1.Establishment and evaluation of identification method for Yersinia pestis and Yersinia pseudotuberculosis.
Guoxiang SHI ; Zheng ZHANG ; Lingling MEI ; Jinhua CHEN ; Shenghua MEI ; Dazhi JIN ; Zhikai ZHANG ; Yumeng WANG ; Xiaohe ZHANG ; Yun LUO ; Jimin SUN ; Dongzheng YU ; Lianxu XIA ; Email: XIALIANXU@ICDC.CN.
Chinese Journal of Epidemiology 2015;36(5):496-500
OBJECTIVETo establish a gene identification method of Yersinia pestis and Yersinia pseudotuberculosis for plague surveillance.
METHODSAccording to the specific genomic sequences of Y. pestis and Y. pseudotuberculosis, i.e. "pestis Island (PeI)" and "pseudotuberculosis Island (PsI)" and the published genomic sequences of 12 strains of Y. pestis and 4 strains of Y. pseudotuberculosis, the specific identification primers of these sequences were designed.
RESULTSA total of 52 strains of Y. pestis and 57 strains of Y. pseudotuberculosis and other intestinal bacteria strains were tested with PCR. Of the 5 pairs of Y. pestis identification primers, PeI2 and PeI11 were specific for Y. pestis. Besides Y. pestis, the primers PeI1, PeI3 and PeI12 could detect part of 57 Y. pseudotuberculosis strains. Of the 5 pairs of Y. pseudotuberculosis identification primers, PsI1 could detect all the 52 strains of Y. pestis and 57 strains of Y. pseudotuberculosis. PsI7, PsI16, PsI18 and PsI19 were specific for Y. pseudotuberculosis.
CONCLUSIONThe primers PsI1, PeI 2 and PeI11, PsI7, PsI16, PsI18 and PsI19 can be used in the rapid identification of Y. pestis and Y. pseudotuberculosis, which can be also used to explore the circulation of atypical Y. pestis in quiescent plague foci.
Base Sequence ; China ; epidemiology ; DNA Primers ; Genomics ; Humans ; Plague ; diagnosis ; epidemiology ; Polymerase Chain Reaction ; Population Surveillance ; methods ; Yersinia pestis ; genetics ; Yersinia pseudotuberculosis ; genetics
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