EphAsad commited on
Commit
097a479
·
verified ·
1 Parent(s): 375bee4

Update data/rag/knowledge_base/Bacteroides/thetaiotaomicron.json

Browse files
data/rag/knowledge_base/Bacteroides/thetaiotaomicron.json CHANGED
@@ -1,46 +1,107 @@
1
  {
 
 
2
  "genus": "Bacteroides",
3
  "species": "thetaiotaomicron",
4
- "full_name": "Bacteroides thetaiotaomicron",
5
- "clinical_significance": "A dominant gut commensal with extensive polysaccharide-degrading capacity. A frequent isolate in peritoneal infections, intra-abdominal abscesses, and polymicrobial bacteremia. Less virulent than B. fragilis but clinically significant.",
6
- "phenotype_profile": {
7
- "morphology": "Gram-negative rods; pleomorphic.",
8
- "culture": "Non-pigmented; somewhat more fastidious than B. fragilis; bile resistant.",
9
- "biochemical": [
10
- "Catalase negative",
11
- "Indole positive (common distinguishing trait)",
12
- "ONPG negative",
13
- "Non-motile",
14
- "Bile resistant",
15
- "Strong polysaccharide utilization capabilities"
16
- ]
17
  },
18
- "differentiation": {
19
- "from_close_species": [
20
- "Indole positive differentiates B. thetaiotaomicron from B. fragilis and B. vulgatus.",
21
- "More fastidious growth and smaller colonies than B. fragilis.",
22
- "Associated with extensive glycan metabolism in gut ecology."
 
 
 
 
 
 
23
  ],
24
- "from_other_genera": [
25
- "Indole positivity with bile resistance is uncommon outside Bacteroides.",
26
- "Morphology and SCFA profile differ from Parabacteroides."
27
- ]
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
28
  },
29
- "virulence_factors": [
30
- "Polysaccharide utilization loci (PUL systems)",
31
- "Capsular variability enabling immune evasion",
32
- "SCFA production influencing host metabolism"
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
33
  ],
34
- "confirmation_methods": [
35
- "MALDI-TOF MS",
36
- "Indole positivity",
37
- "16S rRNA sequencing",
38
- "Bile resistance + anaerobic rod morphology"
39
  ],
40
- "treatment_notes": "Susceptibility similar to B. vulgatus. Metronidazole effective. Resistance lower than B. fragilis.",
41
- "notes": "A key model species in microbiome research due to vast carbohydrate-active enzyme repertoire.",
42
- "references": [
43
- "Human microbiome (HMP) literature",
44
- "Bacteroides glycan metabolism research"
 
 
 
 
 
 
45
  ]
46
- }
 
1
  {
2
+ "schema_version": "1.0",
3
+ "level": "species",
4
  "genus": "Bacteroides",
5
  "species": "thetaiotaomicron",
6
+
7
+ "overview": {
8
+ "short": "Bacteroides thetaiotaomicron is an obligately anaerobic Gram-negative rod notable for extensive carbohydrate metabolism.",
9
+ "clinical_context": "Primarily a gut commensal; rarely isolated from clinical infections."
 
 
 
 
 
 
 
 
 
10
  },
11
+
12
+ "expected_fields": {
13
+ "Gram Stain": "Negative",
14
+ "Shape": "Rods",
15
+ "Motility": "Negative",
16
+ "Capsule": "Variable",
17
+ "Spore Formation": "Negative",
18
+ "Haemolysis": "Negative",
19
+ "Haemolysis Type": "None",
20
+ "Media Grown On": [
21
+ "Anaerobic Blood Agar"
22
  ],
23
+ "Colony Morphology": [
24
+ "Grey",
25
+ "Smooth",
26
+ "Convex"
27
+ ],
28
+ "Oxygen Requirement": "Obligate Anaerobe",
29
+ "Growth Temperature": "20//45",
30
+ "Catalase": "Variable",
31
+ "Oxidase": "Negative",
32
+ "Indole": "Positive",
33
+ "Urease": "Negative",
34
+ "Citrate": "Negative",
35
+ "Methyl Red": "Variable",
36
+ "VP": "Negative",
37
+ "H2S": "Negative",
38
+ "DNase": "Negative",
39
+ "ONPG": "Positive",
40
+ "Coagulase": "Negative",
41
+ "Gelatin Hydrolysis": "Negative",
42
+ "Esculin Hydrolysis": "Positive",
43
+ "Nitrate Reduction": "Variable",
44
+ "NaCl Tolerant (>=6%)": "Negative",
45
+ "Lipase Test": "Negative",
46
+ "Lysine Decarboxylase": "Negative",
47
+ "Ornithine Decarboxylase": "Negative",
48
+ "Ornitihine Decarboxylase": "Negative",
49
+ "Arginine dihydrolase": "Negative",
50
+ "Glucose Fermentation": "Positive",
51
+ "Lactose Fermentation": "Negative",
52
+ "Sucrose Fermentation": "Positive",
53
+ "Maltose Fermentation": "Positive",
54
+ "Mannitol Fermentation": "Positive",
55
+ "Sorbitol Fermentation": "Negative",
56
+ "Xylose Fermentation": "Positive",
57
+ "Rhamnose Fermentation": "Negative",
58
+ "Arabinose Fermentation": "Positive",
59
+ "Raffinose Fermentation": "Negative",
60
+ "Trehalose Fermentation": "Positive",
61
+ "Inositol Fermentation": "Negative",
62
+ "Gas Production": "Negative",
63
+ "TSI Pattern": "Unknown",
64
+ "Colony Pattern": "Unknown",
65
+ "Pigment": "None",
66
+ "Motility Type": "None"
67
  },
68
+
69
+ "species_markers": [
70
+ {
71
+ "field": "Indole",
72
+ "value": "Positive",
73
+ "importance": "high",
74
+ "notes": "Key differentiator from B. vulgatus and most non-fragilis species."
75
+ },
76
+ {
77
+ "field": "ONPG",
78
+ "value": "Positive",
79
+ "importance": "medium",
80
+ "notes": "Reflects enhanced carbohydrate metabolism."
81
+ }
82
+ ],
83
+
84
+ "common_confusions": [
85
+ {
86
+ "species": "Bacteroides fragilis",
87
+ "reason": "Shared bile tolerance and esculin hydrolysis."
88
+ }
89
  ],
90
+
91
+ "when_to_question_identification": [
92
+ "Indole negativity suggests B. vulgatus.",
93
+ "Capsule positivity with high virulence suggests B. fragilis."
 
94
  ],
95
+
96
+ "recommended_next_tests": [
97
+ {
98
+ "test": "API 20A",
99
+ "reason": "Supports anaerobe species differentiation.",
100
+ "api_kit": "API 20A"
101
+ },
102
+ {
103
+ "test": "MALDI-TOF MS",
104
+ "reason": "Most reliable method for species-level identification."
105
+ }
106
  ]
107
+ }