期刊论文详细信息
BMC Immunology
Streptococcus sanguinis-induced cytokine and matrix metalloproteinase-1 release from platelets
Archie McNicol1  Olivier Garraud2  Charles-Antoine Arthaud3  Elke Jackson1  Adrien Chabert2  Hind Hamzeh-Cognasse2  Fabrice Cognasse2 
[1] International Centre for Oral Systemic Health, University of Manitoba, Winnipeg, MB, Canada;GIMAP-EA3064, Université de Lyon, Saint-Étienne 42023, France;Etablissement Français du Sang (EFS) Auvergne-Loire, Saint-Etienne, France
关键词: Streptococcus sanguinis;    Inflammation;    Oral cavity;    Signalling;    Cytokines;    Platelets;   
Others  :  1077717
DOI  :  10.1186/1471-2172-15-15
 received in 2013-10-30, accepted in 2014-04-07,  发布年份 2014
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【 摘 要 】

Background

Streptococcus sanguinis (S.sanguinis), a predominant bacterium in the human oral cavity, has been widely associated with the development of infective endocarditis. Platelets play both a haemostatic function and can influence both innate and adaptive immune responses. Previous studies have shown that S.sanguinis can interact with, and activate, platelets.

Results

The aim of this study was to determine whether S.sanguinis stimulates the release of matrix metalloproteinases (MMPs) 1, 2 and 9 and the pro-inflammatory mediators SDF-1, VEGF and sCD40L, from platelets and to subsequently pharmacologically address the release mechanism (s). S.sanguinis stimulated the release of MMP-1, SDF-1, VEGF and sCD40L from platelets and inhibitors of cyclooxygenase and phosphatidylinositol 3-kinase, and antagonists of the αIIbβ3 integrin and glycoprotein Ib, each inhibited the secretion of all factors.

Conclusions

Therefore the release of MMP-1, SDF-1, VEGF and sCD40L occurs late in the platelet response to S.sanguinis and highlights the complex intracellular signalling pathways stimulated in response to S.sanguinis which lead to haemostasis, MMP and pro-inflammatory mediator secretion.

【 授权许可】

   
2014 Cognasse et al.; licensee BioMed Central Ltd.

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