| 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.
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.
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 and 42 ºC. No
growth on media containing 1.0% glycine or 1.5% NaCl. Poor or no growth under
anaerobic conditions.
results in either pinpoint colonies or a thin spreading film. Grow at 37 and 42 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).
Resistant to cephalothin (30 μg) in disk diffusion tests. Susceptible to nalidixic acid (5/6 strains).
Undetermined
- 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. - Collado L, Jara R, Gonzalez S. Description of Helicobacter valdiviensis sp. nov., an Epsilonproteobacteria isolated from wild bird
faecal samples. Int J Syst Evol Microbiol 2014; 64:1913-1919.
Positive for catalase, alkaline phosphatase and nitrate reduction (6/7).
Negative results for urease, gamma-glutamyltransferase, H2S production and hippurate hydrolysis.
Negative results for urease, gamma-glutamyltransferase, H2S production and hippurate hydrolysis.
(c) Costin Stoica
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