Seroprevalence, risk factors and genetic characterization of Toxoplasma gondii in free-range white yaks (Bos grunniens) in China

文献类型： 外文期刊

第一作者： Qin, S. Y.

作者： Qin, S. Y.;Zhou, D. H.;Cong, W.;Zhang, X. X.;Lou, Z. L.;Yin, M. Y.;Tan, Q. D.;Zhu, X. Q.;Qin, S. Y.;Cong, W.;Zhang, X. X.;Lou, Z. L.;Zhu, X. Q.;Yin, M. Y.;Tan, Q. D.

作者机构：

关键词： Toxoplasma gondii;Seroprevalence;Risk factors;Genotype;White yak;Modified agglutination test (MAT)

期刊名称：VETERINARY PARASITOLOGY （ 影响因子：2.738； 五年影响因子：2.951 ）

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年卷期：

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收录情况： SCI

摘要： The objective of this study was to determine the seroprevalence, risk factors and genotypes of Toxoplasma gondii in white yaks (Bos grunniens) in China. A total of 974 serum samples were collected from white yaks in Tianzhu Tibetan Autonomous County (TTAC), Gansu province, northwest China for detecting T. gondii antibodies by the modified agglutination test (MAT), and 414 tissues belonging to 138 white yaks were collected for detecting T. gondii DNA by amplification of B1 gene with a semi-nested PCR. A total of 155 serum samples (15.91%) were seropositive for T. gondii antibodies at a 1:100 cut-off, and 10 DNA samples (7.25%) were positive for the T. gondii B1 gene, which were genetically characterized using multilocus PCR-RFLP. Only one genotype (ToxoDB#9) was identified from two samples with complete genotyping results. Statistically significant differences were not observed between T. gondii seroprevalence and gender, season or pregnancy in the logistic regression analysis (P > 0.05). Ages of white yaks was considered as a main risk factor associated with T. gondii infection. Our results indicated a widespread exposure to T. gondii among white yaks, and revealed the genotype ToxoDB#9 of T. gondii in white yaks for the first time in China. (C) 2015 Elsevier B.V. All rights reserved.

分类号： S85

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