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  • Title: The effect of red wine on plasma leptin levels and vasoactive factors from adipose tissue: a randomized crossover trial.
    Author: Djurovic S, Berge KE, Birkenes B, Braaten Ø, Retterstøl L.
    Journal: Alcohol Alcohol; 2007; 42(6):525-8. PubMed ID: 17670801.
    Abstract:
    AIMS: It has been reported that alcohol has multiple effects on appetite. To elucidate potential mechanisms we measured the levels of plasma leptin and the vasoactive factors after red wine intake. METHODS: We conducted a randomized crossover trial to study the effect of red wine on the levels of leptin, TNF-alpha, TGF- beta(1), IL-6, ICAM-1, and VCAM-1 in healthy, non-smoking individuals. The subjects were randomized to drinking one glass of red wine (150 ml, 15 g alcohol) every day ('wine period') or to undergo a period of total abstention from alcohol ('abstention period'). After 3 weeks they switched the intervention group. Eighty-seven volunteers completed the study (mean age 50 years). RESULTS: After 3 weeks' daily intake of red wine, plasma leptin was significantly increased (from 6308 pg/ml to 7402 pg/ml, P = 0.05). There was a marked gender difference, as leptin levels increased only in females (P = 0.012). When calculated as leptin/body mass index (BMI) ratio, the trend and results were similar. Red wine consumption had no significant effect on other vasoactive factors measured in this study. CONCLUSION: Red wine increases levels of the appetite-regulating hormone leptin in females, but not in males. Whether red wine has an effect on appetite-regulation in its own right, remains to be solved.
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