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Eikenella corrodens

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A gram-negative facultative anaerobe and pleomorphic bacillus that inhabits in human oral cavity involved in periodontal pathogen.


Eikenella corrodens is typically formed a depression on agar medium that both needs atmosphere enhanced by 10% carbon dioxide which shows small greenish colonies that is capable of corroding agar plate culture with faintly smell of bleach. It is catalase, urease and indole negative while it is oxidase positive which able to reduce nitrate to nitrite.

Eikenella corrodens is able to generate enzymes during stationary phase which facilitate maturation and detachment of biofilm formation leading to the progression of periodontal disease. It is also isolated in intestinal tract and genital tract.

Eikenella corrodens is a commensal bacterium found in upper respiratory tract and mouth of human which is usually associated to occur in individual with cancer of neck and head as well as in human bite infections. Its infection normally does not show immediately until a week or more after the injury and has an extremely foul smelling.

Scientific classification:

 Kingdom: Bacteria
 Phylum: Proteobacteria
 Class: Beta Proteobacteria
 Order: Neisseriales
 Family: Neisseriaceae
 Genus: Eikenella
 Species: Eikenella corrodens

See also:

• Bacteria

• Periodontal infection

• Pleomorphic