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高海拔地区潜在致病性自由生活阿米巴:玻利维亚北部高原片形吸虫病高度流行区的多重定量聚合酶链反应检测

Potentially pathogenic free-living amoebae at very high altitude: Detection by multiplex qPCR in the Northern Altiplano fascioliasis hyperendemic area in Bolivia.

作者信息

Pérez-Pérez Patricia, Artigas Patricio, Reyes-Batlle María, Córdoba-Lanús Elizabeth, Rodríguez-Expósito Rubén L, Cuervo Pablo F, Domínguez-de-Barros Angélica, García-Pérez Omar, Valero M Adela, De Elías Alejandra, Anglés René, Mas-Coma Santiago, Piñero José E, Bargues M Dolores, Lorenzo-Morales Jacob

机构信息

Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias (IUETSPC), Universidad de La Laguna (ULL), San Cristóbal de La Laguna, Spain.

Departamento de Obstetricia y Ginecología, Pediatría, Medicina Preventiva y Salud Pública, Toxicología, Medicina Legal y Forense y Parasitología, Universidad de La Laguna, San Cristóbal de La Laguna, Spain.

出版信息

One Health. 2025 Feb 8;20:100985. doi: 10.1016/j.onehlt.2025.100985. eCollection 2025 Jun.

Abstract

Free-living amoebae (FLA), which are frequently found in the environment, include opportunistic pathogenic genera/species such as spp., , and . These pathogenic FLA are causative agents of amoebic encephalitis and keratitis in the case of genus and . In addition, amoebic infections are often related to contamination of domestic and recreational water sources. This study aimed to identify potentially pathogenic FLA in the hyperendemic area of human fascioliasis in a very-high-altitude area (3800-4100 m a.s.l.) of Bolivia and examine whether an association between both pathogens could be established from the environmental point of view. A total of 55 samples (28 soil and 27 water samples) were collected from various locations in the Northern Altiplano of Bolivia. Samples were processed by multiplex qPCR to detect the four pathogenic FLA genera/species. All samples were positive for the presence of , followed by spp. which was positive in 18 soil and 10 water samples. In contrast, was only detected in soil sources, whereas was not detected in any of the samples. The coexistence and diverse distribution of multiple FLA species in many locations at such a high altitude is worth mentioning and indicates a potential risk of coinfections. These findings suggest that FLA surveillance is a crucial factor to be considered when implementing preventive measures and improving public health in fascioliasis hyperendemic areas.

摘要

自由生活阿米巴(FLA)常见于环境中,包括一些机会致病属/种,如 属、 属、 属和 属。这些致病性自由生活阿米巴在 属和 属的情况下,是阿米巴性脑炎和角膜炎的病原体。此外,阿米巴感染通常与生活用水和娱乐用水水源的污染有关。本研究旨在确定玻利维亚高海拔地区(海拔3800 - 4100米)人体肝片吸虫病高度流行区中潜在致病的自由生活阿米巴,并从环境角度检查这两种病原体之间是否存在关联。从玻利维亚北部高原的不同地点共采集了55份样本(28份土壤样本和27份水样)。通过多重qPCR对样本进行处理,以检测四种致病性自由生活阿米巴属/种。所有样本中 属均呈阳性,其次是 属,在18份土壤样本和10份水样中呈阳性。相比之下, 属仅在土壤样本中检测到,而 属在任何样本中均未检测到。在如此高海拔的许多地点多种自由生活阿米巴物种的共存和多样分布值得一提,这表明存在共感染的潜在风险。这些发现表明自由生活阿米巴监测是在肝片吸虫病高度流行区实施预防措施和改善公共卫生时需要考虑的关键因素。

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