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PubMed2006

Long-term posttreatment functioning among those treated for alcohol use disorders.

This article summarizes the proceedings of a symposium that was organized and chaired by Patrick R. Clifford and presented at the 2005 Research Society on Alcoholism meeting in Santa Barbara, California. The aims of the presentation were to focus on the prediction and explanation of longer-term functioning following alcohol use disorders (AUD) treatment. Along these lines, Stephen A. Maisto, PhD, presented data (i.e., Project MATCH outpatient sample) on the relationship between drinking behavior in the first year following AUD outpatient treatment initiation and functioning at 3-year follow-up. Robert L. Stout, PhD, using data from the Extended Case Monitoring Study, analyzed long-term drinking patterns using shorter-term information. James R. McKay, PhD, examined the relationship between treatment services received and problem severities across a 2-year follow-up period. J. Scott Tonigan, PhD, served as the panel discussant.

Alcoholism↗

PubMed2002

Reactivity to ecological momentary assessment: an example using undergraduate problem drinkers.

A. A. Stone and S. Shiffman (1994) defined ecological momentary assessment (EMA) as monitoring or sampling strategies that assess phenomena at the moment they occur in natural settings, thus maximizing ecological validity while avoiding retrospective recall. To address the extent to which EMA affects the behaviors and cognitions under observation, the authors examined behavioral and motivational reactivity to EMA among male and female undergraduate problem drinkers (n = 33). Participants completed a 2-week monitoring protocol using palmtop computers as well as pre- and postmonitoring measures of their drinking behavior and motivation for change. The findings suggest that the magnitude of reactivity to EMA is small. Suggestions for future research are presented.

Adult↗

PubMed2002

Desired image of power, alcohol expectancies, and alcohol-related aggression.

Three hundred thirty-nine college students were surveyed regarding their usual drinking behavior, alcohol expectancies, desired identity of power, and experience with alcohol-related violence. Eight percent indicated having been in a fight in a bar, and 16% indicated having been in a fight while drinking in the previous year. Male heavy drinkers were more likely than female heavy drinkers to experience alcohol-related and bar violence. The belief that intoxication causes one to become aggressive was related to experiencing alcohol-related violence. However, the relationship of alcohol expectancies to alcohol-related aggression was moderated by an individual difference in the desire to be seen as powerful. Results are discussed in terms of cognitive models of alcohol expectancy development and maintenance.

Adolescent↗

PubMed2000

Acoustic startle and fear-potentiated startle in alcohol-preferring (P) and -nonpreferring (NP) lines of rats.

The objective of the present study was to determine whether alcohol-preferring P and -nonpreferring NP rats differ in their acoustic startle response and in fear-potentiated startle. In Experiment 1, male P and NP rats were tested on the startle response to acoustic stimuli ranging from 90-115 dB. Experiments 2 and 3 examined fear-potentiated startle and extinction of the response. In Experiment 2, rats received two light foot shock training sessions separated by 3-4 h. Testing consisted of ten acoustic startle (115 dB) and fear-potentiated startle (light preceding the acoustic startle) presentations administered every 24 h for 9 consecutive days. To test potentiated startle learning under reduced training conditions, a single training session was administered in Experiment 3, and a single within-session extinction test of 50 startle and 50 potentiated startle trials occurred the following day. Results of Experiment 1 indicated that P and NP rats did not differ in startle at any of the acoustic intensities tested. Following fear-potentiated startle conditioning in Experiment 2, however, both acoustic startle and potentiated startle responding were consistently greater in P than NP rats over most of the first 6 test days with P rats having approximately a 100% greater acoustic startle and 50-100% greater potentiated startle response. Moreover, following a single training session in Experiment 3, only P rats showed significant fear-conditioned startle. Additionally, P rats exhibited a 50-100% elevated acoustic startle response over that observed in NP rats. Taken together, the data indicate that, although experimentally naive male P and NP rats show similar acoustic startle responses, P rats become more responsive to both startle-alone and potentiated startle stimuli following fear conditioning. The change in general startle reactivity of the P rat following aversive conditioning, along with facilitated light foot shock learning, suggests that stress exposure may be an important variable in examining associations between anxiety and alcohol drinking behavior.

Acoustic Stimulation↗

PubMed2000

Development of short-lasting alcohol deprivation effect in sardinian alcohol-preferring rats.

