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Antagonism of histamine-activated adenylate cyclase in brain by D-lysergic acid diethylamide.

J P Green, C L Johnson, Harel Weinstein, Saul Maayani

Proceedings of the National Academy of Sciences December 1, 1977 DOI: 10.1073/pnas.74.12.5697 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Experimental study Peer reviewed
Population Guinea pig brain hippocampus and cortex cells
Interventions D-Lysergic acid diethylamide D-2-bromolysergic acid diethylamide
Topics LSD Serotonin
Keywords Cimetidine Histamine h2 receptor Cyclase Adenylate kinase Antagonist Pharmacology Endocrinology Biochemistry
Citations 91
Key findings LSD and BOL are competitive antagonists of histamine H2-receptor-linked adenylate cyclase, with BOL being 10 times more potent than cimetidine.

Abstract

D-Lysergic acid diethylamide and D-2-bromolysergic acid diethylamide are competitive antagonists of the histamine activation of adenylate cyclase [ATP pyrophosphate-lyase (cyclizing); E.C. 4.6.1.1] in broken cell preparations of the hippocampus and cortex of guinea pig brain. The adenylate cyclase is linked to the histamine H2-receptor. Both D-lysergic acid diethylamide and D-2-bromolysergic acid diethylamide show topological congruency with potent H2-antagonists. D-2-Bromolysergic acid diethylamide is 10 times more potent as an H2-antagonist than cimetidine, which has been the most potent H2-antagonist reported, and D-lysergic acid diethylamide is about equipotent to cimetidine. Blockade of H2-receptors could contribute to the behavioral effects of D-2-bromolysergic acid diethylamide and D-lysergic acid diethylamide.

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