Porphyromonas gingivalis
Bacteria|Bacteroidota|Bacteroidia|Bacteroidales|Porphyromonadaceae|Porphyromonas
Synonyms: Bacteroides gingivalis
MCA-BAC-000022
TaxID: 837
| Rank: species
Biology & Ecology
Biology
Gram Statusgram-negative
Oxygen Toleranceobligate anaerobe
Morphologycoccobacillus
Key Traits
- biofilm-forming
Ecology
Primary Nichesoral cavity
Reservoirhuman
Transmission
- oral-gut translocation (oral-to-gut; facilitated by Pg resistance to acidic pH)
Clinical Profile
Pathobiont
yes
no
context dependent
unknown
Clinical Rolesbiofilm former; commensal; primary pathogen
Typical Specimenblood; unknown
Bloom Triggers
dietary change (high-fat Western diet) ·
D00455
proton pump inhibitor (PPI) use
Risk Contextsdiabetic retinopathy patients; non-alcoholic fatty liver disease (NAFLD) patients; periodontitis patients; pregnancy complications; rheumatoid arthritis; type 1 diabetes
AMR Highlights
unknown
Clinical Associations:
No specific clinical associations documented.
Last reviewed: 2026-04-01
Evidence Timeline
Related Taxa
Shared Niche = same body site
Shared Risk = same vulnerable population
ⓘ