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PubMed2003

Drinking reports from collateral individuals.

BACKGROUND AND AIMS: Subject self-reports are the primary source of research and clinical data on drinking behavior. In this report, we review and summarize the current literature on the reliability and accuracy of alcohol abusers' self-reports of alcohol consumption and related behaviors in relation to similar reports provided by collateral informants. CONCLUSIONS: Recent research supports the assertion that subjects provide accurate reports about their drinking and associated consequences. When discrepancies have been observed between reports provided by subjects and collaterals, the subjects' data in almost all cases have painted a picture of poorer functioning. The greatest degree of agreement between subjects and collaterals is likely when collaterals are in frequent contact with the subject, are spouse/partners and are confident about the reports they are providing.

Adolescent↗
PubMed1985

Individual differences in anticipation of alcohol sensitivity.

Anticipations of the effect produced by a given amount of alcohol may be as important as actual responses to that amount of alcohol in determining patterns of alcohol use, yet previous research has focused only on physiological response and subjective reports of sensitivity upon administration of alcohol. In this study, the etiology of individual differences in reports of anticipated sensitivity was examined using a sample of 54 pairs of twins and adoptees for whom both members of each pair had consumed two drinks per hour for 2 hours at some time during the year before the study. Genetic influence was suggested for anticipated sensitivity to physical symptoms and coordination but not for other symptoms such as thinking problems, mood, or driving ability. The environmental influences responsible for individual differences in anticipated sensitivity are largely shared by family members, as indicated by the substantial resemblance for pairs of adoptees reared in the same family. Also explored was the correlation between anticipated sensitivity to alcohol and reported recent drinking behavior. In this sample (N = 204) it was found that an anticipation of less sensitivity related to a higher reported average number of drinks consumed per drinking session, independent of weight, sex, or age differences.

Adoption↗
PubMed1991

Techniques for evaluation and quantification of pig reproductive, ingestive, and social behaviors.

A literature survey was conducted to find papers that reported pig behavior during the period 1987 to June 1990. A total of 171 papers reporting measures of pig behavior was identified. Investigators used either descriptions of behavior or they quantified behavior. Behavior was quantified by recording frequency, durations, sequences, or bouts of behavior. Sexual behavior was often recorded as an all-or-none event (e.g., they were bred or not). Feeding behavior was studied by either weighing feeders often or by operant techniques. Operant feeding devices were commonly used to study pig feeding and drinking behaviors. Social behavior was studied either as interactions among established groups or when pigs fought after grouping. In either case, behavioral frequencies or durations were often reported. A large number of papers documented studies of maternal-neonatal interactions, teat orders, and animal care issues. Only a few studies reported mechanisms controlling pig behavior. Because few studies investigated behavior-genetics or physiological mechanisms controlling pig behavior, these areas of investigation hold great opportunity for future improvements in pork production.

Animals↗
PubMed1987

Opioids in the regulation of food intake and energy expenditure.

This paper and the following four papers summarize a symposium on the role of opioids in regulation of feeding, body weight, and energy expenditure. The central sites of opioid action are discussed, as is opioid activity in invertebrates, large animals, and humans. This paper provides a historical review of developments in the field from the early concepts of an endogenous opioid system to the current understanding of multiple receptor types and their interaction in regulating ingestive behavior. Opioids from all three opioid families may stimulate food intake, and some evidence exists that opioids may stimulate energy expenditure. Eating and drinking behavior is very complex and involves a number of components. Our understanding of the role of opioids in this process is shallow, and future research must be designed carefully to evaluate individual components of ingestive behavior.

Animals↗
PubMed2003

The validity of self-reports of alcohol consumption: state of the science and challenges for research.

