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Visual outcome of pressurised bottled drinks related eye injuries in Ibadan.

Records of 15 patients presenting with pressurised bottled drinks related eye injuries between January 1996 and 2001 were reviewed to identify factors contributing to accidental eye injuries from pressurised bottled drinks, reason for poor outcome and to make recommendations. In all, 16 eyes of 15 patients were studied out of which 7 were males (M:F, ratio 1:1.1). Age range, 3 years-49 years, mean 23.6 years. The majority of those affected were students 46.7%, and traders 26.7%. The commonest activity leading to injury was explosion during the process of arranging the bottles or crates of drinks (43.8%) and accidental fall of bottle from hand or height (37.5%). Drinks implicated include, Coca-cola 50%, beer 25%, others (Fanta, Legend stout, Mirinda, Grape juice) 25%. Complications arising from the injury included, hyphema 43.8%, vitreous haemorrhage 12.5%, and retinal detachment 12.5%. The globes were retained in 12 (75%) cases, 3 defaulted and one eye became phthisical. The final visual acuity was 6/18 or better in 25%, between 6/24 and 6/60 in 12.5% and less than 6/60 in 31.3%. The final visual acuities of three patients who were lost to follow up were unknown. Reason for poor visual outcome include severity of injury with resultant serious complications, and delay with instituting surgical treatment. Eye injuries resulting from exploding bottled drinks are potentially very serious and therefore best prevented. It is recommended that conversion of bottled drinks to canned or plastic containers be considered by the manufacturers. Greater care should be taken with the handling of bottled drinks by the sellers, factory workers and consumers. High risk occupations such as bottled drink sellers and factory workers may need to wear protective goggles during handling. Public health education on need to seek prompt and proper treatment as well as need for Government to institute the National health insurance scheme to cater for indigent patients.

Adolescent↗

[Presence and viability of Giardia spp. and Cryptosporidium spp. in drinking water and wastewater in the high basin of Bogotá river].

INTRODUCTION: Faecal contamination in wastewater and drinking water is linked to the dissemination of water related diseases. The bacteria, virus and parasites present in drinking water are responsible for substantial morbidity and mortality, especially among infants. Giardia spp. and Cryptosporidium spp. were the organisms selected as parasite contamination indicators. Their presence serves as a useful tool for evaluating water quality and determining sanitary risk. At present, in Colombia, concentration and occurrence of these parasites is unknown and an immediate assessment was considered necessary. OBJECTIVE: Protozoan presence was determined in five sampling stations in the Bogotá river upper basin and in two drinking water plants near the same area. MATERIALS AND METHODS: The techniques applied for counting encysted forms consisted of inorganic flocculation for wastewater or filtration for drinking water. Fluorogenic vital dyes tested for viability. RESULTS: The presence of Cryptosporidium spp. was confirmed in two of the sampled stations and at two of the drinking water plants. Giardia spp. was found at two of the drinking water plants but not at the sampled stations. Viable cysts were found for Cryptosporidium spp. in one of the samples from the Bogotá river, but only inviable exemplars were obtained from the drinking water plants. CONCLUSIONS: The results revealed protozoan presence in drinking and residual water implying the presence of a potential sanitary hazard.

Animals↗

Screening for problem drinking: comparison of CAGE and AUDIT. Ambulatory Care Quality Improvement Project (ACQUIP). Alcohol Use Disorders Identification Test.

OBJECTIVE: To compare self-administered versions of three questionnaires for detecting heavy and problem drinking: the CAGE, the Alcohol Use Disorders Identification Test (AUDIT), and an augmented version of the CAGE. DESIGN: Cross-sectional surveys. SETTING: Three Department of Veterans Affairs general medical clinics. PATIENTS: Random sample of consenting male outpatients who consumed at least 5 drinks over the past year ("drinkers"). Heavy drinkers were oversampled. MEASUREMENTS: An augmented version of the CAGE was included in a questionnaire mailed to all patients. The AUDIT was subsequently mailed to "drinkers." Comparison standards, based on the tri-level World Health Organization alcohol consumption interview and the Diagnostic Interview Schedule, included heavy drinking (> 14 drinks per week typically or > or = 5 drinks per day at least monthly) and active DSM-IIIR alcohol abuse or dependence (positive diagnosis and at least one alcohol-related symptom in the past year). Areas under receiver operating characteristic curves (AUROCs) were used to compare screening questionnaires. MAIN RESULTS: Of 393 eligible patients, 261 (66%) returned the AUDIT and completed interviews. For detection of active alcohol abuse or dependence, the CAGE augmented with three more questions (AUROC 0.871) performed better than either the CAGE alone or AUDIT (AUROCs 0.820 and 0.777, respectively). For identification of heavy-drinking patients, however, the AUDIT performed best (AUROC 0.870). To identify both heavy drinking and active alcohol abuse or dependence, the augmented CAGE and AUDIT both performed well, but the AUDIT was superior (AUROC 0.861). CONCLUSIONS: For identification of patients with heavy drinking or active alcohol abuse or dependence, the self-administered AUDIT was superior to the CAGE in this population.

