Phylum Proteobacteria, Class Epsilonproteobacteria, Order Campylobacterales, Family Campylobacteraceae, Genus Campylobacter,
Campylobacter ureolyticus (Jackson and Goodman 1978) Vandamme et al. 2010.
Basonym: Bacteroides ureolyticus Jackson and Goodman 1978.
Gram-negative cells, 0.5 x 1.5-4 μm. Nonmotile. Filaments exceeding 20 μm in length
Colonies on blood agar are translucent, pinpoint, 1-2 mm or up to 5 mm in diameter.
Does not grow microaerobically on common agar bases in an atmosphere without
hydrogen. Will not grow in air, in a CO2-enriched atmosphere, or in an atmosphere
containing O2:CO2:N2 (5:10:85) on common agar bases. Requires formate and
fumarate for growth. No growth at 25 ºC. Some strains may grow at 42 ºC.
Grows on media containing 0.05% sodium fluoride, 1% glycine, 2-4.0% NaCl and
0.032% methyl orange, but not on 0.04% 2,3,5-triphenyl-tetrazolium chloride, 1.5-2%
ox-bile & 0.02% safranin.
Isolated from superficial ulcers and soft tissue infections, nongonococcal, nonchlamydial urethritis, and periodontal disease.
Uncertain. Strains were isolated from mixed infections.
- Don J. Brenner and J.J. Farmer III, 2001. Family I. Campylobacteraceae. In: Bergey’s Manual of Systematic Bacteriology, Second
edition,Vol 2, part C, George M. Garrity (Editor-in-Chief), pp 1145-1168.
- P. Vandamme, L. Debruyne, E. De Brandt, and E. Falsen. Reclassification of Bacteroides ureolyticus as Campylobacter
ureolyticus comb. nov., and emended description of the genus Campylobacter. Int J Syst Evol Microbiol September 2010 60:2016-
Positive results for urease, nitrate reduction, oxidase, casein hydrolysis (weak), & gelatin hydrolysis.
Negative results for indoxyl acetate hydrolysis, selenite reduction, alkaline phosphatase, DN-ase, catalase (most strains), H2S
production on TSI & hippurate hydrolysis. No carbohydrates fermentation.
(c) Costin Stoica