Iranian Journal of Parasitology 2017. 12(2):243-250.

Molecular Determination of Fasciola Spp. Isolates from Domestic Ruminants Fecal Samples in the Northwest of Iran
Abbas IMANI BARAN, Habib CHERAGHI SARAY, Farzad KATIRAEE

Abstract


Background: Fasciola species are the main causes for fascioliasis with great financial losses and are among the most important food/water-borne parasites worldwide. The basic proceedings such as epidemiology and effective control of fascioliasis rely mainly on precise identification of Fasciola species. The present study was conducted to determine the Fasciola species in ruminant fecal samples from East Azerbaijan Province in Iran.

Methods: Overall, 2012 fecal samples were collected and processed initially for microscopic examination of Fasciola eggs in 2014-15. Then, recovered eggs were subjected to molecular identification. A fragment of 618 bp of the 28S rRNA gene pertaining to Fasciola genus was amplified under PCR. The amplified fragment was restricted by fast digest Ava II enzyme in order to a Restriction Fragment Length Polymorphism.

Results: Based on microscopic examination, 72 samples were infected, from which, 10 and 62 cases pertained to cattle and sheep samples respectively. Based on RFLP, the PCR products restricted by the Ava II restriction enzyme produced 529 bp fragments only. According to the positive controls, all restriction patterns were related to Fasciola hepatica, while no restriction patterns were linked to F. gigantica.

Conclusion: Based on PCR-RFLP, F. hepatica was dominant species in animals of the studied areas and no evidence of F. gigantica was observed. Therefore, further field studies to verify these results are suggested.

Keywords


Fasciola; Egg; Ruminant; PCR-RFLP; Iran

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References


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