School of Veterinary Medicine (SVM), Faculty of Medical Sciences, The University of the West Indies (UWI), Champs Fleurs, Trinidad and Tobago.
Veterinary Teaching Hospital, North Central Regional Health Authority, Eric Williams Medical Sciences Complex, Champs Fleurs, Trinidad and Tobago.
Vet Parasitol Reg Stud Reports. 2023 Jul;42:100896. doi: 10.1016/j.vprsr.2023.100896. Epub 2023 May 29.
A 3-year-old, female, domestic shorthair cat, was presented to the Veterinary Teaching Hospital at the School of Veterinary Medicine (SVM), Trinidad and Tobago for a swollen nose, and multiple, variably sized small masses on both ears. The initial diagnostic tests included a CBC, serum biochemistry profile, cytological evaluation of masses on the ear and nose, and FeLV/FIV testing. The CBC and biochemistry results were unremarkable except for a hyperproteinaemia and hyperglobulinemia. Cytology of the nose and ear lesions revealed mixed inflammation and high numbers of intracellular and extracellular organisms consistent with Leishmania amastigotes. The cat was FeLV/FIV negative. Histopathology and Leishmania IFA and PCR analysis were subsequently performed, confirming the Leishmania diagnosis. The PCR, DNA sequencing and phylogenetic tree analyses identified L. amazonensis. This is the first reported case of L. amazonensis infection in a domestic animal in Trinidad with molecular characterization indicating it exists in the region and is likely being transmitted by sandflies.
一只 3 岁雌性家短毛猫,因鼻子肿胀和双耳有多个大小不一的小肿块,到特立尼达和多巴哥兽医学院兽医教学医院就诊。初步诊断测试包括全血细胞计数、血清生化分析、耳部和鼻部肿块的细胞学评估以及 FeLV/FIV 检测。除了高球蛋白血症外,全血细胞计数和生化结果无明显异常。鼻和耳部病变的细胞学检查显示混合性炎症和大量细胞内和细胞外生物,符合利什曼原虫无鞭毛体。猫 FeLV/FIV 检测为阴性。随后进行了组织病理学、利什曼间接免疫荧光和 PCR 分析,证实了利什曼病的诊断。PCR、DNA 测序和系统发育树分析鉴定出 L. amazonensis。这是特立尼达首例家犬感染 L. amazonensis 的报道,分子特征表明该地区存在这种寄生虫,并且可能通过沙蝇传播。
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