Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.

Bartonella bacilliformis is the aetiological agent of human bartonellosis, a potentially life threatening infection of significant public health concern in the Andean region of South America. Human bartonellosis has long been recognised in the region but a recent upsurge in the number of cases of th...

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Main Authors: Gemma L Chaloner, Palmira Ventosilla, Richard J Birtles
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2011-07-01
Series:PLoS Neglected Tropical Diseases
Online Access:http://europepmc.org/articles/PMC3139668?pdf=render
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author Gemma L Chaloner
Palmira Ventosilla
Richard J Birtles
author_facet Gemma L Chaloner
Palmira Ventosilla
Richard J Birtles
author_sort Gemma L Chaloner
collection DOAJ
description Bartonella bacilliformis is the aetiological agent of human bartonellosis, a potentially life threatening infection of significant public health concern in the Andean region of South America. Human bartonellosis has long been recognised in the region but a recent upsurge in the number of cases of the disease and an apparent expansion of its geographical distribution have re-emphasized its contemporary medical importance. Here, we describe the development of a multi-locus sequence typing (MLST) scheme for B. bacilliformis and its application to an archive of 43 isolates collected from patients across Peru. MLST identified eight sequence types among these isolates and the delineation of these was generally congruent with those of the previously described typing scheme. Phylogenetic analysis based on concatenated sequence data derived from MLST loci revealed that seven of the eight sequence types were closely related to one another; however, one sequence type, ST8, exhibited profound evolutionary divergence from the others. The extent of this divergence was akin to that observed between other members of the Bartonella genus, suggesting that ST8 strains may be better considered as members of a novel Bartonella genospecies.
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spelling doaj.art-87e10a2c5e694045bc1dc588f930118e2022-12-21T22:48:55ZengPublic Library of Science (PLoS)PLoS Neglected Tropical Diseases1935-27271935-27352011-07-0157e124810.1371/journal.pntd.0001248Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.Gemma L ChalonerPalmira VentosillaRichard J BirtlesBartonella bacilliformis is the aetiological agent of human bartonellosis, a potentially life threatening infection of significant public health concern in the Andean region of South America. Human bartonellosis has long been recognised in the region but a recent upsurge in the number of cases of the disease and an apparent expansion of its geographical distribution have re-emphasized its contemporary medical importance. Here, we describe the development of a multi-locus sequence typing (MLST) scheme for B. bacilliformis and its application to an archive of 43 isolates collected from patients across Peru. MLST identified eight sequence types among these isolates and the delineation of these was generally congruent with those of the previously described typing scheme. Phylogenetic analysis based on concatenated sequence data derived from MLST loci revealed that seven of the eight sequence types were closely related to one another; however, one sequence type, ST8, exhibited profound evolutionary divergence from the others. The extent of this divergence was akin to that observed between other members of the Bartonella genus, suggesting that ST8 strains may be better considered as members of a novel Bartonella genospecies.http://europepmc.org/articles/PMC3139668?pdf=render
spellingShingle Gemma L Chaloner
Palmira Ventosilla
Richard J Birtles
Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.
PLoS Neglected Tropical Diseases
title Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.
title_full Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.
title_fullStr Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.
title_full_unstemmed Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.
title_short Multi-locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen Bartonella bacilliformis.
title_sort multi locus sequence analysis reveals profound genetic diversity among isolates of the human pathogen bartonella bacilliformis
url http://europepmc.org/articles/PMC3139668?pdf=render
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AT palmiraventosilla multilocussequenceanalysisrevealsprofoundgeneticdiversityamongisolatesofthehumanpathogenbartonellabacilliformis
AT richardjbirtles multilocussequenceanalysisrevealsprofoundgeneticdiversityamongisolatesofthehumanpathogenbartonellabacilliformis