[Effect of benzamide derivatives on rat brain monoamine oxidase activity in vitro].
The ability of moclobamide and other benzamide derivatives to inhibit the activity of monoamine oxidase in the rat brain was studied. Distinct effects of these compounds on the deamination of serotonin and norepinephrine (MAO-A substrates); 2-phenylethylamine (selective MAO-B substrate); tyramine and dopamine (MAO-A and MAO-B substrates) are shown. It was demonstrated that among all the compounds studied moclobamide appeared to be the most active and selective inhibitor of MAO-A: at a concentration of 100 microM it caused a 100% inhibition of serotonin and norepinephrine deamination, which might be explained by the presence of C1 atom in the para-position of benzene ring in moclobamide molecule. Other benzamide derivatives were less active in inhibiting MAO-A and had but a negligible effect on dopamine- and 2-phenylethylamine deamination.
D000818:Animals; D001549:Benzamides / Q000494:pharmacology*; D001921:Brain / Q000187:drug effects* / Q000201:enzymology; D004298:Dopamine / Q000378:metabolism; D066298:In Vitro Techniques; D020912:Moclobemide; D008995:Monoamine Oxidase / Q000378:metabolism; D008996:Monoamine Oxidase Inhibitors / Q000494:pharmacology*; D009638:Norepinephrine / Q000378:metabolism; D010627:Phenethylamines / Q000378:metabolism; D051381:Rats; D012701:Serotonin / Q000378:metabolism; D014439:Tyramine / Q000378:metabolism
D001549:Benzamides; D008996:Monoamine Oxidase Inhibitors; D010627:Phenethylamines; D012701:Serotonin; D008995:Monoamine Oxidase; D020912:Moclobemide; D004298:Dopamine; D009638:Norepinephrine; D014439:Tyramine
Vliianie razlichnykh proizvodnykh benzamida na aktivnost' monaminoksidazy mozga krysy in vitro.