Genetic Diversity of Babesia bovis MSA-1, MSA-2b and MSA-2c in China

文献类型: 外文期刊

第一作者: Wang, Jinming

作者: Wang, Jinming;Yang, Jifei;Gao, Shandian;Wang, Xiaoxing;Sun, Hao;Lv, Zhaoyong;Li, Youquan;Liu, Aihong;Liu, Junlong;Luo, Jianxun;Guan, Guiquan;Yin, Hong;Yin, Hong

作者机构:

关键词: Babesia bovis; genetic diversity; merozoite surface antigen; China

期刊名称:PATHOGENS ( 影响因子:3.492; 五年影响因子:4.066 )

ISSN:

年卷期: 2020 年 9 卷 6 期

页码:

收录情况: SCI

摘要: The apicomplexan parasiteBabesia bovisis a tick-borne intracellular hemoprotozoan parasite that is widespread across China. Genetic diversity is an important strategy used by parasites to escape the immune responses of their hosts. In our present study, 575 blood samples, collected from cattle in 10 provinces, were initially screened using a nested PCR (polymerase chain reaction) for detection ofB. bovisinfection. To perform genetic diversity analyses, positive samples were further amplified to obtain sequences of threeB. bovismerozoite surface antigen genes (MSA-1, MSA-2b, MSA-2c). The results of the nested PCR approach showed that an average of 8.9% (51/575) of cattle were positive forB. bovisinfection. Phylogenetic analyses of the predicted amino acid sequences revealed that unique antigen variants were formed only by Chinese isolates. Our findings provide vital information for understanding the genetic diversity ofB. bovisin China.

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