Journal
JOURNAL OF THROMBOSIS AND HAEMOSTASIS
Volume 14, Issue 5, Pages 918-930Publisher
WILEY
DOI: 10.1111/jth.13302
Keywords
blood platelets; hemostasis; platelet activation; review; thrombosis
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Funding
- British Heart Foundation [RG/09/011/28094, RG/15/2/31224]
- British Heart Foundation [RG/15/2/31224, RG/09/011/28094] Funding Source: researchfish
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The role of platelets in hemostasis and thrombosis is dependent on a complex balance of activatory and inhibitory signaling pathways. Inhibitory signals released from the healthy vasculature suppress platelet activation in the absence of platelet receptor agonists. Activatory signals present at a site of injury initiate platelet activation and thrombus formation; subsequently, endogenous negative signaling regulators dampen activatory signals to control thrombus growth. Understanding the complex interplay between activatory and inhibitory signaling networks is an emerging challenge in the study of platelet biology, and necessitates a systematic approach to utilize experimental data effectively. In this review, we will explore the key points of platelet regulation and signaling that maintain platelets in a resting state, mediate activation to elicit thrombus formation, or provide negative feedback. Platelet signaling will be described in terms of key signaling molecules that are common to the pathways activated by platelet agonists and can be described as regulatory nodes for both positive and negative regulators.
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