Adult↗

Motivation for alcohol in rats: position and bottle preferences do not cause drinking.

Position preference, i.e., the tendency to drink from onelocation rather than the other, was found to be relatively unimportant in determining the drinking behavior of rats presented with a choice between water and a 7% (v/v) ethanol solution in typical two-bottle choice situations. It accounted for essentially none of the variance in rats generally drinking more alcohol solution than water after prolonged previous alcohol experience, and in rats consuming very little alcohol; only in rats drinking slightly less alcohol solution than water was it found to have an influence. Similarly, bottle preference, i.e., the tendency to drink from one of the two bottles regardless of its position or contents, andposition preference were found to have almost no effect on heavy-drinking rats even on their first day of exposure and on low-drinking rats after about three days of access to alcohol.

Alcohol Drinking↗

Differential efficacy of serotonergic drugs FG5974, FG5893, and amperozide in reducing alcohol drinking in P rats.

Amperozide (FG5606), a 5-HT2 receptor antagonist, is well known to suppress alcohol consumption in different rat models of drinking. The present study compared the efficacy of three drugs, FG5974, FG5893, and amperozide, which have differential affinities for 5-HT1A and 5-HT2A receptors, on alcohol drinking in the genetic alcohol-preferring (P) rat. After preference for alcohol vs. water was determined over 10 days when concentrations of alcohol were increased from 3% to 30%, the maximal concentration of alcohol preferred by each animal was selected for drug testing. A 4-day predrug preference test was followed by SC injection of the saline control vehicle or doses of 1.0 and 2.5 mg/kg FG5974, FG5893, or amperozide given at 1600 and 2200 h for 4 days. Alcohol preference testing concluded with a final 4-day interval. A total daily dose of 5.0 mg/kg FG5974 reduced absolute g/kg intake of alcohol and proportional intakes of the P rats significantly; the lower dose of FG5974 also reduced alcohol drinking significantly following treatment. The mixed 5-HT1A agonist/5-HT2A antagonist, FG5893, which suppresses drinking in cyanamide-treated rats, was without effect on alcohol ingested by the P rats. However, amperozide caused a dose-dependent decline in both absolute intakes and proportion of alcohol that was more intense than that of FG5974. The control vehicle failed to alter alcohol drinking and, like the FG compounds, did not affect food intake or body weight. Although the inhibition of alcohol drinking by amperozide corresponds precisely with previous findings, the effect of FG5974 contrasts to results obtained with a structurally analogous drug FG5893. Thus, the genetic strain of rat as well as the nature of the chemical characteristics of a 5-HT agonist/antagonist will determine the differential efficacy of a drug in influencing the volitional drinking of alcohol.

Alcohol Drinking↗

Suppression of alcohol preference in high alcohol drinking rats: efficacy of amperozide versus naltrexone.