AIMS: To review three topics pertaining to the validity of alcohol self-reports: factors that influence response accuracy; the relative merits of different self-report approaches; and the utility of using alternative measures to confirm verbal reports. FINDINGS: Response behavior is influenced by the interaction of social context factors, respondent characteristics, and task attributes. Although research has advanced our knowledge about self-report methods, many questions remain unanswered. In particular, there is a need to investigate how task demands interact with different patterns of drinking behavior to affect response accuracy. There is also a continuing need to use multiple data sources to examine the extent of self-report response bias, and to determine whether it varies as a function of respondent characteristics or assessment timing. CONCLUSION: Self-report methods offer a reliable and valid approach to measuring alcohol consumption. The accuracy of such methods, however, can be improved by research directed at understanding the processes involved in response behavior.

Alcohol Drinking↗
PubMed2000

Integrating person-centered and variable-centered approaches in the study of developmental courses and transitions in alcohol use: introduction to the special section.

This special section consists of research from the symposium "Integrating Person-Centered and Variable-Centered Approaches to the Study of Developmental Courses and Transitions in Alcohol Use," presented at the 1999 Annual Meeting of the Research Society on Alcoholism. The section focuses on ways to integrate variable-centered and person-centered approaches to better understand longitudinal trajectories of alcohol use and associated problems. Our aim is to increase awareness and discussion of alternative conceptual and quantitative approaches that involve both a person-centered and a variable-centered component, and to make these methods more accessible to alcohol and other drug researchers. The first paper provides a general latent variable modeling framework within which to conceptualize developmental questions that involve the combination of continuous latent variables and categorical variables that represent classifications of individuals into meaningful subgroups. This is followed by three empirical papers that use integrative methods to examine early adult outcomes of adolescent binge drinking; potential mediators of familial alcoholism effects on alcohol and tobacco use disorder comorbidity; and the ability of psychopathology, substance use, and parental history of alcohol problems to predict individual differences in the likelihood of transitions in drinking behavior during adolescence. The section concludes with a discussion of the statistical basis for integrating person-centered and variable-centered methods, a comparison of study findings, and directions for future research.

Adult↗
PubMed2001

Effects of raclopride in the nucleus accumbens on ethanol seeking and consumption.

BACKGROUND: Nucleus accumbens dopamine has been shown to play a role in the processing of behaviorally relevant stimuli and to mediate ethanol-reinforced responding. Previous research that used a fixed-ratio schedule of responding maintained by the presentation of small dippers (0.1 ml) of ethanol demonstrated that the dopamine D2 antagonist, raclopride, decreased total responding for ethanol by both delaying the onset of responding and causing the early termination of lever-press behavior. Because these studies required animals to continuously respond to obtain access to small amounts of ethanol over a period of self-administration, this procedure assessed a combination of appetitive (seeking) and consummatory (drinking) behavior. The paradigm used in the present study separated the appetitive or seeking response from the consummatory response to assess the effects of raclopride on both types of ethanol-related behaviors. METHODS: Male Long-Evans rats were trained to emit a fixed number of lever-press responses that resulted in access to a drinking tube that contained 10% ethanol for 20 min, once each day. We measured the effects of microinjections of raclopride (1.0, 3.0, and 10.0 microg/subject) into the nucleus accumbens, before the sessions, on appetitive and consummatory responding. RESULTS: Raclopride delayed the onset of ethanol-seeking (appetitive responding) at all doses and decreased the number of responses made at the low and high doses. The rate of responding, however, was unaffected. Raclopride had no effect on the latency to begin consuming ethanol or on any of the characteristics of the initial bout of ethanol intake at all doses tested. Total ethanol intake was decreased, after an initially "normal" pattern of self-administration, following only the highest dose of raclopride. Mean ethanol intake (g/kg) was 0.54 (+/-0.03) after no injection, 0.51 (+/-0.04) after sham treatment, and 0.38 (+/-0.05) after 10 microg of raclopride. CONCLUSIONS: The procedural separation of the seeking and intake responses used in this experiment allowed us to assess the effects of dopamine receptor antagonism in the nucleus accumbens on these two different behaviors. Overall, appetitive responding that preceded the delivery of an ethanol solution was more sensitive to raclopride treatment than was consummatory responding. These findings are consistent with a stimulus-processing function of the mesolimbic dopamine system.

