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Parasitology Research

, Volume 111, Issue 5, pp 1993–2000 | Cite as

Genetic variations among Echinococcus granulosus isolates in Egypt using RAPD-PCR

  • Hoda A. TahaEmail author
Original Paper

Abstract

Cystic echinococcosis (CE), caused by hydatid cysts, is a widespread and hazardous disease in humans and animals worldwide. The aim of the current study was to investigate the genetic variations among Echinococcus granulosus cyst strains isolated from sheep, camel, pig, and donkey using RAPD-PCR analysis. Seven primers of arbitrary sequences were used in the PCR reactions. The screened primers gave total patterns ranging from 27 to 39 reproducible bands for each isolate. Each population isolate gave its specific pattern. Although distinct polymorphic patterns were obtained among the four isolates, there were several shared bands among them in each primer used. A comparison of the different RAPD-PCR patterns showed that primers P1, P3, and OPH 04 yielded band patterns that revealed a high degree of divergence among the four isolates of E. granulosus that allowed easy distinction between them. The remaining primers (P2, P4, P5, and OPH14) amplified DNA fragments that were common to two or more isolates but diversified in the other two or three isolates. The study revealed that the most closely related isolates were of donkey and camel where the similarity coefficent between them ranging from 53 % to 78 %, followed by isolates of pig and sheep (sc = 40 % to 68 %), while the similarity coefficent between isolates of camel and sheep was 33–45 %, between camel and pig was 36 to 57 %, between donkey and pig was 37 to 52 %, and between donkey and sheep was 35 to 54 % which means that they more or distant from each other. In conclusion, hydatid cysts isolated from camel may have the genotypic characters of donkey strain.

Keywords

Hydatid Cyst Echinococcus Cystic Echinococcosis Echinococcus Granulosus Cystic Echinococcosis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 2012

Authors and Affiliations

  1. 1.Biology Department, Faculty of ScienceTaibah UniversityMedinaSaudi Arabia
  2. 2.Department of Zoology, Faculty of ScienceAin Shams UniversityCairoEgypt

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