology",
"biology",
"and... | 2014 | Protein Kinase C and Extracellular Signal-Regulated Kinase Regulate Movement, Attachment, Pairing and Egg Release in Schistosoma mansoni |
Extracellular guidance cues steer axons towards their targets by eliciting morphological changes in the growth cone . A key part of this process is the asymmetric recruitment of the cytoplasmic scaffolding protein MIG-10 ( lamellipodin ) . MIG-10 is thought to asymmetrically promote outgrowth by inducing actin polymeri... | To form neural circuits , axons must navigate through the developing nervous system to reach their correct targets . Axon navigation is led by the growth cone , a structure at the tip of the growing axon that responds to extracellular guidance cues . Many of these guidance cues and their receptors have been identified ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"developmental",
"biology",
"developmental",
"neuroscience",
"axon",
"guidance",
"biology",
"morphogenesis",
"neuroscience"
] | 2012 | MIG-10 Functions with ABI-1 to Mediate the UNC-6 and SLT-1 Axon Guidance Signaling Pathways |
Mutations in LACERATA ( LCR ) , FIDDLEHEAD ( FDH ) , and BODYGUARD ( BDG ) cause a complex developmental syndrome that is consistent with an important role for these Arabidopsis genes in cuticle biogenesis . The genesis of their pleiotropic phenotypes is , however , poorly understood . We provide evidence that neither ... | As the skin of a plant , the epidermis mediates a broad set of protective functions which includes defense against abiotic environmental stresses and pathogens . The majority of its barrier capacity is localized to the outermost cell wall , which is covered by a waxy cuticle . Several distinct cuticular mutants in the ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"plant",
"biology/plant-biotic",
"interactions",
"plant",
"biology/plant-environment",
"interactions",
"plant",
"biology/plant",
"growth",
"and",
"development",
"plant",
"biology/plant",
"biochemistry",
"and",
"physiology",
"plant",
"biology/plant",
"genetics",
"and",
"gene",... | 2009 | Dissection of the Complex Phenotype in Cuticular Mutants of Arabidopsis Reveals a Role of SERRATE as a Mediator |
Candida albicans is a human commensal and clinically important fungal pathogen that grows as both yeast and hyphal forms during human , mouse and zebrafish infection . Reactive oxygen species ( ROS ) produced by NADPH oxidases play diverse roles in immunity , including their long-appreciated function as microbicidal ox... | Over 45 years ago chronic granulomatous disease ( CGD ) was ascribed to a failure of neutrophils to mount a respiratory burst , and it is now known to result from primary genetic deficiencies in the phagocyte NADPH oxidase complex . Recent work suggests that reactive oxygen species produced by NADPH oxidases have other... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"&",
"Methods"
] | [] | 2013 | NADPH Oxidase-Driven Phagocyte Recruitment Controls Candida albicans Filamentous Growth and Prevents Mortality |
When patterns are set during embryogenesis , it is expected that they are straightly established rather than subsequently modified . The patterning of the three mouse molars is , however , far from straight , likely as a result of mouse evolutionary history . The first-formed tooth signaling centers , called MS and R2 ... | Organs , such as teeth , that form regular patterns are of particular interest to developmental biologists . These patterns are established early in the embryo , and it has generally been thought the organs appear in what is their final position . Recent studies that focus on the dynamics of patterning events challenge... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"cell",
"motility",
"medicine",
"and",
"health",
"sciences",
"developmental",
"biology",
"embryos",
"morphogenesis",
"cellular",
"structures",
"and",
"organelles",
"pattern",
"formation",
"digestive",
"system",
"embryology",
"embryonic",
"pattern",
"formation",
"biologica... | 2019 | Modeling Edar expression reveals the hidden dynamics of tooth signaling center patterning |
A common property of aging in all animals is that chronologically and genetically identical individuals age at different rates . To unveil mechanisms that influence aging variability , we identified markers of remaining lifespan for Caenorhabditis elegans . In transgenic lines , we expressed fluorescent reporter constr... | One of the long-standing mysteries in aging is that some individuals die early whereas others die late . The age at which a specific individual will die is difficult or impossible to predict , and thus a fundamental aspect of aging in all animals is that it is stochastic . Aging stochasticity is particularly interestin... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"aging",
"physiological",
"processes",
"developmental",
"biology",
"organism",
"development",
"evolutionary",
"biology",
"physiology",
"biology",
"anatomy",
"and",
"physiology"
] | 2011 | Variable Pathogenicity Determines Individual Lifespan in Caenorhabditis elegans |
Dominance hierarchies are group-level properties that emerge from the aggression of individuals . Although individuals can gain critical benefits from their position in a hierarchy , we do not understand how real-world hierarchies form . Nor do we understand what signals and decision-rules individuals use to construct ... | An individual’s success depends critically on socially-constructed properties such as rank . A detailed study of two independent captive parakeet groups reveals how these properties come into being . We show that individuals can use localized patterns in the aggression network to learn the relative ranks of individuals... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | Social Feedback and the Emergence of Rank in Animal Society |
Phagocytosis is required for proliferation and pathogenesis of Entamoeba histolytica and erythrophagocytosis is considered to be a marker of invasive amoebiasis . Ca2+ has been found to play a central role in the process of phagocytosis . However , the molecular mechanisms and the signalling mediated by Ca2+ still rema... | Entamoeba histolytica is one of the major causes of morbidity and mortality in developing countries . Phagocytosis plays an important role in both survival and virulence and has been used as a virulence marker . Inhibition of phagocytosis leads to a defect in cellular proliferation . Therefore , the molecules that part... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"parastic",
"protozoans",
"signal",
"transduction",
"molecular",
"cell",
"biology",
"entamoeba",
"histolytica",
"parasitology",
"protozoology",
"biology",
"microbiology",
"host-pathogen",
"interaction"
] | 2012 | The Calmodulin-like Calcium Binding Protein EhCaBP3 of Entamoeba histolytica Regulates Phagocytosis and Is Involved in Actin Dynamics |
The vertebrate gut harbors a vast community of bacterial mutualists , the composition of which is modulated by the host immune system . Many gastrointestinal ( GI ) diseases are expected to be associated with disruptions of host-bacterial interactions , but relatively few comprehensive studies have been reported . We h... | Bacterial mutualists within the gastrointestinal tract aid digestion , promote development of the gut immune system , and provide competitive barriers to pathogen invasion . The host , in return , provides bacteria with safe housing and food during lean times . The composition of the gut microbiota is controlled in par... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biotechnology",
"primates",
"infectious",
"diseases",
"pathology",
"virology",
"microbiology",
"computational",
"biology",
"molecular",
"biology",
"genetics",
"and",
"genomics",
"eubacteria"
] | 2008 | The Macaque Gut Microbiome in Health, Lentiviral Infection, and Chronic Enterocolitis |
Circadian entrainment is necessary for rhythmic physiological functions to be appropriately timed over the 24-hour day . Disruption of circadian rhythms has been associated with sleep and neuro-behavioral impairments as well as cancer . To date , light is widely accepted to be the most powerful circadian synchronizer ,... | The robust timing , or phase , of the circadian clock is critical in directing and synchronizing molecular , cellular , and organismal behaviors . The clock's failure to maintain precision and adaption is associated with sleeping disorders , depression , and cancer . To better study and control the timing of circadian ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"computational",
"biology/systems",
"biology",
"computational",
"biology/transcriptional",
"regulation"
] | 2008 | Circadian Phase Resetting via Single and Multiple Control Targets |
Errors throughout gene expression are likely deleterious , hence genomes are under selection to ameliorate their consequences . Additional stop codons ( ASCs ) are in-frame nonsense ‘codons’ downstream of the primary stop which may be read by translational machinery should the primary stop have been accidentally read t... | In all organisms , gene expression is error-prone . One such error , translational read-through , occurs where the primary stop codon of an expressed gene is missed by the translational machinery . Failure to terminate is likely to be costly , hence genomes are under selection to prevent this from happening . One propo... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"bacteriology",
"3'",
"utr",
"messenger",
"rna",
"microbiology",
"untranslated",
"regions",
"bacterial",
"genetics",
"microbial",
"genetics",
"bacteria",
"microbial",
"genomics",
"bacterial",
"genomics",
"gene",
"expression",
"mollicutes",
"comparative",
"genomics",
"bioc... | 2019 | In eubacteria, unlike eukaryotes, there is no evidence for selection favouring fail-safe 3’ additional stop codons |
Homologous recombination is central to repair DNA double-strand breaks , either accidently arising in mitotic cells or in a programed manner at meiosis . Crossovers resulting from the repair of meiotic breaks are essential for proper chromosome segregation and increase genetic diversity of the progeny . However , mecha... | Homologous recombination is a DNA repair mechanism that is essential to preserve the integrity of genetic information and thus to prevent cancer formation . Homologous recombination is also used during sexual reproduction to generate genetic diversity in the offspring by shuffling parental chromosomes . Here , we ident... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"taxonomy",
"protein",
"interactions",
"brassica",
"dna-binding",
"proteins",
"phylogenetics",
"data",
"management",
"model",
"organisms",
"phylogenetic",
"analysis",
"experimental",
"organism",
"systems",
"dna",
"plants",
"homologous",
"recombination",
"research",
"and",
... | 2018 | FIGL1 and its novel partner FLIP form a conserved complex that regulates homologous recombination |
We compared conscious and nonconscious processing of briefly flashed words using a visual masking procedure while recording intracranial electroencephalogram ( iEEG ) in ten patients . Nonconscious processing of masked words was observed in multiple cortical areas , mostly within an early time window ( <300 ms ) , acco... | What is the neural signature of the conscious perception of a visual stimulus ? To address this question , we recorded neural activity directly from the brains of human subjects ( who were undergoing neural surgery for medical reasons ) . This rare opportunity afforded greater spatial and temporal resolution than nonin... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"neuroscience"
