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J Clin Microbiol. 1992 October; 30(10): 2613-2619

Specific detection of Campylobacter jejuni and Campylobacter coli by using polymerase chain reaction.

B A Oyofo, S A Thornton, D H Burr, T J Trust, O R Pavlovskis and P Guerry

Enteric Diseases Program, Naval Medical Research Institute, Bethesda, Maryland 20889-5055.

ABSTRACT

Development of a routine detection assay for Campylobacter jejuni and Campylobacter coli in clinical specimens was undertaken by using the polymerase chain reaction (PCR). An oligonucleotide primer pair from a conserved 5' region of the flaA gene of C. coli VC167 was used to amplify a 450-bp region by PCR. The primer pair specifically detected 4 strains of C. coli and 47 strains of C. jejuni; but it did not detect strains of Campylobacter fetus, Campylobacter lari, Campylobacter upsaliensis, Campylobacter cryaerophila, Campylobacter butzleri, Campylobacter hyointestinalis, Wolinella recta, Helicobacter pylori, Escherichia coli, Shigella spp., Salmonella spp., Vibrio cholerae, Citrobacter freundii, or Aeromonas spp. By using a nonradioactively labeled probe internal to the PCR product, the assay could detect as little as 0.0062 pg of purified C. coli DNA, or the equivalent of four bacteria. In stools seeded with C. coli cells, the probe could detect between 30 and 60 bacteria per PCR assay. The assay was also successfully used to detect C. coli in rectal swab specimens from experimentally infected rabbits and C. jejuni in human stool samples.

J Clin Microbiol. 1992 October; 30(10): 2613-2619




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