Alcohol deprivation effect (ADE), defined as a temporary increase in voluntary alcohol intake following a period of alcohol abstinence, was evaluated in selectively bred Sardinian alcohol-preferring (sP) rats. Alcohol was initially offered in free choice with water for 35 consecutive days (predeprivation phase). Subsequently, one group of rats was deprived of alcohol for 1, 3, 7, 15, 30, 90 or 180 consecutive days, while the second group had continuous access to alcohol (deprivation phase). Once alcohol was re-presented, alcohol intake in alcohol-deprived rats was recorded 1 and 24 h after alcohol re-presentation and compared to that monitored in alcohol-nondeprived rats over the same time periods (postdeprivation phase). Alcohol deprivation for 3 to 30 days resulted in a significant increase in voluntary alcohol intake only in the first hour of re-access. These results demonstrate the development of ADE in sP rats. However, the rapid return of alcohol intake to control levels is discussed as evidence in favor of a set-point mechanism capable of regulating alcohol-drinking behavior in sP rats.

Alcohol Drinking↗

PubMed1994

Dopamine D2 receptor gene expression in rat lines selected for differences in voluntary alcohol consumption.

A selective breeding program has led to the establishment of the alcohol-preferring AA (Alko, Alcohol) and alcohol-avoiding ANA (Alko, Nonalcohol) rat lines. To reveal putative baseline differences in dopamine receptor gene expression and dopamine receptor binding profile in the AA and ANA rat lines, we assessed striatal D2 mRNA levels in these two rat lines. Autoradiographical studies on dopamine D1 and D2 receptors in the striatum and nucleus accumbens were also performed with [3H]SCH 23390 and [125I]iodosulpiride/[3H]spiperone, respectively. The baseline differences in D1 or D2 receptor binding and D2 receptor gene expression between AA and ANA rat lines are marginal, and are not likely to play a role in the genetic background of the differential alcohol drinking behavior of these rat lines.

Alcohol Drinking↗

PubMed1989

Drinking-related locus of control and the drinking status of urban Native Americans.

Although promising, the available data concerning drinking-related locus of control have been almost entirely limited to treatment samples of white men. The major purpose of this study was to extend our understanding by comparing the drinking-related expectancies of three groups of Native Americans: problem drinkers, nonproblem drinkers and recovered alcoholics. Multivariate analyses were employed to control statistically for important sociodemographic differences between groups and included a test of the possibility that sex moderated the relationship between drinking status and drinking expectancies. As predicted, problem drinkers reported significantly less personal control of alcohol use than either nonproblem drinkers or recovered alcoholics. There were no significant differences between nonproblem drinkers and recovered alcoholics. Native American men were found to hold significantly more external orientations towards drinking than did women. The results were discussed in terms of comparisons with the available literature, and future research needs were identified. The findings provide indirect support for current treatment philosophies that seek to modify patient perceptions of the controllability of drinking behavior in a more internal direction.

Adult↗

PubMed1990

Effects of sex, race and year in college on self-reported drinking-related problem behaviors.

This research was conducted to study the effects of sex, race, and year in college on self-reported drinking-related problem behaviors. It was hypothesized that men would report more problem behaviors than women, white students would report more than Hispanic or black students, and an interaction of sex and race would be observed. The study was conducted at a middle-sized eastern college, where 181 students anonymously filled out a 17-item questionnaire. The design was a 3 (race) x 2 (sex) x 2 (year in college) factorial. The hypotheses for sex and race were confirmed. Investigation of whether these self-reported drinking-related problem behaviors are congruent with actual behaviors requires study.

Adult↗

PubMed2003

Peri-ictal water drinking lateralizes seizure onset to the nondominant temporal lobe.

The authors describe seven patients with medically refractory temporal lobe epilepsy whose seizures were associated with peri-ictal water drinking behavior. Presurgical evaluation, including video-EEG monitoring, MRI, SPECT, and neuropsychological testing, revealed a seizure onset in the nondominant temporal lobe. All patients had an excellent outcome after epilepsy surgery. Peri-ictal water drinking may represent a lateralizing sign indicating seizure onset in the nondominant temporal lobe.

Adolescent↗

PubMed2001

Life events and alcohol consumption among mature adults: a longitudinal analysis.

OBJECTIVE: Four waves of the Health and Retirement Study were used to examine changes in alcohol consumption co-occurring and following stress associated with major health, family and employment events. METHOD: The final sample consisted of 7,731 (3,907 male) individuals between the ages of 51 and 61 at baseline. We used multinomial logit analysis to study associations between important life events and changes in alcohol consumption over a 6-year study period. Interactions between stressful life events, gender and problem drinking were also evaluated. RESULTS: Most persons (68%) did not change their use of alcohol over the entire 6 years. Hospitalization and onset of a chronic condition were associated with decreased drinking levels. Retirement was associated with increased drinking. Widowhood was associated with increased drinking but only for a short time. Getting married or divorced was associated with both increases and decreases in drinking, with a complex lag structure. A history of problem drinking influenced the association between certain life events (e.g., divorce and retirement) and changes in drinking. Gender modified the association between losing a spouse and changes in drinking. CONCLUSIONS: Even after controlling for problem drinking history, social support and coping skills, changes in drinking behavior were related to several life events occurring over a 6-year period for a national cohort of individuals in late middle-age. The magnitude of these relationships, however, varied by gender and problem drinking history.

