Veterinary Research Forum
Vet Res Forum

Molecular phylogenetic and genetic variability of Fasciola gigantica in Kermanshah province, western Iran with an overview to understand haplotypes distribution in Asia and Africa

Document Type : Original Article

Authors

Mohammad Bagher Rokni 1
Homayoon Bashiri 2
Saber Raeghi 3
Aref Teimouri 4
Vahid Shojaeimotlagh 5
Mohammad Reza Shiee 1
Arezoo Bozorgomid 2

1 Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

2 Infectious Diseases Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran

3 Department of Laboratory Sciences, Maragheh University of Medical Sciences, Maragheh, Iran

4 Department of Parasitology and Mycology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran

5 Department of Medical Surgical Nursing, Khoy University of Medical Sciences, Khoy, Iran

https://doi.org/10.30466/vrf.2019.98547.2350
Abstract
Over the last decade, diagnostic tools to detect and differentiate Fasciola species have improved, but our understanding of the distribution of haplotypes and population structure of this parasite is less clear. This study was designed to survey this gap in the F. gigantica epidemiology in Kermanshah province, western Iran from 2015 to 2017.Sixty-eight Fasciola isolates were collected from slaughterhouses from this province. We evaluated the PCR-RFLP assay of the ITS1 genes for the identification of Fasciola species using the RsaI enzyme. After Fasciola species identification, the partial sequence of mitochondrial NADH dehydrogenase subunit 1 (ND1) gene of F. gigantica was used for subsequent construction of the phylogenetic tree and network analysis.Based on the PCR-PRFLP profile, one (6.25%) of sheep isolates and 19 (39.60%) of cattle isolates were detected as F. gigantica, whereas 93.75% of sheep isolates, 60.40% of cattle isolates and all of the goat isolates were F. hepatica. In the 20 analyzed flukes, five ND1 haplotypes were detected. Statistically significant genetic differentiation was demonstrated between the Iran population and all the other populations. Evidence is presented for the existence of two well-separated populations: African and West Asian gigantica flukes and East Asian gigantica flukes.Genetic relationships among haplotypes were associated with geographical divisions. Also, our results have heightened our knowledge about the genetic diversity of F. gigantic, providing the first evidence for the existence of two well-separated populations of this parasite.

Keywords

Fasciola
Genotyping
Iran
Kermanshah
NADH dehydrogenase subunit 1

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Veterinary Research Forum
Volume 11, Issue 3
Summer 2020
Pages 265-271

  • Receive Date 27 November 2018
  • Revise Date 03 April 2019
  • Accept Date 17 April 2019

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