Bw-1370u87, A New Monoamine Oxidase-A Inhibitor - Effects On Biogenic-Amine Neurotransmitter And Metabolite Levels In Rat-Brain

DRUG DEVELOPMENT RESEARCH(1992)

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摘要
Monoamine oxidase (MAO) inhibitors increase brain concentrations of biogenic amines and decrease concentrations of the acidic metabolites of biogenic amines. It has been suggested that the magnitude of these effects is an indicator of MAO inhibition. Oral doses of BW 1370U87, moclobemide, and brofaromine were given to rats at doses previously shown to induce brain MAO-A inhibition by at least 80%. The effects on brain biogenic amines and their metabolites were quantified 2 and 4 hr after oral dosing using HPLC with electrochemical detection. Moclobemide and BW 1370U87 induced larger increases in 5HT, NE, and DA and larger decreases in DOPAC, 5HIAA, and HVA than did brofaromine at the doses tested. At 8 hr post-dose the effects of BW 1370U87 on 5HT, NE, DOPAC, and HVA were still significant (P less-than-or-equal-to 0.05), and the time course was similar to that seen following moclobemide and brofaromine treatment. Only BW 1370U87 increased brain concentrations ot biogenic amines at a dose that does not significantly potentiate pressor effects of orally administered tyramine.
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HPLC-ELECTROCHEMICAL DETECTION, MOCLOBEMIDE, BROFAROMINE
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