Helicobacter mesocricetorum
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
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
gene sequence.
Gram-negative, loosely spiral rods, 0.3-4 x 2-3 μm. Motile by means of single bipolar
unsheathed flagella.
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
conditions.
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).
Undetermined
  1. 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.
  2. 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, H
2S production and hippurate hydrolysis.
(c) Costin Stoica
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