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  • Title: Platelet MAO in subtypes of alcoholism.
    Author: Sullivan JL, Baenziger JC, Wagner DL, Rauscher FP, Nurnberger JI, Holmes JS.
    Journal: Biol Psychiatry; 1990 Apr 15; 27(8):911-22. PubMed ID: 2331498.
    Abstract:
    A number of investigators have observed low platelet monoamine oxidase (MAO) activity in alcoholism. There is also preliminary evidence suggesting that low enzyme activity is principally associated with one of two putative subtypes of alcohol dependence, i.e., type II (male limited). The results of this study are consistent with two previous reports of reduced platelet MAO activity in type II male alcoholics as compared with type I male alcoholics and normal, healthy male controls. Type I (milieu-limited) alcoholics showed a smaller reduction in enzyme activity. The observed differences do not appear to be related to concurrent use of other psychoactive substances, characteristic differences in age between type I alcoholics and type II alcoholics, antisocial personality disorder, or variation in platelet size. Low platelet MAO activity in alcoholics is possibly related to both state and trait factors and may be a useful biochemical measure to assist with subtyping.
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