cholamines. JOEL G. HARDMAN AND STEVEN E. MAYER 29 Antagonism of Monoamine Oxidase Inhibitors against Norepinephrine, Acetyicholine and Potassium in the Isolated Nictitating Membrane of the Cat. T. H. TSAI AND W. W. FLEMING 40 A St.udy of the Potentiation of Tryptamine by Monoamine Oxidase Inhibitors in the Dog. JOHN NELSON EBLE 48 Pharmacology of a Group of Phenylpiperazine Tetrazole Derivativ...

As with many psychiatric drugs, the discovery of irreversible MAOIs was serendipitous. While being used as an antitubercular agent in the 1950s, iproniazid—a derivative of the hydrazine compound isocarboxazid—was observed to have significant antidepressant properties. Almost at the same time as the discovery of TCAs such as amitriptyline and imipramine (which were also discovered by chance), MA...

In 2006, the monoamine oxidase-A gene was widely reported in the media as being associated with risk-taking and aggressive behaviour in Māori. We examine the scientific evidence underlying this claim. Whilst there is credible evidence for a contribution of a monoamine oxidase-A genetic variant to antisocial behaviour in Caucasians, there is no direct evidence to support such an association in M...

The flavoenzyme monoamine oxidase (MAO) regulates mammalian behavioral patterns by modulating neurotransmitters such as adrenaline and serotonin. The mechanistic basis which underpins this enzyme is far from agreed upon. Reported herein is that the combination of a synthetic flavin and alloxan generates a catalyst system which facilitates biomimetic amine oxidation. Mechanistic and electron par...

gations: chest x-ray normal; Hb 55%; W.B.C. 7,100 with normal diffierential; iron deficiency on the blood film; E.S.R. 138 mm. in one hour; Paul-Bunnell test negative. Blood culture revealed Haemophilus influenzae type B sensitive to all the usual antibiotics except sulphonamide. This child was treated with ampicillin and made a good recovery. My point in recording this case history is to empha...

Pretreatment with two doses of reserpine (each 0.1 mg/kg, intraperitoneally) sensitizes the heart to the positive chronotropic action of norepinephrine and reduces the response to stimulation of the accelerans nerve. Ganglionic transmission remains unaffected. The results indicate that the presence of certain stores of peripheral sympathetic transmitter is essential for the production of tachyc...

We have structure, a wealth of kinetic data, thousands chemical ligands and clinical information for the effects range drugs on monoamine oxidase activity in vivo. comparative from various species mutations kinetics inhibition. Nevertheless, there are what seem like simple questions still to be answered. This article presents brief summary existing experimental evidence background poses that re...

The monoamine oxidases play a vital role in the metabolism of biogenic amines in the central nervous system and in peripheral tissues. Using oligonucleotide probes derived from three sequenced peptide fragments, we have isolated cDNA clones that encode the A and B forms of monoamine oxidase and have determined the nucleotide sequences of these cDNAs. Comparison of the deduced amino acid sequenc...

The two forms of monoamine oxidase (MAO), A and B, continue to be of major interest to biochemists, pharmacologists, neurologists, and gerontologists. Despite intensive study for more than half a century, unexpected and unique properties of these enzymes continue to come to light. Recent studies have centered on their kinetic mechanism, their unique predilection for substrates related to the ne...