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PubMed1992

Physiology of thirst and drinking: implication for nursing practice.

Thirst and drinking function to maintain body water balance and are basic to survival. Thirst is often associated with a dry unpleasant-tasting mouth and the feeling of a need to obtain water; it can result from dehydration, decreased vascular volume, dry mouth, pharmacologic agents, or inappropriate activation of the thirst mechanism. Drinking involves the motor activities that culminate in ingestion of liquids. Thirst sensation and drinking are influenced by many factors, including the temperature and taste of a liquid. Thirst may be discomforting in persons with limited fluid intake, diminished in some elderly persons, and inappropriate in persons who are compulsive water drinkers. Although nurses are commonly confronted with client complaints of thirst, there has been minimal nursing research that relates to assessment of thirst and drinking behaviors, nursing diagnoses for thirst, or nursing interventions for persons with altered thirst or drinking behaviors.

Compulsive Behavior↗

PubMed1997

A preliminary investigation of the management of alcohol dependence with naltrexone by primary care providers.

PURPOSE: To describe a preliminary investigation of a model of naltrexone therapy and counselling for use by primary care providers and evaluate its impact on drinking behaviors in a cohort of alcohol-dependent subjects. PATIENTS AND METHODS: The subjects enrolled in this study were 29 alcohol-dependent individuals. They were managed within a primary care treatment model located at a university-affiliated substance research program in New Haven, Connecticut. Subjects were assigned to a primary care provider for treatment of their alcohol dependence and were placed on naltrexone at a dose of 50 mg per day. They were seen for an initial "new patient" visit and 7 "brief" follow-up visits during the 10-week study. The primary outcomes for this study were completion of treatment, change in drinking behaviors from baseline, change in liver enzymes from baseline, provider ratings of improvement, and patient ratings of improvement and satisfaction with treatment. RESULTS: Of the 29 subjects: 21 (72%) completed treatment, and 10 (35%) relapsed to heavy drinking. All drinking behaviors improved significantly from baseline: percent of days abstinent increased from 36.6% to 88.8% (P < 0.0001), percent days abstinent from heavy drinking increased from 48.7% to 97.3% (P < 0.0001), and mean number of drinks per occasion decreased from 9.5 to 2.5 (P < 0.0001). The mean serum gamma glutamyl transferase (GGT) for the group decreased from 67.1 U/L to 45.3 U/L (P < 0.0001). CONCLUSIONS: In this preliminary investigation, treatment of alcohol dependence with our model of naltrexone and counselling by primary care providers appeared to be both feasible and effective.

Alcohol Drinking↗

PubMed1981

Gradual decay of circadian drinking organization following lesions of the suprachiasmatic nuclei in primates.

The circadian organization of squirrel monkey drinking behavior was examined in constant illumination following lesions which totally destroyed the suprachiasmatic nuclei. Although these lesions eventually led to a severe disruption in the temporal organization of drinking behavior, a statistically significant circadian pattern of drinking was observed in each monkey for at least 4-6 weeks after lesioning.

Animals↗

PubMed1992

Behavioral and morphological studies of fetal neural transplants into SCN-lesioned rats.

We have studied the effects of fetal neuronal grafts on the temporal pattern of drinking behavior of suprachiasmatic nuclei (SCN)-lesioned adult rats. Additionally, in an independent set of animals, the immunohistochemical staining for vasopressin, vasoactive intestinal polypeptide, and neuropeptide Y and the retinal connections to the hypothalamus were studied. The behavioral experiments indicate that anterior hypothalamic transplants induced reorganization of the temporal pattern of drinking behavior when placed in the third ventricle of adult hosts bearing complete SCN lesions, but not when placed in a cavity in the occipital cortex. Such rhythmicity persists only when the animals were recorded under constant darkness but not under constant light, indicating that the restored rhythmicity was generated endogenously but that the oscillator was extremely sensitive to light. Fetal occipital cortex induced reorganization of the temporal pattern of previously arrhythmic hosts, but it disappeared when the animals were recorded under constant light or constant darkness. It is clear that this rhythmicity was exogenous. In contrast to the cortical transplants, the hypothalamic transplants showed a morphological organization similar to that found in the normal hypothalamus regardless of their placement in the host brain. From these observations it is concluded that development of neocortex is more affected by environmental factors than that of the hypothalamus. Both hypothalamic and cortical transplants induced sprouting of retinal fibers into the anterior hypothalamus and the grafted tissue. It is possible that such fibers could be the neuroanatomical substrate by which rhythmicity is induced by cortical tissue.

