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Prevotella nigrescens is a species of bacterium. Prevotella nigrescens has a gram negative gram stain. When P. nigrescens microflora colonize they trigger an over-aggressive response from the immune system and increase the incidence of many diseases and infections. One specific type of bacteria that is part of the normal oral flora but leads to disease when it infects the local tissue. This bacteria has no means of motility and has a Bacilli (rod) shape. Prevotella species are part of the human oral and vaginal flora. They play a role in the pathogenesis of periodontal disease, gingivitis, and extraoral infections such as nasopharyngeal and intra-abdominal infections also some odontogenic infections, and strains are usually carried in families, in so-called intrafamilial carriage. It is also associated with carotid atherosclerosis.
Prevotella albensis, previously known as Bacteroides ruminicola subsp. ruminicola, is a species of bacterium.
Prevotella brevis is a species of bacterium.
Prevotella bryantii, previously known as Bacteroides ruminicola ruminicola subsp. brevis biovar 3, is a species of bacterium.
The BANA test is used to determine the proteolytic activity of certain oral anaerobes that contribute to oral malodor. Some bacteria, e.g. Prophyromona gingivalis, Treponema denticola, and Bacteroides forsythus produce waste products that are quite odiferous, and as a result contribute to bad breath.
References
- ↑ Pike R, McGraw W, Potempa J, Travis J (January 1994). "Lysine- and arginine-specific proteinases from Porphyromonas gingivalis. Isolation, characterization, and evidence for the existence of complexes with hemagglutinins". The Journal of Biological Chemistry. 269 (1): 406–11. PMID 8276827.
- ↑ Curtis MA, Aduse Opoku J, Rangarajan M, Gallagher A, Sterne JA, Reid CR, Evans HE, Samuelsson B (December 2002). "Attenuation of the virulence of Porphyromonas gingivalis by using a specific synthetic Kgp protease inhibitor". Infection and Immunity. 70 (12): 6968–75. doi:10.1128/iai.70.12.6968-6975.2002. PMC 132948 . PMID 12438376.
