A review of the effects of moderate alcohol intake on psychiatric and sleep disorders

Exploring barriers and facilitators to addressing hazardous alcohol use and AUD in mental health services: a qualitative study among Dutch professionals

BACKGROUND

Hazardous alcohol use and alcohol use disorder (AUD) are highly prevalent among clients in mental health services, yet significant gaps remain in the adequate assessment of alcohol use and provision of appropriate alcohol interventions. The aim of this study was to conduct an exploration of (i) alcohol intervention elements used in mental health services and (ii) professionals' reported barriers and facilitators in identifying and intervening with hazardous alcohol use and AUD.

METHODS

Qualitative data were obtained by conducting semi-structured interviews among a purposive sample of 18 professionals from 13 different Dutch mental health services organizations (i.e., five integrated mental health organizations with addiction services, five mental health organizations without addiction services, and three addiction services organizations without mental health services). Transcripts were qualitatively analyzed using inductive thematic analysis.

RESULTS

Identified alcohol intervention elements included conducting assessments, brief interventions, treatment, referrals of clients, collaborations with other parties, and providing information to professionals. Professionals mentioned nine barriers and facilitators in the identification and intervention with hazardous alcohol use and AUD, including three aspects of professionals' behavior (i.e., professionals' agenda setting, knowledge and skills, and attitudes), actions related to identification and intervening, client contact, collaboration with other parties, and three factors in a wider context (i.e., organizational characteristics, organizational resources, and governmental aspects).

CONCLUSIONS

Although diverse alcohol intervention elements are available in Dutch mental health services, it remains unclear to what extent these are routinely implemented. To better address hazardous alcohol use and AUD in mental health services, efforts should focus on enhancing alcohol training, improving collaboration with addiction services, providing appropriate tools, and facilitating support through organizational and governmental measures.

Self-Reported Sleep during the COVID Lockdown in a Sample of UK University Students and Staff

The link between disturbed sleep and the extended lockdown period resulting from COVID-19 is well established. Data from an online survey of 2341 of university students (n = 1972, 84.2%) and staff were reported. Overall (n = 1710, 73.1%) were female and the mean age for the sample was 29.26 (SD = 12.86). 1799 (76.8%) provided self-reported data from the Nottingham Health Profile (NHP) Sleep Subscale that allowed sleep to be compared prior to the lockdown period and during the lockdown period. Sociodemographic data which included, gender, age, whether an individual was a student or member of the university staff, ethnicity, caring responsibilities, and highest educational level were collected. Other data included, the NHP Sleep Sub-scale, change in alcohol consumption during the lockdown period, routine behaviours during the lockdown period, self-efficacy and health and wellbeing. There was a significant deterioration in NHP Sleep scores (p < 0.001) and all areas of sleep that were assessed significantly deteriorated during the lockdown period. These included indicators of sleep quality, sleep latency, sleep duration, sleep disturbance and increased use of sleep medication. Following a multinomial logit regression with change of NHP sleep scores entered as the dependent variable there were several significant predictors. Women had greater sleep dysfunction than men. Increased alcohol consumption, lower educational status and a deterioration in health and well-being scores were associated with greater sleep dysfunction. Not having a designated area to work in and not putting on clothes and make-up were both associated with greater sleep dysfunction during the lockdown period. These findings confirm the importance of taking steps to maintain sleep hygiene during extended lockdown periods.

Alcohol Use among Swedish Patients with Stress-Induced Exhaustion Disorder, and Its Relation to Anxiety, Depression, and Health-Related Quality of Life

Harmful drinking may be a cause and an effect of psychological distress, and compromises the effects of treatment for psychiatric conditions. There is a paucity of studies investigating patterns of alcohol consumption among patients with stress-induced exhaustion disorder (SED). The aims of this investigation were (1) to assess the prevalence of self-rated hazardous drinking in a sample of 808 Swedish patients with SED (mean age 43 ± 9 years, 84% women), and (2) to investigate differences in sociodemographic variables, psychological symptoms, health-related quality of life, and sleep variables between patients with different drinking patterns The design was cross-sectional and data were collected with questionnaires at pre-treatment. Twelve percent of female and 13% of male patients reported Alcohol Use Disorder Identification Test (AUDIT) scores indicating hazardous drinking. Female patients with hazardous drinking reported higher levels of anxiety and depression and lower mental wellbeing, than other women. Female patients reporting no drinking reported poorer physical function and more pain, than other women. No differences were seen between male patients with different drinking patterns. Although patients with SED report a lower frequency of harmful drinking than other psychiatric samples, alcohol consumption needs to be addressed in the assessment and treatment of this condition.

