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Rapid detection and characterization of Salmonella enterica serovars by multiplex polymerase chain reaction assay

机译:多重聚合酶链反应法快速检测和鉴定肠炎沙门氏菌

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Multiplex polymerase chain reaction (PCR) was used for molecular typing ofSalmonella?enterica?serovars in Egypt. During the summer of 2010, a total of 1075 samples were collected from cattle, sheep and poultry farms to be subjected for isolation of?Salmonella?(290 rectal swabs from cattle, 335 rectal swabs from sheep and 450 cloacal swabs from poultry). Bacteriological examination revealed the isolation of 68?Salmonella?belonging to 13 different?Salmonella?serovars. The most common serovars were?Salmonella?Typhimurium (16 isolates),?Salmonella?Enteritidis (13 isolates),?Salmonella?Kentucky (eight isolates) and?Salmonella?Arizona (seven isolates). Other serovars typed were?Salmonella?Heidelberg (four),?Salmonella?Cerro (four),?Salmonella?Gallinarum (three),?Salmonella?Virginia (three),?SalmonellaParatyphi-A?(three),?Salmonella?Dublin (two),?Salmonella?Agona (two),?SalmonellaHadar (two) and?Salmonella?Bardo (one). The results of molecular techniques highlight the usefulness of the multiplex PCR for the rapid detection of the two serotypes of?Salmonella?from field samples especially after pre-enrichment on Rappaport-Vassiliadis (RV) media. Moreover, detecting?S.?Typhimurium and?S.Enteritidis by this assay was carried out within two days as opposed to five to six days by the bacteriological and serological methods.
机译:多重聚合酶链反应(PCR)用于埃及沙门氏菌肠球菌血清型的分子分型。在2010年夏季,共从牛,绵羊和家禽场中收集了1075个样本用于沙门氏菌的分离(牛的290个直肠拭子,绵羊的335个直肠拭子和家禽的450个泄殖腔拭子)。细菌学检查显示分离出68株沙门氏菌,属于13种不同的沙门氏菌血清型。最常见的血清型是沙门氏菌鼠伤寒沙门氏菌(16株),沙门氏菌肠炎沙门氏菌(13株),沙门氏菌肯塔基州(8株)和沙门氏菌亚利桑那州(7株)。其他类型的血清型包括沙门氏菌,海德堡(四株),沙门氏菌,塞罗(四株),沙门氏菌,加利纳鲁姆(三株),沙门氏菌,弗吉尼亚州(三株),沙门氏菌Paratyphi-A?(三株),沙门氏菌,都柏林(三株)。两个),沙门氏菌Agona(两个),沙门氏菌Hadar(两个)和沙门氏菌Bardo(一个)。分子技术的结果突显了多重PCR的作用,特别是在Rappaport-Vassiliadis(RV)培养基上预富集后,可用于快速检测田间样品中两种沙门氏菌血清型。而且,用这种测定法检测鼠伤寒沙门氏菌和肠炎沙门氏菌是在两天内完成的,而细菌学和血清学方法则是五至六天。

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