] | 2009 | Converging Intracranial Markers of Conscious Access |
Ebola virus ( EBOV ) , family Filoviridae , emerged in 1976 on the African continent . Since then it caused several outbreaks of viral hemorrhagic fever in humans with case fatality rates up to 90% and remains a serious Public Health concern and biothreat pathogen . The most pathogenic and best-studied species is Zaire... | It is currently believed that Ebola virus ( EBOV ) enters cells via macropinocytosis following which , the cysteine proteases cathepsin B and L ( CatB , CatL ) cleave the viral glycoprotein ( GP ) allowing exposure of its core receptor-binding and fusion domain thus facilitating subsequent infection . We studied the ef... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"emerging",
"infectious",
"diseases",
"virology",
"biology",
"microbiology",
"pathogenesis"
] | 2012 | Cathepsin B & L Are Not Required for Ebola Virus Replication |
Rift Valley fever virus ( RVFV ) causes a viral zoonosis , with discontinuous epizootics and sporadic epidemics , essentially in East Africa . Infection with this virus causes severe illness and abortion in sheep , goats , and cattle as well as other domestic animals . Humans can also be exposed through close contact w... | Rift valley fever virus ( RVFV ) is an arthropod-borne virus that causes serious illness in both animals and humans . RVFV is transmitted by direct contact with infectious tissues or by the bites of infected mosquito species of the Aedes and Culex genuses . Its distribution in tropical forests in central Africa is poor... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion",
"Conclusion"
] | [
"invertebrates",
"livestock",
"medicine",
"and",
"health",
"sciences",
"rift",
"valley",
"fever",
"virus",
"immune",
"physiology",
"pathology",
"and",
"laboratory",
"medicine",
"ruminants",
"pathogens",
"immunology",
"rna",
"extraction",
"microbiology",
"vertebrates",
"... | 2016 | Rift Valley Fever Virus Circulating among Ruminants, Mosquitoes and Humans in the Central African Republic |
The Hedgehog ( Hh ) signaling pathway plays a key role in cell fate specification , proliferation , and survival during mammalian development . Cells require a small organelle , the primary cilium , to respond properly to Hh signals and the key regulators of Hh signal transduction exhibit dynamic localization to this o... | The importance of cilia in development and disease has become broadly appreciated in recent years due in part to their roles in signal transduction . Despite this attention , crucial aspects of ciliary assembly and function , such as the mechanisms controlling ciliary assembly and the signal transduction events occurri... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"medicine",
"and",
"health",
"sciences",
"pathology",
"and",
"laboratory",
"medicine",
"enzymes",
"pathogens",
"enzymology",
"phosphatases",
"developmental",
"biology",
"regulator",
"genes",
"mathematics",
"statistics",
"(mathematics)",
"gene",
"types",
"embryos",
"cellul... | 2017 | Cell Cycle-Related Kinase (CCRK) regulates ciliogenesis and Hedgehog signaling in mice |
A large number of highly pathogenic bacteria utilize secretion systems to translocate effector proteins into host cells . Using these effectors , the bacteria subvert host cell processes during infection . Legionella pneumophila translocates effectors via the Icm/Dot type-IV secretion system and to date , approximately... | Many pathogenic bacteria exert their function by translocating a set of proteins , termed effectors , into the cytoplasm of their host cell . These effectors subvert various host cell processes for the benefit of the bacteria . Our goal in this study was to identify novel effectors in a genomic scale , towards a better... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"infectious",
"diseases/bacterial",
"infections",
"computational",
"biology/systems",
"biology",
"computational",
"biology/genomics",
"infectious",
"diseases/respiratory",
"infections"
] | 2009 | Genome-Scale Identification of Legionella pneumophila Effectors Using a Machine Learning Approach |
Exonuclease-mediated RNA decay in plants is known to be involved primarily in endogenous RNA degradation , and several RNA decay components have been suggested to attenuate RNA silencing possibly through competing for RNA substrates . In this paper , we report that overexpression of key cytoplasmic 5’–3’ RNA decay path... | RNA silencing and RNA decay are two essential pathways that determine the fate of cellular RNA molecules . RNA decay has been suggested to compete with RNA silencing for the RNA substrates and thus to suppress RNA silencing in plants . In this report , we show that the deficiency of key cytoplasmic 5’–3’ RNA decay path... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"biotechnology",
"plant",
"anatomy",
"rna",
"interference",
"gene",
"regulation",
"brassica",
"viruses",
"plant",
"science",
"model",
"organisms",
"rna",
"viruses",
"genetically",
"modified",
"plants",
"experimental",
"organism",
"systems",
"epigenetics",
"molecular",
"... | 2018 | RNA decay is an antiviral defense in plants that is counteracted by viral RNA silencing suppressors |
The protein complex known as cohesin binds pericentric regions and other sites of eukaryotic genomes to mediate cohesion of sister chromatids . In budding yeast Saccharomyces cerevisiae , cohesin also binds silent chromatin , a repressive chromatin structure that functionally resembles heterochromatin of higher eukaryo... | Replication of chromosomes in each cell cycle produces pairs of identical sister chromatids that are held together by a protein complex known as cohesin . At mitosis , cohesin is dismantled , permitting segregation of one full set of chromosomes to each daughter cell . Cohesin binds at discrete sites along chromatids ,... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biology"
] | 2011 | Targeted Sister Chromatid Cohesion by Sir2 |
RNA silencing is one of the main defense mechanisms employed by plants to fight viruses . In change , viruses have evolved silencing suppressor proteins to neutralize antiviral silencing . Since the endogenous and antiviral functions of RNA silencing pathway rely on common components , it was suggested that viral suppr... | To better understand the specific effect of p19 viral suppressor of RNA silencing ( VSR ) on antiviral silencing and endogenous small RNA pathways , we generated a N . benthamiana plant ( p19syn ) capable of sustaining the ectopic expression of the Cymbidium ringspot virus ( CymRSV ) p19 upon infection with a suppresso... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biotechnology",
"plant",
"anatomy",
"rna",
"interference",
"gene",
"regulation",
"viruses",
"micrornas",
"plant",
"science",
"rna",
"viruses",
"immunoprecipitation",
"genetically",
"modified",
"plants",
"epigenetics",
"plants",
"flowering",
"plants",
"genetic",
"engineer... | 2016 | Distinct Effects of p19 RNA Silencing Suppressor on Small RNA Mediated Pathways in Plants |
Fibromuscular dysplasia ( FMD ) is a nonatherosclerotic vascular disease leading to stenosis , dissection and aneurysm affecting mainly the renal and cerebrovascular arteries . FMD is often an underdiagnosed cause of hypertension and stroke , has higher prevalence in females ( ~80% ) but its pathophysiology is unclear ... | Fibromuscular Dysplasia ( FMD ) is a vascular disease characterized by a succession of occlusions and dilatation of medium-sized arteries ( e . g renal , carotid or coronary arteries ) with important health consequences , mainly resistant hypertension and stroke . FMD is an atypical vascular disease because it is not a... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"medicine",
"and",
"health",
"sciences",
"cardiovascular",
"anatomy",
"renal",
"arteries",
"fibroblasts",
"genetic",
"predisposition",
"arteries",
"connective",
"tissue",
"cells",
"blood",
"vessels",
"animal",
"cells",
"connective",
"tissue",
"biological",
"tissue",
"ge... | 2016 | PHACTR1 Is a Genetic Susceptibility Locus for Fibromuscular Dysplasia Supporting Its Complex Genetic Pattern of Inheritance |
The proper biological functioning of proteins often relies on the occurrence of coordinated fluctuations around their native structure , or on their ability to perform wider and sometimes highly elaborated motions . Hence , there is considerable interest in the definition of accurate coarse-grained descriptions of prot... | Decades of experimental evidence have underlined the fact that protein structures can hardly be considered as static objects . To understand how a protein achieves its biological purpose , it is therefore quite often necessary to unravel the complexity of its dynamical behavior . However , the definition of accurate an... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [] | 2013 | Effective Harmonic Potentials: Insights into the Internal Cooperativity and Sequence-Specificity of Protein Dynamics |
Damage tolerance mechanisms mediating damage-bypass and gap-filling are crucial for genome integrity . A major damage tolerance pathway involves recombination and is referred to as template switch . Template switch intermediates were visualized by 2D gel electrophoresis in the proximity of replication forks as X-shaped... | Completion of DNA replication is essential for cellular survival . Both endogenous processes and exogenous DNA damage can lead to lesions that impede DNA replication or result in an accumulation of DNA gaps . Recombination plays an important role in facilitating replication completion under conditions of replication st... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biochemistry/replication",
"and",
"repair",
"genetics",
"and",
"genomics/gene",
"function",
"genetics",
"and",
"genomics/chromosome",
"biology"
] | 2010 | Replication and Recombination Factors Contributing to Recombination-Dependent Bypass of DNA Lesions by Template Switch |
Although increased capillary permeability is the major clinical feature associated with severe dengue infections the mechanisms underlying this phenomenon remain unclear . Dextran clearance methodology has been used to investigate the molecular sieving properties of the microvasculature in clinical situations associate... | Dengue is a potentially serious common viral infection with no specific treatment . Plasma leakage from small blood vessels is the major severe problem , but we do not understand how this occurs . Techniques using controlled infusions of carbohydrate solutions , combined with careful measurement of the rate that the di... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"immune",
"physiology",
"clinical",
"research",
"design",
"integrative",
"physiology",
"dengue",
"anatomy",
"and",
"physiology",
"immunology",
"pediatrics",
"critical",
"care",
"team",
"organization",
"physiological",
"processes",
"hemorrhagic",
"fever",
"with... | 2011 | Dextran Fractional Clearance Studies in Acute Dengue Infection |
Efficient adaptation to iron starvation is an essential virulence determinant of the most common human mold pathogen , Aspergillus fumigatus . Here , we demonstrate that the cytosolic monothiol glutaredoxin GrxD plays an essential role in iron sensing in this fungus . Our studies revealed that ( i ) GrxD is essential f... | Aspergillus fumigatus is a ubiquitous saprophytic mold and the major causative pathogen causing life-threatening aspergillosis . To improve therapy , there is an urgent need for a better understanding of the fungal physiology . We have previously shown that adaptation to iron starvation is an essential virulence attrib... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"methods"
