Molecular prevalence of Dirofilaria immitis and Wolbachia infections in pet and semi-domesticated cats in Bangkok, Thailand

Author:

Thengchaisri Naris1ORCID,Inpankaew Tawin2ORCID,Arthitwong Surapong3ORCID,Steiner Jörg M.4ORCID,Sattasathuchana Panpicha5ORCID

Affiliation:

1. Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand; Tippimarn Veterinary Hospital, Chulabhorn Royal Academy, 906/1 Pong Ta Long Subdistrict, Pak Chong district, Nakhon Ratchasima, 30130, Thailand.

2. Department of Parasitology, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand.

3. Department of Anatomy, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand.

4. Department of Small Animal Clinical Sciences, Gastrointestinal Laboratory, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, Texas, USA.

5. Department of Companion Animal Clinical Sciences, Faculty of Veterinary Medicine, Kasetsart University, Bangkok, Thailand.

Abstract

Background and Aim: Although cats are not natural hosts for heartworm infections (Dirofilaria immitis), evidence suggests that feline heartworm disease can be detrimental because of a severe inflammatory response. Recent studies have found that infection with bacteria of the genus Wolbachia is the principal cause of acute inflammatory filaria disease; nonetheless, the prevalence of cats naturally infected with heartworms and Wolbachia remains unclear. This study aimed to estimate the prevalence and current distribution of feline heartworm disease and its association with Wolbachia infection in pet and semi-domesticated cats in Bangkok, Thailand. Materials and Methods: A total of 260 cats (130 pet cats and 130 semi-domesticated cats) were enrolled in this study. Blood samples were placed into ethylenediaminetetraacetic acid tubes for hematological analysis and DNA extraction. A polymerase chain reaction (PCR) was performed to analyze samples for the presence of D. immitis and Wolbachia infections. Results: The prevalence (95% confidence interval [CI]) of D. immitis infection in pet, semi-domesticated, and all cats were 3.9% (1.3-8.8%), 27.7% (20.2-36.2%), and 19.6% (15.0-25.0%), respectively. The prevalence (95% CI) of Wolbachia infection in pet, semi-domesticated, and all cats were 18.5% (12.2-26.2%), 31.5% (23.7-40.3%), and 25.0% (19.9-30.7%), respectively. The prevalence of D. immitis and Wolbachia infections in semi-domesticated cats was significantly higher than in pet cats (p=0.002 and p=0.022, respectively). There was a significant association between D. immitis and Wolbachia infections (p<0.001). There was also a significant association between D. immitis infection and the presence of eosinophilia (p<0.045). Conclusion: From the PCR analysis, it can be concluded that semi-domesticated cats were at higher risk for D. immitis infection than pet cats. There was a significant association between positive D. immitis infection and positive Wolbachia infection. Combinations of anthelmintic and antimicrobial therapy should be considered in heartworm-positive cats.

Funder

Kasetsart University

Publisher

Veterinary World

Subject

General Veterinary

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Vector biology of the cat flea Ctenocephalides felis;Trends in Parasitology;2024-04

2. Special Topics from Asian Countries;Entomology Monographs;2024

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