Alcohol Drinking↗
PubMed2004

Dopamine and serotonin content in select brain regions of weanling and adult alcohol drinking rat lines.

The objective of the present study was to examine innate differences in the tissue content of dopamine (DA), serotonin (5-HT) and their metabolites, 3,4-dihydroxyphenylacetic acid (DOPAC), homovanillic acid (HVA) and 5-hydroxyindoleacetic acid (5-HIAA) in five brain regions of weanling and adult alcohol-preferring (P), alcohol-nonpreferring (NP), high-alcohol-drinking (HAD) and low-alcohol-drinking (LAD) selected rat lines. Adult male and weanling (postnatal day 25) male rats were killed by decapitation and brains were rapidly dissected for the following regions: olfactory tubercles (OTU), nucleus accumbens (ACB), septum (SEP), anterior cerebral cortex (ACTX) and amygdala (AMYG). Tissue extracts were assayed by HPLC with electrochemical detection. Due to significantly higher content levels in the adults, adult and weanling animals were analyzed separately. Significant differences were found in the ACB and OTU between the adult lines in both DA and 5-HT content, with P and HAD rats having lower levels than NP and LAD rats, respectively. Significant differences in DA content between the weanling lines were also found in the OTU, with P and HAD rats having lower DA levels than NP and LAD rats, respectively. These results confirm previous findings of an association between innate low DA content in select limbic regions and high alcohol drinking behavior.

Age Factors↗
PubMed1994

Alcohol consumption and carotid atherosclerosis: evidence of dose-dependent atherogenic and antiatherogenic effects. Results from the Bruneck Study.

BACKGROUND AND PURPOSE: Although a variety of epidemiological studies have suggested a U-shaped association between alcohol and cardiovascular disease, controversy still surrounds the role of atherogenesis in the mediation of alcohol effects. METHODS: Carotid atherosclerosis was measured with a sensitive and reproducible B-mode score in a random sample of 460 men drawn from the Bruneck Study (baseline examination in 1990). RESULTS: The age-adjusted relation between alcohol and carotid artery disease was U shaped, with light drinkers facing a lower atherosclerosis risk (odds ratio, 0.44; 95% confidence interval, 0.23 to 0.85; P = .01) than either abstainers (odds ratio, 1.00) or heavy drinkers (odds ratio, 2.78; 95% confidence interval, 1.32 to 5.84; P < .01). The association was not explained by the lifestyle of alcohol consumers (smoking) or inclusion of former (heavy) drinkers in the reference group. The effect of alcohol was modified by drinking behavior (type of beverage). Approximately a quarter of the atherosclerosis risk caused by severe alcohol consumption was mediated by the risk profile associated with drinking, whereas the apparent beneficial effect of low alcohol intake emerged independent of conventional risk attributes. CONCLUSIONS: Our results support the hypothesis that adverse and beneficial effects of alcohol on cerebrovascular disease are mediated in part by analogous atherogenic and antiatherogenic properties.

Adult↗
PubMed1990

Prediction of adults' drinking patterns from the drinking of their parents.

While studies have shown relationships between adolescent and parental drinking patterns, it is not known if these parental influences are maintained when the children are adults and further removed from early influences. A representative general population sample of 6,364 adults living in New York State were interviewed regarding their current drinking as well as about their family structure and the drinking patterns of their parents while they were growing up. A logit modeling analysis revealed that natural father's drinking while growing up, natural mother's drinking while growing up, family structure (father present or not) and sex of the respondent were all significant predictors of current heavy drinking of adults even while controlling for all of the other variables in the model. It is concluded that early family influences may have long-term consequences on drinking behaviors.

Adolescent↗
PubMed2005

Behavioral effects of 8-OH-DPAT injections into pontine and mesencephalic areas containing 5-HT-immunoreactive perikarya in the pigeon.