] | [
"aspergillus",
"fumigatus",
"medicine",
"and",
"health",
"sciences",
"protein",
"interactions",
"pathology",
"and",
"laboratory",
"medicine",
"chemical",
"compounds",
"aspergillus",
"gene",
"regulation",
"pathogens",
"regulatory",
"proteins",
"microbiology",
"dna-binding",
... | 2019 | The monothiol glutaredoxin GrxD is essential for sensing iron starvation in Aspergillus fumigatus |
Partial duplication of genetic material is prevalent in eukaryotes and provides potential for evolution of new traits . Prokaryotes , which are generally haploid in nature , can evolve new genes by partial chromosome duplication , known as merodiploidy . Little is known about merodiploid formation during genetic exchan... | Merodiploids are defined as cells possessing a partial duplication of their genetic material , which potentially allows evolution of new genes . Historically , some have been observed in studies of natural genetic transformation . Transformation allows the bacteria to take up foreign DNA and incorporate it into their g... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2013 | Natural Genetic Transformation Generates a Population of Merodiploids in Streptococcus pneumoniae |
Spo11 is the topoisomerase-like enzyme responsible for the induction of the meiosis-specific double strand breaks ( DSBs ) , which initiates the recombination events responsible for proper chromosome segregation . Nineteen PCR-induced alleles of SPO11 were identified and characterized genetically and cytologically . Re... | Most eukaryotes depend on the meiotic division to segregate each pair of chromosomes properly into their gametes . Chromosome segregation mistakes happening during meiosis are responsible for most miscarriages as well as many diseases such as Down's and Kleinfelter's syndromes in humans . Proper chromosome segregation ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2013 | High Throughput Sequencing Reveals Alterations in the Recombination Signatures with Diminishing Spo11 Activity |
The evolution of drug resistant bacteria is a severe public health problem , both in hospitals and in the community . Currently , some countries aim at concentrating highly specialized services in large hospitals in order to improve patient outcomes . Emergent resistant strains often originate in health care facilities... | The increasing spread of bacteria , which are resistant to antibiotics , is a serious threat to clinical care . Currently , several countries aim at concentrating highly specialized services in large hospitals in order to improve patient outcomes . However , empirical studies have shown that resistance levels correlate... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"infectious",
"diseases/epidemiology",
"and",
"control",
"of",
"infectious",
"diseases",
"infectious",
"diseases/antimicrobials",
"and",
"drug",
"resistance"
] | 2011 | On Being the Right Size: The Impact of Population Size and Stochastic Effects on the Evolution of Drug Resistance in Hospitals and the Community |
The β1i , β2i and β5i immunoproteasome subunits have an important role in defining the repertoire of MHC class I-restricted epitopes . However , the impact of combined deficiency of the three immunoproteasome subunits in the development of protective immunity to intracellular pathogens has not been investigated . Here ... | CD8+ t lymphocytes are cells of the immune system that mediate control of intracellular infections by viruses , prokaryote as well as eukaryote pathogens . To confer protection , these lymphocytes need to be elicited by pathogen peptides that are presented in association with MHC class I molecules . The degradation of ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"blood",
"cells",
"medicine",
"and",
"health",
"sciences",
"immune",
"cells",
"immune",
"physiology",
"spleen",
"immunology",
"parasitic",
"diseases",
"parasitic",
"protozoans",
"clinical",
"medicine",
"protozoans",
"cytotoxic",
"t",
"cells",
"research",
"and",
"analy... | 2016 | The Combined Deficiency of Immunoproteasome Subunits Affects Both the Magnitude and Quality of Pathogen- and Genetic Vaccination-Induced CD8+ T Cell Responses to the Human Protozoan Parasite Trypanosoma cruzi |
Decreased bioavailability of nitric oxide ( NO ) is a major contributor to the pathophysiology of severe falciparum malaria . Tetrahydrobiopterin ( BH4 ) is an enzyme cofactor required for NO synthesis from L-arginine . We hypothesized that systemic levels of BH4 would be decreased in children with cerebral malaria , c... | Vascular nitric oxide ( NO ) bioavailability is decreased in severe falciparum malaria and associated with microvascular dysfunction , increased activation of the cells lining blood vessels ( endothelial cells ) and increased parasite biomass . Tetrahydrobiopterin ( BH4 ) is an essential cofactor for nitric oxide synth... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | Impaired Systemic Tetrahydrobiopterin Bioavailability and Increased Oxidized Biopterins in Pediatric Falciparum Malaria: Association with Disease Severity |
While the domestication history of Asian rice has been extensively studied , details of the evolution of African rice remain elusive . The inner Niger delta has been suggested as the center of origin but molecular data to support this hypothesis is lacking . Here , we present a comprehensive analysis of the evolutionar... | For many crops it is not clear how they were domesticated from their wild progenitors . Transition from a wild to domesticated state required a series of genetic changes , and studying the evolutionary origin of these domestication-causing mutations are key to understanding the domestication origins of a crop . Moreove... | [
"Abstract",
"Introduction",
"Results",
"and",
"discussion",
"Materials",
"and",
"methods"
] | [
"biogeography",
"animal",
"types",
"taxonomy",
"ecology",
"and",
"environmental",
"sciences",
"niger",
"domestic",
"animals",
"population",
"genetics",
"geographical",
"locations",
"animals",
"genetic",
"mapping",
"mutation",
"phylogenetics",
"data",
"management",
"rice",... | 2019 | The complex geography of domestication of the African rice Oryza glaberrima |
Developmental patterning involves the progressive subdivision of tissue into different cell types by invoking different genetic programs . In particular , cell-cell signaling is a universally deployed means of specifying distinct cell fates in adjacent cells . For this mechanism to be effective , it is essential that a... | Much of the process of animal development is concerned with giving cells specific instructions as to what type of cell they are to become—their “fate” . Often , it is even necessary to assign very different fates to cells that are adjacent to each other in the tissue . In such cases , cell-to-cell signaling is frequent... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"invertebrates",
"animals",
"notch",
"signaling",
"dna",
"transcription",
"animal",
"models",
"developmental",
"biology",
"drosophila",
"melanogaster",
"model",
"organisms",
"experimental",
"organism",
"systems",
"sequence",
"motif",
"analysis",
"morphogenesis",
"drosophila... | 2018 | Lateral inhibition: Two modes of non-autonomous negative autoregulation by neuralized |
Most of the Leishmania genome is reported to be constitutively expressed during the life cycle of the parasite , with a few regulated genes . Inter-species comparative transcriptomics evidenced a low number of species-specific differences related to differentially distributed genes or the differential regulation of con... | Leishmania is a group of parasites ( Protozoa , Trypanosomatidae ) responsible for a wide spectrum of clinical forms . Among the factors explaining this phenotypic polymorphism , parasite features are important contributors . One approach to identify them consists in characterizing the gene expression profiles througho... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"biology",
"microbiology",
"parasitology"
] | 2011 | Comparative Gene Expression Analysis throughout the Life Cycle of
Leishmania braziliensis: Diversity of Expression Profiles
among Clinical Isolates |
Sickle cell disease ( SCD ) is a hematological disorder leading to blood vessel occlusion accompanied by painful episodes and even death . Red blood cells ( RBCs ) of SCD patients have diverse shapes that reveal important biomechanical and bio-rheological characteristics , e . g . their density , fragility , adhesive p... | There are many hematological disorders in the human circulation involving significant alteration of the shape and size of red blood cells ( RBCs ) , e . g . sickle cell disease ( SCD ) , spherocytosis , diabetes , HIV , etc . These morphological alterations reflect subtle multiscale processes taking place at the protei... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results/discussion"
] | [
"blood",
"cells",
"medicine",
"and",
"health",
"sciences",
"neural",
"networks",
"genetic",
"diseases",
"neuroscience",
"factor",
"analysis",
"mathematics",
"red",
"blood",
"cells",
"statistics",
"(mathematics)",
"artificial",
"intelligence",
"hemoglobinopathies",
"autoso... | 2017 | A deep convolutional neural network for classification of red blood cells in sickle cell anemia |
The flavoenzyme pyranose dehydrogenase ( PDH ) from the litter decomposing fungus Agaricus meleagris oxidizes many different carbohydrates occurring during lignin degradation . This promiscuous substrate specificity makes PDH a promising catalyst for bioelectrochemical applications . A generalized approach to simulate ... | Generally , enzymes are perceived as being specific for both their substrates and the reaction they catalyze . This standard paradigm started to shift and currently enzyme promiscuity towards various substrates is perceived rather as the rule than the exception . Enzyme promiscuity seems to be vital for proteins to acq... | [
"Abstract",
"Introduction",
"Methods",
"Results/Discussion",
"Conclusions"
] | [
"computational",
"chemistry",
"molecular",
"dynamics",
"biology",
"and",
"life",
"sciences",
"chemistry",
"physical",
"sciences",
"computational",
"biology",
"biophysics",
"biophysical",
"simulations"
] | 2014 | Pyranose Dehydrogenase Ligand Promiscuity: A Generalized Approach to Simulate Monosaccharide Solvation, Binding, and Product Formation |
Cryptococcosis is an important fungal infection in immunocompromised individuals , especially those infected with HIV . In Brazil , despite the free availability of antiretroviral therapy ( ART ) in the public health system , the mortality rate due to Cryptococcus neoformans meningitis is still high . To obtain a more ... | The members of the Cryptococcus neoformans / Cryptococcus gattii species complex are the cause of cryptococcosis , a life-threatening human disease responsible for 624 , 000 deaths annually . Infection is acquired through inhalation of dehydrated yeast cells from environmental sources . After reaching the lungs , the f... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"cryptococcus",
"neoformans",
"medicine",
"and",
"health",
"sciences",
"cryptococcus",
"gattii",
"cryptococcus",
"pathology",
"and",
"laboratory",
"medicine",
"pathogens",
"population",
"genetics",
"geographical",
"locations",
"microbiology",
"fungi",
"phylogenetic",
"analy... | 2017 | MLST-Based Population Genetic Analysis in a Global Context Reveals Clonality amongst Cryptococcus neoformans var. grubii VNI Isolates from HIV Patients in Southeastern Brazil |
