Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Helicobacteraceae, Genus Helicobacter,
Helicobacter suis Baele et al. 2008.
Old synonym: "Candidatus Helicobacter suis" De Groote et al. 1999.
Gram-negative, tightly coiled spiral cells with up to six turns, that are approximately
2.3-6.7 μm long x 0.9-1.2 μm wide. Periplasmic fibrils are not observed. Motile by
means of tufts of 4 to 10 sheathed flagella at both ends of the cells. Some flagella
end in a spherical knob that is twice the mean diameter of the flagellar body.
Microaerophilic. Weak growth after anaerobic incubation. Grows on BHI agar, Brucella
agar and on Mueller-Hinton agar supplemented with 20 % fetal calf serum or with
10% horse blood. Grows at 37 ºC, but not at 25 ºC or 42 ºC. No growth on media
supplemented with 1.5% NaCl, 1% glycine, 1% ox bile or 5 μg/ml metronidazole.
Found in the gastric and pyloric crypts of the pig stomach.
Associated with ulceration of the non-glandular stomach and gastritis in pigs.
- 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.
- M. Baele, A. Decostere, P. Vandamme, L. Ceelen, A. Hellemans, J. Mast, K. Chiers, R. Ducatelle, and F. Haesebrouck. Isolation
and characterization of Helicobacter suis sp. nov. from pig stomachs. Int J Syst Evol Microbiol June 2008 58:1350-1358.
Positive results for alkaline phosphatase, L-arginine arylamidase, catalase, esterase, gamma-glutamyltransferase, oxidase, TTC,
Negative results for hippurate hydrolysis, indoxyl acetate hydrolysis, nitrate reduction, pyrrolidonyl arylamidase, and L-aspartate
(c) Costin Stoica