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''Prevotella'' is a genus of Gram-negative bacteria. ''Bacteroides melaninogenicus'' has been reclassified and split into ''Prevotella melaninogenica'' and ''Prevotella intermedia''. ''Prevotella'' spp. are members of the oral and vaginal flora, and are recovered from anaerobic infections of the respiratory tract. These infections include aspiration pneumonia, lung abscess, pulmonary empyema, and chronic otitis media and sinusitis. They have been isolated from abscesses and burns in the vicinity of the mouth, bites, paronychia, urinary tract infection, brain abscesses, osteomyelitis, and bacteremia associated with upper respiratory tract infections. ''Prevotella'' spp. predominate in periodontal disease and periodontal abscesses. In a study of gut bacteria of children in Burkina Faso (in Africa), ''Prevotella'' made up 53% of the gut bacteria, but were absent in age-matched European children. Studies also indicate that long-term diet is strongly associated with the gut microbiome composition—those who eat plenty of protein and animal fats typical of Western diet have predominantly ''Bacteroides'' bacteria, while for those who consume more carbohydrates, especially fibre, the ''Prevotella'' species dominate. ''P. copri'' is possibly connected to rheumatoid arthritis. A recent study on ''Prevotella'' derived from humans compared the gene repertoires of its species derived from different body sites of human. It also reported an open pan- genome showing vast diversity of gene pool. == Species == * ''Prevotella albensis'' * ''Prevotella amnii'' * ''Prevotella bergensis'' * ''Prevotella bivia'' * ''Prevotella brevis'' * ''Prevotella bryantii'' * ''Prevotella buccae'' * ''Prevotella buccalis'' * ''Prevotella copri'' * ''Prevotella dentalis'' * ''Prevotella denticola'' * ''Prevotella disiens'' * ''Prevotella histicola'' * ''Prevotella intermedia'' * ''Prevotella maculosa'' * ''Prevotella marshii'' * ''Prevotella melaninogenica'' * ''Prevotella micans'' * ''Prevotella multiformis'' * ''Prevotella nigrescens'' * ''Prevotella oralis'' * ''Prevotella oris'' * ''Prevotella oulorum'' * ''Prevotella pallens'' * ''Prevotella salivae'' * ''Prevotella stercorea'' * ''Prevotella tannerae'' * ''Prevotella timonensis'' * ''Prevotella veroralis'' 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Prevotella」の詳細全文を読む スポンサード リンク
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