Animals↗

PubMed1984

Preabsorptive pregastric vagally mediated histaminergic component of drinking elicited by eating in the rat.

Preabsorptive stimulation by food was confined to the pregastric (oropharynx and esophagus) segment of the gastrointestinal tract by having male Sprague-Dawley rats sham feed liquid food which then drained out a gastric cannula. This procedure provided a paradigm for studying the effect of preabsorptive pregastric food-contingent stimulation on drinking behavior. Sham feeding elicited drinking that was (a) attenuated by complete bilateral subdiaphragmatic vagotomy (with hepatic branch intact), (b) attenuated by peripheral cholinergic blockade with intraperitoneal atropine methyl nitrate (0.25 mg/kg), and (c) abolished by combined antagonism of H1 and H2 histamine receptors with the use of intraperitoneal dexbrompheniramine (1 mg/kg) and cimetidine (16 mg/kg). These results provide evidence for a preabsorptive pregastric vagally mediated histaminergic component of drinking elicited by eating in the rat.

Animals↗

PubMed2001

Association of the ADH2 genotypes with skin responses after ethanol exposure in Japanese male university students.

BACKGROUND: A contribution of the alcohol dehydrogenase-2 (ADH2) polymorphism to alcohol sensitivity and alcohol drinking behavior is still controversial. In this study, we examined the effects of the ADH2 genotypes on skin reactions to ethanol and habitual alcohol intake among Japanese male university students, controlling for the effects of the low Km aldehyde dehydrogenase (ALDH2) genotype, as an extension of our previous study. METHODS: The study subjects were 357 Japanese male students [average age (mean +/- SD) was 23.7 +/- 3.0 years] in a medical university. The subjects completed a questionnaire regarding self-reported alcohol-associated symptoms and alcohol-drinking behavior. The ADH2 and ALDH2 genotypes were determined through digestion of polymerase chain reaction products by restriction enzymes. All subjects participated in the ethanol patch test. We observed skin responses at 0, 5, 15, and 20 min after removal of the tape. RESULTS: Among the ALDH2*1/*1 genotypes, only some subjects with ADH2*1/*2 or ADH2*2/*2 exhibited a positive response, which increased with increasing time after the removal. However, none of comparisons between the different ADH2 genotypes reached statistical significance. Among the ALDH2*1/*2 genotypes, those with ADH2*1/*2 or ADH2*2/*2 showed a significant increase in response with increasing time after the removal and revealed a significantly higher positivity rate at 15 min than those with ADH2*1/*1. In those with the ALDH2*1/*2 genotype, the positive rate of facial flushing with one glass of beer was higher in those with ADH2*1/*2 and ADH2*2/*2 than those with ADH2*1/*1, although this was not significant. However, the ADH2 genotype did not seem to influence drinking frequency or amounts of alcohol intake in each ALDH2 genotype. CONCLUSIONS: This study finds further evidence for a contribution of the ADH2 polymorphism to skin reactions after either local or systemic ethanol exposure in Asian people. However, the effects of the ADH2 polymorphism may be mild because this polymorphism does not seem to influence alcohol drinking behavior in these study subjects.

Adult↗

PubMed2005

Reducing effect of the positive allosteric modulators of the GABA(B) receptor, CGP7930 and GS39783, on alcohol intake in alcohol-preferring rats.

The gamma-aminobutyric acidB (GABA(B)) receptor full agonists, baclofen and CGP44532, have been found to suppress different aspects of alcohol drinking behavior, including acquisition and maintenance, in selectively bred Sardinian alcohol-preferring (sP) rats. The present study was designed to assess whether this capability extends to the recently synthesized, positive allosteric modulators of the GABA(B) receptor, 2,6-Di-tert-butyl-4-(3-hydroxy-2,2-dimethyl-propyl)-phenol (CGP7930) and N,N'-dicyclopentyl-2-methylsulfanyl-5-nitro-pyrimidine-4,6-diamine (GS39783). In the "acquisition" experiments, CGP7930 (0, 25, 50 and 100 mg/kg; i.g.) and GS39783 (0, 6.25, 12.5 and 25 mg/kg; i.g.) were administered for 5 consecutive days to alcohol-naive sP rats. In the "maintenance" experiments, (0, 50 and 100 mg/kg; i.g.) and GS39783 (0, 50 and 100 mg/kg; i.g.) were administered for 5 consecutive days to alcohol-experienced sP rats. Alcohol intake was evaluated under the standard, homecage 2-bottle "alcohol (10%, v/v) vs water" regimen with unlimited access for 24 h/day. Both CGP7930 and GS39783 dose-dependently suppressed the acquisition of alcohol drinking behavior. In the "maintenance" experiments, CGP7930 and GS39783 reduced daily alcohol intake by 30-40% only at the highest dose when compared to vehicle-treated rats; this effect tended to vanish on continuing treatment. The results of the present study suggest that positive allosteric modulation of the GABA(B) receptor produced an effect on alcohol drinking behavior similar to that produced by GABA(B) receptor full agonists. These data also suggest that positive allosteric modulation of the GABA(B) receptor may constitute a potential strategy for developing new drugs for treating alcohol dependence.