Invertebrates rely on innate immunity to respond to the entry of foreign microorganisms . One of the important innate immune responses in arthropods is the activation of prophenoloxidase ( proPO ) by a proteolytic cascade finalized by the proPO-activating enzyme ( ppA ) , which leads to melanization and the elimination... | Melanization is an important reaction in most multicellular organisms , both animals and plants . The initiation steps of this reaction in invertebrates are catalyzed by the prophenoloxidase ( proPO ) activating system a proteolytic enzyme cascade , which primary function is to recognize cell wall products from microor... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biology",
"and",
"life",
"sciences",
"immunology",
"evolutionary",
"biology",
"evolutionary",
"immunology",
"immune",
"response",
"immune",
"system"
] | 2014 | Caspase-1-Like Regulation of the proPO-System and Role of ppA and Caspase-1-Like Cleaved Peptides from proPO in Innate Immunity |
Human African trypanosomiasis ( HAT ) or sleeping sickness leads to a complex neuropsychiatric syndrome with characteristic sleep alterations . Current division into a first , hemolymphatic stage and second , meningoencephalitic stage is primarily based on the detection of white blood cells and/or trypanosomes in the c... | The clinical picture of the parasitic disease human African trypanosomiasis ( HAT , also called sleeping sickness ) is dominated by sleep alterations . We here used actigraphy to evaluate patients affected by the Gambiense form of HAT . Actigraphy is based on the use of battery-run , wrist-worn devices similar to watch... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"infectious",
"diseases",
"diagnostic",
"medicine",
"neglected",
"tropical",
"diseases"
] | 2012 | Actigraphy in Human African Trypanosomiasis as a Tool for Objective Clinical Evaluation and Monitoring: A Pilot Study |
Genetic analyses in Drosophila epithelia have suggested that the phenomenon of “cell competition” could participate in organ homeostasis . It has been speculated that competition between different cell populations within a growing organ might play a role as either tumor promoter or tumor suppressor , depending on the c... | One of the major challenges of developmental biology and cancer research is to get a better understanding of how different signals regulate proper organ growth and prevent tumor formation . Even though there is a strong correlation between tumor progression and Myc family misexpression or Hippo signaling pathway malfun... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"cell",
"biology/cell",
"growth",
"and",
"division",
"genetics",
"and",
"genomics/cancer",
"genetics",
"developmental",
"biology",
"cell",
"biology/cellular",
"death",
"and",
"stress",
"responses"
] | 2010 | dMyc Functions Downstream of Yorkie to Promote the Supercompetitive Behavior of Hippo Pathway Mutant Cells |
The Ypd1 phosphorelay protein is a central constituent of fungal two-component signal transduction pathways . Inhibition of Ypd1 in Saccharomyces cerevisiae and Cryptococcus neoformans is lethal due to the sustained activation of the ‘p38-related’ Hog1 stress-activated protein kinase ( SAPK ) . As two-component signall... | As fungi-attributed human deaths are increasing , there is an urgent need to develop new antifungal treatments . Two-component related proteins , such as the Ypd1 phosphorelay protein , have been heralded as antifungal targets as they are not found in humans and because inactivation of YPD1 in several different fungi c... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"blood",
"cells",
"phosphorylation",
"medicine",
"and",
"health",
"sciences",
"immune",
"cells",
"pathology",
"and",
"laboratory",
"medicine",
"pathogens",
"animal",
"models",
"of",
"disease",
"immunology",
"microbiology",
"animal",
"models",
"fungi",
"model",
"organi... | 2017 | Blocking two-component signalling enhances Candida albicans virulence and reveals adaptive mechanisms that counteract sustained SAPK activation |
Central questions in regenerative biology include how stem cells are maintained and how they transition from self-renewal to differentiation . Germline stem cells ( GSCs ) in Caeno-rhabditis elegans provide a tractable in vivo model to address these questions . In this system , Notch signaling and PUF RNA binding prote... | Stem cells lie at the heart of metazoan development , regeneration , and tissue homeostasis , but the molecular basis of their regulation is poorly understood in their natural context within an animal . Here we investigate this problem in the nematode gonad , where germline stem cells are maintained by Notch signaling ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"methods"
] | [
"tumor",
"stem",
"cells",
"medicine",
"and",
"health",
"sciences",
"reproductive",
"system",
"gonads",
"nuclear",
"staining",
"population",
"genetics",
"gene",
"pool",
"cell",
"differentiation",
"germ",
"cells",
"developmental",
"biology",
"stem",
"cells",
"population... | 2017 | SYGL-1 and LST-1 link niche signaling to PUF RNA repression for stem cell maintenance in Caenorhabditis elegans |
Replicating viruses have broad applications in biomedicine , notably in cancer virotherapy and in the design of attenuated vaccines; however , uncontrolled virus replication in vulnerable tissues can give pathology and often restricts the use of potent strains . Increased knowledge of tissue-selective microRNA expressi... | Attenuated viruses have found important applications in medicine , including their use as vaccines ( notably for measles , mumps , polio , influenza , and chicken pox ) and their experimental development as selective cancer-killing agents , so-called “virotherapy . ” Wild-type versions are often most effective in both ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"microbiology/applied",
"microbiology"
] | 2009 | Use of Tissue-Specific MicroRNA to Control Pathology of Wild-Type Adenovirus without Attenuation of Its Ability to Kill Cancer Cells |
Rodents are reservoirs and hosts for several zoonotic diseases such as plague , leptospirosis , and leishmaniasis . Rapid development of industry and agriculture , as well as climate change throughout the globe , has led to change or increase in occurrence of rodent-borne diseases . Considering the distribution of rode... | This review showed that approximately half of the known rodent-borne diseases have been reported in Iran , half of which were reported both in humans and rodents . Most of the diseases were bacterial and parasitic . Plague , leishmaniasis , and hymenolepiasis were the most frequent diseases among rodent populations . A... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"and",
"health",
"sciences",
"plagues",
"atmospheric",
"science",
"geographical",
"locations",
"tropical",
"diseases",
"vertebrates",
"parasitic",
"diseases",
"animals",
"mammals",
"bacterial",
"diseases",
"review",
"neglected",
"tropical",
"diseases",
"infect... | 2018 | Rodent-borne diseases and their public health importance in Iran |
Shigella is the leading cause for dysentery worldwide . Together with several virulence factors employed for invasion , the presence and length of the O antigen ( OAg ) of the lipopolysaccharide ( LPS ) plays a key role in pathogenesis . S . flexneri 2a has a bimodal OAg chain length distribution regulated in a growth-... | Shigellosis is a major global health concern . Recently , a shift in the dominance of types of Shigella that cause disease has been observed with S . sonnei increasing in prevalence under improved socio-economic conditions leading to a replacement of S . flexneri . Most of the knowledge of Shigella disease mechanisms h... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | An O Antigen Capsule Modulates Bacterial Pathogenesis in Shigella sonnei |
Many toxin-antitoxin operons are regulated by the toxin/antitoxin ratio by mechanisms collectively coined “conditional cooperativity” . Toxin and antitoxin form heteromers with different stoichiometric ratios , and the complex with the intermediate ratio works best as a transcription repressor . This allows transcripti... | The effectiveness of antibiotics on many pathogenic bacteria is compromised by multidrug tolerance . This is caused by a small sub-population of bacteria that happen to be in a dormant , non-dividing state when antibiotics are applied and thus are protected from being killed . These bacteria are called persisters . Unr... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2013 | Conditional Cooperativity of Toxin - Antitoxin Regulation Can Mediate Bistability between Growth and Dormancy |
The ability of microbial species to consume compounds found in the environment to generate commercially-valuable products has long been exploited by humanity . The untapped , staggering diversity of microbial organisms offers a wealth of potential resources for tackling medical , environmental , and energy challenges .... | The ability of microbial species to consume compounds found in the environment to generate commercially-valuable products has long been exploited by humanity . The vast untapped diversity of microbial species offers a wealth of potential resources . However , little is known about most microbial species . While the met... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"biotechnology",
"bioengineering",
"systems",
"biology",
"biological",
"systems",
"engineering",
"biology",
"computational",
"biology",
"metabolic",
"networks",
"genetics",
"and",
"genomics",
"engineering"
] | 2012 | Phenomenological Model for Predicting the Catabolic Potential of an Arbitrary Nutrient |
Cervical cancer is one of the leading causes of cancer death in women worldwide . The causative agents of cervical cancers , high-risk human papillomaviruses ( HPVs ) , cause cancer through the action of two oncoproteins , E6 and E7 . The E6 oncoprotein cooperates with an E3 ubiquitin ligase ( UBE3A ) to target the p53... | Human papillomaviruses ( HPV ) are the causative agents of cervical cancer , one of the leading causes of cancer death in women worldwide . The E6 oncoprotein encoded by HPV has been implicated in the progression of primary tumors to metastatic disease and we have developed a new model in the fruit fly ( Drosophila mel... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"invertebrates",
"cell",
"death",
"medicine",
"and",
"health",
"sciences",
"diabetic",
"endocrinology",
"cell",
"processes",
"animals",
"hormones",
"endocrine",
"physiology",
"animal",
"models",
"oncology",
"developmental",
"biology",
"drosophila",
"melanogaster",
"model"... | 2016 | A Drosophila Model of HPV E6-Induced Malignancy Reveals Essential Roles for Magi and the Insulin Receptor |
Endosymbiosis has driven major molecular and cellular innovations . Plasmodium spp . parasites that cause malaria contain an essential , non-photosynthetic plastid—the apicoplast—which originated from a secondary ( eukaryote–eukaryote ) endosymbiosis . To discover organellar pathways with evolutionary and biomedical si... | Plasmodium parasites , which cause malaria , and related apicomplexan parasites evolved from photosynthetic algae that acquired their chloroplast through two successive endosymbioses . Although no longer photosynthetic , the apicomplexan plastid—or apicoplast—was retained in these pathogens and provides critical metabo... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"parasite",
"groups",
"parasite",
"replication",
"plasmodium",
"green",
"fluorescent",
"protein",
"cloning",
"parasitic",
"protozoans",
"parasitology",
"apicomplexa",
"luminescent",
"proteins",
"protozoans",
"molecular",
"biology",
"techniques",
"research",
"and",
"analysis... | 2019 | A mutagenesis screen for essential plastid biogenesis genes in human malaria parasites |