How do people with mood and anxiety disorders perceive and interpret the Drinking Motives Questionnaire? A think-aloud study in a clinical setting

Background

Research has identified drinking motives as the final common pathway to alcohol use, and associations between specific drinking motives and drinking patterns have consistently been demonstrated. Data on drinking motives can be used for research, in the planning of prevention strategies and for treatment purposes. The Drinking Motives Questionnaire-Revised (DMQ-R) has become the most used measure of drinking motives. So far, the questionnaire has not been investigated with qualitative methods. The aim of this study was to investigate acceptability, accuracy and usability of the DMQ-R among persons receiving outpatient psychiatric care by studying how responders perceive and interpret the questionnaire.

Method

A cognitive interviewing technique, the think-aloud method, was used to collect data from 16 non-alcohol dependent patients seeking outpatient psychiatric care (12 women, 4 men). To analyse data, Qualitative Content Analysis was applied in which themes were formed from data only and not from predetermined areas of interest.

Results

Overall, acceptability of the DMQ-R was high although answers were sometimes given with low accuracy. Responders pointed out that they perceived the questionnaire as non-confrontational and exhaustive. Further, the DMQ-R seemed to launch processes of self-reflection.

Conclusions

Taken together, the results suggest a support for the use of DMQ-R also in the group of psychiatric outpatients. Still, when interpreting the DMQ-R, a certain insecurity of the exactness of answers should be considered. The graphic design should be particularly clear in this group of patients.

Electronic supplementary material

The online version of this article (10.1186/s13722-018-0109-1) contains supplementary material, which is available to authorized users.

Drinking motives of adult patients seeking treatment for problematic alcohol use

The Drinking Motives Questionnaire measures motives for alcohol consumption on four subscales. Coping with negative affect and enhancement of positive affect have been shown to be associated with high levels of alcohol consumption and alcohol-related problems. Few studies exist concerning drinking motives among treatment-seeking patients. The aims of the study were to investigate the factor structure of the shortened-form of the revised Drinking Motives Questionnaire, map main drinking motives, explore group differences in motives due to sex, age, level of drinking problems, and symptoms of depression/anxiety and to investigate whether different drinking motives predict alcohol-related problems in this group. There were 274 treatment-seeking patients recruited from four addiction treatment clinics in Sweden. The shortened-form of the revised Drinking Motives Questionnaire was administered in conjunction with a regular visit to the clinics together with measures of degree of alcohol-related problems, psychiatric symptoms, and demographic factors. Main drinking motives were identified. A confirmatory factor analysis was run to confirm the factor structure of the shortened-form of the revised Drinking Motives Questionnaire. A logistic regression using the Enter method was performed to investigate associations between predictors and Alcohol Use Disorder Identification Test scores. The results confirmed the four-factor structure reported in studies on non-treatment-seeking individuals. Coping was the most commonly expressed motive. Not previously found in a clinical sample, the results showed that coping motives, together with being male and having elevated anxiety scores, were associated to Alcohol Use Disorder Identification Test scores indicative of alcohol dependence. The shortened-form of the revised Drinking Motives Questionnaire is a brief and valid instrument that holds potential for clinical use in mapping drinking motives among treatment seekers.

Sleep problems: a predictor of long-term work disability?

