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Preliminary Study With Matched Control Subjects

Marc A. Schuckit, MD; Edward Shaskan, MD; Jane Duby; Ralph Vega; Melissa Moss

Arch Gen Psychiatry. 1982;39(2):137-140.

Abstract
• Platelet monoamine oxidase (MAO) activity levels were determined before and 180 minutes after ingestion of ethyl alcohol in 30 healthy men aged 21 to 25 years. The subjects included 15 men with alcoholic first-degree relatives who were matched by demography, height-weight ratio, and drinking history with 15 control subjects who had no family history of alcoholism. There was a nonsignificant trend toward lower platelet MAO activities at baseline and after ethyl alcohol ingestion in the group with alcoholic relatives when compared with the control subjects who had no family history of alcoholism. With an arbitrary MAO cutoff of 5.24 nmole/mg of protein per hour, eight of the 15 subjects with alcoholic relatives and 12 of the 15 without alcoholic relatives were correctly identified. However, because of the number of false-positive and false-negative findings, the results have limited clinical usefulness.

Author Affiliations
From the University of California, San Diego, School of Medicine (Dr Schuckit and Ms Moss), the Veterans Administration Medical Center, San Diego (Dr Schuckit and Ms Duby), the University of Connecticut School of Medicine, Farmington (Dr Shaskan), and the University of Utah School of Medicine, Salt Lake City (Mr Vega).

Footnotes
Accepted for publication June 15, 1981.

Reprint requests to Veterans Administration Medical Center (116A), 3350 La Jolla Village Dr, San Diego, CA 92161 (Dr Schuckit).

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