title: Effects of alcohol on hemodynamic and cardiovascular reaction in different genotypes.
abstract: This study assessed hemodynamic changes associated with alcohol intake in people who have different sensitivities to alcohol due to an inactive form of mitochondrial aldehyde dehydrogenase (ALDH). People with ALDH2*1/*2 are more sensitive to alcohol than people with ALDH2*1/*1. Six ALDH2*1/*1 subjects and four ALDH2*1/*2 subjects participated in this study. The subjects drank whisky with water (0.4 ml/kg of ethanol). Optical topography (Hitachi Medical Corporation: ETG-100) was used to measure hemodynamic changes in an occipital region during visual stimulation. Hemodynamic changes, heart rate, mean blood pressure, and reaction time were measured 20 min before, immediately after, and 20, 40, and 60 min after alcohol intake. Breath-alcohol concentration was measured at each of the assessment points. After alcohol intake, the hemodynamic peak value, peak time, reaction time, and heart rate of the ALDH2*1/*2 subjects differed from those of the ALDH2*1/*1 subjects. The hemodynamic peak value and reaction time gradually increased 60 min after alcohol exposure, and the peak time was shortest 20 min after alcohol intake. These results might reflect different acetaldehyde levels causing changes in the reactivity of the vascular smooth muscle and cerebral activity in the visual cortex.
authors.affiliation: Department of Social and Environmental Medicine, Osaka University Graduate School of Medicine, 2-2 Yamada-oka, Suita, Osaka, 565-0871, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Obata
authors.forename: Kanehisa
authors.initials: K
authors.lastname: Morimoto
authors.forename: Hiroki
authors.initials: H
authors.lastname: Sato
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Takeshita
authors.forename: Hideo
authors.initials: H
authors.lastname: Kawaguchi
authors.forename: Hideaki
authors.initials: H
authors.lastname: Koizumi
authors.forename: Atsushi
authors.initials: A
authors.lastname: Maki
mesh_terms: D000444:Aldehyde Dehydrogenase / Q000235:genetics*; D000071396:Aldehyde Dehydrogenase, Mitochondrial; D001794:Blood Pressure / Q000187:drug effects*; D002492:Central Nervous System Depressants / Q000494:pharmacology*; D000431:Ethanol / Q000008:administration & dosage / Q000494:pharmacology*; D005260:Female; D005838:Genotype; D006339:Heart Rate / Q000187:drug effects*; D006439:Hemodynamics / Q000187:drug effects; D006801:Humans; D008297:Male; D011930:Reaction Time / Q000187:drug effects*
chemical_list: D002492:Central Nervous System Depressants; D000431:Ethanol; C096127:ALDH2 protein, human; D000444:Aldehyde Dehydrogenase; D000071396:Aldehyde Dehydrogenase, Mitochondrial