The selectively bred high alcohol drinking (HAD) line of rat is considered as a potential model of one type of alcoholism. The purpose of the present experiments was to compare the efficacy of two drugs on the volitional drinking of the HAD rats: the 5-HT2A receptor antagonist, amperozide, and a nonselective antagonist of opiate receptors, naltrexone. To determine the pattern of alcohol drinking of the HAD rats, a standard preference test was used in which water was offered with alcohol increased in concentrations from 3% to 30% over 11 days. The maximally preferred concentration of alcohol of each rat was offered for 4 days and ranged from 7% to 20% with a mean intake of 6.9 g/kg per day. Initially, 1.0 mg/kg amperozide, 2.5 mg/kg naltrexone, or the saline vehicle were injected twice daily for 4 days at 1600 and 2200 hours. Secondly, 2.0 mg/kg amperozide, 5.0 mg/kg naltrexone, or the saline vehicle were administered also for 4 days. After the drug sequences, alcohol preference tests continued for another 4 days. Whereas the saline vehicle was without effect on drinking, the administration of either drug caused a significant dose-dependent reduction in the daily intake of alcohol by the HAD rats in terms of absolute g/kg and proportion of alcohol to water consumed. A comparison of the drinking response to the higher doses of the two drugs showed that amperozide was more efficacious in suppressing alcohol intake than naltrexone. Niether amperozide nor naltrexone exerted any significant effects on food and water intakes or on body weight. These results support the concept of a functional link in the brain between the serotonergic and opioidergic systems postulated to underlie, in part, the aberrant drinking of alcohol. A marked dissociation between the temporal patterns of drinking after naltrexone and amperozide treatment suggests that the opiate receptors mediate the immediate reinforcing effects of alcohol, whereas the more vegetative phenomena underlying addictive properties of alcohol are regulated by 5-HT2A receptors postsynaptic to serotonergic neurons. Finally, the inhibitory actions of both drugs imply that multiple receptor mechanisms within the mesolimbic and other systems in the brain underpin the addictive liability to alcohol.

Alcohol Deterrents↗

Evaluation of a simple model of ethanol drinking to intoxication in C57BL/6J mice.

Because of intrinsic differences between humans and mice, no single mouse model can represent all features of a complex human trait such as alcoholism. It is therefore necessary to develop partial models. One important feature is drinking to the point where blood ethanol concentration (BEC) reaches levels that have measurable affects on physiology and/or behavior (>1.0 mg ethanol/ml blood). Most models currently in use examine relative oral self-administration from a bottle containing alcohol versus one containing water (two-bottle preference drinking), or oral operant self-administration. In these procedures, it is not clear when or if the animals drink to pharmacologically significant levels because the drinking is episodic and often occurs over a 24-h period. The aim of this study was to identify the optimal parameters and evaluate the reliability of a very simple procedure, taking advantage of a mouse genotype (C57BL/6J) that is known to drink large quantities of ethanol. We exchanged for the water bottle a solution containing ethanol in tap water for a limited period, early in the dark cycle, in the home cage. Mice regularly drank sufficient ethanol to achieve BEC>1.0 mg ethanol/ml blood. The concentration of ethanol offered (10%, 20% or 30%) did not affect consumption in g ethanol/kg body weight. The highest average BEC ( approximately 1.6 mg/ml) occurred when the water-to-ethanol switch occurred 3 h into the dark cycle, and when the ethanol was offered for 4 rather than 2 h. Ethanol consumption was consistent within individual mice, and reliably predicted BEC after the period of ethanol access. C57BL/6J mice from three sources provided equivalent data, while DBA/2J mice drank much less than C57BL/6J in this test. We discuss advantages of the model for high-throughput screening assays where the goal is to find other genotypes of mice that drink excessively, or to screen drugs for their efficacy in blocking excessive drinking.

Alcohol Drinking↗

Effect of flavor and awareness of kilojoule content of drinks on preference and fluid balance in team sports.

A palatable flavor is known to enhance fluid intake during exercise; however, a fear of excessive kilojoule intake may deter female athletes from consuming a sports drink during training sessions. In order to examine this issue, we monitored fluid balance during 9 separate training sessions undertaken by junior elite female netball players (n = 9), female basketball players (n = 7), and male basketball players (n = 8). The beverages tested were water, a regular carbohydrate-electrolyte beverage (6.8% CHO, 18.7 mmol/L Na, 3.0 mmol/L K, 1,130 kJ/L), and an identical tasting, low kilojoule electrolyte beverage (1% CHO, 18.7 mmol/L Na, 3.0 mmoI/L K, 170 kJ/L). Each subject received each of the 3 drinks at 3 separate training sessions, in a randomized, balanced order. Subjects were aware of the beverage provided. Change in body mass over the training session was used to estimate body fluid change, while voluntary fluid intake was determined from the change in weight of drink bottles used in each session. The overall fluid balance on drinks classified as regular, low kilojoule, and water was -11.3 ml/h (95%CI -99.6 to 77.0), -29.5 ml/h (95%CI -101.4 to 42.5) and-156.4 ml/h (95%CI-215.1 to-97.6), respectively. Theresults indicate that, overall, better fluid balance was achieved using either of the flavored drinks compared to water. These data confirm that flavored drinks enhance fluid balance in a field situation, and suggest that the energy content of the drink is relatively unimportant in determining voluntary fluid intake.

