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Tropism and virulence of Cutibacterium (formerly Propionibacterium) acnes involved in implant-associated infection.

Abstract：

:The recognition of the pathogenicity of Cutibacterium acnes in implant-associated infection is not always obvious. In this paper, we aimed to distinguish pathogenic and non-pathogenic C. acnes isolates. To reach this goal, we investigated the clonal complex (CC) of a large collection of C. acnes clinical isolates through Multi-Locus Sequence Typing (MLST), we established a Caenorhabditis elegans model to assess C. acnes virulence and we investigated the presence of virulence factors in our collection. Ours results showed that CC36 and CC53 C. acnes isolates were more frequently observed in prosthetic joint infections (PJI) than CC18 and CC28 C. acnes isolates (p = 0.021). The C. elegans model developed here showed two distinct virulence groups of C. acnes (p < 0.05). These groups were not correlated to CC or clinical origin. Whole genome sequencing allowed us to identify a putative gene linked to low virulent strains. In conclusion, MLST remains a good method to screen pathogenic C. acnes isolates according to their clinical context but mechanisms of C. acnes virulence need to be assess thought transcriptomic analysis to investigate regulatory process.

journal_name

Anaerobe

journal_title

Anaerobe

authors

Aubin GG,Lavigne JP,Foucher Y,Dellière S,Lepelletier D,Gouin F,Corvec S

doi

10.1016/j.anaerobe.2017.04.009

subject

Has Abstract

pub_date

2017-10-01 00:00:00

pages

73-78

eissn

1075-9964

issn

1095-8274

pii

S1075-9964(17)30076-8

journal_volume

47

pub_type

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