DETERMINATION AND SEQUENCING OF GENOTYPES OF ECHINOCOCCUS GRANULOSUS FROM STRAY DOGS ISOLATES WITH COX1 GEN IN ILAM, WEST OF IRAN

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SHAMSI M.; DALIMI A.; KHOSRAVI A.; GHAFARIFAR F.; POURAHMAD F.

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Journal: Journal of Ilam University of Medical Sciences Year:2017 | Volume:24 | Issue:6 Page(s): 97-106

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Title

DETERMINATION AND SEQUENCING OF GENOTYPES OF ECHINOCOCCUS GRANULOSUS FROM STRAY DOGS ISOLATES WITH COX1 GEN IN ILAM, WEST OF IRAN

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Keywords

ECHINOCOCCUS GRANULOSUSQ1

GENOTYPESQ2

PCR-RFLPQ1

SEQUENCINGQ1

ILAMQ2

Abstract

Introduction: Hydatidosisis one of the most common diseases of human and animals from Cestoda class with worldwide distribution. This disease of both public health and economic damage is very important. This parasite has a high genetic diversity and includes a complex of different GENOTYPES .Usually in areas where disease is endemic; biologically there is a relatively high genetic diversity in parasites. Studies in different parts of the world demonstrate that genotype variation and the nature of ECHINOCOCCUS GRANULOSUS influenced on the life cycle of parasite, transmission routes, pathogenesis, and antigenicity, immunogenicity, response to medication, epidemiology and control of the disease. The main aim of the present study was to investigate genotype diversity of E. granulosus which was isolated from stray dogs in ILAM city, West of IranMaterials & methods: Adult worms were collected from the small intestine of the stray dogs. DNA was extracted from the adult worms and the partial mitochondrial DNA Cytochrome Oxidasesubunit 1 (Cox1) was amplified by PCR then the products were digested by using Alu1 and HpaII restriction enzymes. Finally, a number of PCR products were bidirectionally sequenced. Sequence and phylogenetic analyses were performed using MEGA6 (Mega software. Net).Findings: Totally, twenty stray dogs out of 75 (26.66%) showed infection with E. granulosus. Amplified PCR product for all isolates was a band of approximately 450bp. Alu1 digested the product into two bands of approximately 175bp and 275bp fragments, while the HpaII cut the product into 265bp and 185bp fragments for all dog samples. Based on the DNA SEQUENCING and PCR-RFLP results, dog samples indicated to pertain the genotypic similarities. According to the phylogenetic tree, there is at least one genotype of parasite, which belongs to E. granulosous sensu stricto (G1–G3) complex and overall isolates sequences of mtDNA indicated 100 % homology with references G1, G2, and G3 sequences in the GenBank database.Discussion & conclusions: The results of this study indicated that genotypic similarities between the sizes of DNA bands of E. granulosus from all isolates with PCR-RFLP and SEQUENCING methods indicated the occurrence of similarities GENOTYPES of E.granulosus in ILAM region. There is at least one genotype of parasite, which belongs to E. granulosous sensu stricto(G1-G3) complex.

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APA: Copy

SHAMSI, M., DALIMI, A., KHOSRAVI, A., GHAFARIFAR, F., & POURAHMAD, F.. (2017). DETERMINATION AND SEQUENCING OF GENOTYPES OF ECHINOCOCCUS GRANULOSUS FROM STRAY DOGS ISOLATES WITH COX1 GEN IN ILAM, WEST OF IRAN. JOURNAL OF ILAM UNIVERSITY OF MEDICAL SCIENCES, 24(6), 97-106. SID. https://sid.ir/paper/90339/en

Vancouver: Copy

SHAMSI M., DALIMI A., KHOSRAVI A., GHAFARIFAR F., POURAHMAD F.. DETERMINATION AND SEQUENCING OF GENOTYPES OF ECHINOCOCCUS GRANULOSUS FROM STRAY DOGS ISOLATES WITH COX1 GEN IN ILAM, WEST OF IRAN. JOURNAL OF ILAM UNIVERSITY OF MEDICAL SCIENCES[Internet]. 2017;24(6):97-106. Available from: https://sid.ir/paper/90339/en

IEEE: Copy

M. SHAMSI, A. DALIMI, A. KHOSRAVI, F. GHAFARIFAR, and F. POURAHMAD, “DETERMINATION AND SEQUENCING OF GENOTYPES OF ECHINOCOCCUS GRANULOSUS FROM STRAY DOGS ISOLATES WITH COX1 GEN IN ILAM, WEST OF IRAN,” JOURNAL OF ILAM UNIVERSITY OF MEDICAL SCIENCES, vol. 24, no. 6, pp. 97–106, 2017, [Online]. Available: https://sid.ir/paper/90339/en

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