Effects of GABA-Mimetic Drugs on Turnover of Histamine in the Mouse Brain
Author(s) -
Masahiro Nishibori,
Ryozo Oishi,
Yoshinori Itoh,
Kiyomi Saeki
Publication year - 1986
Publication title -
the japanese journal of pharmacology
Language(s) - English
Resource type - Journals
eISSN - 1347-3506
pISSN - 0021-5198
DOI - 10.1254/jjp.41.403
Subject(s) - histaminergic , muscimol , pargyline , aminooxyacetic acid , chemistry , histamine , baclofen , glutamate decarboxylase , pharmacology , endocrinology , histidine decarboxylase , medicine , gabaa receptor , agonist , biochemistry , histidine , biology , amino acid , monoamine oxidase , receptor , enzyme
The effect of GABA-mimetics on histaminergic activity in the mouse brain was investigated. Systemic administration of muscimol (2 and 5 mg/kg), THIP (5-15 mg/kg) and aminooxyacetic acid (AOAA) (25 mg/kg) but not baclofen (2.5-15 mg/kg) inhibited the pargyline (65 mg/kg)-induced accumulation of tele-methylhistamine (t-MH). There was no regional difference in the inhibitory effect of muscimol on the t-MH accumulation by pargyline treatment. Muscimol and AOAA also inhibited decrease in the histamine (HA) level induced by alpha-fluoromethylhistidine (50 mg/kg), a specific inhibitor of histidine decarboxylase. These results suggest that these GABA-mimetics reduce the HA turnover in the mouse brain.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom