Tyramine infusions and selective monoamine oxidase inhibitor treatment

1981 ◽  
Vol 74 (1) ◽  
pp. 4-7 ◽  
Author(s):  
David Pickar ◽  
Robert M. Cohen ◽  
David C. Jimerson ◽  
Dennis L. Murphy
1979 ◽  
Vol 18 (10) ◽  
pp. 771-776 ◽  
Author(s):  
D.S. Robinson ◽  
I.C. Campbell ◽  
Margaret Walker ◽  
Nancy J. Statham ◽  
W. Lovenberg ◽  
...  

1981 ◽  
Vol 74 (1) ◽  
pp. 8-12 ◽  
Author(s):  
David Pickar ◽  
Robert M. Cohen ◽  
David C. Jimerson ◽  
C. Raymond Lake ◽  
Dennis L. Murphy

1980 ◽  
Vol 192 (2) ◽  
pp. 703-707 ◽  
Author(s):  
A H Bone ◽  
H R Taufek

Male Wistar rats of various age groups were injected daily over a period of 3 weeks with iproniazid (10 micrograms/g body wt.) and L-dihydroxyphenylalanine (L-dopa; 0.1 mg/g body wt.). On the final day 1 h before the termination of the experiment the animals were injected with L-[14C]valine (0.1 microCi/g body wt.). The specific radioactivity of the valine in the proteins of the subcellular fractions of the tissues examined, relative to the time-integrated mean specific radioactivity of this amino acid in the acid-soluble pools of these tissues, was used to assess protein synthesis. The L-dopa/monoamine oxidase-inhibitor treatment was associated with 30–40% inhibition of protein synthesis. Supplementation of the dietary methionine intake by injection of this amino acid markedly diminished the inhibitory action of the L-dopa/monoamine oxidase-inhibitor treatment on protein synthesis in all fractions examined.


1990 ◽  
Vol 7 (2) ◽  
pp. 159-167
Author(s):  
Sinead O'Brien ◽  
Patrick McKeon

AbstractInterest in the monoamine oxidase (MAO) inhibitors has been revived over the past fifteen years since the publication of studies and reviews which argue their relative safety and efficacy in certain patient subgroups. The authors conclude that there is a continuing role for the MAO inhibitors in treating atypical depressive illness and panic disorders. Careful selection of patients to be commenced on MAO inhibitor treatment is advised. When prescribed alone or in combination with lithium there is evidence to support a usefulness for MAO inhibitors in depression resistant to the tricyclic antidepressants. Their efficacy in the depressed phase of bipolar affective disorder or in combination with the tricyclic antidepressants remains unproven. The risk of anaesthesia while a patient is receiving MAO inhibitor treatment may be less than heretofore believed. There is realistic hope of finding among the short-acting selective MAO inhibitors an effective antidepressant which is also free from tyramine related effects. With the increasing difficulties of evaluating new drugs on account of ethical and governmental constraints, it may however be some time before the preliminary hopeful findings can be substantiated in larger groups of patients.


1989 ◽  
Vol 4 (3) ◽  
pp. 175-181
Author(s):  
J.F. Lipinski ◽  
R.C. Alexander

SummaryThe authors have reviewed 13 published studies on methionine administration, usually in combination with a monoamine oxidase inhibitor (MAOI), to chronically psychotic patients, using modern (DSM-III) diagnostic criteria. Four of these studies contained sufficient descriptive data to allow reappraisal of the effects. The results of the review suggest that a proportion of the patients experienced the induction of a manic episode/antidepressant effects rather than the reported worsening of schizophrenia while treated with a methionine-MAOI combination. It is suggested that these observations are consistent with recent findings that S-adenosyl-L-methionine (SAMe) has antidepressant and mania-inducing effects.


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