中国寄生虫学与寄生虫病杂志 ›› 1998, Vol. 16 ›› Issue (3): 181-184.

• 论著 • 上一篇    下一篇

我国山丘疫区与平原疫区利什曼虫分离株分子核型分析

吕芳丽; 胡孝素; 汤海妹; 曾凡亚; 张义正; 戴保民   

  1. 华西医科大学寄生虫学研究室; 四川联合大学生物工程系; 华西医科大学钩端螺旋体研究室
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-06-30 发布日期:1998-06-30

ANALYSIS OF MOLECULAR KARYOTYPE OF LEISHMANIA ISOLATES FROM HILLY FOCI AND PLAIN FOCI OF CHINA

Lu Fangli1; Hu Xiaosu1; Tang Haimei2; Zeng Fanya2; Zhang Yizheng2; Dai Baomin3   

  1. 1 Department of Parasitology, West China University of Medical Sciences, Chengdu 610041 2 Department of Biotechnology, Sichuan Union University, Cheng du 6100643 Department of Pathologic Physiology , West China University of Medical Sciences, Cheng du 610041
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-06-30 Published:1998-06-30

摘要: 目的:分析我国山丘疫区和平原疫区利什曼原虫分离株分子核型。方法:脉冲场电泳。采用1%琼脂糖凝胶,电压6V/cm,0.5×TBE,14℃,脉冲时间60s,电泳15h和脉冲时间90s,电泳9h。结果:各个分离株均分离出分子量范围在200kb-2200kb的EB染色条带为15条左右,其中6个山丘疫区分离株之间的核型相似,且犬
株与人株的亦相似,并与L.infantum的核型接近;2个平原疫区分离株之间的核型相似;山丘疫区与平原疫区分离株之间的核型不同。结论:山丘疫区分离株之间和平原疫区分离株之间均各自存在着同源性,山丘疫区分离株与L.infantum之间存有部分同源性,但两个疫区分离株之间存在着异源性;保虫宿主——家犬,是我国山丘疫区内脏利什曼病的重要传染源。

关键词: 利什曼原虫, 脉冲场电泳, 山丘疫区, 平原疫区, 同源性, 异源性

Abstract: AIM: To analyse the molecular karyotypes of Leishmania isolates from
hilly and plain foci of China. METHODS: Pulsed field gel electrophoresis(PFGE) was
performed in 1% agarose at 6 V/cm in 0.5×TBE at 14℃ with a pulse time of 60 s for
15 h and a pulse time 90 s for 9 h. RESULTS: Each isolate was resolved into 15
different EtBr staining bands ranging in size from 200 to 2 200 kb, in which the
karyotypes of 6 isolates from hilly foci were similar(including karyoptypes of
canine isolates similar with those of human isolates), and they were partly similar with those of L. infantum. The karyo types of the two isolates from plain foci were similar, but the isolates from the two topographically different foci were different from each other. CONCLUSION: Homology exists between L. d. isolates from hilly foci and plain foci respectively, and exists in part between L. d. isolates from hilly foci and L. infantum ; while heterogeneity exist s between L. d. isolates from hilly foci and plain foci. The reservoir host, domestic dog, plays an important role as the infection source of leishmaniasis in the hilly foci of China.

Key words: Leishmania, PFGE, hilly foci, plain foci, homology, heterogeneity