Helicobacter mesocricetorum sp. nov., A novel Helicobacter isolated from the feces of Syrian hamsters |
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| Authors: | Simmons J H Riley L K Besch-Williford C L Franklin C L |
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| Affiliation: | Department of Veterinary Pathobiology, University of Missouri-Columbia, Columbia, Missouri 65211, USA. simmonsjh@missouri.edu |
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| Abstract: | A spiral-shaped bacterium with bipolar, single, nonsheathed flagella was isolated from the feces of Syrian hamsters. The bacterium grew as a thin spreading film at 37 degrees C under microaerobic conditions, did not hydrolyze urea, was positive for catalase and alkaline phosphatase, reduced nitrate to nitrite, did not hydrolyze hippurate, and was sensitive to nalidixic acid but resistant to cephalothin. Sequence analysis of the 16S rRNA gene and biochemical and phenotypic criteria indicate that the novel bacterium is a helicobacter. The novel bacterium is most closely related to the recently described mouse enteric helicobacter, Helicobacter rodentium. This is the first urease-negative Helicobacter species with nonsheathed flagella isolated from feces of asymptomatic Syrian hamsters. We propose to name this novel helicobacter Helicobacter mesocricetorum. The type strain is MU 97-1514 (GenBank accession number AF072471). |
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