title: Oxygen tolerance estimates in Campylobacter species depend on the testing medium.
abstract: Oxygen tolerance of the microaerophile Campylobacter jejuni subsp. jejuni varied with different brands of complex media which were used for plating the dilute cell suspensions. The tryptone component was one factor. With some tryptones growth occurred at 21% oxygen whereas with others there was no growth at oxygen levels of 15% or higher. A chemically-defined, agar-solidified plating medium was used to estimate the oxygen tolerance of Camp. jejuni subsp. jejuni, Camp. coli and Camp. fetus subsp. fetus, and also to assess the effect of added scavengers of reactive oxygen intermediates on the oxygen tolerance. Some scavengers such as allopurinol, azelaic acid, caffeine, cimetidine, TEMPOL and pyruvate enhanced oxygen tolerance markedly whereas others such as carnosine, dimethyl thiourea, spermidine and superoxide dismutase had little effect.
authors: Department of Biology, Virginia Polytechnic Institute, Blacksburg.
authors: J P
authors: JP
authors: Hodge
authors: N R
authors: NR
authors: Krieg
mesh_terms: D002167:Campylobacter / Q000187:drug effects* / Q000254:growth & development / Q000302:isolation & purification; D017000:Campylobacter coli / Q000187:drug effects / Q000254:growth & development / Q000302:isolation & purification; D002168:Campylobacter fetus / Q000187:drug effects / Q000254:growth & development / Q000302:isolation & purification; D016123:Campylobacter jejuni / Q000187:drug effects / Q000254:growth & development / Q000302:isolation & purification; D003470:Culture Media; D016166:Free Radical Scavengers; D014644:Genetic Variation; D010100:Oxygen / Q000494:pharmacology*; D010461:Peptones / Q000494:pharmacology; D017382:Reactive Oxygen Species
chemical_list: D003470:Culture Media; D016166:Free Radical Scavengers; D010461:Peptones; D017382:Reactive Oxygen Species; C001830:tryptones; D010100:Oxygen