Aims: This study investigates sleep problems as a predictor of long-term work disability. Methods: Data from a community-based four-year prospective study were used. In 1990, all inhabitants of the municipality of Ullensaker, Norway, belonging to six age cohorts (20-22, 30-32, 40-42, 50-52, 60-62, and 70-72 years), were mailed a questionnaire .Of the 1,788 responders who were working and not older than 62 years, 1,426 ( 80%) returned a second questionnaire four years later ( 1994) . Results: Reporting mediocre or poor sleep ( in contrast to good) in 1990 was significantly related to long-term work disability ( > 8 weeks) during the previous 12 months in 1994 ( odds ratio=2.16; 95% confidence interval=1.26-3.72) , after adjustments for age, gender, civil status, body mass index, emotional symptoms, musculoskeletal pain, self-evaluated health, smoking, physical exercise, job satisfaction, and work characteristics . Conclusion: The study indicates that sleep problems are a predictor of long-term work disability.

The Drinking Motives Questionnaire among Swedish psychiatric patients: An exploration of the four-factor structure

INTRODUCTION AND AIMS

Alcohol use above hazardous limits is common among persons with psychiatric disorders, and there is limited knowledge about motives for drinking. The objective of this study was to explore the adequacy of the four-factor structure of drinking motives in an adult psychiatric outpatient population in Sweden by confirming the factor structure in the Drinking Motives Questionnaire (DMQ-R) and in alternative models.

DESIGN AND METHODS

In total, 371 patients responded to the DMQ-R along with the Alcohol Use Disorders Identification Test (AUDIT). AUDIT was used to assess frequency of alcohol consumption, number of drinks consumed on a typical occasion and binge drinking frequency. Confirmatory factor analysis was used to examine the construct validity of the DMQ-R and alternative models, including the short form, DMQ-R SF.

RESULTS

Fit statistics suggested that the original four-factor model had questionable fit (root mean square error of approximation [RMSEA] = 0.10, comparative fit index [CFI] = 0.89, standardised root mean square residual [SRMR] = 0.08). The model with the best fit indices was the DMQ-R SF (RMSEA = 0.07, CFI = 0.97, SRMR = 0.04). When using DMQ-R SF in further analyses enhancement, the most strongly endorsed motives were related to quantity and AUDIT sum score. Coping motives were most strongly related to AUDIT sum score, frequency and binge drinking. Social motives were only related to binge drinking, whereas conformity motives were not statistically associated with any motives.

DISCUSSION AND CONCLUSIONS

The study implies that the 12-item short form, DMQ-R SF, could be more appropriate than the original DMQ-R in this group. [Öster C, Arinell H, Nehlin C. The Drinking Motives Questionnaire among Swedish psychiatric patients: An exploration of the four-factor structure. Drug Alcohol Rev 2017;36:400-407].

High Job Demands, Job Strain, and Iso-Strain are Risk Factors for Sick Leave due to Mental Disorders: A Prospective Swedish Twin Study With a 5-Year Follow-Up

OBJECTIVE

To investigate whether psychosocial work environment and health behaviors are risk factors for sick leave due to mental disorders, and whether familial confounding (genetics and shared environment) explains the associations.

METHODS

Respondents (n = 11,729), given to complete a questionnaire in 2004 to 2006, were followed up approximately 5 years for sick leave spells due to mental disorders, using national registry data. Data were analyzed using logistic regression, and conditional logistic regression for twin pairs discordant for sick leave (cotwin control).

RESULTS

High job demands, job strain, and iso-strain were independent risk factors for sick leave due to mental disorders. Familial factors seem to be of importance in the associations between job support, smoking, a combination of unhealthy behaviors and sick leave.

CONCLUSIONS

Improving the psychosocial work environment may be effective in preventing sick leave due to mental disorders.

Beyond Ischemic Heart Disease: Are There other Health Benefits from Drinking Alcohol?

Evidence is growing that alcohol consumption confers health benefits beyond protection from ischemic heart disease. We review this evidence with regard to cerebrovascular disease, peripheral vascular disease, diabetes, cholelithiasis (gallstones), cognitive functioning, and stress reduction and subjective psychosocial benefits. Other possible benefits are briefly considered. The weight of evidence suggests that low-level alcohol consumption offers some protection against ischemic stroke. The evidence that moderate alcohol consumption protects against diabetes and gallstones is also fairly strong. The possibility of other health benefits cannot be dismissed. For all the conditions considered, more research is indicated. The application of more appropriate statistical techniques, studies of patterns of drinking, and experimental approaches to delineating underlying mechanisms should enable firmer conclusions to be drawn. A better understanding of both the benefits and the risks of alcohol use for individuals and populations will facilitate the development of appropriate program and policy interventions to promote health.