Optimal Bayesian models have been highly successful in describing human performance on perceptual decision-making tasks , such as cue combination and visual search . However , recent studies have argued that these models are often overly flexible and therefore lack explanatory power . Moreover , there are indications t... | The main task of perceptual systems is to make truthful inferences about the environment . The sensory input to these systems is often astonishingly imprecise , which makes human perception prone to error . Nevertheless , numerous studies have reported that humans often perform as accurately as is possible given these ... | [
"Abstract",
"Introduction",
"Methods",
"Models",
"Results",
"Discussion"
] | [] | 2019 | Imperfect Bayesian inference in visual perception |
Active sensing involves the fusion of internally generated motor events with external sensation . For rodents , active somatosensation includes scanning the immediate environment with the mystacial vibrissae . In doing so , the vibrissae may touch an object at any angle in the whisk cycle . The representation of touch ... | Animals interrogate the world around them with actively moving sensory organs , resulting in a blend of sensory inputs: one input is from the object under study , while the second is from self-generated movement of the sensor . The detection of an object thus depends on the ability of the animal to distinguish among in... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [] | 2015 | Vibrissa Self-Motion and Touch Are Reliably Encoded along the Same Somatosensory Pathway from Brainstem through Thalamus |
Division of labor and task specialization explain the success of human and insect societies . Social insect colonies are characterized by division of labor , with workers specializing in brood care early and foraging later in life . Theory posits that this task switching requires shifts in responsiveness to task-relate... | In social insects such as ants and bees , workers specialize in different tasks . This specialization is thought to be regulated via response thresholds to task-specific cues , which vary between workers conducting different tasks . Whether a worker takes care of the brood , cares for other workers , or leaves the nest... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"methods"
] | [
"invertebrates",
"honey",
"bees",
"sociology",
"social",
"sciences",
"animals",
"social",
"systems",
"animal",
"behavior",
"zoology",
"animal",
"sociality",
"bees",
"foraging",
"lipids",
"hymenoptera",
"ants",
"behavior",
"fats",
"gene",
"expression",
"insects",
"arth... | 2018 | Vitellogenin-like A–associated shifts in social cue responsiveness regulate behavioral task specialization in an ant |
Transmission of zoonotic cutaneous leishmaniasis ( ZCL ) depends on the presence , density and distribution of Leishmania major rodent reservoir and the development of these rodents is known to have a significant dependence on environmental and climate factors . ZCL in Tunisia is one of the most common forms of leishma... | Zoonotic cutaneous leishmaniasis is a human vector-borne disease caused by the parasite Leishmania major and is well spread in rural areas where human resources in public health and infrastructure are limited . The cycle of transmission of the disease is complex because of the impact of climate change . In this study w... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results",
"Discussion"
] | [
"medicine",
"and",
"health",
"sciences",
"atmospheric",
"science",
"geographical",
"locations",
"tropical",
"diseases",
"vertebrates",
"parasitic",
"diseases",
"animals",
"mammals",
"seasons",
"mathematics",
"forecasting",
"statistics",
"(mathematics)",
"neglected",
"tropic... | 2017 | Modeling zoonotic cutaneous leishmaniasis incidence in central Tunisia from 2009-2015: Forecasting models using climate variables as predictors |
Influenza viruses resistant to antiviral drugs emerge frequently . Not surprisingly , the widespread treatment in many countries of patients infected with 2009 pandemic influenza A ( H1N1 ) viruses with the neuraminidase ( NA ) inhibitors oseltamivir and zanamivir has led to the emergence of pandemic strains resistant ... | Although most of the currently circulating 2009 pandemic influenza A ( H1N1 ) viruses are susceptible to neuraminidase ( NA ) inhibitors ( oseltamivir and zanamivir ) , oseltamivir-resistant mutants have sporadically appeared . Yet , the pathogenicity and transmissibility of these oseltamivir-resistant 2009 H1N1 pandem... | [
"Abstract",
"Introduction",
"Results/Discussion",
"Materials",
"and",
"Methods"
] | [
"virology/mechanisms",
"of",
"resistance",
"and",
"susceptibility,",
"including",
"host",
"genetics",
"virology/new",
"therapies,",
"including",
"antivirals",
"and",
"immunotherapy",
"virology/animal",
"models",
"of",
"infection",
"virology/antivirals,",
"including",
"modes",... | 2010 | Characterization of Oseltamivir-Resistant 2009 H1N1 Pandemic Influenza A Viruses |
Heterosis has been widely used in agriculture , but the molecular mechanism for this remains largely elusive . In Arabidopsis hybrids and allopolyploids , increased photosynthetic and metabolic activities are linked to altered expression of circadian clock regulators , including CIRCADIAN CLOCK ASSOCIATED1 ( CCA1 ) . I... | All corn in the USA is grown as hybrids , which grow more vigorously and produce higher yield than their parents , a phenomenon known as heterosis . The molecular basis for heterosis remains elusive . Heterosis is predicted to arise from allelic interactions between parental genomes , leading to altered regulatory netw... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biotechnology",
"plant",
"anatomy",
"chemical",
"compounds",
"brassica",
"carbohydrates",
"organic",
"compounds",
"cereal",
"crops",
"plant",
"science",
"model",
"organisms",
"crops",
"plant",
"genomics",
"chronobiology",
"plants",
"starches",
"arabidopsis",
"thaliana",
... | 2016 | Temporal Shift of Circadian-Mediated Gene Expression and Carbon Fixation Contributes to Biomass Heterosis in Maize Hybrids |
Folding of the chromosomal fibre in interphase nuclei is an important element in the regulation of gene expression . For instance , physical contacts between promoters and enhancers are a key element in cell-type–specific transcription . We know remarkably little about the principles that control chromosome folding . H... | Folding of chromosomes in interphase nuclei of higher eukaryotes is a key element in regulating gene expression . The mechanisms that control chromatin folding are largely unknown . We have shown earlier that looping is a fundamental aspect of large-scale chromatin structure . Two abundant looping proteins are known: C... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"systems",
"biology",
"imaging",
"techniques",
"cell",
"biology",
"computational",
"techniques",
"microscopy",
"mathematical",
"and",
"statistical",
"techniques",
"biology",
"and",
"life",
"sciences",
"computational",
"biology",
"biophysics",
"research",
"and",
"analysis"... | 2014 | Depletion of the Chromatin Looping Proteins CTCF and Cohesin Causes Chromatin Compaction: Insight into Chromatin Folding by Polymer Modelling |
Drosophila melanogaster larvae irradiated with doses of ionizing radiation ( IR ) that kill about half of the cells in larval imaginal discs still develop into viable adults . How surviving cells compensate for IR-induced cell death to produce organs of normal size and appearance remains an active area of investigation... | Like other insects , Drosophila larvae have epithelial structures called imaginal discs that will give rise to most of the external adult structures , such as wings , limbs , or antennae; these organ precursors are formed by a single layer of epithelial cells that folds into a sac . Imaginal discs manage to regenerate ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"cell",
"death",
"invertebrates",
"cell",
"processes",
"animals",
"animal",
"models",
"developmental",
"biology",
"drosophila",
"melanogaster",
"model",
"organisms",
"organism",
"development",
"stat",
"proteins",
"embryos",
"morphogenesis",
"drosophila",
"research",
"and"... | 2016 | Drosophila Wnt and STAT Define Apoptosis-Resistant Epithelial Cells for Tissue Regeneration after Irradiation |
Receptors of the signalling lymphocyte-activation molecules ( SLAM ) family are involved in the functional regulation of a variety of immune cells upon engagement through homotypic or heterotypic interactions amongst them . Here we show that murine cytomegalovirus ( MCMV ) dampens the surface expression of several SLAM... | Cytomegalovirus ( CMV ) has developed diverse tactics to elude the host immune response and guarantee its survival . The signalling lymphocyte-activation molecules ( SLAM ) family of receptors encompasses a number of adhesion molecules expressed on the surface of leukocytes that play critical roles in both innate and a... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"viral",
"immune",
"evasion",
"virology",
"immunology",
"host-pathogen",
"interaction",
"biology",
"microbiology",
"immunomodulation"
] | 2014 | Cytomegalovirus m154 Hinders CD48 Cell-Surface Expression and Promotes Viral Escape from Host Natural Killer Cell Control |
Dysregulation of iron metabolism in cancer is well documented and it has been suggested that there is interdependence between excess iron and increased cancer incidence and progression . In an effort to better understand the linkages between iron metabolism and breast cancer , a predictive mathematical model of an expa... | Iron is required for cellular metabolism and growth , but can be toxic due to its ability to cause high oxidative stress and consequently DNA damage . To prevent damage , all organisms that require iron have developed mechanisms to tightly control iron levels . Dysregulation of iron metabolism is detrimental and can co... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"heme",
"medicine",
"and",
"health",
"sciences",
"breast",
"tumors",
"oxidative",
"stress",
"cancers",
"and",
"neoplasms",
"oncology",
"physiological",
"processes",
"mathematics",
"homeostasis",
"algebra",
"mitochondria",
"bioenergetics",
"cellular",
"structures",
"and",
... | 2017 | Activated Oncogenic Pathway Modifies Iron Network in Breast Epithelial Cells: A Dynamic Modeling Perspective |
Schistosomiasis is a chronic neglected tropical disease that is characterized by continued inflammatory challenges to the exposed population and it has been established as a possible risk factor in the aetiology of bladder cancer . Improved diagnosis of schistosomiasis and its associated pathology is possible through m... | Schistosomiasis , caused by S . haematobium , causes inflammation in the bladder and is common in tropical areas such as Nigeria . Undetected schistosomiasis can lead to inflammation in the bladder which may lead to bladder cancer . Diagnosis of bladder cancer in areas with common urinary schistosomiasis is difficult b... | [
"Abstract",
"Introduction",
"Materials",
"and",
"methods",
"Results",
"Discussion"
] | [
"schistosoma",
"invertebrates",
"medicine",
"and",
"health",
"sciences",
"body",
"fluids",
"helminths",
"tropical",
"diseases",
"dna-binding",
"proteins",
"biomarkers",
"parasitic",
"diseases",
"animals",
"urine",
"membrane",
"receptor",
"signaling",
"neglected",
"tropica... | 2017 | Quantitative label-free proteomic analysis of human urine to identify novel candidate protein biomarkers for schistosomiasis |