Adolescent↗

Impaired drinking responses of rats with lesions of nucleus medianus: circadian dependence.

The drinking behavior of rats with electrolytic lesions of ventral nucleus medianus (vNM) was examined during acute hyperosmolality and hypovolemia. The brain-damaged animals were impaired in their drinking responses to systemic treatment with hypertonic saline or polyethylene glycol solution when they were tested during the day. However, apparently normal drinking responses to both dipsogenic challenges were observed when the same animals were pretreated with the stimulant drug, caffeine, or when they were tested at night. These results suggest that lesions of vNM may produce complex alterations in the control of drinking behavior rather than the destruction of sensory receptors. The lesions appear to disrupt both circadian influences on drinking and activational components of drinking that normally serve to facilitate the behavioral response. The present results, together with similar findings for rats given lesions of the subfornical organ, support recent proposals that periventricular tissue bordering the rostral wall of the third cerebral ventricle plays an important role in the central control of drinking.

Animals↗

Binge drinking and mortality after acute myocardial infarction.

BACKGROUND: Moderate drinkers have a lower risk of mortality after myocardial infarction (MI). Although binge drinking has been associated with a higher risk of MI in some studies, its relation to prognosis after MI is uncertain. METHODS AND RESULTS: In a prospective, inception cohort study conducted at 45 US hospitals, 1935 patients hospitalized with a confirmed MI between 1989 and 1994 underwent detailed personal interviews. Patients reported their usual frequency of binge drinking of beer, wine, and liquor, defined as intake of 3 or more drinks within 1 to 2 hours, and were followed up for mortality for a median of 3.8 years. Of 1919 eligible patients, 250 (94% men) reported binge drinking during the prior year, and a total of 318 patients died during follow-up. Binge drinkers had a 2-fold higher risk of mortality than drinkers who did not binge (hazard ratio, 2.0; 95% confidence interval, 1.3 to 3.0). A comparison of 192 binge drinkers and 192 other patients matched on propensity scores yielded a similar result. The association between binge drinking and total mortality tended to be similar among patients whose usual alcohol intake was light or heavier and for binge drinkers who consumed beer, wine, or liquor. Usual alcohol intake was inversely associated with mortality, but binge drinking completely attenuated this relation. CONCLUSIONS: Our results suggest that alcohol consumption may be linked to potential hazards among patients who survive acute MI. Although moderate intake has been associated with lower mortality, binge drinking, even among light drinkers, appears to be associated with 2-fold higher mortality.

Adult↗

Drinking in snakes: kinematic cycling and water transport.

Snakes are purported to drink by sucking water into their mouths and then compressing the oral cavity to force water into the oesophagus. Video recordings of drinking behaviour in 23 snakes representing 14 species from three families, combined with simultaneous recordings of water volumes consumed, show that all the snakes vary widely in the amount of water taken in when drinking. This variation is not correlated with kinematic events. Kinematic recordings and indirect measurements of water flow suggest that moving water into the mouth can be decoupled from the processes that move water into the oesophagus and that, infrequently, water may continue flowing into the mouth during both opening (suction) and closing (presumed compression) of the mouth. Drinking in snakes is not a simple, stereotyped behaviour. Different snake species differ in both drinking kinematics and water inflow patterns. Vertical excursions of the mandible are smallest in booids and larger, but highly variable, in different viperids and colubrids. Cyclic movements of the tongue seen in booids are not evident in viperids or colubrids. All the snakes usually take in water at rates far below their potential maximum rate. Although drinking is apparently achieved by suction, a single model cannot explain all water movement patterns in snakes. At a practical level, functional morphological studies of drinking in snakes (and possibly many other animals) must demonstrate that fluid flow actually correlates with kinematic events. Without such an empirical demonstration, interpretation of other measurements (pressure, movement, etc.) is unlikely to produce meaningful models.

Animals↗

Do women change their drinking behaviors while trying to conceive? An opportunity for preconception counseling.