Adaptation, Psychological↗

PubMed1990

Parental versus peer influence on adolescents' alcohol consumption.

We surveyed 1128 students from Grades 7 through 12 on their average alcohol consumption. Students' drinking behaviors were categorized into four groups: only with parents, never with parents, and also for those who drank with and without parents, their consumption when parents were present and when parents were not present. Adolescents drink less in the presence of parents. However, when parents are not present, adolescents who never drink with their parents drink less than those who drink with and without their parents.

Adolescent↗

PubMed2000

Using transtheoretical model profiles to differentiate levels of alcohol abstinence success.

Using data from 673 outpatient and 510 aftercare clients in Project MATCH, this study identified drinking-outcome-related differences in profiles across transtheoretical model (TTM) variables. Abstinent, moderate, and heavier drinking outcome groups were formed as a function of their 1-year posttreatment drinking behavior. Using profile analysis, group differences in the shapes of the mean profiles on TTM-related measures of stage and self-efficacy were found (a) for both the outpatient and aftercare populations and (b) at both the baseline and end-of-treatment time points. The use of cognitive and behavioral change processes during treatment was measured and the scores for each were included in the creation of the end of treatment profiles. The relation between number of TTM goals attained and probabilities of successful drinking outcome supports the usefulness of profile differences in predicting long-term drinking outcomes and can enable therapists to help clients set interim goals.

Adult↗

PubMed1995

Ethanol oxidizing enzymes: roles in alcohol metabolism and alcoholic liver disease.

The elucidation of nucleotide and amino acid sequences of the genes and enzymes involved in the metabolism of ethanol has led to the ability to genotype individuals simply and rapidly. Although the different isozymes were once thought to be a likely explanation for between individual differences in alcohol elimination rates, this has not been found to be the case. Other explanations that remain to be investigated include potential regulatory variants in the genes that alter the level of expression of the enzymes, and genetic influences on activity of the malateaspartate shuttle and rates of mitochondrial NADH reoxidation. However, the isozymes encoded by ADH2*2 and ALDH2*2 have been found to influence alcohol drinking behavior or alcoholism substantially. This supports the original premise that the metabolic disposition of ethanol affects individuals' responses to it. The results suggest that any additional variants might also contribute to the spectrum of individual drinking preferences. Among heavy drinkers, the influence of the isozymes on risk of alcoholic liver disease has not been found to be great, suggesting that many other factors, perhaps interacting with the enzyme polymorphisms, are involved in determining susceptibility.

Alcohol Dehydrogenase↗

PubMed2004

Recent advances in animal models of alcohol craving and relapse.

Animal models designed to examine different facets of alcohol-related behaviors have been developed to study genetic and neurobiological factors underlying alcoholism and alcohol abuse. One goal has been to develop valid, congruent, complementary animal models of alcohol craving and relapse, with the ultimate objective of assessing the effectiveness of pharmacological agents with these models. Animal models of alcohol craving include drug-induced responding (drug reinstatement), cue-induced responding, Pavlovian Spontaneous Recovery (PSR), and appetitive/consummatory responding. A primary experimental approach to study alcohol relapse has been through expression of the Alcohol Deprivation Effect (ADE) following a single deprivation or multiple deprivations. To date, five selectively bred lines of rats have been developed to study alcohol-drinking behavior. These are the ALKO/Alcohol (AA), alcohol-preferring (P), high alcohol-drinking (HAD-1 and HAD-2 replicates), and the Sardinian alcohol-preferring (sP) lines of rats. Findings thus far indicate that only the P line of rats meets all the criteria established for a valid animal model of alcoholism, with progress having been made in characterizing the AA, HAD and sP lines of rats. The focus of the current review will be to analyze the various models of alcohol craving, emphasizing the use of the Indiana University selected rat lines (P and HADs). Overall, the findings indicate substantial progress has been made in developing animal models of alcohol abuse, relapse and craving using these selectively bred rat lines, as well as outbred rats.

Alcohol Drinking↗

PubMed2000

Efficacy of dexfenfluramine in the treatment of alcohol dependence.

