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Prevotella intermedia (formerly Bacteroides intermedius) is a gram-negative, obligate anaerobic pathogenic bacterium involved in periodontal infections, including gingivitis and periodontitis, and often found in acute necrotizing ulcerative gingivitis. It is commonly isolated from dental abscesses, where obligate anaerobes predominate.
Prevotella species may be commensal in the vagina, though increased abundance of Prevotella in vaginal mucosa is associated with bacterial vaginosis.A study of 542 Korean women, including identical and fraternal twins, highlighted that the vaginal microbiota's composition is influenced by menopausal status and bacterial vaginosis, with Lactobacillus and Prevotella being the most inheritable ...
Necrotizing periodontal diseases are caused by a mixed bacterial infection that includes anaerobes such as P. intermedia [1] and Fusobacterium as well as spirochetes, such as Treponema. [3] Necrotizing gingivitis may also be associated with diseases in which the immune system is compromised, including HIV/AIDS. [1]
Bacterial infection by Prevotella intermedia, Treponema, Selenomonas, Fusobacterium spp, Spirochetes and compromised host immune response Risk factors HIV / AIDS , malnutrition , psychological stress , sleep deprivation , inadequate oral hygiene , pre-existing gingivitis , history of necrotizing periodontal disease , tobacco and alcohol use ...
The genus Prevotella is known for its role in the human gastrointestinal microbiota. Prevotella species are among the most numerous microbes culturable from the rumen and hind gut of cattle and sheep, where they help the breakdown of protein and carbohydrate foods. They are also present in humans, where they can be opportunistic pathogens.
Prevotella nigrescens is a species of bacterium. [1] 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 ...
Prevotella intermedia; Prevotella nigrescens; Eikenella corrodens; Eubacterium nodatum; Parvimonas micra (formerly Peptostreptococcus micros or Micromonas micros) Streptococcus intermedius; Campylobacter rectus; Capnocytophaga sp. A number of types of fungi, especially Candida spp., also play a smaller but not insignificant role in periodontal ...
Bacteroides species also benefit their host by excluding potential pathogens from colonizing the gut.Some species (B. fragilis, for example) are opportunistic human pathogens, causing infections of the peritoneal cavity, gastrointestinal surgery, and appendicitis via abscess formation, inhibiting phagocytosis, and inactivating beta-lactam antibiotics.