Prevalence and Genetic Characterization of Toxoplasma gondii in House Sparrows (Passer domesticus) in Lanzhou, China

文献类型： 外文期刊

第一作者： Cong, Wei

作者： Cong, Wei;Huang, Si-Yang;Zhou, Dong-Hui;Zhang, Xiao-Xuan;Zhang, Nian-Zhang;Zhu, Xing-Quan;Cong, Wei;Zhao, Quan;Zhu, Xing-Quan;Zhang, Xiao-Xuan

作者机构：

关键词： Toxoplasma gondii;sparrow;seroprevalence;PCR-RFLP typing;northwestern China

期刊名称：KOREAN JOURNAL OF PARASITOLOGY （ 影响因子：1.341； 五年影响因子：1.669 ）

ISSN： 0023-4001

年卷期： 2013 年 51 卷 3 期

页码：

收录情况： SCI

摘要： The prevalence of Toxoplasma gondii infection in birds has epidemiological significance because birds are indeed considered as a good indicator of environmental contamination by T. gondii oocysts. In this study, the prevalence of T. gondii in 313 house sparrows in Lanzhou, northwestern China was assayed by the modified agglutination test (MAT). Antibodies to T. gondii were positive in 39 (12.46%) of 313 samples (MAT titer >= 1:5). Tissues of heart, brain, and lung from the 39 seropositive house sparrows were tested for T. gondii DNA, 11 of which were found to be positive for the T. gondii B1 gene by PCR amplification. These positive DNA samples were typed at 9 genetic markers, including 8 nuclear loci, i.e., SAG1, 5'- and 3'-SAG2, alternative SAG2, SAG3, GRA6, L358, PK1, c22-8 and an apicoplast locus Apico. Of them, 4 isolates were genotyped with complete data for all loci, and 2 genotypes (Type II variants; ToxoDB #3 and a new genotype) were identified. These results showed that there is a potential risk for human infection with T. gondii in this region. To our knowledge, this is the first report of T. gondii seroprevalence in house sparrows in China.

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