the h1-receptor antagonists mepyramine , promethazine , triprolidine and chlorpheniramine competitively antagonized the potentiation of impromidine-stimulated cyclic amp accumulation elicited by histamine and 2-thiazolylethylamine in rabbit cerebral cortex without affecting the response to impromidine alone .
C2757048
h1-receptor
C0034282
mepyramine