A randomized clinical trial of Motivational Interviewing to reduce alcohol and drug use among patients with depression

OBJECTIVE

This study examined the efficacy of Motivational Interviewing (MI) to reduce hazardous drinking and drug use among adults in treatment for depression.

METHOD

Randomized controlled trial based in a large outpatient psychiatry program in an integrated health care system in Northern California. The sample consisted of 307 participants ages 18 and over who reported hazardous drinking, drug use (primarily cannabis) or misuse of prescription drugs in the prior 30 days, and who scored ≥5 on the Patient Health Questionnaire (PHQ-9). Participants were randomized to receive either 3 sessions of MI (1 in person and 2 by phone) or printed literature about alcohol and drug use risks (control), as an adjunct to usual outpatient depression care. Measures included alcohol and drug use in the prior 30 days and PHQ-9 depression symptoms. Participants completed baseline in-person interviews and telephone follow-up interviews at 3 and 6 months (96 and 98% of the baseline sample, respectively). Electronic health records were used to measure usual care.

RESULTS

At 6 months, MI was more effective than control in reducing rate of cannabis use (p = .037); and hazardous drinking (≥4 drinks in a day for women, ≥5 drinks in a day for men; p = .060). In logistic regression, assignment to MI predicted lower cannabis use at 6 months (p = .016) after controlling for covariates. Depression improved in both conditions.

CONCLUSIONS

MI can be an effective intervention for cannabis use and hazardous drinking among patients with depression. (PsycINFO Database Record

Hazardous alcohol use in general psychiatric outpatients

BACKGROUND

Hazardous alcohol use in psychiatric patients may increase the risk of the development of a substance use disorder and negatively affect the course of the psychiatric disorder.

AIMS

To investigate the prevalence of hazardous alcohol and drug use in a Swedish psychiatric outpatient population with particular focus on hazardous alcohol consumption and assess relationships of hazardous alcohol use to sex, age and psychiatric diagnosis.

METHODS

General psychiatric outpatients, n = 1,679, completed a self-rating Alcohol Use Disorders Identification Test (AUDIT).

RESULTS

Hazardous or harmful alcohol habits occurred among 22% of all women and 30% of all men with higher prevalence among younger patients. Nine percent of all women and 22 % of all men reported binge drinking. Binge drinking was more frequent in younger subjects. Women with a personality disorder diagnosis had a higher frequency of at risk drinking. Apart from that, psychiatric diagnosis was unrelated to rate of hazardous drinking.

CONCLUSIONS

Hazardous alcohol use was common in this psychiatric outpatient population. With regard to possible risks related to drinking in psychiatric patients, alcohol habits should be assessed as a part of good clinical practice.

Alcohol and drug use, smoking, and gambling among psychiatric outpatients: a 1-year prevalence study

BACKGROUND AND AIMS

Studies of alcohol habits in general psychiatric populations are scarce. The objective was to investigate alcohol and drug use, smoking, and gambling in a clinical sample of psychiatric outpatients. A further aim was to study age and gender differences in the rates of these habits.

METHODS

Data were collected among psychiatric outpatients with mainly mood (47%) and anxiety (35%) disorders. A questionnaire package was distributed, including AUDIT (Alcohol Use Disorders Identification Test), DUDIT (Drug Use Disorders Identification Test), tobacco items, and gambling items. Two major drinking categories were formed: "Nonhazardous alcohol use" (NH) and "Alcohol use above hazardous levels" (AH).

RESULTS

In total, 2160 patients (65% females) responded to the questionnaire package. The AH rate was high among psychiatric outpatients (28.4%), particularly among young females (46.6%). Young female patients also reported a high prevalence of problematic drug use (13.8%). Problematic drug use, daily smoking, and problematic gambling were frequent. The unhealthy habits were linked to AH.

