Studies on Monoamine Oxidase (Report XXV) Effects of Alcohols on Beef Liver Mitochondrial Monoamine Oxidase

Studies on monoamine oxidase. (Report XXV). Effects of alcohols on beef liver mitochondrial monoamine oxidase.

The effects of alcohols on MAO activity in beef and rat liver mitochondria were studied. MAO activity was determined manometrically using tyramine (1× 10-2 M) as substrate and expressed as O2 uptake in 60 min. At concentrations of 0.1 to 10%, methanol and ethanol increased MAO activity in both beef and rat liver mitochondria. Activation of MAO by ethanol was reversib...

Mitochondrial Monoamine Oxidase

Inhibitions of the relatively highly purified flavoenzyme, bovine kidney mitochondrial monoamine oxidase, previously described in Paper I (Erwin, V. G., and Hellerman, L., J. Biol. Gem., 242, 4230 (1967)), by several agents of current interest have been investigated. The inhibitors include Nmethyl-N-(Z-propynyl)benzylamine (pargyline), (+)-fransphenylcyclopropylamine (d form of tranylcypromine)...

Mitochondrial Monoamine Oxidase

Monoamine oxidase of bovine kidney mitochondria has been purified to high specific activity by solubilization with digitonin, ammonium sulfate fractionation, and calcium phosphate gel-cellulose column chromatography. Absorption and fluorescence spectra indicated strongly that mitochondrial monoamine oxidase is a flavoenzyme. Under anaerobic conditions, benzylamine reduced the flavin at 460 rnp ...

Inhibition of monoamine oxidase by stilbenes from Rheum palmatum

Seven stilbenes and one catechin were bioactivity-guidedly isolated from the rhizomes of Rheum palmatem. Their structures were identified as piceatannol(1), resveratrol(2), piceid(3), rhapontigenin(4), piceatannol-3'-O-β-D-glucopyranoside(5), rhaponticin(6), catechin(7) and desoxyrhapontigenin(8). Anti-monoamine oxidase (MAO) activities of compounds 1–8 were tested. Compounds 1 and 8 showed sig...

Studies on monoamine oxidase (Report LXXVII). Effects of pH on MAO in rabbit serum.