Streptococcus oralis
Streptococcus oralis
Streptococcus oralis (pronunciation: strep-toe-cock-us o-ral-is) is a species of bacteria that is part of the normal flora of the human mouth. It is a member of the Streptococcus genus, which includes several other important human pathogens.
Etymology
The name Streptococcus oralis is derived from the Greek words streptos, meaning twisted, and kokkos, meaning berry. The term oralis is Latin for pertaining to the mouth, reflecting the bacterium's habitat.
Characteristics
Streptococcus oralis is a Gram-positive, coccus-shaped bacterium that typically forms chains or pairs. It is aerobic and facultative anaerobic, meaning it can grow in both the presence and absence of oxygen. It is also catalase-negative and oxidase-negative.
Pathogenicity
While Streptococcus oralis is typically harmless and part of the normal oral flora, it can cause disease under certain conditions. It has been associated with endocarditis, meningitis, and dental abscesses. It can also cause bacteremia when it enters the bloodstream, particularly in individuals with weakened immune systems.
Related Terms
- Streptococcus pneumoniae
- Streptococcus pyogenes
- Streptococcus mutans
- Streptococcus salivarius
- Streptococcus sanguinis
External links
- Medical encyclopedia article on Streptococcus oralis
- Wikipedia's article - Streptococcus oralis
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