Studies of the microaerophilic nature of Campylobacter fetus subsp. jejuni. I. Physiological aspects of enhanced aerotolerance.

摘要: The aerotolerance of the microaerophilic bacterium Campylobacter fetus subsp. jejuni strain H840 (ATCC 29428) can be enhanced by addition a combination ferrous sulfate, sodium bisulfite, and pyruvate (FBP), or dihydroxyphenyl compounds such as nor-epinephrine (NE), to Brucella broth. Transport 55Fe3+ was increased NE, suggesting that ordinary rates transport, while adequate for growth at 6% O2, might not permit 21% O2. Growth with FBP O2 did appreciably affect levels cytochromes various tricarboxylic acid cycle enzyme activities. Activities certain iron-dependent enzymes (succinate dehydrogenase aconitate hydratase), also respiration whole cells, were lower in cells grown broth compared but cause an increase these activities rates. caused decrease catalase peroxidase Total superoxide dismutase (SOD) activity when FBP...