Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Helicobacteraceae, Genus Helicobacter,
Helicobacter marmotae Fox et al. 2006.
Gram-negative, slender and curved rods (1-3 spirals), 0.2 x 1.5-5 μm. Nonsporulated.
Motile by a sheathed, single unipolar or bipolar ﬂagella.
On solid agar media culture appears as spreading layers. Microaerophilic; no aerobic
or anaerobic growth. Grow at 37 and 42 ºC. Grow on media supplemented with 1%
Isolated from the liver of woodchucks (Marmota monax) and feces of clinically normal cats. Resistant to nalidixic acid and cephalothin
It might play a role in potentiating hepatic inﬂammation or neoplasia in woodchucks infected with woodchuck hepatitis virus (WHV).
- James G. Fox, Zeli Shen, Shilu Xu, Yan Feng, Charles A. Dangler, Floyd E. Dewhirst, Bruce J. Paster, and John M. Cullen.
Helicobacter marmotae sp. nov. Isolated from Livers of Woodchucks and Intestines of Cats. J. Clin. Microbiol. July 2002 40:7
Positive results for alkaline phosphatase, catalase, oxidase & urease.
Negative results for indoxyl acetate hydrolysis, gamma-glutamyl transpeptidase,
nitrate reduction to nitrite.
(c) Costin Stoica