Alcohol Drinking↗

PubMed1989

Attitudes and expectancies as predictors of drinking habits: a comparison of three scales.

Research on expectations about the effects of alcohol has shown these expectancies to be related to drinking habits. Expectancies can be seen as components of attitudes toward alcohol, which are also related to drinking behavior. The relationships between attitudes, expectancies, and self-reported drinking behavior were examined. Three different measures of expectancies were included in order to compare their relative utility in predicting drinking variables. Two of the three measures performed equally in prediction. Although expectancies added significantly to explained variance in drinking when attitudes were controlled for, the increment was quite small. The improvement in prediction was larger when the measures of attitudes and behavior lacked correspondence. The results suggest that attention to the relationships between attitudes and expectancies can inform further research in this area.

Adolescent↗

PubMed1998

The relationship between ethnicity, gender and alcohol consumption: a strategy for testing competing models.

AIM: This study tested mediator, moderator and main effects models to determine the pattern of relationships between ethnicity, gender, temperament, and alcohol use. DESIGN: A large-scale survey was employed. Respondents were interviewed in their homes. Participants were 523 Puerto Rican and 490 Irish American adults residing in the New York metropolitan area. MEASURES: Quantity and frequency of alcohol consumption were assessed with standard measures, and recent drinking problems with the substance abuse module of the Composite International Diagnostic Instrument. FINDINGS: Rather than supporting a complex, nested model, the findings supported a main effects model and indicated that each of the three predictors was related to one or more drinking measure. While gender strongly influenced each drinking behavior, ethnicity only influenced frequency, and temperament only influenced recent drinking problems. CONCLUSIONS: The results support previous studies indicating consistent male-female drinking differences while highlighting a statistical strategy for comparing competing models of ethnic drinking behavior.

Adult↗

PubMed1981

Endogenous opioid peptide inhibition of the central actions of angiotensin.

Effects of endogenous opioid peptides (leucine5-enkephalin; methionine5-enkephalin; and beta-endorphin) and morphine on isoleucine5-angiotensin II (All)-stimulated increase in plasma vasopressin concentration, blood pressure and drinking behavior were characterized in conscious rats. Plasma vasopressin concentration, drinking frequency and latency were measured 90 sec after intracerebroventricular (i.v.t.) All in animals pretreated with enkephalins, beta-endorphin or morphine, i.v.t. Vasopressin was measured by radioimmunoassay. A consistent dose-related, naloxone-sensitive inhibition of the All-stimulated increase in plasma vasopressin concentration and drinking behavior (frequency) occurred after enkephalins, beta-endorphin or morphine. beta-Endorphin and morphine were longer acting and more potent than enkephalins. In other experiments, All (i.v.t.) pressor activity, drinking volume and latency were measured at hourly intervals after opiates, i.v.t. The All-stimulated increase in mean blood pressure and drinking volume were inhibited by endogenous opioid peptides and morphine, i.v.t. Naloxone prevented opiate inhibition of the All pressor response. Endogenously synthesized opiates may modulate All activity as naloxone potentiated the pressor response and decreased water consumption after All, i.v.t. Continuous i.v. infusion of leucine-enkephalin did not affect All drinking or pressor activity, indicating a central nervous system site of inhibition. Opiate inhibition of the central actions of All appeared independent of sedation; head shakes or wet dog shakes occurred at effective doses of enkephalins. Naloxone did not affect basal blood pressure or plasma vasopressin concentration. Endogenous opioid peptides may modulate the central actions of angiotensin II affecting blood pressure and hydration.

Angiotensin II↗

PubMed2000

Do friendships change behaviors, or do behaviors change friendships? Examining paths of influence in young adolescents' alcohol use.

