Detection of bacteria belonging to the genus campylobacter...

C - Chemistry – Metallurgy – 12 – Q

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C12Q 1/68 (2006.01) C12N 15/09 (2006.01) C12Q 1/04 (2006.01)

Patent

CA 2718214

Multiplex PCR primers that can amplify the cdt genes of C. jejuni, C. coli, and C. fetus in a bacterial species-specific manner were prepared. Multiplex PCR with the primers was assessed using Campylobacter bacteria, other cdt gene-positive bacteria, and representative bacteria responsible for enteric infection. As a result, the present inventors' multiplex PCR using cdtB amplification primers was proven to enable simultaneous detection of different Campylobacter bacteria with high specificity. The methods of the present invention can identify Campylobacter at the bacterial species level in a single manipulation even when domestic animals or humans are infected with different bacterial species of Campylobacter.

Des amorces de PCR multiplexe, qui permettent d'amplifier spécifiquement par espèce des gènes cdt de C. jejuni, C. coli et C. fetus, sont produites et la PCR multiplexe est évaluée en utilisant des bactéries appartenant au genre Campylobacter ainsi que d'autres bactéries positives au gène cdt et des bactéries provoquant habituellement des infections intestinales. En conséquence, il a été démontré que la PCR multiplexe, utilisant les amorces d'amplification de cdtB telles que décrites ci-dessus, permet la détection simultanée, avec une spécificité élevée, de multiples sortes de bactéries appartenant au genre Campylobacter. Selon ce procédé, il est possible d'identifier les bactéries Campylobacter au niveau de l'espèce par une opération unique dans le cas d'une infection mixte de bétail ou d'êtres humains, par l'utilisation de bactéries appartenant au genre Campylobacter.

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