title: Regulation of adenylate cyclase activity mediated by muscarinic acetylcholine receptors.
abstract: Carbachol, an activator of muscarinic acetylcholine receptors of NG108-15 hybrid cells, inhibits adenylate cyclase [ATP pyrophosphate-lyase (cyclizing), EC 4.6.1.1] rapidly and reversibly and slowly evokes a 200-300% increase in adenylate cyclase activity over a period of 24-30 hr. Both the inhibition of adenylate cyclase and the gradual increase in enzyme activity are dependent on muscarinic acetylcholine receptors and the receptor activator. Withdrawal of carbachol results in a gradual return of adenylate cyclase activity to control levels over a period of 6 hr; the half-life for decay of enzyme activity is 1.6 hr. These results show that muscarinic acetylcholine receptors mediate both transient and long-lived effects on adenylate cyclase activity that resemble those of opiates.
mesh_terms: D000262:Adenylyl Cyclases / Q000378:metabolism*; D001285:Atropine / Q000494:pharmacology; D002217:Carbachol / Q000494:pharmacology*; D002455:Cell Division; D002460:Cell Line; D000242:Cyclic AMP / Q000378:metabolism; D009474:Neurons / Q000502:physiology*; D011458:Prostaglandins E / Q000494:pharmacology; D011950:Receptors, Cholinergic / Q000502:physiology*; D011976:Receptors, Muscarinic / Q000187:drug effects / Q000502:physiology*; D013997:Time Factors
chemical_list: D011458:Prostaglandins E; D011950:Receptors, Cholinergic; D011976:Receptors, Muscarinic; D001285:Atropine; D002217:Carbachol; D000242:Cyclic AMP; D000262:Adenylyl Cyclases