Gut microbiome in alcohol use disorder:Implications for health outcomes and therapeutic strategies-a literature review

Alcohol use disorder(AUD)represents a major public health issue which affects millions of people globally and consist a chronic relapsing condition associated with substantial morbidity and mortality.The gut microbiome plays a crucial role in maintaining overall health and has emerged as a significant contributor to the pathophysiology of various psychiatric disorders.Recent evidence suggests that the gut microbiome is intimately linked to the development and progression of AUD,with alcohol consumption directly impacting its composition and function.This review article aims to explore the intricate relationship between the gut microbiome and AUD,focusing on the implications for mental health outcomes and potential therapeutic strategies.We discuss the bidirectional communication between the gut microbiome and the brain,highlighting the role of microbiotaderived metabolites in neuroinflammation,neurotransmission,and mood regulation.Furthermore,we examine the influence of AUD-related factors,such as alcohol-induced gut dysbiosis and increased intestinal permeability,on mental health outcomes.Finally,we explore emerging therapeutic avenues targeting the gut microbiome in the management of AUD,including prebiotics,probiotics,and fecal microbiota transplantation.Understanding the complex interplay between the gut microbiome and AUD holds promise for developing novel interventions that could improve mental health outcomes in individuals with AUD.

The relationship between child maltreatment and axis I mental disorders: A summary of the published literature from 2006 to 2010

Research has indicated that child maltreatment is associated with an increased likelihood of mental disorders and suicidal ideation and attempts that continues into adulthood. The purpose of this paper is to provide a synopsis of the recent published research from 2006 to 2010 on the association between child maltreatment and Axis I mental disorders and suicidal ideation and attempts. The databases MEDLINE and PsycINFO were searched for relevant and high quality citations up to October 2010. The results indicated that all types of child maltreatment examined are linked to reduced mental health. A general noted trend in the literature is that earlier age of onset of child maltreatment is associated with poorer mental health outcomes. Sex differences do exist with some disorders being more likely among males (e.g., anti-social behaviour) and other more likely among females (e.g., depression, PTSD, substance use disorders) following child maltreatment.

Alcohol and drug use disorders in adult attentiondeficit/hyperactivity disorder:Prevalence and associations with attention-deficit/hyperactivity disorder symptom severity and emotional dysregulation

BACKGROUND High risk of alcohol and drug use disorders in people with attentiondeficit/hyperactivity disorder(ADHD)calls for exploratory research of relationships with clinical features of ADHD.AIM To estimate prevalence of alcohol/drug use disorders and associations with ADHD symptom severity and emotional dysregulation,in adults with ADHD.METHODS This observational cross-sectional clinical study consisted of patients admitted to a private psychiatric outpatient clinic in Oslo,Norway(2014-2018).Five-hundred and fifty-eight eligible patients diagnosed with ADHD(Diagnostic and Statistical Manual of Mental Disorders,Fifth Edition(DSM-5)criteria)agreed to participate.Alcohol and drug use disorders were diagnosed using the Mini International Neuropsychiatric Interview(MINI).Dependence and abuse were merged into“use”disorder as in MINI version 7.0/DSM-5.Questions were related both to lifetime and the past 12-mo.ADHD severity was assessed by the Adult ADHD Self Report Scale(ASRS).Subdivisions of the ASRS questionnaire as inattentive items and hyperactive/impulsivity items were recorded separately.Emotional dysregulation was assessed by the eight-item version of Barkley’s Current Behavior Scale-Self Report.RESULTS The 12-mo prevalence was 5.3%for alcohol use disorder and 13.7%for drug use disorder.The lifetime prevalence was 12.0%for alcohol use disorder and 27.7%for drug use disorder.Men had higher rates of both alcohol use disorder and drug use disorder compared to women.The prevalence of drug use disorder was more than twice that of alcohol use disorder for both sexes.The drugs most participants reported having used were(in descending order):Amphetamine(19.1%),cannabis(17.1%),cocaine or ecstasy(7.4%),benzodiazepines(7.4%),and heroin or other opioids(2.9%).Lifetime drug use disorder was significantly associated with both hyperactivity-impulsivity symptoms and emotional dysregulation symptom severity.Lifetime alcohol use disorder,on the other hand,was not significantly associated with ADHD symptoms or emotional dysregulation when adjusted for gender and age.CONCLUSION Patients with ADHD have a high lifetime prevalence of drug use disorder,which is associated with higher levels of hyperactivity-impulsivity symptoms and emotional dysregulation.

