Gender and psychiatric comorbidity: impact on clinical presentation of alcohol dependence

Substance use in women: Current status and future directions

Alcohol and substance use, until recently, were believed to be a predominantly male phenomenon. Only in the last few decades, attention has shifted to female drug use and its repercussions in women. As the numbers of female drug users continue to rise, studies attempt to understand gender-specific etiological factors, phenomenology, course and outcome, and issues related to treatment with the aim to develop more effective treatment programs. Research has primarily focused on alcohol and tobacco in women, and most of the literature is from the Western countries with data from developing countries like India being sparse. This review highlights the issues pertinent to alcohol and substance use in women with a special focus to the situation in India.

The role of 5-HTTLPR polymorphism in alcohol craving experience

The way in which genetic risk mediates the development of craving in alcohol dependence is still relatively unknown. The authors sought to clarify the extent to which alcohol craving could be predicted by a relevant polymorphism in the promoter region of the gene encoding the 5-HT transporter (5-HTTLPR). A sample of 101 alcohol-dependent patients admitted for alcohol treatment was recruited for the study. At admission, blood samples were taken for DNA extraction and alcohol craving information was collected with a composite measure. The 5-HTT polymorphism was genotyped. Alcohol dependent patients who were homozygous for the long allele (LL) self-reported higher scores of craving when compared to patients that were homozygous for the short allele (SS). However, the results were not statistically significant. Also, no significant associations were observed between the 5-HTTLPR genotype and other drinking variables. No 5-HTTLPR genotype effects were observed on alcohol craving experience in a sample of alcohol-dependent outpatients.

Depressive symptoms and alcohol correlates among Brazilians aged 14 years and older: a cross-sectional study

Background

The associations between depressive symptoms and alcohol-related disorders, drinking patterns and other characteristics of alcohol use are important public health issues worldwide. This study aims to study these associations in an upper middle-income country, Brazil, and search for related socio-demographic correlations in men and women.

Methods

A cross-sectional study was conducted between November 2005 and April 2006. The sample of 3,007 participants, selected using a multistage probabilistic sampling method, represents the Brazilian population aged 14 and older. Depressive symptoms were assessed using the Center for Epidemiologic Studies Depression Scale and alcohol dependence was assessed using the Composite International Diagnostic Interview. Associations assessed using bi-variate analysis were tested using Rao-Scott measures. Gender specific multinomial logistic regression models were developed.

Results

Among the participants with alcohol dependence, 46% had depressive symptoms (17.2% mild/moderate and 28.8% major/severe; p < 0.01); 35.8% (p = 0.08) of those with alcohol abuse and 23.9% (p < 0.01) of those with a binge-drinking pattern also had depressive symptoms. Alcohol abstainers and infrequent drinkers had the highest prevalence of major/severe depressive symptoms, whereas frequent heavy drinkers had the lowest prevalence of major/severe depressive symptoms. In women, alcohol dependence and the presence of one or more problems related to alcohol consumption were associated with higher risks of major/severe depressive symptoms. Among men, alcohol dependence and being ≥45 years old were associated with higher risks of major/severe depressive symptoms.

Conclusions

In Brazil, the prevalence of depressive symptoms is strongly related to alcohol dependence; the strongest association was between major/severe depressive symptoms and alcohol dependence in women. This survey supports the possible association of biopsychosocial distress, alcohol consumption and the prevalence of depressive symptoms in Brazil. Investing in education, social programs, and care for those with alcohol dependence and major/severe depressive symptoms, especially for such women, and the development of alcohol prevention policies may be components of a strategic plan to reduce the prevalence of depression and alcohol problems in Brazil. Such a plan may also promote the socio-economic development of Brazil and other middle-income countries.

