Abstract
Platelet-derived mediators, either in an autocrine or paracrine mode of action, regulate systemic and vascular inflammation as well as contribute to innate immune defense and also to regenerative mechanisms. This review reevaluates the impact of inflammatory mediators such as CXC-chemokine-Ligands, their receptors in modulating platelet functions and platelet survival, thereby influencing inflammatory or regenerative processes. We further explore the contribution of cyclophilin A and C-reactive protein in regulating thrombotic and hemostatic attributes of platelets. Moreover, we emphasize on the role of platelets as active components bridging the innate and adaptive immune responses, toll-like receptors on platelets, platelet interactions with the complement system, and platelet-derived thrombocidins exhibiting direct antimicrobial properties. As highlighted in this review, the multifaceted aspects of platelets and platelet-derived factors encourage further investigations in this intriguing and expansive but largely uncharted area of research in platelet biology.
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