Alcohol Use Disorders and Associated Factors among an Elderly Community Sample in Nigeria: A Cross-Sectional Survey

Background: Alcohol Use Disorders (AUDs) in the elderly are associated with impairments in physical, psychological, social and cognitive functioning. Both the elderly men and women who drink alcohol are at a greater risk of social isolation and economic deprivation and the women in particular are in the danger of rapid development of dependence a phenomenon termed “telescoping” dependence. This study seeks to determine the prevalence of alcohol use disorders as well as their associated factors among the elderly in Jos South LGA, Plateau State, Nigeria. Methods: A community-based cross-sectional study of elderly (≥60 years) men and women. A total of 400 out of a total of 422 elderly community dwellers identified were interviewed with the aid of a composite questionnaire incorporating the socio-demography, Alcohol Smoking and Substance Involvement Screening Test (ASSIST), Mini International Neuropsychiatric Interview (MINI) and the 12-item General Health Questionnaire (GHQ-12). Results: The lifetime and current prevalence of alcohol use were 69.8% and 45.5% respectively. The prevalence of AUDs was (n = 52, 13.0%). AUDs was significantly associated with being male (OR = 2.57, 95%CI: 1.35 - 3.77, p < 0.01). Participants with AUDs were more likely to report difficulty ambulating (χ2 = 0.34, 0.56), cardiovascular (χ2 = 0.42, p = 0.52), respiratory (χ2 = 0.55, p = 0.46), and digestive (χ2 = 0.17, p = 0.68) problems, though not statistically significant. Similarly, no significant associations were seen with probable psychiatric co-morbidity (χ2 = 2.35, p = 0.13) and chronic pain (χ2 = 0.52, p = 0.47). Conclusions: Alcohol use and use disorders were common in this elderly cohort. AUDs were associated with poorer health indices.

Co-Occurring Polysubstance Use and Physical Disease of Persons with Mental Disorders in Residential Treatment Program

The purpose of this study was to describe the prevalence of co-occurring polysubstance use and to examine the differences in physical disease between polysubstance users and single/no substance users with mental disorders. This retrospective cross-sectional study included 1949 clinical records of psychiatric patients from 11 residential treatment programs between 2007 and 2011. Demographic variables, psychiatric diagnoses, and data on substance use and physical disease were obtained from the clinical records. Chi-square analyses were used to examine substance use difference in the prevalence of each physical disease category. This study found that the prevalence of co-occurring polysubstance use was 53.5%. Chi-square analyses identified that co-occurring polysubstance users reported more respiratory, digestive, musculoskeletal, and HIV/AIDS diseases but less endocrine diseases than single/no substance users. Therefore, integrated treatment programs for treating patients with co-occurring substance use and physical disease should be developed and expanded for this high-risk group.

Role of microRNAs in alcohol-induced liver disorders and non-alcoholic fatty liver disease

MicroRNAs(miRNAs) are small non-coding RNAs that regulate multiple physiological and pathological functions through the modulation of gene expression at the post-transcriptional level. Accumulating evidence has established a role for miRNAs in the development and pathogenesis of liver disease. Specifically, a large number of studies have assessed the role of miRNAsin alcoholic liver disease(ALD) and non-alcoholic fatty liver disease(NAFLD), two diseases that share common underlying mechanisms and pathological characteristics. The purpose of the current review is to summarize and update the body of literature investigating the role of miRNAs in liver disease. In addition, the potential use of miRNAs as biomarkers and/or therapeutic targets is discussed. Among all miRNAs analyzed, miR-34 a, miR-122 and miR-155 are most involved in the pathogenesis of NAFLD. Of note, these three miRNAs have also been implicated in ALD, reinforcing a common disease mechanism between these two entities and the pleiotropic effects of specific miRNAs. Currently, no single miRNA or panel of miRNAs has been identified for the detection of, or staging of ALD or NAFLD. While promising results have been shown in murine models, no therapeutic based-miRNA agents have been developed for use in humans with liver disease.

Construction and evaluation of an alcohol vapor chamber system

An increasing number of studies demonstrated that alcohol vapor chamber is an effective way to model physical signs of alcohol use disorders. Although researchers are developing different vapor chambers to study chronic alcohol exposure model worldwide, few studies build and modify their own vapor chambers in China.Here, we designed and established an alcohol vapor chamber system for small animals. We described a paradigm showing how to control and monitor alcohol concentration in whole system. The vapor chamber system with several advantages including accommodating up to ten standard mouse cages. Furthermore, the system was tested by evaluating the blood alcohol concentration and neuron injury in mice. Importantly, the alcohol withdrawal after vapor exposure caused motor coordination impairment, anxiolytic-and depression-like behavior. Finally, the Nmethyl-D-aspartate receptor(NMDAR)-mediated glutamatergic transmissions in the medial prefrontal cortex was changed after alcohol vapor exposure-induced behaviors. The frequency and amplitude of spontaneous excitatory postsynaptic currents between control and alcohol groups were not different, suggesting that alcohol exposureinduced behaviors are associated with the change in NMDAR response. Taken together, the new alcohol vapor chamber system was constructed, which would help to research the relationship between the stable alcohol exposure and withdrawal behaviors and to study chronic alcohol exposure-induced disorders in China.