Adaptation in eukaryotes is generally assumed to be mutation-limited because of small effective population sizes . This view is difficult to reconcile , however , with the observation that adaptation to anthropogenic changes , such as the introduction of pesticides , can occur very rapidly . Here we investigate adaptat... | Adaptation in eukaryotes is often assumed to be limited by the waiting time for adaptive mutations . This is because effective population sizes are relatively small , typically on the order of only a few million reproducing individuals or less . It should therefore take hundreds or even thousands of generations until a... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"evolutionary",
"biology",
"genetics",
"and",
"genomics/population",
"genetics"
] | 2010 | Evidence that Adaptation in Drosophila Is Not Limited by Mutation at Single Sites |
Energy parasitism by ATP/ADP transport proteins is an essential , common feature of intracellular bacteria such as chlamydiae and rickettsiae , which are major pathogens of humans . Although several ATP/ADP transport proteins have so far been characterized , some fundamental questions regarding their function remained ... | Diverse members of the bacterial order Chlamydiales cause severe diseases in humans . Chlamydiales cannot survive and reproduce outside of host cells , due to the complete loss of several biosynthetic pathways , but rely on specialized transport systems to import the corresponding metabolites from the host . We perform... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods",
"Supporting",
"Information"
] | [
"biochemistry",
"infectious",
"diseases",
"microbiology",
"eubacteria"
] | 2007 | Enlightening Energy Parasitism by Analysis of an ATP/ADP Transporter from Chlamydiae |
Botulism , characterized by flaccid paralysis , commonly results from botulinum neurotoxin ( BoNT ) absorption across the epithelial barrier from the digestive tract and then dissemination through the blood circulation to target autonomic and motor nerve terminals . The trafficking pathway of BoNT/A passage through the... | Botulism is a severe and often fatal disease in man and animals characterized by flaccid paralysis . Clostridium botulinum produces a potent neurotoxin ( botulinum neurotoxin ) responsible for all the symptoms of botulism . Botulism is most often acquired by ingesting preformed botulinum neurotoxin in contaminated food... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"medicine",
"biology",
"microbiology",
"molecular",
"cell",
"biology",
"toxicology"
] | 2012 | Preferential Entry of Botulinum Neurotoxin A Hc Domain through Intestinal Crypt Cells and Targeting to Cholinergic Neurons of the Mouse Intestine |
To understand the brain mechanisms of olfaction we must understand the rules that govern the link between odorant structure and odorant perception . Natural odors are in fact mixtures made of many molecules , and there is currently no method to look at the molecular structure of such odorant-mixtures and predict their ... | One hundred years ago , Alexander Graham Bell asked: “Can you measure the difference between one kind of smell and another ? It is very obvious that we have very many different kinds of smells , all the way from the odor of violets and roses up to asafetida . But until you can measure their likenesses and differences y... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [] | 2013 | Predicting Odor Perceptual Similarity from Odor Structure |
Both Schistosoma mansoni and Schistosoma haematobium cause schistosomiasis in sub-Saharan Africa . We assessed the diagnostic value of selected Schistosoma antigens for the development of a multiplex serological immunoassay for sero-epidemiological surveillance . Diagnostic ability of recombinant antigens from S . mans... | More attention is now shifting towards elimination of some of the neglected tropical diseases , including schistosomiasis . Efficient diagnostics and surveillance tools are the bedrock of planning , implementation , monitoring and evaluation of such disease interventions . We had developed a multiplex immunoassay syste... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | Species-Specific Serological Detection for Schistosomiasis by Serine Protease Inhibitor (SERPIN) in Multiplex Assay |
In order to complete their life cycle , papillomaviruses have evolved to manipulate a plethora of cellular pathways . The products of the human Alphapapillomavirus E6 proteins specifically interact with and target PDZ containing proteins for degradation . This viral phenotype has been suggested to play a role in viral ... | It is thought that the ability to degrade PDZ domain containing proteins is a hallmark of oncogenic papillomaviruses . However , since papillomaviruses did not evolve to be oncogenic , this hypothesis does not address the evolutionary importance of this phenotype . The present manuscript attempts to address whether HPV... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [] | 2015 | Degradation of Human PDZ-Proteins by Human Alphapapillomaviruses Represents an Evolutionary Adaptation to a Novel Cellular Niche |
The development of biomedical interventions to reduce acquisition of HIV-1 infection remains a global priority , however their potential effectiveness is challenged by very high HIV-1 envelope diversity . Two large prophylactic trials in high incidence , clade C epidemic regions in southern Africa are imminent; passive... | Vaccine and passive immunization prophylactic trials that rely on antibody-mediated protection are planned for HIV-1 clade C epidemic regions of southern Africa , which have amongst the highest HIV-1 incidences globally . This includes a phase 2b trial of passively administered monoclonal antibody , VRC01; as well as a... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"sequencing",
"techniques",
"viral",
"vaccines",
"medicine",
"and",
"health",
"sciences",
"immune",
"physiology",
"pathology",
"and",
"laboratory",
"medicine",
"viral",
"transmission",
"and",
"infection",
"pathogens",
"immunology",
"microbiology",
"retroviruses",
"viruses... | 2016 | Features of Recently Transmitted HIV-1 Clade C Viruses that Impact Antibody Recognition: Implications for Active and Passive Immunization |
How non-coding DNA gives rise to new protein-coding genes ( de novo genes ) is not well understood . Recent work has revealed the origins and functions of a few de novo genes , but common principles governing the evolution or biological roles of these genes are unknown . To better define these principles , we performed... | De novo genes are protein-coding genes with no clear homology to previously existing protein-coding genes . Since their discovery in Drosophila and other species including humans , their existence has been controversial , with some doubt as to how they would arise , whether they produce proteins , and whether they coul... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [] | 2013 | De Novo ORFs in Drosophila Are Important to Organismal Fitness and Evolved Rapidly from Previously Non-coding Sequences |
This study was conducted to ( i ) determine the prevalence of African Animal Trypanosomosis ( AAT ) in tsetse challenged areas , ( ii ) compare conventional with qPCR detection systems and ( iii ) evaluate the host genetic background and biology as risk factors . AAT prevalence studies are often confronted with low lev... | African Animal Trypanosomosis ( AAT ) is a neglected tropical disease heavily impacting on the poor . Sensitive diagnostic tools are needed since actual parasitaemia levels can be very low , particularly in chronically infected or trypanotolerant animals . Hence , we present a novel real-time PCR ( qPCR ) assay for the... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"veterinary",
"diseases",
"veterinary",
"epidemiology",
"veterinary",
"parasitology",
"genetics",
"biology",
"evolutionary",
"biology",
"evolutionary",
"genetics",
"veterinary",
"science"
] | 2013 | A Novel qPCR Assay for the Detection of African Animal Trypanosomosis in Trypanotolerant and Trypanosusceptible Cattle Breeds |
Long noncoding RNAs ( lncRNAs ) have emerged as critical factors in many biological processes , but little is known about how their regulatory functions evolved . One of the best-studied lncRNAs is TER , the essential RNA template for telomerase reverse transcriptase . We previously showed that Arabidopsis thaliana har... | Telomerase is a highly regulated enzyme whose activity is essential for long-term cellular proliferation . In the presence of DNA double-strand breaks ( DSBs ) , telomerase activity must be curtailed to promote faithful DNA repair . We previously showed that the flowering plant Arabidopsis thaliana rapidly down-regulat... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | A Transposable Element within the Non-canonical Telomerase RNA of Arabidopsis thaliana Modulates Telomerase in Response to DNA Damage |
Biological protein interactions networks such as signal transduction or gene transcription networks are often treated as modular , allowing motifs to be analyzed in isolation from the rest of the network . Modularity is also a key assumption in synthetic biology , where it is similarly expected that when network motifs... | Cells rely on complex networks of protein-protein interactions in order to carry out life functions . Scientists believe that these networks are organized in a modular fashion; that is they are made up of functionally distinct parts like an electronic circuit . Modularity implies that just as we put together electronic... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"systems",
"biology",
"biochemistry",
"signal",
"transduction",
"biochemical",
"simulations",
"computer",
"and",
"information",
"sciences",
"cell",
"biology",
"theoretical",
"biology",
"network",
"analysis",
"synthetic",
"biology",
"biology",
"and",
"life",
"sciences",
... | 2014 | Loads Bias Genetic and Signaling Switches in Synthetic and Natural Systems |
During the entry process , the human immunodeficiency virus type 1 ( HIV-1 ) envelope glycoprotein ( Env ) trimer undergoes a sequence of conformational changes triggered by both CD4 and coreceptor engagement . Resolving the conformation of these transient entry intermediates has proven challenging . Here , we fine-map... | The trimeric human immunodeficiency virus type 1 ( HIV-1 ) envelope glycoprotein ( Env ) mediates HIV-1 entry into its target cells . Entry is initiated by sequential triggering of Env upon interaction with its primary receptor CD4 and a coreceptor on target cells . The ensuing structural rearrangements of the Env trim... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Material",
"and",
"methods"
] | [
"cell",
"binding",
"flow",
"cytometry",
"cell",
"physiology",
"medicine",
"and",
"health",
"sciences",
"immune",
"physiology",
"pathology",
"and",
"laboratory",
"medicine",
"pathogens",
"immunology",
"microbiology",
"retroviruses",
"viruses",
"immunodeficiency",
"viruses"... | 2019 | CD4 occupancy triggers sequential pre-fusion conformational states of the HIV-1 envelope trimer with relevance for broadly neutralizing antibody activity |
Active DNA demethylation in plants occurs through base excision repair , beginning with removal of methylated cytosine by the ROS1/DME subfamily of 5-methylcytosine DNA glycosylases . Active DNA demethylation in animals requires the DNA glycosylase TDG or MBD4 , which functions after oxidation or deamination of 5-methy... | DNA cytosine methylation ( 5-methylcytosine , 5-meC ) is an important epigenetic mark , and methylation patterns are coordinately controlled by methylation and demethylation reactions during development and reproduction . In plants , REPRESSOR OF SILENCING ( ROS1 ) is one of the well characterized 5-meC DNA glycosylase... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biochemistry",
