期刊
JOURNAL OF THROMBOSIS AND HAEMOSTASIS
卷 9, 期 6, 页码 1097-1107出版社
WILEY
DOI: 10.1111/j.1538-7836.2011.04264.x
关键词
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资金
- Science Foundation Ireland
- Health Research Board, Ireland
- British Heart Foundation
- Wellcome Trust
It has become clear that platelets are not simply cell fragments that plug the leak in a damaged blood vessel; they are, in fact, also key components in the innate immune system, which is supported by the presence of Toll-like receptors (TLRs) on platelets. As the cells that respond first to a site of injury, they are well placed to direct the immune response to deal with any resulting exposure to pathogens. The response is triggered by bacteria binding to platelets, which usually triggers platelet activation and the secretion of antimicrobial peptides. The main platelet receptors that mediate these interactions are glycoprotein (GP)IIb-IIIa, GPIb alpha, Fc gamma RIIa, complement receptors, and TLRs. This process may involve direct interactions between bacterial proteins and the receptors, or can be mediated by plasma proteins such as fibrinogen, von Willebrand factor, complement, and IgG. Here, we review the variety of interactions between platelets and bacteria, and look at the potential for inhibiting these interactions in diseases such as infective endocarditis and sepsis.
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