Sigmodontinae rodents as potential reservoirs for Borrelia burgdorferi sensu lato in the Delta and Paraná Islands ecoregion, Argentina.

IF 1.6 3区 农林科学 Q2 ENTOMOLOGY
Johann Barolin, Leandro Raul Antoniazzi, Valeria Carolina Colombo, Pablo Martin Beldomenico, Lucas Daniel Monje
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Abstract

The Borrelia burgdorferi sensu lato (s.l.) complex includes a group of spirochete bacteria that are involved in transmission cycles with vertebrates and the ticks associated with them. Rodents play an essential role in the ecoepidemiology of Borrelia, acting as reservoirs for the bacteria and hosts for ticks. To identify potential reservoir vertebrate hosts of Borrelia spirochetes in Argentina, we conducted molecular analyses on tissues obtained from a population of Sigmodontinae rodents inhabiting the Delta and Parana Islands ecoregion. We report the presence of B. burgdorferi s.l. complex genotypes infecting Akodon azarae and Oxymycterus rufus in this ecoregion. Phylogenetic analysis revealed at least three flaB haplotypes related to 'Candidatus Borrelia paulista' and Borrelia sp. strain Pampa from Brazil and to several Borrelia haplotypes from Uruguay. Additionally, we identified different alleles of the plasmid-borne gene ospC in B. burgdorferi s.l. infecting A. azarae and Ox. rufus. The ospC allele present in Borrelia from Ox. rufus was also detected in Borrelia from Oligoryzomys mattogrossae, indicating the ability of Borrelia harbouring this ospC allele to infect multiple Sigmodontinae species, whereas the ospC allele from Borrelia infecting A. azarae represents a novel variant. Further research is needed to determine host specificity of ospC alleles present in South America.

在阿根廷三角洲和巴拉那群岛生态区,啮齿类动物Sigmodontinae可能是勃氏包柔氏菌的潜在宿主。
勃氏包柔氏菌(Borrelia burgdorferi sensu lato,s.l.)复合体包括一组螺旋体细菌,它们与脊椎动物及与其相关的蜱虫一起参与传播循环。啮齿动物在包柔氏病的生态流行病学中扮演着至关重要的角色,既是细菌的储库,也是蜱虫的宿主。为了确定阿根廷潜在的包柔氏螺旋体脊椎动物宿主,我们对栖息在三角洲和巴拉那群岛生态区的 Sigmodontinae 啮齿动物群体的组织进行了分子分析。我们报告了该生态区域存在感染 Akodon azarae 和 Oxymycterus rufus 的 B. burgdorferi s.l. 复合基因型。系统发育分析显示,至少有三种 flaB 单倍型与巴西的 "Candidatus Borrelia paulista "和 Borrelia sp.此外,我们还在感染 A. azarae 和 Ox. rufus 的 B. burgdorferi s.l. 中发现了质粒携带基因 ospC 的不同等位基因。在来自Ox. rufus的鲍曼不动杆菌中存在的ospC等位基因在来自Oligoryzomys mattogrossae的鲍曼不动杆菌中也被检测到,这表明携带这种ospC等位基因的鲍曼不动杆菌能够感染多种Sigmodontinae物种,而感染A. azarae的鲍曼不动杆菌中的ospC等位基因是一种新的变体。要确定南美洲存在的ospC等位基因的宿主特异性,还需要进一步的研究。
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来源期刊
Medical and Veterinary Entomology
Medical and Veterinary Entomology 农林科学-昆虫学
CiteScore
3.70
自引率
5.30%
发文量
65
审稿时长
12-24 weeks
期刊介绍: Medical and Veterinary Entomology is the leading periodical in its field. The Journal covers the biology and control of insects, ticks, mites and other arthropods of medical and veterinary importance. The main strengths of the Journal lie in the fields of: -epidemiology and transmission of vector-borne pathogens changes in vector distribution that have impact on the pathogen transmission- arthropod behaviour and ecology- novel, field evaluated, approaches to biological and chemical control methods- host arthropod interactions. Please note that we do not consider submissions in forensic entomology.
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