This study examined the distribution of 5-HT-immunoreactive perikarya (5-HT-IRp) and the effects of local injections of 8-OH-DPAT into 5-HT-IRp-containing pontine and mesencephalic regions on feeding and drinking behaviors in free-feeding pigeons. When infused into the midline 5-HT-IRp-containing areas, 8-OH-DPAT (6.1 nmol) reliably elicited drinking and, to a lesser extent, feeding responses during the first hour after injection. These responses were significantly higher than the ingestive indexes observed (1) after vehicle (ascorbic acid 0.1%, 200 nl) injections at the same sites and (2) after 8-OH-DPAT injections into adjacent sites devoid of 5-HT-IRp. Increases in drinking were proportionally higher than those observed in feeding and a significant negative correlation was observed between water and food after midline 8-OH-DPAT injections. Similar dipsogenic responses were observed after injections of different 8-OH-DPAT doses (0.6, 2.0, and 6.1 nmol). Pretreatment with local injections of p-MPPI (an antagonist of 5-HT1A receptors) attenuated the ingestive responses evoked by 8-OH-DPAT injections. Injections of 8-OH-DPAT into lateral 5-HT-IRp-containing sites evoked only inconsistent and weak ingestive responses. These results indicate that 5-HT1A receptor-mediated circuits located in the midline superior raphe system of the pigeon may play an important role in mechanisms controlling water intake, similar to that observed in mammals.

8-Hydroxy-2-(di-n-propylamino)tetralin↗
PubMed2005

Gender differences in predicting high-risk drinking among undergraduate students.

The purpose of this study was to examine gender differences in college students' high-risk drinking as measured by an estimated blood alcohol concentration (eBAC) based on gender, height, weight, self-reported number of drinks, and hours spent drinking. Using a developmental/contextual framework, high-risk drinking is conceptualized as a function of relevant individual characteristics, interpersonal factors, and contextual factors regularly mentioned in the college drinking literature. Individual characteristics include race, gender, and age; interpersonal characteristics include number of sexual partners and having experienced forced sexual contact. Finally, contextual factors include Greek membership, living off-campus, and perception of peer drinking behavior. This study is a secondary data analysis of 1,422 students at a large university in the Southeast. Data were gathered from a probability sample of students through a mail survey. A three-step hierarchical logistic regression analysis showed gender differences in the pathway for high-risk drinking. For men, high-risk drinking was predicted by a combination of individual characteristics and contextual factors. For women, interpersonal factors, along with individual characteristics and contextual factors, predicted high-risk drinking, highlighting the importance of understanding female sexual relationships and raising questions about women's risk-taking behavior. Implications for prevention and assessment are discussed.

Adolescent↗
PubMed1988

Cigarette smoking and alcohol consumption during pregnancy by Danish women and their spouses--a potential source of fetal morbidity.

The relationship between cigarette smoking and alcohol consumption behavior during pregnancy was examined in a select group of Danish women and their spouses. Five-hundred consecutive women who had uncomplicated pregnancies and delivered full-term babies were interviewed 3+ days postpartum. Information was collected about smoking and drinking behavior of all household members during pregnancy. We found (1) a high percentage of Danish women (70%) and their spouses (80%) consume alcohol during pregnancy, and (2) a significant correlation between maternal and paternal smoking (r = .25, P .0001) and maternal and paternal drinking (r = .35, P .0001). These data suggest that even though the potential dangers of cigarette smoking and alcohol consumption during pregnancy have been well publicized, there is still a high percentage of women who participate in such behaviors. There may also exist an important role for the father in affecting these two behaviors and therefore indirectly affecting fetal development.

Adolescent↗
PubMed2006

Gender differences in associations between depressive symptoms and patterns of substance use and risky sexual behavior among a nationally representative sample of U.S. adolescents.

