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''Eikenella corrodens'' is a fastidious Gram-negative facultative anaerobic bacillus. It was first identified by M. Eiken in 1958, who called it ''Bacteroides corrodens''. ==Microbiology== ''E. corrodens'' is a pleomorphic bacillus that sometimes appears coccobacillary and typically creates a depression (or "pit") in the agar on which it is growing. Only half produce the pitting of the agar considered characteristic. It grows in aerobic and anaerobic conditions, but requires an atmosphere enhanced by 3–10% carbon dioxide. The colonies are small and greyish, they produce a greenish discoloration of the underlying agar, and smell faintly of bleach (hypochlorite). They are oxidase-positive, catalase-negative, urease-negative, and indole-negative, and reduce nitrate to nitrite. In 2006, Azakami ''et al'' reported that the periodontal pathogen ''E. corrodens'' have ortholog of ''luxS'', the gene required for Quorum sensing (QS) signal molecule AI-2 synthesis and ''E. corrodens'' can produce AI-2 signal for cell to cell communication and AI-2 has a role on biofilm formation by ''E. corrodens''. Karim ''et al'' reported that this bacteria can produce AI-2 inactivation enzyme during its stationary phase. Karim ''et al'' also reported that LuxS mediated QS may facilitate the maturation and detachment of biofilm formation in ''E.corrodens'', which can leads to progression of periodontal disease. 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「Eikenella corrodens」の詳細全文を読む スポンサード リンク
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