Neurochemical mechanisms of alcohol withdrawal

Alcohol dependence encompasses a serious medical and societal problem that constitutes a major public health concern. A serious consequence of dependence is the emergence of symptoms associated with the alcohol withdrawal syndrome when drinking is abruptly terminated or substantially reduced. Clinical features of alcohol withdrawal include signs of central nervous system hyperexcitability, heightened autonomic nervous system activation, and a constellation of symptoms contributing to psychologic discomfort and negative affect. The development of alcohol dependence is a complex and dynamic process that ultimately reflects a maladaptive neurophysiologic state. Perturbations in a wide range of neurochemical systems, including glutamate, γ-aminobutyric acid, monoamines, a host of neuropeptide systems, and various ion channels produced by the chronic presence of alcohol ultimately compromise the functional integrity of the brain. These neuroadaptations not only underlie the emergence and expression of many alcohol withdrawal symptoms, but also contribute to enhanced relapse vulnerability as well as perpetuation of uncontrolled excessive drinking. This chapter highlights the hallmark features of the alcohol withdrawal syndrome, and describes neuroadaptations in a wide array of neurotransmitter and neuromodulator systems (amino acid and monoamine neurotransmitter, neuropeptide systems, and various ion channels) as they relate to the expression of various signs and symptoms of alcohol withdrawal, as well as their relationship to the significant clinical problem of relapse and uncontrolled dangerous drinking.

Gender differences in relationships among PTSD severity, drinking motives, and alcohol use in a comorbid alcohol dependence and PTSD sample

Alcohol dependence (AD) and posttraumatic stress disorder (PTSD) are highly prevalent and comorbid conditions associated with a significant level of impairment. Little systematic study has focused on gender differences specific to individuals with both AD and PTSD. The current study examined gender-specific associations between PTSD symptom severity, drinking to cope (i.e., reduce negative affect), drinking for enhancement (i.e., increase positive affect), and average alcohol use in a clinical sample of men (n = 46) and women (n = 46) with comorbid AD and PTSD. Results indicated that PTSD symptoms were highly associated with drinking-to-cope motives for both men and women, but with greater drinking for enhancement motives for men only. Enhancement motives were positively associated with average alcohol quantity for both men and women, but coping motives were significantly associated with average alcohol quantity for women only. These findings suggest that for individuals with comorbid AD and PTSD, interventions that focus on reducing PTSD symptoms are likely to lower coping motives for both genders, and targeting coping motives is likely to result in decreased drinking for women but not for men, whereas targeting enhancement motives is likely to lead to reduced drinking for both genders.

Sex differences in prevalence and comorbidity of alcohol and drug use disorders: results from wave 2 of the National Epidemiologic Survey on Alcohol and Related Conditions

OBJECTIVE

The present study examined sex differences in lifetime Axis I and II psychiatric comorbidity of DSM-IV alcohol use disorders (AUDs) and drug use disorders (DUDs) among general population U.S. adults.

METHOD

Using data from Waves 1 and 2 of the National Epidemiologic Survey on Alcohol and Related Conditions, Wave 2 lifetime prevalences of each disorder comorbid with alcohol abuse, alcohol dependence, drug abuse, and drug dependence were compared between men and women. Sex-specific associations of alcohol, any drug, and cannabis- and cocaine-specific abuse and dependence with each comorbid disorder were examined using logistic regression, first with adjustment for sociodemographic variables and then with additional adjustment for all other psychiatric disorders.

RESULTS

Prevalences of most comorbid disorders differed significantly by sex among respondents with each AUD and DUD. However, after adjustment for sociodemographic characteristics and additional co-occurring psychiatric diagnoses, there were few sex differences in unique comorbid associations of specific AUDs and DUDs with specific psychiatric disorders.

CONCLUSIONS

Rates of psychiatric disorders comorbid with AUDs and DUDs indicate large burdens of morbidity in both sexes, highlighting the need for careful assessment and appropriate treatment of both substance use and mental health disorders. The unique comorbid associations with AUDs and DUDs identified in this study further indicate the need for prospective etiological research to characterize these associations, their underlying mechanisms, and the possible sex specificity of those mechanisms.

Only male mice show sensitization of handling-induced convulsions across repeated ethanol withdrawal cycles

BACKGROUND

Alcohol abuse, especially when experienced in multiple cycles of chronic abuse and withdrawal, leads to a sensitization of central nervous system hyperexcitability that may culminate in overt expression of seizures. In spite of the growing prevalence of alcohol abuse and dependence in females shown in recent epidemiologic studies, evidence of sexual dimorphism in the expression of alcohol withdrawal-induced seizures and the development of seizure sensitization following multiple cycles of ethanol (EtOH) exposure and withdrawal has not been examined in either animal models or in clinical reports.