OBJECTIVE: This study uses a cluster analysis of adolescents, based on their substance use and sexual risk behaviors, to 1) examine associations between risk behavior patterns and depressive symptoms, stratified by gender, and 2) examine gender differences in risk for depression. METHODS: Data are from a nationally representative survey of over 20,000 U.S. adolescents. Logistic regression was used to examine the associations between 16 risk behavior patterns and current depressive symptoms by gender. RESULTS: Compared to abstention, involvement in common adolescent risk behaviors (drinking, smoking, and sexual intercourse) was associated with increased odds of depressive symptoms in both sexes. However, sex differences in depressive symptoms vary by risk behavior pattern. There were no differences in odds for depressive symptoms between abstaining male and female adolescents (OR = 1.07, 95% CI 0.70-1.62). There were also few sex differences in odds of depressive symptoms within the highest-risk behavior profiles. Among adolescents showing light and moderate risk behavior patterns, females experienced significantly more depressive symptoms than males. CONCLUSIONS: Adolescents who engage in risk behaviors are at increased risk for depressive symptoms. Girls engaging in low and moderate substance use and sexual activity experience more depressive symptoms than boys with similar behavior. Screening for depression is indicated for female adolescents engaging in even experimental risk behaviors.

Adolescent↗
PubMedDate not supplied

Atriopeptin prevents angiotensin II-stimulated glucose utilization in the subfornical organ.

Previous studies have shown that angiotensin II (ANG II) increases glucose utilization in the subfornical organ and stimulates drinking behavior. We investigated with the deoxyglucose method whether atriopeptin III, an atrial natriuretic peptide (ANP), would prevent this enhanced glucose metabolism and interfere with the drinking response in the presence of ANG II. Two rat models with high circulating levels of ANG II were studied: the homozygous Brattleboro and ANG II-infused Sprague-Dawley rats. ANP decreased the normally enhanced glucose utilization in the subfornical organ in the Brattleboro rat and inhibited ANG II-stimulated glucose metabolism in the subfornical organ of Sprague-Dawley rats. This effect was accompanied by decreased ANG II-stimulated water intake. These findings indicate that ANP may act at the level of subfornical organ to antagonize the dipsogenic action of ANG II.

Angiotensin II↗
PubMed1997

Effects of systemic interleukin-1beta administration on daily drinking and renal excretory function in conscious rats.

To elucidate the roles of interleukin-1beta (IL-1beta), a cytokine with several diverse actions, in the control of body fluid balance, its effects on daily drinking behavior and renal excretory function were examined in conscious rats. Administration of IL-1beta (4 microg/kg, I.P.) resulted in the suppression of both daily drinking and food intake and a decrease in daily urinary sodium and potassium excretion, but had no effect on urine volume. The IL-1beta-induced decrease in sodium excretion was abolished in renal-denervated rats. Kainic acid was then injected into the anteroventral third ventricle region, including the organum vasculosum of the lamina terminalis, to examine whether neurons in this region are involved in the IL-1beta-induced responses; the effects on daily drinking and urinary sodium and potassium excretion were abolished, whereas the effects on food intake, although attenuated, were still present. In contrast, electrical lesion of the subfomical organ did not affect the IL-1beta-induced responses. Thus, IL-1beta seems exert its effects on body fluid balance at several distinct sites in the central nervous system.

Animals↗
PubMed2002

Naltrexone improves outcome of a controlled drinking program.

Naltrexone is widely used in therapeutic programs with abstinence as a goal. However, it has been used in only a few studies aimed at reducing alcohol consumption. The purpose of this study was to evaluate the efficacy of naltrexone as an adjunct in controlled drinking programs. This was an open randomized study of 12 weeks duration that compared two therapeutic strategies: use of naltrexone in a controlled drinking program (NTX+CD) and the controlled drinking program alone (CD), without NTX. Each group comprised 30 male patients with mild alcohol dependence. During treatment, there were no differences between groups in drinking behavior, though the NTX+CD group showed significantly less craving. In the 12-month follow-up period, the NTX+CD group showed significantly fewer drinking days and heavy drinking days and less craving than the CD group. The results of this study suggest a role for naltrexone in controlled drinking programs.

Adult↗