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  • Title: Combining ondansetron and naltrexone treats biological alcoholics: corroboration of self-reported drinking by serum carbohydrate deficient transferrin, a biomarker.
    Author: Ait-Daoud N, Johnson BA, Javors M, Roache JD, Zanca NA.
    Journal: Alcohol Clin Exp Res; 2001 Jun; 25(6):847-9. PubMed ID: 11410720.
    Abstract:
    BACKGROUND: Recently, we showed by using self-report that combining ondansetron (4 microg/kg twice a day) and naltrexone (25 mg twice a day) was effective at reducing drinking and increasing abstinence among early-onset alcoholics (EOAs), who are characterized by a range of antisocial behaviors and high biological and familial disease predisposition. Here, we investigated whether the self-reported differences in drinking would be corroborated by measurements of serum carbohydrate-deficient transferrin (CDT) level, a sensitive, reliable, and well-validated marker of transient alcohol consumption. METHOD: An 8-week double-blind clinical trial was performed in which 20 EOAs were randomized to receive ondansetron (4 microg/kg twice a day) and naltrexone (25 mg twice a day) or placebo as an adjunct to weekly standardized cognitive behavioral therapy. Serum CDT was assessed at weeks 0 (baseline), 4, and 8. RESULTS: Log serum CDT was significantly lower in the ondansetron and naltrexone group (group mean, 1.44 +/- 0.076) compared with the placebo group (group mean, 1.82 +/- 0.113), as evidenced by a main effect of group [F(1,15) = 7.2, p = 0.017; effect size = 0.32], visit [F(1,16) = 11.2, p = 0.004; effect size = 0.41], and an interaction between group and visit [F(1,16) = 27.54, p < 0.001; effect size = 0.63]. CONCLUSIONS: The combination of ondansetron plus naltrexone was superior to placebo at reducing serum CDT. This corroborated our self-reported drinking data and demonstrated that the medication combination is an effective treatment for EOAs.
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