中国寄生虫学与寄生虫病杂志 ›› 1997, Vol. 15 ›› Issue (4): 216-219.

• 论著 • 上一篇    下一篇

我国与日本山梨不同地域品系日本血吸虫DNA的限制性片段长度多态性分析

谢觅; 何毅勋; 裘丽姝; 陈伟   

  1. 中国预防医学科学院寄生虫病研究所
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1997-08-30 发布日期:1997-08-30

RESTRICTION FRAGMENT LENGTH POLYMORPHISM OF DNA OF SCHISTOSOMA JAPONICUM AMONG VARIOUSSTRAINSIN CHINA AND YAMANASHI

Xie Mi; He Yixun; Qiu L izhu; Chen Wei   

  1. Institute of Parasitic Diseases* *; Chinese Academy of Preventive Medicine Shanghai 200025
  • Received:1900-01-01 Revised:1900-01-01 Online:1997-08-30 Published:1997-08-30

摘要: 目的 :为了进一步了解中国各地日本血吸虫的特性 ,将其与日本山梨的日本血吸虫进行了虫体 DNA限制性片段长度多态性 ( RFLP)的分析和比较。方法 :以 p SM889为探针 ,与我国云南、四川、广西、湖北、湖南、江西、安徽、台湾和日本山梨的日本血吸虫雄虫 DNA进行杂交。结果 :经限制性内切酶 Eco RI酶切的我国 7地日本血吸虫 DNA与探针杂交的图谱显示弱杂交带数目呈现差异 ,而其 4条强杂交带数目则相同。但是,台湾及日本山梨的日本血吸虫 DNA杂交图谱不仅弱杂交带数目呈现差异 ,而且强杂交带数目亦有不同 ;前者的强杂交带数目为 3条 ,后者则为 5条。结论 :我国与日本山梨不同地区的日本血吸虫核基因组存在着遗传变异, 台湾省的日本血吸虫的遗传变异程度远较其他省份的更为显著。

关键词: 日本血吸虫, 品系, DNA杂交, RFLP分析

Abstract: AIM:In order to understand the characteristics of various isolates of Schistosoma
japonicum in China,restriction fragment length polymorphism of DNA(RFLP) of these worm isolates
were analyzed and compared with S.japonicum from Yamanashi of Japan. METHODS:PSM889was used as
probe to hybridize the genomic DNA of male worms from 9different localities ie.Yunan (Y) ,Sichun
(S) ,Guangxi (G) ,Hubei (B) ,Hunan (N) , Jiangxi(J) ,Anhui(A) ,Taiwan(T) of China and Yamanashi
of Japan(JP) .RESULTS: The 4 major bands of hybridization of DNA digested by EcoR1 were basically the same among the localities from the mainland of China, while their minor bands showed some differences. However, the DNA hybridization pattern of S. japonicum from Taiwan and Yamanashi of Japan not only numerically differed in minor bands but also in major bands. There were 3 major bands for isolate from Taiwan and 5 major bands for isolate from Yamanashi, Japan. CONCLUSION: There are genitic variations among various isolates of S.japonicum in China and that in Yamanashi, J pan, and the degree of genetic variation is more obvious for isolate from Taiwan than that in other provinces

Key words: Schistosoma japonicum, isolate, DNA, RFLP