BACKGROUND: Prenatal alcohol exposure is a leading cause of preventable mental retardation and developmental disabilities, including fetal alcohol syndrome. Current medical guidelines recommend that no alcohol should be consumed over the period of conception and throughout pregnancy. Although the majority of women reduce alcohol consumption when they realize they are pregnant, this recognition may not occur until well into the first trimester, potentially impacting embryonic development. OBJECTIVES: To describe and assess changes in patterns of women's alcohol use between the preconception, pre-pregnancy recognition and post-pregnancy recognition time periods. Secondly, to describe characteristics of women consuming any alcohol and those binge drinking during pre- and post-pregnancy recognition periods. METHODS: Computer assisted telephone interviews were conducted with 1042 women who had recently delivered a baby in urban Alberta, Canada. Differences in consumption patterns between time periods were analyzed using analysis of variance and Chi-square tests. Characteristics of those drinking both before and after pregnancy recognition were analyzed using logistic regression. RESULTS: Eighty percent of women reported alcohol consumption pre-conceptually, 50% pre-pregnancy recognition and 18% post-pregnancy recognition. Binge drinking was reported by 32%, 11% and 0% for preconception, pre-pregnancy recognition and post-pregnancy recognition periods, respectively. Alcohol consumption patterns (i.e., the mean number of drinks per drinking day and week) did not differ significantly between preconception and pre-pregnancy recognition periods but did significantly drop after pregnancy recognition (p<0.001). Alcohol use during the period of pre-pregnancy recognition was higher among those not planning a pregnancy, not using assisted reproductive technology, of higher income, without a history of miscarriage, who were Caucasian, and who used tobacco. Binge drinking was higher among women not planning a pregnancy, those who used tobacco, and those with low self-esteem. Women continuing to drink small amounts of alcohol after pregnancy recognition were more likely to be between the ages of 30-39 years, be Caucasian and use tobacco. CONCLUSION: Preconception and "well-women" counseling strategies would be improved by increasing the emphasis on the risks of alcohol use during periods when pregnancy can occur.

Adult↗

The AUDIT alcohol consumption questions (AUDIT-C): an effective brief screening test for problem drinking. Ambulatory Care Quality Improvement Project (ACQUIP). Alcohol Use Disorders Identification Test.

OBJECTIVE: To evaluate the 3 alcohol consumption questions from the Alcohol Use Disorders Identification Test (AUDIT-C) as a brief screening test for heavy drinking and/or active alcohol abuse or dependence. METHODS: Patients from 3 Veterans Affairs general medical clinics were mailed questionnaires. A random, weighted sample of Health History Questionnaire respondents, who had 5 or more drinks over the past year, were eligible for telephone interviews (N = 447). Heavy drinkers were oversampled 2:1. Patients were excluded if they could not be contacted by telephone, were too ill for interviews, or were female (n = 54). Areas under receiver operating characteristic curves (AUROCs) were used to compare mailed alcohol screening questionnaires (AUDIT-C and full AUDIT) with 3 comparison standards based on telephone interviews: (1) past year heavy drinking (>14 drinks/week or > or =5 drinks/ occasion); (2) active alcohol abuse or dependence according to the Diagnostic and Statistical Manual of Mental Disorders, Revised Third Edition, criteria; and (3) either. RESULTS: Of 393 eligible patients, 243 (62%) completed AUDIT-C and interviews. For detecting heavy drinking, AUDIT-C had a higher AUROC than the full AUDIT (0.891 vs 0.881; P = .03). Although the full AUDIT performed better than AUDIT-C for detecting active alcohol abuse or dependence (0.811 vs 0.786; P<.001), the 2 questionnaires performed similarly for detecting heavy drinking and/or active abuse or dependence (0.880 vs 0.881). CONCLUSIONS: Three questions about alcohol consumption (AUDIT-C) appear to be a practical, valid primary care screening test for heavy drinking and/or active alcohol abuse or dependence.

Aged↗

Health-compromising behaviors: why do adolescents smoke or drink?: identifying underlying risk and protective factors.

