Abstract：
:Lysozyme is an important and widespread component of the innate immune response that constitutes the first line of defense against bacterial pathogens. The bactericidal effect of this enzyme relies on its capacity to hydrolyze the bacterial cell wall and also on a nonenzymatic mechanism involving its cationic antimicrobial peptide (CAMP) properties, which leads to membrane permeabilization. In this paper, we report our findings on the lysozyme resistance ability of Rhodococcus equi, a pulmonary pathogen of young foals and, more recently, of immunocompromised patients, whose pathogenic capacity is conferred by a large virulence plasmid. Our results show that (i) R. equi can be considered to be moderately resistant to lysozyme, (ii) the activity of lysozyme largely depends on its muramidase action rather than on its CAMP activity, and (iii) the virulence plasmid confers part of its lysozyme resistance capacity to R. equi. This study is the first one to demonstrate the influence of the virulence plasmid on the stress resistance capacity of R. equi and improves our understanding of the mechanisms enabling R. equi to resist the host defenses.
journal_name
Curr Microbioljournal_title
Current microbiologyauthors
Hébert L,Bidaud P,Goux D,Benachour A,Laugier C,Petry Sdoi
10.1007/s00284-013-0483-6subject
Has Abstractpub_date
2014-03-01 00:00:00pages
352-7issue
3eissn
0343-8651issn
1432-0991journal_volume
68pub_type
杂志文章abstract：:A bacterium designated strain B113, able to degrade benzene, toluene, and ethylbenzene compounds (BTE), was isolated from gasoline-contaminated sediment at a gas station in Geoje, Korea. Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolate belonged to the genus Acinetobacter. The biodegradati...
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更新日期：2008-04-01 00:00:00
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