Identification of Campylobacter jejuni, Campylobacter coli and Campylobacter lari by the nucleic acid amplification system NASBR |
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Authors: | M Uyttendaele R Schukkink B van Gemen J Debevere |
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Institution: | Department of Food Technology and Nutrition, Faculty of Agricultural and Applied Biological Sciences, UG, Ghent, Belgium;Organon Teknika, Boseind 15, Boxtel, The Netherlands |
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Abstract: | M. UYTTENDAELE, R. SCHUKKINK, B. VAN GEMEN AND J. DEBEVERE. 1994. NASBAR, an isothermal amplification technique for nucleic acids, was evaluated for the specific identification of Campylobacter jejuni, Camp. coli and Camp. lari. A set of primers and a probe were chosen from the 16S rRNA sequence of Campylobacter. The probe was hybridized in solution with the amplified nucleic acids of 12 Campylobacter species and nine other Gram-negative bacteria. The probe was shown to hybridize specifically to the amplified single-stranded RNA of Camp. jejuni, Camp. coli and Camp. lari in an enzyme-linked gel assay (ELGA). In a Camp. jejuni model system the combination of NASBAR and ELGA was able to detect ca 1000 rRNA molecules. The presence of an excess of Gram-negative bacteria did not influence the sensitivity of detection. A number of 6 cfu of Camp. jejuni , present in a total count of 4 times 106 cfu of Gram-negative bacteria, resulted in a positive hybridization signal. |
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