METHODS

Subjects in these experiments were male and female C3H/Hecr mice. The female mice were intact or ovariectomized, with ovariectomized mice receiving 17-beta-estradiol or placebo pellets. All mice were exposed to 4 cycles of exposure to 16-hour EtOH vapor, separated by 8-hour withdrawal periods. During each 8-hour withdrawal, hourly assessment of seizure propensity was assessed as handling-induced convulsions. Additional assessments were taken up to 72 hours after the final EtOH withdrawal cycle.

RESULTS

Male and female mice showed similar seizure propensity during an initial withdrawal from chronic EtOH. Across subsequent withdrawal cycles, however, male mice exhibited a robust increase in seizure severity beginning with the third withdrawal cycle. In marked contrast, female mice failed to demonstrate sensitization of seizure severity. The lack of seizure sensitization following up to 4 cycles of alcohol exposure and withdrawal could not be explained by hormonal status (presence or absence of estrogen) or by sex differences in blood alcohol levels.

CONCLUSIONS

Male and female mice exposed to the same number of cycles of EtOH withdrawal demonstrate differences in expression of seizures. Males show the typical sensitization of seizures, or kindling response, which has been reported clinically as well as in animal models, but females do not. The reason for the lack of seizure sensitization in female mice remains to be elucidated, but may be related to sex differences in alcohol effects on excitatory/inhibitory neurotransmission, rather than to hormonal or blood alcohol level differences.

Substance abuse treatment entry, retention, and outcome in women: a review of the literature

This paper reviews the literature examining characteristics associated with treatment outcome in women with substance use disorders. A search of the English language literature from 1975 to 2005 using Medline and PsycInfo databases found 280 relevant articles. Ninety percent of the studies investigating gender differences in substance abuse treatment outcomes were published since 1990, and of those, over 40% were published since the year 2000. Only 11.8% of these studies were randomized clinical trials. A convergence of evidence suggests that women with substance use disorders are less likely, over the lifetime, to enter treatment compared to their male counterparts. Once in treatment, however, gender is not a significant predictor of treatment retention, completion, or outcome. Gender-specific predictors of outcome do exist, however, and individual characteristics and treatment approaches can differentially affect outcomes by gender. While women-only treatment is not necessarily more effective than mixed-gender treatment, some greater effectiveness has been demonstrated by treatments that address problems more common to substance-abusing women or that are designed for specific subgroups of this population. There is a need to develop and test effective treatments for specific subgroups such as older women with substance use disorders, as well as those with co-occurring substance use and psychiatric disorders such as eating disorders. Future research on effectiveness and cost-effectiveness of gender-specific versus standard treatments, as well as identification of the characteristics of women and men who can benefit from mixed-gender versus single-gender treatments, would advance the field.

Engendering health disparities

How is gender implicated in our exploration of health disparities in Canada? Set against the backdrop of federal government policy, this review paper examines the ways in which gender intersects with other health determinants to produce disparate health outcomes. An overview of salient issues including the impact of gender roles, environmental exposures, gender violence, workplace hazards, economic disparities, the costs of poverty, social marginalization and racism, aging, health conditions, interactions with health services, and health behaviours are considered. This review suggests health is detrimentally affected by gender roles and statuses as they intersect with economic disparities, cultural, sexual, physical and historical marginalization as well as the strains of domestic and paid labour. These conditions result in an unfair health burden borne in particular by women whose access to health determinants is--in various degrees--limited. While progress has certainly been made on some fronts, the persistence of health disparities among diverse populations of women and men suggests a postponement of the vision of a just society with health for all that was articulated in the Federal Plan on Gender Equality. Commitment, creativity and collaboration from stakeholders ranging from various levels of government, communities, academics, non-governmental agencies and health professionals will be required to reduce and eliminate health disparities between and among all members of our society.

Determining the Need for Gender-Specific Chemical Dependence Treatment: Assessment of Treatment Variables

The effects of gender on selected treatment variables of substance-abusing persons were investigated with the long-term goal of designing gender-appropriate programs for the treatment of addiction. A population of 120 male and female substance abusers was drawn from two urban outpatient drug treatment centers and one HIV outpatient counseling center. Participants were given questionnaires to measure the following variables: trait anxiety, depression, coping style, and level of differentiation of self. Results demonstrated significant gender differences in differentiation of self (p < .005) and coping styles (p < .02) but no significant differences in anxiety or depression.

