Molecular epidemiology of Enterocytozoon bieneusi from foxes and raccoon dogs in the Henan and Hebei provinces in China.

Publisher: BioMed Central Country of Publication: England NLM ID: 101249759 Publication Model: Electronic Cited Medium: Internet ISSN: 1746-6148 (Electronic) Linking ISSN: 17466148 NLM ISO Abbreviation: BMC Vet Res Subsets: MEDLINE

Original Publication: London : BioMed Central, 2005-

Enterocytozoon*/genetics ; Microsporidiosis*/epidemiology ; Microsporidiosis*/veterinary; Humans ; Animals ; Multilocus Sequence Typing/veterinary ; Foxes/genetics ; Raccoon Dogs ; Molecular Epidemiology ; Feces ; Prevalence ; Phylogeny ; China/epidemiology ; Genotype

Background: Enterocytozoon bieneusi is a zoonotic pathogen widely distributed in animals and humans. It can cause diarrhea and even death in immunocompromised hosts. Approximately 800 internal transcribed spacer (ITS) genotypes have been identified in E. bieneusi. Farmed foxes and raccoon dogs are closely associated to humans and might be the reservoir of E. bieneusi which is known to have zoonotic potential. However, there are only a few studies about E. bieneusi genotype identification and epidemiological survey in foxes and raccoon dogs in Henan and Hebei province. Thus, the present study investigated the infection rates and genotypes of E. bieneusi in farmed foxes and raccoon dogs in the Henan and Hebei provinces.
Result: A total of 704 and 884 fecal specimens were collected from foxes and raccoon dogs, respectively. Nested PCR was conducted based on ITS of ribosomal RNA (rRNA), and then multilocus sequence typing (MLST) was conducted to analyze the genotypes. The result showed that infection rates of E. bieneusi in foxes and raccoon dogs were 18.32% and 5.54%, respectively. Ten E. bieneusi genotypes with zoonotic potential (NCF2, NCF3, D, EbpC, CHN-DC1, SCF2, CHN-F1, Type IV, BEB4, and BEB6) were identified in foxes and raccoon dogs. Totally 178 ITS-positive DNA specimens were identified from foxes and raccoon dogs and these specimens were then subjected to MLST analysis. In the MLST analysis, 12, 2, 7 and 8 genotypes were identified in at the mini-/ micro-satellite loci MS1, MS3, MS4 and MS7, respectively. A total of 14 multilocus genotypes were generated using ClustalX 2.1 software. Overall, the present study evaluated the infection of E. bieneusi in foxes and raccoon dogs in the Henan and Hebei province, and investigated the zoonotic potential of the E. bieneusi in foxes and raccoon dogs.
Conclusions: These findings expand the geographic distribution information of E. bieneusi' host in China and was helpful in preventing against the infection of E. bieneusi with zoonotic potential in foxes and raccoon dogs.
(© 2024. The Author(s).)

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Keywords: Enterocytozoon Bieneusi; Foxes; Genotypes; Multilocus analysis; Raccoon dogs

Date Created: 20240210 Date Completed: 20240214 Latest Revision: 20240214

20240214

PMC10858577

10.1186/s12917-024-03883-6

38341563