CONCLUSIONS

Alcohol and drug use, smoking, and gambling are all highly prevalent among psychiatric outpatients. Young females are in particular need of attention. Interventions should be tailored for co-occurring psychiatric disorders and applied within routine psychiatric care.

Brief alcohol screening in a clinical psychiatric population: special attention needed

INTRODUCTION AND AIMS

Abbreviated versions of the Alcohol Use Disorders Identification Test (AUDIT) and single-item screeners show promising results but have not previously been investigated in a clinical psychiatric setting. The aim of the present study was to investigate the capacity of three brief screening methods to detect hazardous drinking in a psychiatric treatment-seeking population.

DESIGN AND METHODS

Data were collected from consecutive patients (n = 1811) visiting a general psychiatric clinic. The screening capacity of the heavy episodic drinking (HED) screener, AUDIT item # 3 (AUDIT-3) and the three consumption items of AUDIT (AUDIT-C) was compared to the result of the full 10-item AUDIT with cut-off points 6 for women and 8 for men.

RESULTS

The HED screener and AUDIT-3 with recommended cut-offs captured low rates of hazardous drinkers when compared to the full AUDIT. Lowering the cut-offs created rates far above those of the full AUDIT. AUDIT-C with recommended cut-off limits categorised nearly the same rates of men as the full AUDIT but much higher rates of women. Raising the cut-off for women approached the detection rate of AUDIT-C closely to that of the full AUDIT.

DISCUSSION AND CONCLUSIONS

The findings of this study suggest that the HED screener is not sensitive enough in the clinical psychiatric setting. When designing alcohol screening measures to be used all over health-care organisations, special attention should be paid to psychiatric patients. If a somewhat more extensive screening tool is used, the full AUDIT is recommended.

Circadian rhythm sleep disorders

This article begins with a review of the major central nervous system functional systems that allow for optimal alertness during the waking day, and the rapid initiation and good maintenance of sleep at night. Subsequent sections discuss each of the 6 primary circadian rhythm sleep disorders. Attention is paid to known or suspected pathophysiology, diagnostic criteria and assessment methodology, and treatment options. The article concludes with a discussion of challenges that must be met to improve the recognition and treatment of these quite impactful sleep disorders.

Chronic ethanol drinking reduces native T-type calcium current in the thalamus of nonhuman primates

BACKGROUND

Chronic ethanol use is known to disrupt normal sleep rhythms, but the cellular basis for this disruption is unknown. An important contributor to normal sleep patterns is a low-threshold calcium current mediated by T-type calcium channels. The T-type calcium current underlies burst responses in thalamic nuclei that are important to spindle propagation, and we recently observed that this current is sensitive to acute low doses of ethanol.

METHODS

We used a combination of current clamp and voltage clamp recordings in an in vitro brain slice preparation of the dorsal lateral geniculate nucleus (LGN) of macaque monkeys that have chronically self-administered ethanol to determine whether chronic ethanol exposure may affect T-type currents.

RESULTS

Current clamp recordings from the LGN of ethanol naive macaques showed characteristic burst responses. However, recordings from the LGN in macaques that self-administered ethanol revealed a significant attenuation of bursts across a range of voltages (n=5). Voltage clamp recordings from control LGN neurons (n=16) and neurons (n=29) from brain slices from chronically drinking macaques showed no significant differences (P>0.05) in T-type current kinetics or in the membrane resistance of the thalamic cells between the two cohorts. However, mean T-type current amplitude measured in the chronically drinking animals was reduced by 31% (P<0.01).

CONCLUSIONS

We conclude that chronic ethanol self-administration reduces calcium currents in thalamic relay cells without altering underlying current kinetics, which may provide a mechanistic framework for the well-documented disruptions in sleep/wake behavior in subjects with chronic ethanol exposure.

Alcohol-attributable mortality and potential years of life lost in Canada 2001: implications for prevention and policy

BACKGROUND

Alcohol is one of the most important risk factors for burden of disease.

