| Stimulation of blood mononuclear cells with bacterial virulence factors leads to the release of pro-coagulant and pro-inflammatory microparticles. | |
| | |
MedLine Citation:
|
PMID: 21951918 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
Severe infectious diseases remain a major and life-threatening health problem. In serious cases a systemic activation of the coagulation cascade and hypovolemic shock are critical complications that are associated with high mortality rates. Here we report that blood mononuclear cells, stimulated with M1 protein of Streptococcus pyogenes or other bacterial virulence factors, produce not only pro-coagulant, but also pro-inflammatory microparticles (MPs). Our results also show that activation of the contact system on MPs contributes to these two effects. Phosphatidylserine (PS) plays an important role in these processes as its up-regulation on MPs allows an assembly and activation of the contact system. This in turn results in stabilization of the tissue factor-induced clot and a processing of high-molecular weight kininogen by plasma kallikrein followed by the release of bradykinin, a potent vascular mediator. Pro-coagulant monocyte-derived MPs were identified in plasma samples from septic patients and further analysis of MPs from these patients revealed that their pro-coagulant activity is dependent on the tissue factor- and contact system-driven pathway. |
| | |
Authors:
|
Sonja Oehmcke; Matthias Mörgelin; Johan Malmström; Adam Linder; Michelle Chew; Henrik Thorlacius; Heiko Herwald |
Related Documents
:
|
22240988 - Pro-apoptotic effects of tepoxalin, a cyclooxygenase/lipoxygenase dual inhibitor, on ca... 18422438 - Efficacy of recombinant bacille calmette-guérin vaccine secreting interleukin-15/antig... 9554268 - Protective immunity to intracellular parasites--a focus for vaccine research and a chal... 22043818 - Toll-like receptor-mediated inhibition of gas6 and pros expression facilitates inflamma... 17428858 - Herpes simplex virus type 1 induces cd83 degradation in mature dendritic cells with imm... 1516568 - Morphometric comparisons of rat alveolar macrophages, pulmonary interstitial macrophage... |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-9-27 |
Journal Detail:
|
Title: Cellular microbiology Volume: - ISSN: 1462-5822 ISO Abbreviation: - Publication Date: 2011 Sep |
Date Detail:
|
Created Date: 2011-9-28 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 100883691 Medline TA: Cell Microbiol Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
|
© 2011 Blackwell Publishing Ltd. |
Affiliation:
|
From the Department of Clinical Sciences, Lund, Division of Infection Medicine, Department of Immunotechnology, Department of Clinical Sciences, Lund, Division of Intensive Care and Surgery, Lund University, Sweden. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Genetic evidence for an essential role of neuronally expressed IL-6 signal transducer gp130 in the i...
Next Document: Carboxylesterase expression in human dental pulp cells: Role in regulation of BisGMA-induced prostan...