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首页> 外文期刊>Journal of Parasitology >INFECTION BY TRYPANOSOMES IN MARSUPIALS AND RODENTS ASSOCIATED WITH HUMAN DWELLINGS IN ECUADOR
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INFECTION BY TRYPANOSOMES IN MARSUPIALS AND RODENTS ASSOCIATED WITH HUMAN DWELLINGS IN ECUADOR

机译：锥虫在厄瓜多尔与人类住所有关的公猪和马齿RO中的感染

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摘要

Small mammals trapped in domestic and peridomestic environments of rural Ecuador were screened for trypanosome infection by direct microscopy and hemoculture. Identification of species of trypanosomes was then performed by morphological characteristics and by polymerase chain reaction (PCR) assays. Of 194 animals collected, 15 were positive for infection (7.73%). Eight (4.12%) were infected with Trypanosoma cruzi (1 of 33 Didelphis marsupialis; 7 of 61 Rattus rattus). Eleven R. rattus (18.03%) harbored T. lewisi, 5 of which presented mixed infections with T. cruzi. Additionally, 1 of 3 Oryzomys xanthaeolus was infected with T. rangeli. No trypanosome infection was detected in Philander opossum (n = 1), Mus musculus (n = 79), Rattus norvegicus (n = 8), Akodon orophilus (n = 4), Sigmodon peruanus (n = 3), or Proechimys decumanus (n = 2). Many of the isolates belong to T. cruzi, the causative agent of Chagas disease, and R. rattus had the highest prevalence. Because of its abundance in the study areas, this species is considered an important reservoir for Chagas disease. This is the first report of T. lewisi and T. rangeli in Ecuador. This study is also the first to describe natural mixed infections of T. cruzi–T. lewisi.
机译：通过直接显微镜检查和血液培养筛选了被困在厄瓜多尔农村的家庭和围场环境中的小型哺乳动物的锥虫感染。然后通过形态特征和聚合酶链反应（PCR）分析法进行锥虫体物种的鉴定。在收集的194只动物中，有15例感染呈阳性（7.73％）。八名（4.12％）感染了克氏锥虫（33只Didelphis marsupialis中的1只； 61只Rattus rattus中的7只）。十一只R. rattus（18.03％）隐匿了T. lewisi，其中5个呈现出克鲁氏梭菌的混合感染。此外，3个Oryzomys xanthaeolus中的1个被T.rangeli感染。在负鼠（n = 1），小家鼠（n = 79），褐家鼠（n = 8），Akodon orophilus（n = 4），Sigmodon peruanus（n = 3）或Proechimys decumanus（）中未检出锥虫感染n = 2）。许多分离株属于恰加斯氏病的致病病原体克鲁维斯氏菌，而R. rattus的患病率最高。由于其在研究区的丰富性，该物种被认为是南美锥虫病的重要储藏地。这是T. lewisi和T.rangeli在厄瓜多尔的首次报道。这项研究也是第一个描述克鲁氏锥虫自然混合感染的研究。刘易斯。

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