BACKGROUND: A substantial body of evidence supports a role for serotonin in modulating alcohol intake, which suggests that this neurotransmitter represents a promising target for pharmacotherapy development for alcohol use disorders. Dexfenfluramine. a serotonin releaser and reuptake inhibitor, decreases alcohol self-administration by rats. Its greater potency and several mechanisms of action suggest it should be more effective in treating alcohol dependence than drugs that only inhibit serotonin reuptake. METHODS: We conducted an 11 week, randomized, double-blind trial that compared oral placebo and dexfenfluramine 7.5, 15, 22.5, and 30 mg bid in 136 alcohol-dependent patients. A brief behavioral intervention was offered concurrently. RESULTS: The majority of subjects were male (72%), and the age of the group was 44 +/- 1 years (mean +/- SD). Both placebo- and drug-treated groups significantly reduced alcohol consumption compared with baseline (a 55% decrease in mean drinks per day; p < 0.01), but there were no significant differences between drug and placebo groups or dose effects for most outcome measures. CONCLUSIONS: Our results with dexfenfluramine are further evidence that serotonergic medications on their own do not significantly reduce alcohol consumption in alcohol-dependent individuals. Combination pharmacotherapy with agents that act on different receptors or neurotransmitter systems (e.g., naltrexone plus dexfenfluramine) may be one way to enhance serotonergic effects on drinking behavior and should be considered in future medication development clinical trials.

Adult↗

PubMed2001

Stimulation of voluntary ethanol intake by cannabinoid receptor agonists in ethanol-preferring sP rats.

RATIONALE: Recent studies have shown that the cannabinoid CB1 receptor antagonist, SR 141716, is capable of reducing voluntary ethanol intake in rodents, suggesting the involvement of the CB1 receptor in the neural circuitry mediating the positive reinforcing properties of ethanol. OBJECTIVES: The present study extended to the agonists the investigation on the pharmacological manipulation of ethanol intake by cannabinoid agents. METHODS: Selectively bred, Sardinian alcohol-preferring (sP) rats were offered ethanol and water under the two-bottle free choice procedure with unlimited access for 24 h/day. RESULTS: The acute administration of WIN 55,212-2 (0.5-2 mg/kg; IP) and CP 55,940 (3-30 microg/kg; IP) induced a significant, dose-dependent increase in ethanol intake. Conversely, water consumption and intake of regular food and a highly palatable sucrose solution were not affected by treatment with WIN 55,212-2 and CP 55,940. The stimulatory effect of WIN 55,212-2 and CP 55,940 on ethanol intake was completely prevented by administration of SR 141716 (0.3 mg/kg; IP) and the opioid receptor antagonist, naloxone (0.1 mg/kg; IP). CONCLUSIONS: Administration of WIN 55,212-2 and CP 55,940 promoted voluntary ethanol intake in sP rats. This effect was mediated by stimulation of the cannabinoid CB1 receptor and required the activation of the endogenous opioid system. The results of the present study add further support to the hypothesis that the cannabinoid CB1 receptor is part of the neural substrate regulating ethanol intake. These results are also discussed in terms of WIN 55,212-2 and CP 55,940 administration possibly fixing to a higher level the hedonic set-point mechanism regulating ethanol drinking behavior in sP rats.

Administration, Oral↗

PubMed1989

Dynorphin A (1-13), microinjected into the preoptic area, stimulates water intake in rats.

The effects of dynorphin A (1-13) (DYN), injected into the preoptic area, was investigated on water intake in rats. DYN at both doses of 2 and 10 nmoles significantly increased water intake for two and four hours after the injection in a dose related fashion. However, no significant change was observed in food intake. Naloxone pretreatment (0.3 mg/kg, s.c.) completely attenuated the DYN-induced stimulation of water intake. The present studies suggest that DYN in the preoptic area may play an important role in the regulation of drinking behavior, but have no effect on food intake.

Animals↗

PubMed2005

The unique relationship between fear of cognitive dyscontrol and self-reports of problematic drinking.

Research has established positive associations between anxiety sensitivity (AS) and problematic drinking in clinical samples. The present study confirmed this relationship in a nonclinical sample (N=162) and investigated which AS dimension best predicts self-reports of problematic drinking. Only one AS facet, fear of cognitive dyscontrol (FCC), was associated with symptoms of alcohol dependence, severity of drinking problems, and alcohol-related expectations of global, positive changes, sexual enhancement, and tension reduction. The possible role of depression in these relationships was also evaluated. A series of hierarchical regressions revealed that, when trait anxiety, anxious arousal, and anxious apprehension were statistically removed, depression did not contribute significant variance beyond the effects of FMC and other anxiety measures. Results suggest that FCC is uniquely associated with self-reports of problematic drinking behaviors and attitudes. Implications for tension-reduction models of alcohol are discussed.

Adolescent↗