期刊
BRITISH POULTRY SCIENCE
卷 63, 期 2, 页码 171-178出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00071668.2021.1966751
关键词
Multiplex qPCR; Salmonella enteritidis; Salmonella typhimurium
This study successfully developed a multiplex qPCR molecular diagnostic kit for rapid and accurate diagnosis of Salmonella enterica serovar Enteritidis and S. enterica serovar Typhimurium in poultry samples, demonstrating 100% specificity and sensitivity values. The newly developed technique can serve as an alternative method to conventional serotyping in laboratories lacking adequate infrastructure.
1. The aim of this study was to develop a multiplex quantitative polymerase chain reaction (qPCR) based molecular diagnostic kit for rapid diagnosis of Salmonella enterica serovar Enteritidis and S. enterica serovar Typhimurium serotypes, which are frequently isolated worldwide from poultry samples. 2. Detection and discrimination of S. Enteritidis and S. Typhimurium were performed by targeting the sdf and the STM4492 (putative cytoplasmic protein) gene, respectively. The invA (invasion protein) gene was used to detect Salmonella spp. as a target gene, since it is considered a standard. In this study, a total of 200 bacterial strains (178 Salmonella spp. strains and 22 other genera) were used to test the specificity and sensitivity of the developed kit. The limit of detection (LOD) of the assays was determined to be 10(0)-10(1) cfu/25 g from chicken meat samples artificially contaminated by litter and 10(0)-10(1) cfu/ml for cloacal swab samples. 3. The multiplex qPCR results were 100% compatible with conventional serotyping results while the specificity and sensitivity values were 100%. These findings indicated that the newly developed multiplex qPCR technique can provide an alternative method to conventional serotyping of S. Enteritidis and S. Typhimurium in laboratories lacking adequate infrastructure.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据