Molecular Evidence of Bartonella spp. in Rodents: A Study in Pianosa Island, Italy

Autor: Sara Divari, Paola Pregel, Stefania Zanet, Ezio Ferroglio, Francesca Giannini, Frine Eleonora Scaglione, Alex Grinberg, Bartolomeo Biolatti, Enrico Bollo
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Animals, Vol 10, Iss 11, p 2070 (2020)
Druh dokumentu: article
ISSN: 2076-2615
DOI: 10.3390/ani10112070
Popis: Wild rodents are reservoirs of several Bartonella species that cause human bartonellosis. The aim of this study was to assess the presence of Bartonella spp. DNA in wild rodents in Pianosa island, Italy. Rats (Rattus spp.; n = 15) and field mice (Apodemus spp.; n = 16) were captured and spleen DNA tested for the presence of Bartonella spp. by means of an initial screening using a qPCR amplifying a short segment of the 16S-23S rRNA gene intergenic transcribed spacer region (ITS, ~200 bp) followed by conventional PCR amplification of a longer ITS fragment (~600 bp) and of a citrate synthase (gltA, ~340 bp) gene segment. A total of 25 spleen DNA samples obtained from 31 rodent carcasses (81%) yielded positive qPCR results. Bartonella genus was confirmed by amplicon sequencing. By conventional PCR, eight out of 25 samples (32%) yielded bands on gels consistent with ITS segment, and 6/25 (24%) yielded bands consistent with the gltA locus. Amplicon sequencing identified B. henselae and B. coopersplainsensis in 1/25 (4%), and 4/25 (16%) samples, respectively. Moreover, 5/25 (20%) of Bartonella spp. positive samples showed gltA sequences with about 97% identity to B. grahamii. These results provide support to recently published observations suggesting that B. henselae circulates in wild rodent populations.
Databáze: Directory of Open Access Journals
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