Molecular epidemiological investigation of Cryptococcus spp. isolated from cats in Japan using multi-locus sequence typing.

Autor:	Omura M; Laboratory of Medical Mycology, Graduate School of Medicine, Teikyo University, Tokyo, Japan., Komori A; Institute of Medical Mycology, Teikyo University, Tokyo, Japan., Tamura T; Institute of Medical Mycology, Teikyo University, Tokyo, Japan., Han HS; CityU Veterinary Medical Centre, Sham Shui Po, Hong Kong., Kano R; Institute of Medical Mycology, Teikyo University, Tokyo, Japan., Makimura K; Laboratory of Medical Mycology, Graduate School of Medicine, Teikyo University, Tokyo, Japan.; Institute of Medical Mycology, Teikyo University, Tokyo, Japan.
Jazyk:	angličtina
Zdroj:	Medical mycology [Med Mycol] 2024 Aug 02; Vol. 62 (8).
DOI:	10.1093/mmy/myae085
Abstrakt:	Cryptococcosis is an important fungal infection for both humans and cats, but molecular epidemiological studies on strains isolated from cats are limited. We conducted multi-locus sequence typing analysis and antifungal susceptibility testing of 14 Cryptococcus spp. strains from domestic cats in Japan and one strain isolated from a cat in Singapore. All 14 strains from domestic cats in Japan were identified as Cryptococcus neoformans molecular type VNI. The sequence types (STs) included eight cases of ST5, five cases of ST31, and one novel ST. VNI ST5 is the most frequently isolated strain in Japanese patients as well, while there are no records of VNI ST31 being isolated from Japanese patients. The Singaporean cat strain was identified as C. gattii VGIIb (C. deuterogattii), ST7. We compared these results with strains previously reported to have been isolated from cats. This comparison suggested that molecular types of Cryptococcus spp. isolated from cats may differ depending on the country. In the antifungal susceptibility testing of C. neoformans, one strain each exceeded the epidemiological cutoff value (ECV) for amphotericin B and 5-fluorocytosine, while two strains exceeded the ECV for fluconazole. This study reveals the molecular epidemiology of Cryptococcus spp. isolated from cats with cryptococcosis in Japan. It suggests that investigating Cryptococcus spp. carried by cats, which share close living environments with humans, may contribute to the health of both cats and human populations. (© The Author(s) 2024. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology.)
Databáze:	MEDLINE
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