OBJECTIVE

To estimate the number of deaths and the years of life lost attributable to alcohol for Canada 2001 using different ways to measure alcohol exposure.

METHODS

Distribution of exposure was taken from a major national survey of Canada, the Canadian Addiction Survey, and corrected for per capita consumption from production and sales. For chronic disease, risk relations were taken from the published literature and combined with exposure to calculate age- and sex-specific alcohol-attributable fractions (AAFs). For injury, AAFs were taken directly from available statistics. Information on mortality, with cause of death coded according to the International Classification of Diseases version 10 (ICD-10) was obtained from Statistics Canada.

RESULTS

For Canada in 2001, 4,010 of all deaths in the group below 70 years of age were attributable to alcohol, 3,132 in men and 877 in women. This constituted 6.0% of all deaths in Canada in this age group, 7.6% for men, and 3.5% for women. The 4,010 deaths are a net figure, already taking into account the deaths prevented by moderate consumption of alcohol. Main causes of alcohol-attributable death were unintentional injuries, malignant neoplasms and digestive diseases. Ischaemic heart disease (IHD) was the biggest cause of death prevented by alcohol, with 78.7% of all alcohol-attributable prevented deaths in the age groups of 70 years and above. A total of 144,143 years of life were lost prematurely in Canada in that year, 113,079 years in men and 31,063 years in women.

DISCUSSION

Regardless of the assumptions made, alcohol is a major contributor to mortality in Canada. The impact of alcohol on social life is not confined to mortality, as other studies indicated that alcohol is linked even more strongly to disability and social harm. Alcohol-attributable harm could be substantially reduced, however, if known effective policies were introduced.

The AUDIT-C: screening for alcohol use disorders and risk drinking in the presence of other psychiatric disorders

This article examines the performance of the AUDIT-C, as embedded in a large national survey, as a screener for alcohol use disorders (AUDs) and risk drinking among individuals with past-year psychopathology. The analysis is based on data collected in personal interviews from a representative population sample of US adults. The study population consisted of past-year drinkers with any past-year mood disorder (n = 2818), any past-year anxiety disorder (n = 3173), or any personality disorder (n = 4389). Screening performance was evaluated by means of sensitivity, specificity, and areas under receiver operating characteristic curves (AUCs). The AUCs for the AUDIT-C were from 0.888 to 0.893 for alcohol dependence, from 0.864 to 0.876 for any AUD, and from 0.941 to 0.951 for any AUD or risk drinking-all on a par with those observed in the general population. Among men, cut points of either > or =5 or > or =6 points (the former favoring sensitivity and the latter favoring specificity) were optimal for detecting dependence, and cut points of > or =5 points were optimal for any AUD and for any AUD or risk drinking. Among women, a cut point of > or =4 points was optimal for the outcomes of both alcohol dependence and any AUD, whereas a cut point of > or =3 points was preferable for detecting any AUD or risk drinking.

Associations of frequent sleep insufficiency with health-related quality of life and health behaviors

BACKGROUND AND PURPOSE

Sleep-related problems, which affect 50-70 million Americans, involve all areas of life, including cognitive performance, emotional well-being, work and leisure-time activities, and general physical and mental well-being. We examined the association of insufficient sleep with health-related quality of life (HRQOL) and health behaviors.

PATIENTS AND METHODS

Data were obtained from the Behavioral Risk Factor Surveillance System, an ongoing, state-based, random-digit telephone survey of the non-institutionalized US population aged >or =18 years. In 2002, HRQOL measures were administered in 18 states and the District of Columbia, yielding complete responses to questions regarding sleep and demographic characteristics from 98% of study participants (n=79,625).

RESULTS

An estimated 26% of adults reported frequent (> or =14 days in the past 30 days) sleep insufficiency. They were significantly more likely than those without frequent sleep insufficiency to report fair/poor general health, frequent physical distress, frequent mental distress, activity limitations, depressive symptoms, anxiety, and pain. In addition, they were significantly more likely to smoke, to be physically inactive, to be obese, and, among men, to drink heavily.

