Trypanosoma evansi in Brazil: first evidence of infection in equines from Northeast region.

IF 1.3 4区 农林科学 Q2 Veterinary
Revista Brasileira De Parasitologia Veterinaria Pub Date : 2025-06-20 eCollection Date: 2025-01-01 DOI:10.1590/S1984-29612025032
Jordeano Araujo Sousa, Leandro Macedo Miranda, Danielle Jordany Barros Coutinho, Thaliane França Costa, Sidilene Pereira Costa, Úrsula Silva Freitas, Francisco Borges Costa, Rosangela Zacarias Machado, Rita de Maria Seabra Nogueira, Andréa Pereira da Costa
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引用次数: 0

Abstract

The hemoprotozoan Trypanosoma evansi is a parasite that infects mammals, causing an infection known as trypanosomiasis. There is no report of T. evansi in horses in the State of Maranhão, highlighting the need to assess exposure and infection by the parasite and generate data for its monitoring. The objectives of this study were to identify T. evansi in blood samples from horses, investigate its occurrence in horses in this region, and analyze the associated risk factors. Three hundred blood samples were collected for parasitological (blood smear), serological (indirect enzyme-linked immunosorbent assay - ELISA), and molecular (polymerase chain reaction - PCR) diagnostic purposes. No trypomastigote forms of T. evansi were observed in the examined blood smears. Serological examined of 209 samples revealed that 33.01% (69/209) were positive for anti-T. evansi antibodies. No variable was identified as a risk factor. Among the 300 samples submitted to PCR, 1% (3/300) were positive, and sequencing showed 100% similarity with T. evansi species. The study identified exposure and infection of horses by T. evansi in Maranhão, expanding its geographic distribution in the country and highlighting the importance of periodic testing.

巴西的伊文氏锥虫:东北地区马感染的首个证据。
伊文氏锥虫是一种感染哺乳动物的寄生虫,引起一种被称为锥虫病的感染。马兰赫州没有关于马中出现伊瓦西弓形虫的报告,这突出表明有必要评估该寄生虫的暴露和感染,并为其监测生成数据。本研究的目的是鉴定马血液样本中的伊凡斯绦虫,调查其在该地区马中的发生情况,并分析相关危险因素。收集了300份血样用于寄生虫学(血液涂片)、血清学(间接酶联免疫吸附试验- ELISA)和分子(聚合酶链反应- PCR)诊断目的。在检查的血涂片中未观察到伊文氏锥乳虫。血清学检测结果显示,33.01%(69/209)的样本抗t阳性。evansi抗体。没有任何变量被确定为危险因素。300份样本中有1%(3/300)为阳性,测序结果显示与伊文氏体的相似性为100%。该研究确定了马兰赫马接触和感染伊凡斯绦虫,扩大了其在该国的地理分布,并强调了定期检测的重要性。
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来源期刊
Revista Brasileira De Parasitologia Veterinaria
Revista Brasileira De Parasitologia Veterinaria PARASITOLOGY-VETERINARY SCIENCES
CiteScore
2.60
自引率
7.70%
发文量
90
审稿时长
>12 weeks
期刊介绍: La revista es un órgano de difusión del Colegio Brasileño de Parasitología Veterinaria, con una especificidad dentro de esa área, la difusión de los resultados de la investigación brasileña en las áreas de Helmintología, Protozoología, Entomología y agentes transmitidos por artrópodos, relacionados con la salud animal.
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