Molecular genetic profiles among individual Clonorchis sinensis adults collected from cats in two geographic regions of China revealed by RAPD and MGE-PCR methods.
Clonorchis sinensis causes the important food-borne zoonosis, clonorchiasis, which is endemic in East Asia, especially in China mainly in Guangdong, Guangxi and Heilongjiang provinces and Korea. Although comparisons on isoenzymes and some molecular profiles of C. sinensis collected from different parts of China and Korea have been studied, few works on the genetic variation among the individuals from different regions of China has been reported. In the present study, individual adults of C. sinensis were collected from cats in two geographic locations (Guangdong province in the South and Heilongjiang province in the North) of China and 44 of them were examined by using random amplified polymorphic DNA (RAPD)-PCR and mobile genetic elements (MGEs)-PCR techniques to assess the individual genetic variability within and between the two groups of this parasite. Six arbitrary primers and two pairs of MGE primers were employed in the genomic DNA amplification. The molecular patterns showed significant polymorphism among the individuals. The RAPD data displayed that the similarity coefficient (SC) of the individuals within Heilongjiang group was much higher than that of the Guangdong group, which was further confirmed by MGE-PCR results. Individuals from Heilongjiang were found genetically closer with lesser polymorphisms than those collected from Guangdong province. These results demonstrated that RAPD and MGE-PCR techniques, particularly RAPD method, could be useful for investigating genetic variations among C. sinensis individuals. They may also indicate that the genetic variation of C. sinensis occurs in the subtropical region--Guangdong--faster than that in the cold-region--Heilongjiang province--due to more generations (life cycle) occurred.
Center for Parasitic Organisms, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-Sen (Zhongshan) University, Guangzhou 510275, PR China.
De-Hua
DH
Lai
Qiao-Ping
QP
Wang
Wen
W
Chen
Lian-Shun
LS
Cai
Zhong-Dao
ZD
Wu
Xing-Quan
XQ
Zhu
Zhao-Rong
ZR
Lun
D000818:Animals; D002371:Cat Diseases / Q000469:parasitology*; D002415:Cats; D002681:China; D003003:Clonorchiasis / Q000469:parasitology / Q000662:veterinary*; D003004:Clonorchis sinensis / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D004251:DNA Transposable Elements / Q000235:genetics; D018509:DNA, Helminth / Q000032:analysis / Q000302:isolation & purification; D014644:Genetic Variation; D016133:Polymerase Chain Reaction / Q000379:methods; D019105:Random Amplified Polymorphic DNA Technique
D004251:DNA Transposable Elements; D018509:DNA, Helminth