CONCLUSION

Insufficient sleep is associated with a variety of adverse health behaviors and impairment in all HRQOL domains investigated. Accordingly, assessment of sleep appears to be an important component of general medical care. Moreover, expanded assessment of sleep in the general population may provide a better understanding of prevalence of impaired sleep and its many implications.

Effectiveness of complementary and self-help treatments for anxiety disorders

OBJECTIVES

To review the evidence for the effectiveness of complementary and self-help treatments for anxiety disorders.

DATA SOURCES

Systematic literature search using PubMed, PsycLit, and the Cochrane Library.

DATA SYNTHESIS

108 treatments were identified and grouped under the categories of medicines and homoeopathic remedies, physical treatments, lifestyle, and dietary changes. We give a description of the 34 treatments (for which evidence was found in the literature searched), the rationale behind the treatments, a review of studies on effectiveness, and the level of evidence for the effectiveness studies.

CONCLUSIONS

The treatments with the best evidence of effectiveness are kava (for generalised anxiety), exercise (for generalised anxiety), relaxation training (for generalised anxiety, panic disorder, dental phobia and test anxiety) and bibliotherapy (for specific phobias). There is more limited evidence to support the effectiveness of acupuncture, music, autogenic training and meditation for generalised anxiety; for inositol in the treatment of panic disorder and obsessive-compulsive disorder; and for alcohol avoidance by people with alcohol-use disorders to reduce a range of anxiety disorders.

Ethanol influences on native T-type calcium current in thalamic sleep circuitry

Ethanol is known to disrupt normal sleep rhythms; however, the cellular basis for this influence is unknown. This study uses an in vitro slice preparation coupled with electrophysiological recordings to probe neuronal responses to acute ethanol exposure. Recordings were conducted in ferret and rat thalamic slices, since thalamic circuitry is an integral component of sleep/wake cycles and sleep spindles. A key mediator of spindle wave activity is the low-threshold calcium current (T-type current). The T-type current underlies burst responses in the lateral geniculate and thalamic reticular nuclei that are important in spindle propagation. Whole cell patch recordings in thalamic brain slices revealed that ethanol has a differential, dose-dependent effect on the native T-type current in thalamic relay cells. Low concentrations of ethanol (2.5, 5, and 10 mM) enhance T-type current (n = 35), whereas higher concentrations of ethanol (20 and 50 mM) decrease T-type current (n = 27). To address whether this dose-dependent effect was due to variation between cells, in a subset we verified the differential effect within the same cell (n = 7). In an effort to examine whether the biphasic effects on the current were due to the order of ethanol exposures, we varied the order of high and low ethanol concentrations within the same cell. The ability of ethanol to perturb calcium currents in thalamic relay cells may provide a mechanistic framework for the well documented disruptions in sleep/wake behavior in subjects with ethanol exposure.

Insomnia, self-medication, and relapse to alcoholism

OBJECTIVE

This study was an investigation of the frequencies of insomnia and its self-medication with alcohol in a group of alcoholic patients, as well as the relationship of these variables to alcoholic relapse.

METHOD

The subjects were 172 men and women receiving treatment for alcohol dependence. They completed a sleep questionnaire, measures of alcohol problem severity and depression severity, and polysomnography after at least 2 weeks of abstinence.

RESULTS

On the basis of eight items from the Sleep Disorders Questionnaire, 61% of the subjects were classified as having symptomatic insomnia during the 6 months before treatment entry. Compared to patients without insomnia, patients with insomnia were more likely to report frequent alcohol use for sleep (55% versus 28%), had significantly worse polysomnographic measures of sleep continuity, and had more severe alcohol dependence and depression. Among 74 alcoholics who were followed a mean of 5 months after treatment, 60% with baseline insomnia versus 30% without baseline insomnia relapsed to any use of alcohol, a significant difference. Insomnia remained a robust predictor of relapse after application of logistic regression analysis to control for other variables. A history of self-medicating insomnia with alcohol did not significantly predict subsequent relapse.

CONCLUSIONS

The majority of alcoholic patients entering treatment reported insomnia symptoms. Given the potential link between insomnia and relapse, routine questions about sleep in clinical and research settings are warranted.