犬細小病毒的新型原液熒光定量PCR方法的建立
[Abstract]:In order to establish a TaqMan fluorescence quantitative PCR method for detecting canine parvovirus (CPV) by sample supernatant, the recombinant plasmid was constructed by amplifying part of CPV NS gene, and the TaqMan fluorescence quantitative PCR method was established. The reaction conditions, specificity and sensitivity of the established method were detected. The fluorescence quantitative PCR of nucleic acid was compared with the fluorescence quantitative PCR of the original solution by the established method. Finally, the suspected cases of CPV in clinic were detected. The results showed that the method was specific and could not amplify common viruses in dogs. The sensitivity of this method is 101copias / L, the coefficient of variation within the assay is 0.09 and the coefficient of variation between batches is 0.570.94 and the repeatability is good. The detection concentration of nucleic acid fluorescence quantitative PCR and original fluorescence quantitative PCR can reach 101 copies/L, and the product concentration of fluorescence quantitative PCR in the original solution is about 7 times of that of nucleic acid fluorescence quantitative PCR, which indicates that nucleic acid has a large loss in the extraction process. A total of 128 positive samples were detected from 187 clinical samples. The positive coincidence rate with PCR and colloidal gold rapid detection plate was 100, and the coincidence rate between nucleic acid method and original solution method was 100. Therefore, compared with ordinary PCR and colloidal gold rapid detection plate, the TaqMan quantitative PCR method of CPV raw material has higher positive detection rate and better accuracy than that of ordinary PCR and colloidal gold rapid detection plate.
【作者單位】: 成都軍區(qū)疾病預防控制中心;四川農業(yè)大學動物醫(yī)學院動物疫病與人類健康四川省重點實驗室;
【基金】:國家公益性行業(yè)(農業(yè))科研重大專項(201303042) 全軍醫(yī)學科技青年培育項目(14QNP057) 成都大熊貓繁育研究基金會項目(CPF2015-4)
【分類號】:S852.655
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