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Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy
Staphylococcus aureus is the most common pathogen causing osteomyelitis (OM). The aim of this study was to explore the clonal complex (CC) distribution and the pattern of virulence determinants of S. aureus isolates from OM in Italy. Whole-genome sequencing was performed on 83 S. aureus isolates fro...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Frontiers Media S.A.
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8927738/ https://www.ncbi.nlm.nih.gov/pubmed/35308345 http://dx.doi.org/10.3389/fmicb.2022.846167 |
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author | Pimentel de Araujo, Fernanda Pirolo, Mattia Monaco, Monica Del Grosso, Maria Ambretti, Simone Lombardo, Donatella Cassetti, Tiziana Gargiulo, Raffaele Riccobono, Eleonora Visca, Paolo Pantosti, Annalisa |
author_facet | Pimentel de Araujo, Fernanda Pirolo, Mattia Monaco, Monica Del Grosso, Maria Ambretti, Simone Lombardo, Donatella Cassetti, Tiziana Gargiulo, Raffaele Riccobono, Eleonora Visca, Paolo Pantosti, Annalisa |
author_sort | Pimentel de Araujo, Fernanda |
collection | PubMed |
description | Staphylococcus aureus is the most common pathogen causing osteomyelitis (OM). The aim of this study was to explore the clonal complex (CC) distribution and the pattern of virulence determinants of S. aureus isolates from OM in Italy. Whole-genome sequencing was performed on 83 S. aureus isolates from OM cases in six hospitals. Antibiotic susceptibility tests showed that 30.1% of the isolates were methicillin-resistant S. aureus (MRSA). The most frequent CCs detected were CC22, CC5, CC8, CC30, and CC15, which represent the most common lineages circulating in Italian hospitals. MRSA were limited in the number of lineages (CC22, CC5, CC8, and CC1). Phylogenetic analysis followed the sequence type-CC groupings and revealed a non-uniform distribution of the isolates from the different hospitals. No significant difference in the mean number of virulence genes carried by MRSA or MSSA isolates was observed. Some virulence genes, namely cna, fib, fnbA, coa, lukD, lukE, sak, and tst, were correlated with the CC. However, different categories of virulence factors, such as adhesins, exoenzymes, and toxins, were frequently detected and unevenly distributed among all lineages. Indeed, each lineage carried a variable combination of virulence genes, likely reflecting functional redundancy, and arguing for the importance of those traits for the pathogenicity in OM. In conclusion, no specific genetic trait in the most frequent lineages could explain their high prevalence among OM isolates. Our findings highlight that CCs detected in OM isolates follow the epidemiology of S. aureus infections in the country. It is conceivable that any of the most common S. aureus CC can cause a variety of infections, including OM. |
format | Online Article Text |
id | pubmed-8927738 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-89277382022-03-18 Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy Pimentel de Araujo, Fernanda Pirolo, Mattia Monaco, Monica Del Grosso, Maria Ambretti, Simone Lombardo, Donatella Cassetti, Tiziana Gargiulo, Raffaele Riccobono, Eleonora Visca, Paolo Pantosti, Annalisa Front Microbiol Microbiology Staphylococcus aureus is the most common pathogen causing osteomyelitis (OM). The aim of this study was to explore the clonal complex (CC) distribution and the pattern of virulence determinants of S. aureus isolates from OM in Italy. Whole-genome sequencing was performed on 83 S. aureus isolates from OM cases in six hospitals. Antibiotic susceptibility tests showed that 30.1% of the isolates were methicillin-resistant S. aureus (MRSA). The most frequent CCs detected were CC22, CC5, CC8, CC30, and CC15, which represent the most common lineages circulating in Italian hospitals. MRSA were limited in the number of lineages (CC22, CC5, CC8, and CC1). Phylogenetic analysis followed the sequence type-CC groupings and revealed a non-uniform distribution of the isolates from the different hospitals. No significant difference in the mean number of virulence genes carried by MRSA or MSSA isolates was observed. Some virulence genes, namely cna, fib, fnbA, coa, lukD, lukE, sak, and tst, were correlated with the CC. However, different categories of virulence factors, such as adhesins, exoenzymes, and toxins, were frequently detected and unevenly distributed among all lineages. Indeed, each lineage carried a variable combination of virulence genes, likely reflecting functional redundancy, and arguing for the importance of those traits for the pathogenicity in OM. In conclusion, no specific genetic trait in the most frequent lineages could explain their high prevalence among OM isolates. Our findings highlight that CCs detected in OM isolates follow the epidemiology of S. aureus infections in the country. It is conceivable that any of the most common S. aureus CC can cause a variety of infections, including OM. Frontiers Media S.A. 2022-03-03 /pmc/articles/PMC8927738/ /pubmed/35308345 http://dx.doi.org/10.3389/fmicb.2022.846167 Text en Copyright © 2022 Pimentel de Araujo, Pirolo, Monaco, Del Grosso, Ambretti, Lombardo, Cassetti, Gargiulo, Riccobono, Visca and Pantosti. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Microbiology Pimentel de Araujo, Fernanda Pirolo, Mattia Monaco, Monica Del Grosso, Maria Ambretti, Simone Lombardo, Donatella Cassetti, Tiziana Gargiulo, Raffaele Riccobono, Eleonora Visca, Paolo Pantosti, Annalisa Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy |
title | Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy |
title_full | Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy |
title_fullStr | Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy |
title_full_unstemmed | Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy |
title_short | Virulence Determinants in Staphylococcus aureus Clones Causing Osteomyelitis in Italy |
title_sort | virulence determinants in staphylococcus aureus clones causing osteomyelitis in italy |
topic | Microbiology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8927738/ https://www.ncbi.nlm.nih.gov/pubmed/35308345 http://dx.doi.org/10.3389/fmicb.2022.846167 |
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