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Abstract
Approximately 50% of Asians experience a facial flush following alcohol ingestion.
These individuals have an inactive form of mitochondrial aldehyde dehydrogenase (ALDH)
encoded by the ALDH2∗2 allele. This study matched 15 flushing and 15 nonflushing Asian
men on demographics and drinking histories. The 30 subjects were genotyped for ALDH2
and were evaluated both before and following placebo and 0.75 ml/kg alcohol. The two
groups did not differ significantly on blood alcohol concentrations after drinking,
but did differ in electroencephalographic (EEG) response on the falling phase of the
blood alcohol curve. Nonflushing subjects displayed significant increases in slow-alpha
EEG activity (7.5–9.0 Hz) at 90 and 150 min post-alcohol consumption, compared to
flushing subjects who did not show characteristic increases in this frequency band
at these timepoints. These data suggest flushers, those with at least one ALDH2∗2
allele, have less of slow-alpha wave EEG response to alcohol than nonflushers with
ALDH2∗1/2∗1 genotype.
Keywords
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Article info
Publication history
Received in revised form:
April 8,
1993
Received:
September 19,
1992
Footnotes
☆Supported in part by Grants 00098 and 06095 from National Institute on Alcohol Abuse and Alcoholism and a General Clinical Research Center Grant 00833.
Identification
Copyright
© 1993 Published by Elsevier Inc.