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Platelet Activation
- Molecular classification
- Biological Process
01
Overview
Platelet activation is a critical physiological process in hemostasis, the mechanism that stops bleeding and initiates tissue repair following vascular injury. It involves the transformation of platelets from a resting state to an active state, enabling them to adhere to sites of vessel damage, aggregate with other platelets, and interact with coagulation factors to form a stable blood clot. Dysregulated platelet activation contributes to various disorders including arterial thrombosis, myocardial infarction, and stroke. Excessive or insufficient platelet activity can lead respectively to unwanted clot formation or bleeding diatheses.
02
Mechanism of action
Various mechanisms including inhibition of cyclooxygenase (COX), ADP receptor antagonism, and GPIIb/IIIa receptor antagonism
03
Biological functions
HemostasisPrimary HemostasisSecondary HemostasisInflammationWound HealingAdhesionAggregationSecretion
04
Disease associations
Arterial ThrombosisMyocardial InfarctionStrokeBleeding Diatheses
05
Safety considerations
Increased bleeding riskThrombocytopeniaThrombotic thrombocytopenic purpura (TTP)
06
Interacting drugs
Aspirin
6 more in the full profile.
07
Biomarkers
Platelet aggregation assaysP-selectin expressionThromboxane B2 levelsPlatelet countMean platelet volume (MPV)
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