부산지역 노로바이러스의 유전적 분석
Genetic analysis of norovirueses in Busan
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초록
For detection of noroviruses (NVs), we compared various PCR primer sets based on reverse transcription nested PCR (RT-nested PCR) in the water samples from Dong brook in Busan, South Korea. We designed various new primer sets based on the most conserved sequences of the capsid protein gene that react with diverse NVs found in Korea. Designed primer sets (KG1F/KG1R and KG2F/KG2R, named as PNK) for the respective genogroups of NVs, genogroup I and II (GI and GII), were applied to detect NVs in the water samples from Dong brook concentrated with ultracentrifugation. In the application to the water samples, proportion of GI (76.47%) and GII (70.59%) in water samples of Dong brook in RT-nested PCR with the primer sets of this study. However, no significant differences of the proportion of the positive samples were not found between RT-nested PCRs with reported and newly designed primer sets. From the nucleotide sequencing, GI and GII of NVs present in Dong brook were appeared to be the members of 1/2/4/5/9/10 genotypes, and 3/4/5/11/13 genotypes respectively. Appeared genotype 4 of GII known as an one of main genotype found in patients of many Asian countries warned us to consider the risks of norovirus in aquatic environments in southern part of Korea.
Abstract
For detection of noroviruses (NVs), we compared various PCR primer sets based on reverse transcription nested PCR (RT-nested PCR) in the water samples from Dong brook in Busan, South Korea. We designed various new primer sets based on the most conserved sequences of the capsid protein gene that react with diverse NVs found in Korea. Designed primer sets (KG1F/KG1R and KG2F/KG2R, named as PNK) for the respective genogroups of NVs, genogroup I and II (GI and GII), were applied to detect NVs in the water samples from Dong brook concentrated with ultracentrifugation. In the application to the water samples, proportion of GI (76.47%) and GII (70.59%) in water samples of Dong brook in RT-nested PCR with the primer sets of this study. However, no significant differences of the proportion of the positive samples were not found between RT-nested PCRs with reported and newly designed primer sets. From the nucleotide sequencing, GI and GII of NVs present in Dong brook were appeared to be the members of 1/2/4/5/9/10 genotypes, and 3/4/5/11/13 genotypes respectively. Appeared genotype 4 of GII known as an one of main genotype found in patients of many Asian countries warned us to consider the risks of norovirus in aquatic environments in southern part of Korea.
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