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TWO KINDS OF TRYPTAMINE RECEPTOR
Author(s) -
GADDUM J. H.,
PICARELLI Z. P.
Publication year - 1957
Publication title -
british journal of pharmacology and chemotherapy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.432
H-Index - 211
eISSN - 1476-5381
pISSN - 0366-0826
DOI - 10.1111/j.1476-5381.1957.tb00142.x
Subject(s) - atropine , receptor , lysergic acid diethylamide , dihydroergotamine , tryptamine , pharmacology , morphine , chemistry , lysergic acid , endocrinology , medicine , serotonin , biology , biochemistry , migraine
There are two kinds of tryptamine receptor in the guinea‐pig ileum, namely the M receptors which can be blocked with morphine and the D receptors which can be blocked with dibenzyline. Atropine, an atropine‐like drug, cocaine, and methadone inhibit effects due to the M receptors, even after dibenzyline, but have no additional effect after morphine. Lysergic acid diethylamide, dihydroergotamine and 5‐benzyloxygramine inhibit effects due to the D receptors, even after morphine, but have no additional effect after dibenzyline. The M receptors are probably in the nervous tissue and the D receptors are probably in the muscles.