"developmental",
"biology",
"base",
"excision",
"repair",
"genomic",
"imprinting",
"gene",
"expression",
"genetics",
"biology",
"and",
"life",
"sciences",
"dna",
"dna",
"repair",
"dna",
"modification",
"epigenetics",
"dna",
"methylation"
] | 2015 | An AP Endonuclease Functions in Active DNA Demethylation and Gene Imprinting in Arabidopsis |
The brain's decoding of fast sensory streams is currently impossible to emulate , even approximately , with artificial agents . For example , robust speech recognition is relatively easy for humans but exceptionally difficult for artificial speech recognition systems . In this paper , we propose that recognition can be... | Despite tremendous advances in neuroscience , we cannot yet build machines that recognize the world as effortlessly as we do . One reason might be that there are computational approaches to recognition that have not yet been exploited . Here , we demonstrate that the ability to recognize temporal sequences might play a... | [
"Abstract",
"Introduction",
"Model",
"Results",
"Discussion"
] | [
"neuroscience/theoretical",
"neuroscience",
"neuroscience/sensory",
"systems",
"computational",
"biology/computational",
"neuroscience"
] | 2009 | Recognizing Sequences of Sequences |
We need to find ways of enhancing the potency of existing antibiotics , and , with this in mind , we begin with an unusual question: how low can antibiotic dosages be and yet bacterial clearance still be observed ? Seeking to optimise the simultaneous use of two antibiotics , we use the minimal dose at which clearance ... | So-called “cocktail” treatments are often proposed as a way of enhancing the potency of antibiotics , based on the idea that multiple drugs can synergise when used together as part of a single combined therapy . We investigated whether any other multidrug deployment strategies are as effective as—or perhaps even better... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [] | 2015 | Using a Sequential Regimen to Eliminate Bacteria at Sublethal Antibiotic Dosages |
The common non-steroidal anti-inflammatory drug ibuprofen has been associated with a reduced risk of some age-related pathologies . However , a general pro-longevity role for ibuprofen and its mechanistic basis remains unclear . Here we show that ibuprofen increased the lifespan of Saccharomyces cerevisiae , Caenorhabd... | Aging is the greatest risk factor for many diseases , which together account for the majority of global deaths and healthcare costs . Here we show that the common drug ibuprofen increases the lifespan of yeast , worms and flies , indicative of conserved longevity effects . In budding yeast , an excellent model of cellu... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"cell",
"physiology",
"biochemistry",
"cell",
"biology",
"fungal",
"genetics",
"genetics",
"microbial",
"genetics",
"biology",
"and",
"life",
"sciences",
"molecular",
"genetics",
"molecular",
"cell",
"biology"
] | 2014 | Enhanced Longevity by Ibuprofen, Conserved in Multiple Species, Occurs in Yeast through Inhibition of Tryptophan Import |
Snakebite envenomation is a neglected condition that constitutes a public health problem in tropical and subtropical countries , including Brazil . Interestingly , some animals are resistant to snake envenomation due to the presence of inhibitory glycoproteins in their serum that target toxic venom components . DM64 is... | Snakebite envenomation causes medical emergencies that , depending on the species responsible for the bite , involve different organs and tissues . Envenomation by snakebite is a worldwide problem , and Brazil presents a high incidence of Bothrops bites . Bothrops venoms cause pathological alterations with prominent lo... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"and",
"health",
"sciences",
"toxins",
"pathology",
"and",
"laboratory",
"medicine",
"molecular",
"mass",
"pichia",
"pastoris",
"tropical",
"diseases",
"vertebrates",
"silver",
"staining",
"animals",
"toxicology",
"toxic",
"agents",
"fungi",
"reptiles",
"n... | 2017 | Heterologous expression of the antimyotoxic protein DM64 in Pichia pastoris |
Two Kato-Katz thick smears ( Kato-Katzs ) from a single stool are currently recommended for diagnosing Schistosoma mansoni infections to map areas for intervention . This ‘gold standard’ has low sensitivity at low infection intensities . The urine point-of-care circulating cathodic antigen test ( POC-CCA ) is potential... | Schistosomiasis is a parasitic disease infecting over 200 million people . It remains a major public health concern despite treatment of over 120 million people in sub-Saharan Africa alone . Accurate diagnostic methods are essential for monitoring drug efficacy and long-term control program success . The World Health O... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"helminth",
"infections",
"schistosomiasis",
"plant",
"science",
"medicine",
"and",
"health",
"sciences",
"diagnostic",
"medicine",
"epidemiology",
"disease",
"surveillance",
"plant",
"pathology",
"biology",
"and",
"life",
"sciences",
"tropical",
"diseases",
"neglected",
... | 2014 | Sensitivity and Specificity of Multiple Kato-Katz Thick Smears and a Circulating Cathodic Antigen Test for Schistosoma mansoni Diagnosis Pre- and Post-repeated-Praziquantel Treatment |
Genome-scale metabolic models provide a powerful means to harness information from genomes to deepen biological insights . With exponentially increasing sequencing capacity , there is an enormous need for automated reconstruction techniques that can provide more accurate models in a short time frame . Current methods f... | Genome-scale metabolic modeling is a powerful approach that allows one to computationally simulate a variety of metabolic phenotypes . However , manually constructing accurate metabolic networks is extremely time intensive and it is thus desirable to have automated computational methods for providing high-quality metab... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [
"systems",
"biology",
"computer",
"and",
"information",
"sciences",
"network",
"analysis",
"biology",
"and",
"life",
"sciences",
"metabolic",
"networks",
"computerized",
"simulations"
] | 2014 | Likelihood-Based Gene Annotations for Gap Filling and Quality Assessment in Genome-Scale Metabolic Models |
Ebola virus ( EBOV ) infections are characterized by deficient T-lymphocyte responses , T-lymphocyte apoptosis and lymphopenia . We previously showed that disabling of interferon-inhibiting domains ( IIDs ) in the VP24 and VP35 proteins effectively unblocks maturation of dendritic cells ( DCs ) and increases the secret... | The extensive investigation of interferon antagonism mediated by Ebola virus ( EBOV ) over the last 16 years resulted in identification of two interferon inhibiting domains ( IIDs ) located in the VP24 and VP35 proteins of the virus and of multiple mechanisms by which the domains disable the innate immune system and pr... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"blood",
"cells",
"phosphorylation",
"flow",
"cytometry",
"innate",
"immune",
"system",
"medicine",
"and",
"health",
"sciences",
"immune",
"cells",
"immune",
"physiology",
"cytokines",
"immunology",
"cloning",
"developmental",
"biology",
"molecular",
"development",
"mol... | 2016 | The Ebola Interferon Inhibiting Domains Attenuate and Dysregulate Cell-Mediated Immune Responses |
The mechanosensitive channel of large conductance ( MscL ) has become a model system in which to understand mechanosensation , a process involved in osmoregulation and many other physiological functions . While a high resolution closed state structure is available , details of the open structure and the gating mechanis... | Cells in biological organisms have to be able to respond to mechanical forces during processes such as touch , hearing , pain sensation and tissue growth . One way this is achieved is through mechanosensitive ion channels , membrane embedded proteins that initiate electrical signalling upon tension within the cell or c... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"signal",
"transduction",
"molecular",
"cell",
"biology",
"membrane",
"receptor",
"signaling",
"biology",
"biophysics",
"simulations",
"biophysics"
] | 2012 | Structural Investigation of MscL Gating Using Experimental Data and Coarse Grained MD Simulations |
Plesiosaurians are an extinct group of highly derived Mesozoic marine reptiles with a global distribution that spans 135 million years from the Early Jurassic to the Late Cretaceous . During their long evolutionary history they maintained a unique body plan with two pairs of large wing-like flippers , but their locomot... | Plesiosaurs are an extinct group of Mesozoic marine reptiles with a global distribution that spans 135 million years . They maintained a unique body plan with two pairs of large wing-like flippers throughout their long evolutionary history , but how plesiosaurs swam has remained a topic of debate for almost 200 years .... | [
"Abstract",
"Introduction",
"Results/Discussion",
"Methods"
] | [] | 2015 | Computer Simulations Imply Forelimb-Dominated Underwater Flight in Plesiosaurs |
The APOBEC3 proteins form a multigene family of cytidine deaminases with inhibitory activity against viruses and retrotransposons . In contrast to APOBEC3G ( A3G ) , APOBEC3A ( A3A ) has no effect on lentiviruses but dramatically inhibits replication of the parvovirus adeno-associated virus ( AAV ) . To study the contr... | The APOBEC3 proteins constitute a family of seven cytidine deaminases . Cytidine deaminases are editing enzymes able to remove the amine group from cytidine in single-strand DNA ( ssDNA ) and RNA , converting it to uracil . APOBEC3 proteins have potent antiviral activity against retroviruses , retrotransposons , and DN... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"biochemistry/replication",
"and",
"repair",
"molecular",
"biology",
"immunology/immunity",
"to",
"infections",
"virology/host",
"antiviral",
"responses"
] | 2009 | Deaminase-Independent Inhibition of Parvoviruses by the APOBEC3A Cytidine Deaminase |
Chronic helminth infections typically induce an immunoregulatory environment , with markedly reduced immune responses to both parasite-specific and unrelated bystander antigens . Here we tested whether these changes are also observed in human infections with Mansonella ozzardi , a neglected filarial nematode widely dis... | Helminth infections downregulate immunity and reduce host’s inflammatory responses , but the filarial nematode Mansonella ozzardi , which is widely distributed across Latin America , appears to represent an exception to this rule . We found similar lymphoproliferative responses to filarial and unrelated antigens and co... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"blood",
"cells",
"innate",
"immune",
"system",
"medicine",
"and",
"health",
"sciences",
"glycosylamines",
"immune",
"cells",
"immune",
"physiology",
"cytokines",
"immunology",
"parasitic",
"diseases",
"nematode",
"infections",
"developmental",
"biology",
"molecular",
"... | 2018 | CD39 and immune regulation in a chronic helminth infection: The puzzling case of Mansonella ozzardi |
