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Molecular Characterization of Fasciola Spp. From Some Parts of Iran



Hasanpour H1, 2 ; Falak R3 ; Naddaf SR4 ; Mascoma S5 ; Rokni MB1 ; Badirzadeh A6 ; Mokhtarian K7 ; Mohebali M1 ; Jafarpour Azami S1 ; Fadavi A1 ; Gharagozlou MJ8 ; Mohammad K1 ; Mowlavi G1
Authors
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Authors Affiliations
  1. 1. Department of Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Department of Parasitology, Faculty of Medicine, Ilam University of Medical Sciences, Ilam, Iran
  3. 3. Immunology Research Center, Iran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Parasitology, Pasteur Institute of Iran, Tehran, Iran
  5. 5. Department of Parasitology, Faculty of Pharmacy, University of Valencia, Valencia, Spain
  6. 6. Department of Parasitology and Mycology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
  7. 7. Department of Parasitology and Mycology, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
  8. 8. Department of Pathobiology, School of Veterinary Medicine, University of Tehran, Tehran, Iran

Source: Iranian Journal of Public Health Published:2020

Abstract

Background: Identification of liver flukes, Fasciola hepatica, and Fasciola gigantica by morphometric parameters is not always reliable due to the overlapping measurements. This study aimed to characterize the liver flukes of animals from different parts of Iran by the genetic markers, ITS1, and COXI. Methods: We collected flukes from infected livestock in six provinces of Iran from Sep to Nov 2016. The flukes were identified by amplification of a 680 bp sequence of ITS1 locus followed by a restriction fragment polymor-phism (RFLP) assay. The genetic diversity among isolates was evaluated by amplification and sequencing of a 493 bp fragment of the COXI gene. Results: We obtained 38 specimens from Khuzestan, 22 from Tehran, 10 from Isfahan, 10 from Mazandaran, 4 from Kurdistan, and 3 from Ardabil provinces. PCR-RFLP analysis revealed two patterns, representing F. hepatica, and F. gigantica. Fifty specimens from cattle and sheep exhibited F. hepatica pattern and 37 from the cattle, sheep, buffalo, and goat that of F. gigantica. The phylogeny based on COXI revealed two distinct clades separating F. hepatica from F. gigantica. In our phylogeny, the Iranian F. gigantica isolates showed a distinct separation from the African flukes, while grouped with the East Asia specimens demonstrating a common ancestor. The F. hepatica isolates clustered with the flukes from different parts of the world, including East Asia, Europe, and South America. Conclusion: The present study revealed a substantial genetic difference between F. gigantica populations of Asia and Africa, while F. hepatica isolates from different parts of the world shared high similarities. © 2020, Iranian Journal of Public Health. All rights reserved.
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