PURPOSE: This study examined support for models of peer influence, which postulates that young adolescents whose friends use alcohol will also engage in that behavior, and of peer selection, whereby young adolescents seek out friends whose drinking behavior is similar to their own. METHODS: Data for this study are from 1804 adolescents participating in Project Northland, a school- and community-based alcohol use prevention trial. Using latent variable structural equation modeling, a series of models examined directions of influence between participant alcohol use and friend drug use over three points in Grades 7, 8, and 9. RESULTS: Findings indicated that higher levels of friends' drug use led to increased participant alcohol use. The reverse-order relationship (i.e., greater participant involvement in alcohol leading to more drug use among friends) was not supported by these data. Finally, best-fitting models supported the notion that both participants' alcohol use and the alcohol and other drug use of friends were highly stable over time. CONCLUSIONS: Similarity in drinking behavior among adolescent friends may be more related to processes of peer influence than to processes of peer selection. Findings support the utility of alcohol use prevention programs that equip younger teens with skills to resist peer influences to use alcohol.

Adolescent↗

PubMed2000

An assessment of novelty-seeking behavior in alcohol-preferring and nonpreferring rats.

This study examined novelty-seeking behavior in rat populations selectively bred for high and low alcohol-drinking behavior. In Experiment 1, and "odor-enhanced" novel environment produced greater behavioral activation in P compared to NP rats. In Experiment 2, the activity of high alcohol-drinking P and HAD rats was enhanced to a greater extent following the presentation of novel odors in a familiar arena, compared to the NP and LAD rats. The results suggest that, when measuring locomotor activity, alcohol-preferring rats are more reactive to novelty than their nonpreferring counterparts. Experiments 3 and 4, however, did not support the hypothesis that novelty seeking is associated with genetic vulnerability to high alcohol-drinking behavior. When measuring nose-poking behavior in response to novel odors and preference for a novel vs. a familiar chamber, behavior of the preferring lines did not differ from that of the nonpreferring lines, although P rats were more active in the place-preference paradigm. The overall results indicate that the relationship between novelty and alcohol drinking is only modestly associated, and is observed under specific conditions. Moreover, this study underscores the importance of using multiple measures when assessing complex behaviors such as novelty seeking.

Alcohol Drinking↗

PubMed1984

A three component alcohol attitude scale.

A summated rating scale of the Likert-type was constructed to measure college students' attitudes toward alcohol use and abuse. Using a three-component approach, a table of specifications for the instrument was developed to include three subscales to measure feeling, belief and intention to act. Comparable emphasis in each subscale was given to drinking behavior, results of drinking and social perspectives. After extensive item development, two experimental forms were administered to a sample of undergraduate college students to gather evidence of item function and validity. Statistical analysis produced a pool of items meeting criteria for internal consistency and discrimination power. According to the table of specifications, 54 items were selected to provide 18 conceptually comparable items for each subscale in the final instrument. The scale was then administered to a sample of 880 undergraduate students at three large, midwestern universities. The data were analyzed statistically to test nine hypotheses concerning validity and performance of the scale. Results demonstrated highly significant levels of internal consistency and discriminating power of items, the subscales and the total scale. The three-component approach was found to be an appropriate, effective technique for measuring attitudes toward health-related behavior.

Adult↗

PubMed1995

Drinking and problem drinking in US women. Patterns and recent trends.

General population surveys suggest that the percentage of US women who drink declined slightly during the 1980s. Comparisons of 1981 and 1991 national surveys using the same drinking measures show that fewer women drank heavily in 1991, and women drinkers drank less frequently and had fewer episodes of heavy drinking, although younger drinkers reported more frequent intoxication. Longitudinal analyses of 5-year changes in drinking behavior indicate that movement both into and out of problem drinking is greatest among women aged 21 to 34. Subgroups of women with elevated rates of heavy drinking and/or adverse drinking consequences include younger women; women lacking social roles or occupying unwanted social statuses; women in nontraditional jobs; cohabiting women; and ethnic minority women experiencing rapid acculturation. Risks of heavy and/or problem drinking are also greater among women with a heavy-drinking husband or partner; depression; sexual dysfunction; or violent victimization in childhood or adulthood. Future research should focus on (1) the causes and consequences of recent declines in women's drinking; (2) antecedents and consequences of specific patterns of multiple substance use in women; (3) social and relational contexts of women's drinking, including occupational influences, drinking behavior of significant others, sexual dysfunction, and relationship violence; (4) longitudinal predictors of both problem drinking onset and "spontaneous" remission of women's alcohol problems; and (5) childhood sexual abuse as a potentially powerful risk factor for later alcohol abuse in women.