OBJECTIVES: To better understand the motivation for adolescent smoking and drinking and to identify the underlying risk and protective factors associated with these behaviors among adolescents. DESIGN: Cross-sectional, school-based survey of students in grades 5 through 12. PARTICIPANTS: A nationally representative sample of 2574 boys and 2939 girls in grades 7 through 12 from 297 public, private, and parochial schools across the United States who participated in The Commonwealth Fund Survey of the Health of Adolescent Girls and Boys in 1997. MAIN OUTCOME MEASURES: Sex-specific adjusted relative risks (RRs) and 95% confidence intervals (CIs) comparing self-reported regular smokers and regular drinkers by risk and protective factors with adolescents reporting none of these behaviors. RESULTS: Adolescent boys and girls were equally likely to be regular smokers (11.2%). The prevalence rate of regular drinking was only slightly higher for boys (22.4%) than it was for girls (19.3%). The rates of both health-risk behaviors were significantly higher for those reporting risk factors, and the strengths of associations varied by sex. Sex differences also emerged in motivation for engaging in these behaviors. When we adjusted for demographic characteristics, exposure to childhood abuse (RR, 4.1; 95% CI, 2.4-7.0) and stressful life events (RR, 2.4; 95% CI, 1.1-5.4) were strongly associated with increased risk for boys' regular smoking. Similar associations were found for regular drinking. For girls, a history of abuse (RR, 1.8; 95% CI, 1.1-2.8), violence within the family (RR, 2.2; 95% CI, 1.6-3.2), depressive symptoms (RR, 1.6; 95% CI, 1.0-2.4), and stressful life events (RR, 3.1; 95% CI, 1.8-5.6) were significantly associated with increased risk for regular smoking. Similar associations were again found for regular drinking. Parental support was protective against both health-risk behaviors for both sexes. Participation in extracurricular activities was associated with lower risk for regular smoking for boys (RR, 0.4; 95% CI, 0.2-0.7) and for girls (RR, 0.3; 95% CI, 0.2-0.5); however, there was no significant association between drinking behavior and participation in activities. CONCLUSIONS: The increased risk for regular smoking and regular drinking among adolescents with a history of abuse, family violence, depressive symptoms, and stressful life events suggests that routine screening for abuse, violence, and other family experiences should be an essential component of adolescent health care visits. Effective prevention programs to reduce smoking and drinking among adolescents should recognize that health-risk behaviors may be associated with other negative life experiences and that the strength of these associations differs by sex.

Adolescent↗

Correlates of multigravida women's binge drinking during pregnancy. A longitudinal study.

OBJECTIVE: To refine our understanding of prenatal psychosocial factors associated with binge drinking during pregnancy and the contribution of binge drinking during pregnancy to the duration of newborn hospitalization. DESIGN: Prospective cohort. SETTING: A large urban medical center in Wisconsin. PARTICIPANTS: One hundred thirty-nine women (106 multigravida) who were invited to participate during a prenatal clinic visit early in their third trimester. MEASURES: Prenatal measures included social support (Maternal Social Support Index), depression (Center for Epidemiologic Studies Depression Scale), stress (Difficult Life Circumstances), substance use (Monitoring the Future Substance Use Questionnaire and T-ACE Scale [a screen with questions about tolerance, annoyance, cutting down, and using alcohol as an eye-opener), and maternal-fetal attachment (Maternal-Fetal Attachment Scale). After delivery, a mothers' and infants' medical record review form was used. RESULTS: Multigravida pregnant women (n = 106) were older than primigravida pregnant women (n = 33) (25.8 +/- 0.6 vs. 20.5 +/- 0.5 years; P = .001), with more children at home (2.3 +/- 0.2 vs 1.3 +/- 0.3; P = .01) and less social support (Maternal Social Support Index, 20.1 +/- 0.6 vs 22.9 +/- 1.0; P = .03). All of the binge-drinking women in this sample were in the unmarried multigravida subgroup (17/101 [17%]). Compared with multigravida pregnant women who did not binge drink during pregnancy, binge-drinking pregnant women were older (28.1 +/- 1.3 vs 25.1 +/- 0.6 years; P = .03) and more socially isolated (Maternal Social Support Index, 17.2 +/- 1.3 vs 20.7 +/- 0.7; P = .04) and were more likely to smoke during the pregnancy (82% vs 39%; P = .001). Even after controlling for a number of other important biologic and psychosocial factors (duration of pregnancy, maternal gravidity, racial heritage, education, social support at second trimester, and birth weight), by hierarchical multiple linear regression, binge drinking within the last 2 weeks before the late second-trimester interview continued to explain a significant amount of variance in duration of newborn hospitalization (total R2 = .48, partial R2 = .04; P = .01). CONCLUSIONS: This study suggests that binge drinking during pregnancy is related to longer newborn hospitalizations. Effective prenatal interventions to improve the outcome of pregnancies for women who abuse alcohol during pregnancy should use early screening and provide augmentation of mothers' social support.

Adult↗

Serotonin transporter promoter polymorphism and monoamine oxidase type A VNTR allelic variants together influence alcohol binge drinking risk in young women.

