巴西东北部半干旱地区绵羊和山羊的流产与锥虫 vivax 的先天传播。

Abortion and congenital transmission of Trypanosoma vivax in goats and ewes in semiarid northeastern Brazil.

机构信息

Department of Animal Sciences, Center for Agricultural Sciences, Federal Rural University of the Semiarid, 59625-900 Mossoró, Rio Grande do Norte, Brazil.

Center for Biological and Health Sciences, Federal Rural University of the Semiarid, 59625-900 Mossoró, Rio Grande do Norte, Brazil.

出版信息

Res Vet Sci. 2022 Dec;149:125-127. doi: 10.1016/j.rvsc.2022.06.009. Epub 2022 Jun 24.

DOI:10.1016/j.rvsc.2022.06.009

PMID:35779347

Abstract

The main effects of trypanosomosis in Brazil are related to reproductive alterations. In this context, the present study aimed to report the occurrence of abortions in goats and sheeps in the semiarid region of Northeastern Brazil, associated with Trypanosoma vivax. Trypomastigotes forms visualized by Buffy coat technique (BCT) method in 68.7% of the goats and 50.0% of the ewes that aborted. PCR identified that 100% of the goats and ewes that aborted were infected with T. vivax. The goats and ewes that aborted showed high parasitemia and developed clinical signs of trypanosomosis. The presence of T. vivax DNA was identified in the blood of fetuses by the PCR technique, proving infection by T. vivax in aborted fetuses, as well as confirming the congenital transmission of the parasite.

摘要

在巴西，锥虫病的主要影响与生殖系统改变有关。在此背景下，本研究旨在报告与克氏锥虫相关的巴西东北部半干旱地区山羊和绵羊流产的发生情况。通过血涂片技术（BCT）在 68.7%的流产山羊和 50.0%的流产母羊中观察到锥虫的动基体期。PCR 鉴定表明，100%的流产山羊和母羊感染了克氏锥虫。流产的山羊和母羊出现了高寄生虫血症，并表现出锥虫病的临床症状。通过 PCR 技术在流产胎儿的血液中检测到克氏锥虫的 DNA，证明流产胎儿感染了克氏锥虫，也证实了寄生虫的先天性传播。