Reference : Existence of two groups of Staphylococcus aureus strains isolated from bovine mastiti...
Scientific journals : Article
Life sciences : Veterinary medicine & animal health
Life sciences : Microbiology
http://hdl.handle.net/2268/190611
Existence of two groups of Staphylococcus aureus strains isolated from bovine mastitis based on biofilm formation, intracellular survival, capsular profile and agr-typing.
English
Bardiau, Marjorie mailto [Université de Liège > Département des maladies infectieuses et parasitaires (DMI) > Bactériologie et pathologie des maladies bactériennes >]
Caplin, Jonathan [> >]
Detilleux, Johann mailto [Université de Liège > Département des productions animales (DPA) > Génétique quantitative >]
Graber, Hans [> >]
Moroni, Paolo [> >]
Taminiau, Bernard mailto [Université de Liège > Département de sciences des denrées alimentaires (DDA) > Microbiologie des denrées alimentaires >]
Mainil, Jacques mailto [Université de Liège > Département des maladies infectieuses et parasitaires (DMI) > Bactériologie et pathologie des maladies bactériennes >]
2016
Veterinary Microbiology
Elsevier Science
185
1-6
Yes (verified by ORBi)
International
0378-1135
1873-2542
Amsterdam
Netherlands
[en] Biofilm ; Bovine mastitis ; Capsule ; Intracellular survival ; Persistence ; Staphylococcus aureus
[en] Staphylococcus (S.) aureus is recognised worldwide as an important pathogen causing contagious acute and chronic bovine mastitis. Chronic mastitis account for a significant part of all bovine cases and represent an important economic problem for dairy producers. Several properties (biofilm formation, intracellular survival, capsular expression and group agr) are thought to be associated with this chronic status. In a previous study, we found the existence of two groups of strains based on the association of these features. The aim of the present work was to confirm on a large international and non-related collection of strains the existence of these clusters and to associate them with case history records. In addition, the genomes of eight strains were sequenced to study the genomic differences between strains of each cluster. The results confirmed the existence of both groups based on capsular typing, intracellular survival and agr-typing: strains cap8-positive, belonging to agr group II, showing a low invasion rate and strains cap5-positive, belonging to agr group I, showing a high invasion rate. None of the two clusters were associated with the chronic status of the cow. When comparing the genomes of strains belonging to both clusters, the genes specific to the group "cap5-agrI" would suggest that these strains are better adapted to live in hostile environment. The existence of these two groups is highly important as they may represent two clusters that are adapted differently to the host and/or the surrounding environment.
Researchers
http://hdl.handle.net/2268/190611
also: http://hdl.handle.net/2268/197502
10.1016/j.vetmic.2016.01.003
Copyright (c) 2016 Elsevier B.V. All rights reserved.

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Open access
1-s2.0-S0378113516300025-main.pdfPublisher postprint559.57 kBView/Open

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.