Sub-Department of Parasitology and Invasive Diseases, Veterinary Faculty, University of Life Sciences, 20-950 Lublin, Poland.
Institute of Parasitology, Justus Liebig University Giessen, 35392 Giessen, Germany.
Vet Parasitol Reg Stud Reports. 2020 Dec;22:100486. doi: 10.1016/j.vprsr.2020.100486. Epub 2020 Nov 4.
A cross-sectional survey was performed to obtain first information on the prevalence of Echinococcus multilocularis infection in slaughter horses from central, eastern and southern Poland, a country with a highly endemic occurrence of this tapeworm in red foxes. White tough nodular lesions being 3-10 mm in size, sharply demarcated and spherically or irregularly shaped were found in 54 of 365 livers examined. Histologically, focal granulomatous necrotizing inflammations and sometimes PAS-positive acellular lamellar structures being characteristic of the E. multilocularis metacestode stage were visible; protoscoleces were not found. E. multilocularis DNA was detected in six of 19 hepatic lesions examined by nested PCR. Our results from molecular and morphological diagnostics suggest an overall prevalence of alveolar echinococcosis between 4.7% and 14.8% in the horse population studied. Horses as dead-end hosts do not play any role in the life cycle of E. multilocularis but may serve as additional sentinel animals in monitoring the environmental contamination with tapeworm eggs.
本研究采用横断面调查方法，对波兰中部、东部和南部屠宰马群中细粒棘球绦虫（Echinococcus multilocularis）感染的流行情况进行了首次调查。波兰是狐狸中细粒棘球绦虫高度流行的国家，本研究旨在获得相关信息。在 365 个肝脏样本中，发现 54 个样本中存在 3-10 毫米大小、界限分明、球形或不规则形状的白色坚韧小结节病变。组织学检查可见局灶性肉芽肿性坏死性炎症，有时可见 PAS 阳性的无细胞板层结构，这些特征符合细粒棘球绦虫中绦期；未发现原头蚴。巢式 PCR 检测 19 个肝病变样本中的 6 个样本中检测到细粒棘球绦虫 DNA。分子和形态学诊断结果表明，在所研究的马群中，泡型包虫病的总流行率在 4.7%至 14.8%之间。马作为终末宿主，在细粒棘球绦虫的生活史中不起任何作用，但可以作为监测环境中绦虫卵污染的额外哨兵动物。
