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加蓬啮齿动物杯状病毒和星状病毒的调查:国家和国际贸易对肠道病毒传播的可能影响。

Investigation of caliciviruses and astroviruses in Gabonese rodents: A possible influence of national and international trade on the spread of enteric viruses.

机构信息

Unité de Recherche en Écologie de la Santé (URES), Centre Interdisciplinaire de Recherches Médicales de Franceville (CIRMF), Franceville, BP 769, Gabon; Ecole Doctorale Régionale d'Afrique Centrale en Infectiologie Tropicale (EDR), Franceville, BP 876, Gabon.

Unité Émergence des Maladies Virales, Centre Interdisciplinaire de Recherches Médicales de Franceville (CIRMF), Franceville, Gabon; Institut de Recherche pour le Développement (IRD), Maladies Infectieuses et Vecteurs, Écologie, Génétique, Évolution et Contrôle (MIVEGEC) (Université de Montpellier-IRD 224-CNRS 5290), Montpellier 34394, France.

出版信息

Infect Genet Evol. 2024 Aug;122:105607. doi: 10.1016/j.meegid.2024.105607. Epub 2024 May 26.

Abstract

Caliciviruses (Caliciviridae) and astroviruses (Astroviridae) are among the leading cause of non-bacterial foodborne disease and gastroenteritis in human. These non-enveloped RNA viruses infect a wide range of vertebrate species including rodents. Rodents are among the most important hosts of infectious diseases globally and are responsible for over 80 zoonotic pathogens that affect humans. Therefore, screening pathogens in rodents will be is necessary to prevent cross-species transmission to prevent zoonotic outbreaks. In the present study, we screened caliciviruses and astroviruses in order to describe their diversity and whether they harbor strains that can infect humans. RNA was then extracted from intestine samples of 245 rodents and retrotranscribed in cDNA to screen caliciviruses and astroviruses by PCRs. All the samples tested negative for caliciviruses and while astroviruses were detected in 18 (7.3%) samples of Rattus rattus species. Phylogenetic analyses based on the RdRp gene showed that all the sequences belonged to Mamastrovirus genus in which they were genetically related to R. rattus related AstVs previously detected in Gabon or in Rattus spp. AstV from Kenya and Asia. These findings suggested that transportation such as land and railway, as well national and international trade, are likely to facilitate spread of AstVs by the dissemination of rodents.

摘要

杯状病毒科(Caliciviridae)和星状病毒科(Astroviridae)是导致人类非细菌性食源性疾病和胃肠炎的主要病原体之一。这些无包膜的 RNA 病毒感染范围广泛,包括各种脊椎动物,包括啮齿动物。啮齿动物是全球最重要的传染病宿主之一,它们是 80 多种影响人类的人畜共患病病原体的来源。因此,对啮齿动物中的病原体进行筛查对于防止跨物种传播和预防人畜共患疫情至关重要。在本研究中,我们对杯状病毒和星状病毒进行了筛查,以描述它们的多样性以及它们是否携带可感染人类的毒株。然后从 245 只啮齿动物的肠道样本中提取 RNA,并反转录为 cDNA,通过 PCR 检测杯状病毒和星状病毒。所有样本均检测为阴性,未检测到杯状病毒,但在 18 种(7.3%)拉氏巨鼠(Rattus rattus)样本中检测到星状病毒。基于 RdRp 基因的系统发育分析表明,所有序列均属于 Mamastrovirus 属,它们在遗传上与先前在加蓬或肯尼亚和亚洲的拉氏巨鼠相关的星状病毒相关。这些发现表明,运输(如陆地和铁路)以及国内外贸易可能会通过啮齿动物的传播促进星状病毒的传播。

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