Alcohol Drinking↗

PubMed1990

Ambulatory activity in streptozotocin-induced diabetic rats.

This study was undertaken to investigate changes in ambulatory and drinking behavior, using the Gunma University-type special apparatus for continuous and direct measurement of ambulation and drinking in streptozotocin-induced diabetic rats (STZ, 60 mg/kg). Ambulatory activity of diabetic rats was significantly less than that of control rats during the dark phase but not during the light phase. Ambulatory activity of diabetic rats was also significantly less from 0900 to 1000 hr, but significantly more from 1400 to 1500 hr and 1700 to 1800 hr than that of control rats. On the other hand, there was significant increase in drinking behavior from DM-1W to DM-4W rats throughout the experimental time. Since diabetic animals are very sick, a wide variety of metabolic systems, including dopamine turnover, would be expected to be altered in these animals, and such alterations could also contribute to the results observed. Further studies are in progress to determine whether these abnormalities will be normalized by insulin administration.

Animals↗

PubMed1977

Independent receptors for pressor and drinking responses to central injections of angiotensin II and carbachol.

Angiotensin II and carbachol when injected in the brain ventricles of the rat produce similar responses of an increase in blood pressure and drinking behavior. The question of whether these effects are produced by independent receptors or via a cholinergic circuit is debatable for the drinking behavior and evidence is lacking for the blood pressure effect. We have used a chronic rat preparation for recording blood pressure and drinking at the same time during intraventricular injections (i.v.t.) of both angiotensin and carbachol and i.v.t. or intravenous infusions of appropriate antagonists. The results show that drinking and blood pressure response to angiotensin II can be blocked by P113 (500 ng 1.v.t.) an angiotensin antagonist; they are not blocked by atropine (10 mug i.v.t.) a cholinergic antagonist; carbachol effects, however, are not blocked by P113, but are totally blocked by atropine (10 mug i.v.t.), At high doses of atropine there is inhibition of both agents but this probably represents a general inhibition. The hormone and cholinomimetic administered together interact and both are inhibited by adrenergic stimulation. We conclude from these experiments that angiotensin and carbachol act upon independent receptors in the brain to produce blood pressure and drinking responses but at some point they share common, central effector pathways.

Angiotensin II↗

PubMed2004

Targeting misperceptions of descriptive drinking norms: efficacy of a computer-delivered personalized normative feedback intervention.

The authors evaluated the efficacy of a computer-delivered personalized normative feedback intervention in reducing alcohol consumption among heavy-drinking college students. Participants included 252 students who were randomly assigned to an intervention or control group following a baseline assessment. Immediately after completing measures of reasons for drinking, perceived norms, and drinking behavior, participants in the intervention condition were provided with computerized information detailing their own drinking behavior, their perceptions of typical student drinking, and actual typical student drinking. Results indicated that normative feedback was effective in changing perceived norms and alcohol consumption at 3- and 6-month follow-up assessments. In addition, the intervention was somewhat more effective at 3-month follow-up among participants who drank more for social reasons.

Adult↗

PubMed2003

Accessibility of alcohol-related attitudes: a cross-lag panel model with young adults.

BACKGROUND: In the alcohol literature, most cognition research has focused on alcohol expectancies. Overall scores on alcohol expectancy questionnaires predict longitudinal changes in drinking behavior. However, the association between expectancy subscale scores and drinking behavior is inconsistent and modest. Attitudinal information may vary in accessibility (i.e., the ease or speed with which attitudinal information is evaluated), and more accessible (i.e., faster) attitudinal evaluations may predict heavier alcohol consumption. An alternative hypothesis arising from response competition theory is that heavy drinkers will show slow attitudinal evaluations, given that heavy drinkers frequently show mixed, inconsistent, or opposing alcohol-related beliefs. In this study we examined the degree to which speed of processing of alcohol-related evaluative judgments longitudinally predicted alcohol consumption in university students. METHODS: Response latencies for alcohol- and non-alcohol-related attitudinal inquiries and measures of alcohol use were administered at two intervals 4 months apart. RESULTS: The key findings were that response times for tension reduction and cognitive impairment items at time 1 positively predicted alcohol consumption at time 2. These results held after we accounted for autocorrelation in drinking and individual variability in reactivity. CONCLUSION: For items relating to tension reduction, response times fit a response competition hypothesis better than the attitude accessibility hypothesis.

Adolescent↗