Abstract
Adenosine 3′5′ cyclic monophosphate (cAMP) is the second messenger mediating vasodilatation induced by β2 adrenergic agonists, vasodilator prostaglandins, histamine, vasoactive intestinal peptide, etc. cAMP exerts its action primarily by the activation of cAMP-dependent kinase (PKA). The effects of cAMP may also be mediated by the exchange proteins directly activated by cAMP and the cyclic nucleotide-gated (CNG) channels. The cytosolic levels of cAMP reflect its synthesis by adenylyl cyclase and its hydrolysis by phosphodiesterases, particularly the type 4 phosphodiesterase. The major mechanisms underlying cAMP-mediated vasodilatation include the activation of potassium channels, the activation of myosin light chain phosphatase, and the inhibition of RhoA/Rho kinase signaling.
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Gao, Y. (2017). Cyclic AMP Signaling. In: Biology of Vascular Smooth Muscle: Vasoconstriction and Dilatation. Springer, Singapore. https://doi.org/10.1007/978-981-10-4810-4_13
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DOI: https://doi.org/10.1007/978-981-10-4810-4_13
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