High serum carotenoids are inversely associated with serum gamma-glutamyltransferase in alcohol drinkers within normal liver function.
| Autor: | Sugiura M; Department of Citrus Research, National Institute of Fruit Tree Science, 485-6 Shimizu-Okitsu-nakachou, Shizuoka-shi, Shizuoka 424-0292, Japan. msugiura@affrc.go.jp, Nakamura M, Ikoma Y, Yano M, Ogawa K, Matsumoto H, Kato M, Ohshima M, Nagao A |
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| Jazyk: | angličtina |
| Zdroj: | Journal of epidemiology [J Epidemiol] 2005 Sep; Vol. 15 (5), pp. 180-6. |
| DOI: | 10.2188/jea.15.180 |
| Abstrakt: | Background: Many studies have reported that the consumption of alcohol induces the generation of free radicals. Moreover, recent studies suggest that serum gamma-glutamyltransferase (gamma-GTP) within its normal range might be an early marker of oxidative stress. In this study, we tested the hypothesis that serum antioxidant carotenoids would be inversely associated with serum gamma-GTP in alcohol drinkers within normal liver function. Methods: A total of 266 Japanese men who had received health examination in 2003 participated in the study. The associations of serum gamma-GTP and serum-carotenoid concentrations stratified by alcohol intake levels were evaluated cross-sectionally. The participants were divided into three groups according to their ethanol intake level (non-drinker, less than 1 g/day; light drinker, 1-25 g/day; and moderate and heavy drinkers, 25+ g/day). The multivariate-adjusted geometric means of the serum gamma-GTP concentrations in each tertile of the serum-carotenoid concentrations were calculated after adjustment for ethanol intake, age, body mass index, total cholesterol, triacylglycerols, current tobacco use, and habitual exercise. Results: The serum gamma-GTP concentrations were significantly high in accordance with the ethanol intake level. In moderate and heavy drinkers, the multivariate-adjusted geometric means of serum gamma-GTP concentrations were significantly low in accordance with the tertiles of the serum lycopene, alpha-carotene, beta-carotene, and beta-cryptoxanthin concentrations. Conclusions: The serum antioxidant carotenoids were inversely associated with alcohol-induced increases of serum gamma-GTP in moderate and heavy drinkers within normal liver function. |
| Databáze: | MEDLINE |
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