Alpha adrenergic receptor that is found in … Alpha adrenergic receptor that is found in platelets and has a low affinity for prazosin. Alpha-2-adrenergic receptors include 3 highly homologous subtypes: alpha2A, alpha2B, and alpha2C. These receptors have a critical role in regulating neurotransmitter release from sympathetic nerves and from adrenergic neurons in the central nervous system. Studies in mice revealed that both the alpha2A and alpha2C subtypes were required for normal presynaptic control of transmitter release from sympathetic nerves in the heart and from central noradrenergic neurons; the alpha2A subtype inhibited transmitter release at high stimulation frequencies. (Adapted from Entrez Gene). n frequencies. (Adapted from Entrez Gene).
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