Serum prolactin response to the serotonin agonist D-fenfluramine were measured in 19 DSM-111-R male alcoholics, 2.5 or more weeks postalcohol withdrawal. Prolactin responses were compared with nine healthy nonalcoholic male controls. After an overnight fast, each subject received 30 mg of D-fenfluramine orally, and serial samples of serum prolactin were taken over a 4-hr period. D-fenfluramine caused a significantly attenuated peak delta-prolactin response in the alcoholics relative to the controls (p = 0.05). A repeated-measures ANOVA of delta-prolactin yielded a significant within-subjects effect of time (p < 0.05), a within-subjects effect of group that reached significance (p = 0.05), and a nonsignificant group by time interaction. The delta-prolactin value at time points 60 and 240 min postadministration of the probe was significantly attenuated in the alcoholic group, with p < 0.05. There was also some evidence for a diminished serotonergic response in those alcoholics with a negative family history. The delta-prolactin response did not correlate with subjects' age, duration of alcohol use, duration of abstinence from alcohol, severity of alcohol dependence, or age of onset. Results imply a relative subsensitivity of the serotonin system in postwithdrawal alcoholics, and this may be primarily of the 5-HT2 receptor.

OBJECTIVE: The detrimental effects of alcohol misuse and dependence are well documented as an important public-health issue among American Indian adults. This preponderance of problem-centered research, however, has eclipsed some important resilience factors associated with life course patterns of American Indian alcohol use. In this study, we investigate the influence of enculturation, and each of the three component dimensions (traditional practices, traditional spirituality, and cultural identity) to provide a stringent evaluation of the specific mechanisms through which traditional culture affects alcohol cessation among American Indians. METHOD: These data were collected as part of a 3-year lagged sequential study currently underway on four American Indian reservations in the upper Midwest and five Canadian First Nation reserves. The sample consisted of 980 Native American adults, with 71% women and 29% men who are parents or guardians of youth ages 10-12 years old. Logistic regression was used to assess the unique contribution of the indicators of alcohol cessation. Excluding adults who had no lifetime alcohol use, the total sample size for present analysis is 732 adult respondents. RESULTS: The findings show that older adults, women, and married adults were more likely to have quit using alcohol. When we examined the individual components of enculturation, two of the three components (participation in traditional activities and traditional spirituality) had significantly positive effects on alcohol cessation. CONCLUSIONS: Although our findings provide empirical evidence that traditional practices and traditional spirituality play an important role in alcohol cessation, the data are cross-sectional and therefore do not indicate direction of effects. Longitudinal studies are warranted, in light of the work that concludes that cultural/spiritual issues may be more important in maintaining sobriety once it is established rather than initiating it.