Infection rate and genetic diversity of Giardia duodenalis in pet and stray dogs in Henan Province, China

文献类型： 外文期刊

第一作者： Qi, Meng

作者： Qi, Meng;Dong, Haiju;Luo, Jianxun;Qi, Meng;Dong, Haiju;Wang, Rongjun;Li, Junqiang;Zhao, Jinfeng;Zhang, Longxian;Qi, Meng

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关键词： Giardia duodenalis;Infection rate;Genetic diversity;Dogs

期刊名称：PARASITOLOGY INTERNATIONAL （ 影响因子：2.23； 五年影响因子：2.281 ）

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收录情况： SCI

摘要： Giardia duodenalis is an important protozoan parasite that is known to be zoonotic. To assess the potential zoonotic transmission of giardiasis from dogs and to identify genetic diversity of G. duodenalis in dog populations, we examined the infection rate and genotypes of G. duodenalis in both pet dogs (from pet dog farms, pet shops, pet hospitals, pet markets) and stray dogs of different ages in Henan Province, China. A total of 940 fresh fecal specimens were collected from 2007 to 2013 in Henan Province. The overall infection rate of G. duodenalis was 143% (134/940) as determined by microscopy, with the highest infection rate (17.3%) observed in dogs from shelters. Young dogs were more likely to be infected with G. duodenalis than adult dogs, and G. duodenalis cysts were found more frequently in diarrheic dogs. All G. duodenalis-positive isolates were characterized at the triose phosphate isomerase (tpi), glutamate dehydrogenase (gdh), and beta-giardin (bg) loci, and 37, 51, and 48 sequences were obtained, respectively. The dog-specific assemblages C and D were identified using multi-locus sequence analysis. Six novel sequences of the tpi locus, one novel sequence of the gdh locus and two novel sequences of the bg locus were detected among the G. duodenalis assemblage C isolates, while two novel sequences of the gdh locus were found among the G. duodenalis assemblage D isolates. Our data indicate that G. duodenalis is a common parasite and cause of diarrheal disease in dogs in Henan Province. However, there was no evidence for zoonotic G. duodenalis assemblages in the study population. (C) 2015 Elsevier Ireland Ltd. All rights reserved.

分类号： Q18

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