The short allelic variant of the serotonin transporter protein promoter polymorphism (5HTTLPR) appears to influence binge drinking in college students. Both monoamine oxidase type A (MAOA) and the serotonin transporter protein are involved in the processing of serotonin, and allelic variants are both associated with differences in the efficiency of expression. We hypothesized that a significant gene x gene interaction would further stratify the risk of binge drinking in this population. Participants were college students (n = 412) who completed the College Alcohol Study, used to measure binge drinking behaviors. Genomic DNA was extracted from saliva for PCR based genotyping. The risk function for binge drinking was modeled using logistic regression, with final model fit P < 0.0005. This model was valid only for Caucasian females (n = 223), but the power to detect sex and ethnic effects was small. Young Caucasian women carrying higher expression MAOA VNTR alleles homozygous for the short allelic variant of the 5HTTLPR demonstrated the highest rate of binge drinking by self-report, odds ratio (genotype odds: population odds) and 95% confidence intervals, 3.11 (1.14-18.10). Individuals carrying higher expression MAOA VNTR alleles carrying at least one long 5HTTLPR allelic variant had the lowest risk of binge drinking 0.46 (0.28-0.71). These results support the hypothesis that binge drinking behavior in young adulthood may be influenced by neurobiological differences in serotonergic function conferred by functional polymorphisms in genes involved in serotonin processing.

Adolescent↗

GABAA receptor regulation of voluntary ethanol drinking requires PKCepsilon.

Protein kinase C (PKC) regulates a variety of neural functions, including ion channel activity, neurotransmitter release, receptor desensitization and differentiation. We have shown previously that mice lacking the epsilon-isoform of PKC (PKCepsilon) self-administer 75% less ethanol and exhibit supersensitivity to acute ethanol and allosteric positive modulators of GABA(A) receptors when compared with wild-type controls. The purpose of the present study was to examine involvement of PKCepsilon in GABA(A) receptor regulation of voluntary ethanol drinking. To address this question, PKCepsilon null-mutant and wild-type control mice were allowed to drink ethanol (10% v/v) vs. water on a two-bottle continuous access protocol. The effects of diazepam (nonselective GABA(A) BZ positive modulator), zolpidem (GABA(A) alpha1 agonist), L-655,708 (BZ-sensitive GABA(A) alpha5 inverse agonist), and flumazenil (BZ antagonist) were then tested on ethanol drinking. Ethanol intake (grams/kg/day) by wild-type mice decreased significantly after diazepam or zolpidem but increased after L-655,708 administration. Flumazenil antagonized diazepam-induced reductions in ethanol drinking in wild-type mice. However, ethanol intake by PKCepsilon null mice was not altered by any of the GABAergic compounds even though effects were seen on water drinking in these mice. Increased acute sensitivity to ethanol and diazepam, which was previously reported, was confirmed in PKCepsilon null mice. Thus, results of the present study show that PKCepsilon null mice do not respond to doses of GABA(A) BZ receptor ligands that regulate ethanol drinking by wild-type control mice. This suggests that PKCepsilon may be required for GABA(A) receptor regulation of chronic ethanol drinking.

Alcohol Drinking↗

Health-associated changes in drinking: a period prevalence study of the Atherosclerosis Risk In Communities (ARIC) cohort (1987-1995).

BACKGROUND: Several investigators have suggested that drinking cessation occurs because of poor health which may bias studies on the benefit or risk of alcohol consumption. METHODS: Drinking status, level of alcohol consumption, and two measures of health (perceived health and physician diagnosed chronic disease status) were determined from exams 1 (1987-1989) and 3 (1993-1995) on 12,562 African- and European-American participants, who were aged 45-64 years at exam 1 in the ARIC Study. For those in good health at exam 1, logistic regression analyses were used to model the association between health decline and drinking change at exam 3. RESULTS: Among the total population, drinking cessation was significantly more common among those who reported poor health at exam 3, and nondrinkers were unlikely to begin drinking regardless of exam 3 health. Using different measures of health status resulted in associations whose strength and significance varied with ethnicity and, in some cases, by gender. CONCLUSION: While the current data do not prove that the health decline occurred prior to drinking cessation, our findings support the hypothesis that poor health results in drinking changes which could potentially bias studies of alcohol's benefit and risk even when lifetime abstainers are used as the reference group.

Adult↗