期刊
PURINERGIC SIGNALLING
卷 7, 期 3, 页码 357-365出版社
SPRINGER
DOI: 10.1007/s11302-011-9220-4
关键词
Adenosine; A(2B) adenosine receptor; A(2A) adenosine receptor; ADP-mediated platelet activation and aggregation; Cyclic adenosine monophosphate (cAMP)
资金
- NHLBI [HL93149]
Adenosine is an important regulatory metabolite and an inhibitor of platelet activation. Adenosine released from different cells or generated through the activity of cell-surface ectoenzymes exerts its effects through the binding of four different G-protein-coupled adenosine receptors. In platelets, binding of A(2) subtypes (A(2A) or A(2B)) leads to consequent elevation of intracellular cyclic adenosine monophosphate, an inhibitor of platelet activation. The significance of this ligand and its receptors for platelet activation is addressed in this review, including how adenosine metabolism and its A(2) subtype receptors impact the expression and activity of adenosine diphosphate receptors. The expression of A(2) adenosine receptors is induced by conditions such as oxidative stress, a hallmark of aging. The effect of adenosine receptors on platelet activation during aging is also discussed, as well as potential therapeutic applications.
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