Antidepressant treatment of co-occurring depression and alcohol dependence

The use of antidepressant pharmacotherapy to treat patients with co-occurring depression and alcohol dependence is controversial. There is a stigma attached to giving medications to alcohol-dependent persons. Also, empirical evidence is sparse and inconsistent, which discourages the use of antidepressants in these patients. Historically, it has been a challenge to accurately diagnose a depressive disorder in the presence of alcohol dependence. In addition, early clinical studies were fraught with methodological problems; however, improved diagnostic assessments are now available, and in the last decade, results from well-controlled trials appear to support the use of antidepressants in this patient population in the specific role of relieving depressive symptoms. The majority of these trials also demonstrate that antidepressants have relatively little impact on reducing heavy drinking in this patient population, even though the medications reduce depressive symptoms. Newer approaches to treating patients with co-occurring depression and alcohol dependence suggest adding to the antidepressant a pharmacotherapy that directly impacts drinking. The findings from this review better define the action of antidepressants in patients with co-occurring depression and alcohol dependence as specific to reducing depressive symptoms, and these medications and their action on mood have little impact on treating the co-occurring alcohol dependence.

Alcohol Dependence, Other Psychiatric Disorders, and Health‐Related Quality of Life: A Replication Study in a Large Random Sample of Enrollees in the Veterans Health Administration

The purpose of this study was to investigate the relationship between alcohol dependence and health-related quality of life (HRQoL) in people with and without other selected psychiatric disorders. A sample of 127,308 Veterans Health Administration enrollees completed a survey that included questions about alcohol use and the Veterans SF-36, a well-validated measure of HRQoL. In addition, a Veterans Administration database was used to obtain respondents' past-year history of alcohol dependence and other psychiatric disorders. Comorbid psychiatric disorders significantly moderated or attenuated the relationship between alcohol dependence and HRQoL. Respondents with a history of alcohol dependence plus one or more other psychiatric disorders had significantly lower HRQoL in domains pertaining to psychological and social functioning than respondents with alcohol dependence only. Effect size differences (mean differences of clinical groups/pooled standard deviation) were large (greater than 0.80 of one standard deviation). Respondents with a history of alcohol dependence only vs. no history of alcohol dependence had poorer HRQoL. Effect size differences were small to moderate (between 0.20 and 0.50 of one standard deviation). Findings highlight the important moderating influence of comorbid psychiatric disorders in the relationship between alcohol dependence and HRQoL. As comorbid psychiatric disorders are often associated with poorer treatment outcome, findings also provide strong corroboration for the importance of treating other psychiatric disorders concurrently with alcohol dependence.

The status of serotonin-selective pharmacotherapy in the treatment of alcohol dependence

Research performed during the past 20 years has shown that serotonin (5-hydroxytryptamine; 5-HT) neurotransmission is related to alcohol dependence. Both theoretical and empirical research have supported the idea that alcohol dependence is a chronic disease and that, in addition, biological vulnerabilities contribute to the pathogenesis of alcohol dependence. Preclinical studies have consistently demonstrated that there is a relationship between 5-HT function and alcohol consumption. Furthermore, there is evidence building that lends support for the existence of distinct alcoholic subtypes that may be differentiated by the type or complexity of their 5-HT dysfunction. Beyond excessive drinking, behaviors that are indicators of 5-HT dysregulation are depression, anxiety, impulsiveness, and early-onset problem drinking. This chapter will discuss the usefulness of 5-HT-selective pharmacotherapy in treating alcohol dependence and will provide both historical and current perspectives on its use.

Gender differences in predictors of initiation, retention, and completion in an HMO-based substance abuse treatment program

We studied gender differences in treatment process indicators among 293 HMO members recommended for substance abuse treatment. Treatment initiation, completion, and time spent in treatment did not differ by gender, but factors predicting these outcomes differed markedly. Initiation was predicted in women by alcohol diagnoses; in men, by being employed or married. Failure to initiate treatment was predicted in women by mental health diagnoses; in men, by less education. Treatment completion was predicted in women by higher income and legal/agency referral; in men, by older age. Failure to complete was predicted in women by more dependence diagnoses and higher Addiction Severity Index Employment scores; in men, by worse psychiatric status, receiving Medicaid, and motivation for entering treatment. More time spent in treatment was predicted, in women, by alcohol or opiate diagnoses and legal/agency referral; in men, by fewer mental health diagnoses, higher education, domestic violence victim status, and prior 12-step attendance. Clinical implications of results are discussed.