›› 2016, Vol. 43 ›› Issue (3): 825-830.doi: 10.16431/j.cnki.1671-7236.2016.03.038

• 疾病防治 • 上一篇    下一篇

洱源、怒江猫源弓形虫虫株的分离与鉴定

李浩欣, 严红亚, 段纲, 项勋, 朱旗, 杨志远, 祖菲, 常华   

  1. 云南农业大学动物科学技术学院, 昆明 650201
  • 收稿日期:2015-07-14 出版日期:2016-03-20 发布日期:2016-03-30
  • 通讯作者: 常华 E-mail:375845001@qq.com
  • 作者简介:李浩欣(1990-),男,内蒙古五原人,硕士生,研究方向:兽医药理毒理学,E-mail:281957558@qq.com
  • 基金资助:
    云南省林业厅野生禽类重大动物疫病监测项目(K2400033);云南省高端人才引进计划项目(A3006886);云南农业大学研究生科技创新项目(2015ykc1);云南省教育厅科学研究基因项目(2015J059)

Isolation and Identification of Toxoplasma gondii Isolates from Cats in Eryuan and Nujiang

LI Hao-xin, YAN Hong-ya, DUAN Gang, XIANG Xun, ZHU Qi, YANG Zhi-yuan, ZU Fei, CHANG Hua   

  1. College of Animal Science and Technology, Yunnan Agricultural University, Kunming 650201, China
  • Received:2015-07-14 Online:2016-03-20 Published:2016-03-30

摘要: 为了分离猫源弓形虫,本试验从云南洱源、怒江两地区捕捉18只野猫,取其心脏、肝脏、肺脏、脑组织用盐酸—胃蛋白酶溶液消化处理后,腹腔接种小白鼠,将分离到的弓形虫虫株至少传3代,用特异PCR方法对所分离的虫株进行鉴定。结果表明,从18只野猫的样品中分离出3株弓形虫虫株,用特异性引物对3株虫株进行PCR鉴定,均得到弓形虫的特异性目的条带,测序结果表明所扩增出的DNA片段确为弓形虫核糖体B1基因部分序列。同源性比对分析结果显示分离株与T.gondii B1的同源性为100.0%。将动物组织用盐酸—胃蛋白酶溶液消化处理后腹腔接种小白鼠是一种分离弓形虫虫株较理想的方法,对弓形虫B1基因进行特异性扩增,可以快速地鉴定弓形虫虫株。

关键词: 弓形虫; 野猫; B1基因; PCR鉴定

Abstract: The assay was aimed to isolate Toxoplasma gondii (T.gondii) strains from stray cat in Eryuan and Nujiang of Yunnan province.The cat tissues (heart,liver,lung and brain) were digested by acid pepsin solution,intraperitoneally inoculated in Kunming mice,passaged at least 3 generations,and followed by specific PCR amplification of partial B1 gene using species-specific primers.Three T.gondii isolates were isolated from 18 stray cats,PCR result showed that we got the specific target band,and the sequence result of the specific PCR product showed that it was ribosome B1 gene sequence of T.gondii. Homology comparison analysis showed that the isolates was 100.0% homology with T.gondii B1.The method of inoculation into the mice with the tissues that was digested by acid pepsin solution was an effective way to isolate T.gondii strain from animals,and the specific PCR assay was an accurate method for the rapid identification of T.gondii.

Key words: Toxoplasma gondii; stray cat; B1 gene; PCR identification

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