A role for natural selection in reinforcing premating barriers is recognized , but selection for reinforcement of postmating barriers remains controversial . Organisms lacking evolvable premating barriers can theoretically reinforce postmating isolation , but only under restrictive conditions: parental investment in hy... | Although Darwin believed that natural selection could not drive intersterility between species , it is now well established that there is a role for natural selection in the evolution of premating discrimination that reinforces barriers to hybridization . However , natural selection for postmating barriers , like hybri... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"mycology",
"fungi",
"adaptation",
"natural",
"selection",
"speciation",
"biology",
"evolutionary",
"biology",
"hybridization",
"microbiology",
"evolutionary",
"processes"
] | 2011 | Genetic Architecture of a Reinforced, Postmating, Reproductive Isolation Barrier between Neurospora Species Indicates Evolution via Natural Selection |
The Saccharomyces cerevisiae Dun1 protein kinase is a downstream target of the conserved Mec1-Rad53 checkpoint pathway . Dun1 regulates dNTP pools during an unperturbed cell cycle and after DNA damage by modulating the activity of ribonucleotide reductase ( RNR ) by multiple mechanisms , including phosphorylation of RN... | Dun1 is a non-essential protein kinase important for the maintenance of genome stability in budding yeast . Earlier studies found that simultaneous deletion of DUN1 and IXR1 results in lethality , but the reason for this so-called synthetic lethality is not clear . Ixr1 is implicated in DNA repair based on its ability ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"molecular",
"cell",
"biology",
"dna",
"replication",
"nucleic",
"acids",
"genetics",
"molecular",
"genetics",
"biology",
"dna",
"dna",
"repair",
"nucleotides",
"molecular",
"biology",
"genetics",
"and",
"genomics",
"gene",
"function"
] | 2011 | Ixr1 Is Required for the Expression of the Ribonucleotide Reductase Rnr1 and Maintenance of dNTP Pools |
In Trypanosoma brucei , glycosylphosphatidylinositol phospholipase C ( GPI-PLC ) is a virulence factor that releases variant surface glycoprotein ( VSG ) from dying cells . In live cells , GPI-PLC is localised to the plasma membrane where it is concentrated on the flagellar membrane , so activity or access must be tigh... | African trypanosomes are unicellular parasites with a single flagellum that maintain a persistent infection through antigenic variation based on changes in a densely packed cell surface coat of variant surface glycoprotein ( VSG ) . The cells also contain an enzyme , GPI-PLC , able to shed the VSG from the cell surface... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"molecular",
"cell",
"biology",
"membranes",
"and",
"sorting",
"biology"
] | 2013 | Determinants of GPI-PLC Localisation to the Flagellum and Access to GPI-Anchored Substrates in Trypanosomes |
In recent years , there has been a growing interest in teichoic acids as targets for antibiotic drug design against major clinical pathogens such as Staphylococcus aureus , reflecting the disquieting increase in antibiotic resistance and the historical success of bacterial cell wall components as drug targets . It is n... | Historically , β-lactam class antibiotics such as methicillin have been very successful in the treatment of bacterial infections , effectively destroying bacteria by rupturing their cell walls while posing little harm to the human organism . In recent years , however , the alarming emergence of Methicillin Resistant S ... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"medicine",
"and",
"health",
"sciences",
"crystal",
"structure",
"pathology",
"and",
"laboratory",
"medicine",
"enzymes",
"pathogens",
"condensed",
"matter",
"physics",
"microbiology",
"enzymology",
"staphylococcus",
"aureus",
"petroleum",
"products",
"methicillin-resistant... | 2016 | Structure and Mechanism of Staphylococcus aureus TarS, the Wall Teichoic Acid β-glycosyltransferase Involved in Methicillin Resistance |
Cholera burden in Africa remains unknown , often because of weak national surveillance systems . We analyzed data from the African Cholera Surveillance Network ( www . africhol . org ) . During June 2011–December 2013 , we conducted enhanced surveillance in seven zones and four outbreak sites in Togo , the Democratic R... | Cholera burden in Africa remains unknown , often because of weak national surveillance systems . Reporting is non-exhaustive for various reasons , such as individual and community fears of stigmatization and economic loss . Furthermore , only 3% to 5% of all cases are laboratory confirmed . A variety of case definition... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"guinea",
"medicine",
"and",
"health",
"sciences",
"ecology",
"and",
"environmental",
"sciences",
"tropical",
"diseases",
"geographical",
"locations",
"uganda",
"bacterial",
"diseases",
"aquatic",
"environments",
"bodies",
"of",
"water",
"neglected",
"tropical",
"diseas... | 2016 | Cholera Incidence and Mortality in Sub-Saharan African Sites during Multi-country Surveillance |
Regulated degradation of proteins by the 26S proteasome plays important roles in maintenance and signalling in eukaryotic cells . Proteins are marked for degradation by the action of E3 ligases that site-specifically modify their substrates by adding chains of ubiquitin . Innate immune signalling in plants is deeply re... | Plants are continuously exposed to different disease agents , including bacteria , fungi , oomycetes and chewing or sucking insects . To protect themselves plants have evolved a sophisticated multi-layered immune system that depends on the reprogramming of large gene repertoires to prioritize the expression of immune g... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"methods"
] | [
"medicine",
"and",
"health",
"sciences",
"pathology",
"and",
"laboratory",
"medicine",
"enzymes",
"pathogens",
"immunology",
"enzymology",
"plant",
"physiology",
"ubiquitin",
"ligases",
"plant",
"science",
"plant",
"pathology",
"ligases",
"proteins",
"gene",
"expression... | 2018 | Proteasome-associated HECT-type ubiquitin ligase activity is required for plant immunity |
The first decade of Genome Wide Association Studies ( GWAS ) has uncovered a wealth of disease-associated variants . Two important derivations will be the translation of this information into a multiscale understanding of pathogenic variants and leveraging existing data to increase the power of existing and future stud... | For complex human diseases , identifying the genes harboring susceptibility variants has taken on medical importance . Disease-associated genes provide clues for elucidating disease etiology , predicting disease risk , and highlighting therapeutic targets . Here , we develop a method to predict whether a given gene and... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Methods"
] | [] | 2015 | Heterogeneous Network Edge Prediction: A Data Integration Approach to Prioritize Disease-Associated Genes |
Drosophila harbor substantial genetic variation for antibacterial defense , and investment in immunity is thought to involve a costly trade-off with life history traits , including development , life span , and reproduction . To understand the way in which insects invest in fighting bacterial infection , we selected fo... | The fruit fly is commonly used as a model organism to understand the mechanistic nature of the immune response to bacterial pathogens . The fly is also commonly used to understand what immunity costs hosts in terms of other traits such as life span and reproductive success . Here , we examine these two questions togeth... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"evolutionary",
"biology",
"microbiology/innate",
"immunity"
] | 2009 | Effective but Costly, Evolved Mechanisms of Defense against a Virulent Opportunistic Pathogen in Drosophila melanogaster |
Brain connectivity studies have revealed that highly connected ‘hub’ regions are particularly vulnerable to Alzheimer pathology: they show marked amyloid-β deposition at an early stage . Recently , excessive local neuronal activity has been shown to increase amyloid deposition . In this study we use a computational mod... | An intriguing recent observation is that deposition of the amyloid-β protein , one of the hallmarks of Alzheimer's disease , mainly occurs in brain regions that are highly connected to other regions . To test the hypothesis that these ‘hub’ regions are more vulnerable due to a higher neuronal activity level , we examin... | [
"Abstract",
"Introduction",
"Results",
"Discussion",
"Materials",
"and",
"Methods"
] | [
"medicine",
"neurobiology",
"of",
"disease",
"and",
"regeneration",
"neural",
"networks",
"neuroscience",
"mathematics",
"computational",
"neuroscience",
"alzheimer",
"disease",
"biology",
"dementia",
"nonlinear",
"dynamics",
"central",
"nervous",
"system",
"neurological",
... | 2012 | Activity Dependent Degeneration Explains Hub Vulnerability in Alzheimer's Disease |
Brain metastases are prevalent in various types of cancer and are often terminal , given the low efficacy of available therapies . Therefore , preventing them is of utmost clinical relevance , and prophylactic treatments are perhaps the most efficient strategy . Here , we show that systemic prophylactic administration ... | Brain metastases are prevalent and often terminal . Thus , reducing their occurrence could markedly improve cancer outcome . We show that systemic prophylactic and perioperative administration of a TLR9 agonist , CpG-C , reduced metastatic growth in experimental and spontaneous brain metastasis models , employing mouse... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [] | 2019 | Prophylactic TLR9 stimulation reduces brain metastasis through microglia activation |
West Nile Virus ( WNV ) is now endemic throughout North America , with annual recurrence dependent upon successful overwintering when cold temperatures drive mosquito vectors into inactivity and halt transmission . To investigate whether avian hosts may serve as an overwintering mechanism , groups of eight to ten House... | House Sparrows experimentally infected with West Nile virus [WNV] were necropsied at multiple time points from 3 to 18 weeks post infection ( pi ) . The percent of birds with tissues positive for WNV RNA decreased from 100% at 3 wks to 13% at 18 wks pi; infectious virus was recovered from some birds by tissue co-cultiv... | [
"Abstract",
"Introduction",
"Materials",
"and",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"infectious",
"diseases",
"west",
"nile",
"fever",
"viral",
"diseases"
] | 2012 | Dynamics of West Nile Virus Persistence in House Sparrows (Passer domesticus) |
Schistosomiasis remains a significant health burden in many areas of the world . Morbidity control , focused on limiting infection intensity through periodic delivery of anti-schistosomal medicines , is the thrust of current World Health Organization guidelines ( 2006 ) for reduction of Schistosoma-related disease . A ... | Debate persists about how best to prevent disease caused by Schistosoma parasites . Current guidelines focus on suppressing morbidity by limiting average intensity of infection during childhood . However , this may not be sufficient to cure infection or prevent reinfection , leaving risk for sub-clinical morbidities su... | [
"Abstract",
"Introduction",
"Methods",
"Results",
"Discussion"
] | [
"medicine",
"public",
"health",
"and",
"epidemiology",
"science",
"policy",
"and",
"economics",
"applied",
"mathematics",
"parasitic",
"diseases",
"preventive",
"medicine",
"mathematics",
"cost-benefit",
"analysis",
"neglected",
"tropical",
"diseases",
"urologic",
"infect... | 2012 | Projecting the Long-Term Impact of School- or Community-Based Mass-Treatment Interventions for Control of Schistosoma Infection |
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