Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Helicobacteraceae, Genus Helicobacter,
Helicobacter mesocricetorum Simmons et al. 2000.
H. mesocricetorum, H. ganmani, and H. rodentium are closely realated by 16S rRNA
Gram-negative, loosely spiral rods, 0.3-4 x 2-3 μm. Motile by means of single bipolar
Culture on agar media containing 5% sheep blood under microaerobic conditions
results in either pinpoint colonies or a thin spreading film. Grow at 37 ºC. No growth
on media containing 1.0% glycine or 1.5% NaCl. Poor or no growth under anaerobic
Isolated from the feces of asymptomatic Syrian hamsters (Mesocricetus auratus).
Resistant to cephalothin (30 μg) in disk diffusion tests. Susceptible to nalidixic acid (5/6 strains).
- George M. Garrity, Julia A. Bell and Timothy Lilburn, 2001. Family II. Helicobacteraceae. In: Bergey’s Manual of Systematic
Bacteriology, Second edition,Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1168-1195.
- J. H. Simmons, L. K. Riley, C. L. Besch-Williford, and C. L. Franklin. Helicobacter mesocricetorum sp. nov., a Novel Helicobacter
Isolated from the Feces of Syrian Hamsters. J. Clin. Microbiol. May 2000 vol. 38 no. 5 1811-1817.
Positive for catalase, alkaline phosphatase and nitrate reduction (6/7).
Negative results for urease, gamma-glutamyltransferase, H2S production and hippurate hydrolysis.
(c) Costin Stoica