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2012 ; ä (210
): 59-85
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Platelet signaling
#MMPMID22918727
Stalker TJ
; Newman DK
; Ma P
; Wannemacher KM
; Brass LF
Handb Exp Pharmacol
2012[]; ä (210
): 59-85
PMID22918727
show ga
This chapter summarizes current ideas about the intracellular signaling that
drives platelet responses to vascular injury. After a brief overview of platelet
activation intended to place the signaling pathways into context, the first
section considers the early events of platelet activation leading up to integrin
activation and platelet aggregation. The focus is on the G protein-mediated
events utilized by agonists such as thrombin and ADP, and the tyrosine
kinase-based signaling triggered by collagen. The second section considers the
events that occur after integrin engagement, some of which are dependent on close
physical contact between platelets. A third section addresses the regulatory
events that help to avoid unprovoked or excessive platelet activation, after
which the final section briefly considers individual variations in platelet
reactivity and the role of platelet signaling in the innate immune response and
embryonic development.