Eikenella spp

From Dog
Eikenella spp under electron microscopy[1]

Eikenella spp are a ubiquitous carbohydrate-fermenting Gram-negative anaerobic bacteria which are commonly associated with gingivitis in dogs[2].

Species which are pathogenic include:

  • Eikenella corrodens[3]

These pathogens are often cultured from the oral mucosa of dogs[4], where they are associated with plaque formation and gingivitis.

Eikenella corrodens is a source of lysine decarboxylase, responsible for impairing the gingival epithelial barrier to bacteria[5].

Other dentopathogenic bacteria are also found such as Actinobacillus spp and Porphyromonas spp.


  1. Science Photo Library
  2. Allaker RP et al (1997) Dental plaque flora of the dog with reference to fastidious and anaerobic bacteria associated with bites. J Vet Dent 14(4):127-130
  3. Kato Y et al (2011) Molecular detection of human periodontal pathogens in oral swab specimens from dogs in Japan. J Vet Dent 28(2):84-89
  4. Allaker RP et al (1994) Prevalence of Eikenella corrodens and Actinobacillus actinomycetemcomitans in the dental plaque of dogs. Vet Rec 134(20):519-520
  5. Yamasaki Y et al (2012) Distribution of periodontopathic bacterial species in dogs and their owners. Arch Oral Biol 57(9):1183-1188