Submitted: 02 Jun 2017
Accepted: 13 Sep 2017
First published online: 06 Dec 2017
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Avicenna J Clin Microbiol Infect. 2018;5(2):14-19.
doi: 10.15171/ajcmi.2018.03
  Abstract View: 14
  PDF Download: 17

Research Article

Molecular Characteristics of Echinococcus granulosus Strains Isolated from Iranian Camel Using High Resolution Melting Analysis of atp6 and cox1 Genes

Fatemeh Eskandari 1, Mohammad Ali Mohaghegh 2, Farzaneh Mirzaei 3, Mohsen Ghomashlooyan 1, Seyed Hossein Hejazi 4 * ORCiD

1 Department of Parasitology and Mycology, Isfahan University of Medical Sciences, Isfahan, Iran
2 Department of Laboratory Sciences, Torbat Heydariyeh University of Medical Sciences, Torbat Heydariyeh, Iran
3 Faculty of Para-Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
4 Skin Diseases and Leishmaniasis Research Center, Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
*Corresponding author: Seyed Hossein Hejazi, Skin Diseases and Leishmaniasis Research Center, Department of Parasitology and Mycology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran Email: Email: hejazi@med.mui.ac.ir

Abstract

Background: Cystic echinococcosis (CE) also known as hydatid disease, is a zoonotic helminthic disease caused by infection with the larval stage of a tapeworm Echinococcus granulosus. It is an important parasite regarding human health and is categorized into different genotypes. The present study aimed to identify different genotypes of E. granulosus metacestode isolated from Iranian camel.

Methods: In this cross-sectional study, 54 hydatid cysts were isolated from slaughtered Iranian camels (Camelus dromedarius) in Isfahan (33 samples) and Yazd (21 samples) province s’ laughterhouses. The DNA was extracted from the isolated hydatid cysts and high resolution melting analysis (HRM) was performed. The curves were confirmed by sequencing and aligning with previously deposited sequences.

Results: Based on the results of the present study, 94.4%, 3.7%, and 1.9% of the studied isolates were identified as E. granulosus (G1), E. granulosus (G2), and E. intermedius (G6) in the two studied regions, respectively. Moreover, 85.18% of the cysts were isolated from lung and 5.82% of them were also isolated from the liver of the camels.

Conclusion: Based on the HRM analysis of cox1 and atp6 genes, E. granulosus (G1) accounts for the most cases of camelid cystic echinococcosis, and demonstrates camels as a source of human cystic echinococcosis.

 
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