MAO inhibition and clinical response in depressed patients treated with phenelzine. 1990

D B Bresnahan, and G N Pandey, and P G Janicak, and R Sharma, and R A Boshes, and S S Chang, and B L Gierl, and J M Davis
Department of Psychiatry, Medical College of Wisconsin, Milwaukee 53226.

The authors studied clinical response in 47 depressed inpatients treated with the monoamine oxidase (MAO) inhibitor phenelzine. Improvement on ratings for depression at Week 2 of treatment was correlated with percent MAO inhibition at Week 2 (r = .35, p less than .03), and the modest positive correlation that was found remained after the authors adjusted for the effects of baseline scores on the Hamilton Rating Scale for Depression, dose (mg/kg), and psychosis (partial correlation = .49, p less than .002). Further, the 23 patients ultimately classified as responders had a significantly greater percent MAO inhibition at Week 2 than did the 24 nonresponders (t = 3.02, p less than .005). Thus, the rate of MAO inhibition at Week 2 was significantly correlated with clinical improvement at Week 2 and final response status. These findings could not be explained by other potentially moderating variables such as sex, age, endogenicity, recurrence, and incapacitation.

UI MeSH Term Description Entries
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D008995 Monoamine Oxidase An enzyme that catalyzes the oxidative deamination of naturally occurring monoamines. It is a flavin-containing enzyme that is localized in mitochondrial membranes, whether in nerve terminals, the liver, or other organs. Monoamine oxidase is important in regulating the metabolic degradation of catecholamines and serotonin in neural or target tissues. Hepatic monoamine oxidase has a crucial defensive role in inactivating circulating monoamines or those, such as tyramine, that originate in the gut and are absorbed into the portal circulation. (From Goodman and Gilman's, The Pharmacological Basis of Therapeutics, 8th ed, p415) EC 1.4.3.4. Amine Oxidase (Flavin-Containing),MAO,MAO-A,MAO-B,Monoamine Oxidase A,Monoamine Oxidase B,Type A Monoamine Oxidase,Type B Monoamine Oxidase,Tyramine Oxidase,MAO A,MAO B,Oxidase, Monoamine,Oxidase, Tyramine
D010043 Outcome and Process Assessment, Health Care Evaluation procedures that focus on both the outcome or status (OUTCOMES ASSESSMENT) of the patient at the end of an episode of care - presence of symptoms, level of activity, and mortality; and the process (ASSESSMENT, PROCESS) - what is done for the patient diagnostically and therapeutically. Outcome and Process Assessment (Health Care),Donabedian Model,Donabedian Triad,Outcome and Process Assessment,Structure Process Outcome Triad,Model, Donabedian,Triad, Donabedian
D010624 Phenelzine One of the MONOAMINE OXIDASE INHIBITORS used to treat DEPRESSION; PHOBIC DISORDERS; and PANIC. Fenelzin,2-Phenethylhydrazine,Nardelzine,Nardil,Phenelzine Sulfate,Phenethylhydrazine,beta-Phenylethylhydrazine,2 Phenethylhydrazine,Sulfate, Phenelzine,beta Phenylethylhydrazine
D011569 Psychiatric Status Rating Scales Standardized procedures utilizing rating scales or interview schedules carried out by health personnel for evaluating the degree of mental illness. Factor Construct Rating Scales (FCRS),Katz Adjustment Scales,Lorr's Inpatient Multidimensional Psychiatric Rating Scale,Wittenborn Scales,Edinburgh Postnatal Depression Scale,Mini International Neuropsychiatric Interview
D001792 Blood Platelets Non-nucleated disk-shaped cells formed in the megakaryocyte and found in the blood of all mammals. They are mainly involved in blood coagulation. Platelets,Thrombocytes,Blood Platelet,Platelet,Platelet, Blood,Platelets, Blood,Thrombocyte
D003866 Depressive Disorder An affective disorder manifested by either a dysphoric mood or loss of interest or pleasure in usual activities. The mood disturbance is prominent and relatively persistent. Depression, Endogenous,Depression, Neurotic,Depression, Unipolar,Depressive Syndrome,Melancholia,Neurosis, Depressive,Unipolar Depression,Depressions, Endogenous,Depressions, Neurotic,Depressions, Unipolar,Depressive Disorders,Depressive Neuroses,Depressive Neurosis,Depressive Syndromes,Disorder, Depressive,Disorders, Depressive,Endogenous Depression,Endogenous Depressions,Melancholias,Neuroses, Depressive,Neurotic Depression,Neurotic Depressions,Syndrome, Depressive,Syndromes, Depressive,Unipolar Depressions
D005260 Female Females
D006760 Hospitalization The confinement of a patient in a hospital. Hospitalizations

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