Alcohol liver disease: A review of current therapeutic approaches to achieve long-term abstinence

Harmful alcohol drinking may lead to significant damage on any organ or system of the body.Alcoholic liver disease(ALD) is the most prevalent cause of advanced liver disease in Europe.In ALD,only alcohol abstinence was associated with a better long-term survival.Therefore,current effective therapeutic strategy should be oriented towards achieving alcohol abstinence or a significant reduction in alcohol consumption.Screening all primary care patients to detect those cases with alcohol abuse has been proposed as population-wide preventive intervention in primary care.It has been suggested that in patients with mild alcohol use disorder the best approach is brief intervention in the primary care setting with the ultimate goal being abstinence,whereas patients with moderate-to-severe alcohol use disorder must be referred to specialized care where detoxification and medical treatment of alcohol dependence must be undertaken.

Alcohol associated liver disease and bariatric surgery:Current perspectives and future directions

Bariatric surgery is a routinely performed procedure and is associated with a reduction in all-cause mortality in patients with obesity.However,bariatric sur-gery has also been linked to increased alcohol use with up to 30%of these patients developing alcohol use disorder(AUD).The mechanism of AUD after bariatric surgery is multifactorial and includes anatomic,metabolic,and neurohumoral changes associated with post-surgical anatomy.These patients are at increased risk of alcohol associated liver disease and,in some cases,require liver trans-plantation.In this article,we provide a scoping review of epidemiology,patho-physiology,and clinical outcomes of alcohol-related health conditions after bariatric surgery.

Alcohol use disorder and liver injury related to the COVID-19 pandemic

Alcohol use disorder is a complex and heterogeneous phenomenon that can be studied from several points of view by focusing on its different components.Alcohol is a hepatotoxin whose metabolism creates profound alterations within the hepatocyte.The liver is the central organ in the metabolism of alcohol,a process that also involves other organs and tissues such as the brain,heart and muscles,but the most relevant organ is the liver.The anatomopathological alterations in the liver associated with the prolonged use of alcohol range from the simple accumulation of neutral fats in the hepatocytes,to cirrhosis and hepatocellular carcinoma.Alcohol abuse frequently leads to liver disease such as steatosis,steatohepatitis,fibrosis,cirrhosis,and tumors.Following the spread of coronavirus disease 2019(COVID-19),there was an increase in alcohol consumption,probably linked to the months of lockdown and smart working.It is known that social isolation leads to a considerable increase in stress,and it is also recognized that high levels of stress can result in an increase in alcohol intake.Cirrhotic patients or subjects with liver cancer are immunocompromised,so they may be more exposed to COVID-19 infection with a worse prognosis.This review focuses on the fact that the COVID-19 pandemic has made the emergence of alcohol-induced liver damage a major medical and social problem.

Predictors of Co-Occurring Substance Use among Asian Americans in Residential Treatment Programs

Although severe and chronic mental disorders are common among Asian Americans in residential treatment programs, little has been known about the prevalence and predictors of co-occurring substance use in this population. The purpose of this study was to examine predictors of co-occurring substance use among Asian Americans with mental disorders in residential treatment programs. This cross-sectional study included 375 clinical records of Asian Americans from residential treatment programs between 2007 and 2011. Demographic variables, principal psychiatric diagnoses, and data on alcohol, stimulant, and marijuana use were obtained from the clinical records. Separate binary logistic regression analyses were used to examine the demographic and diagnostic contributions to the risk of each type of substance use. Findings of this study indicated that the prevalence of co-occurring substance use was about 53% in Asian Americans with mental disorders. Binary logistic regression analyses revealed that male gender, older age, and depressive disorder predicted more alcohol use, but homelessness and schizophrenia predicted less alcohol use. Male gender, homelessness, and smoking predicted more stimulant use. Male gender and younger age predicted more marijuana use. Based on the findings of this study, awareness about co-occurring substance use problems of ethnic minority psychiatric clients should be increased and appropriate substance use prevention and treatment programs should be developed and provided for high-risk groups.

Efficacy of Addiction Pharmacotherapy in Alcohol Use Disorder and Their Effects on Liver Health

Both alcohol-associated liver disease(ALD)and metabolic dysfunction-associated steatotic liver disease are leading contributors to chronic liver diseases.These conditions often coexist,exacerbating disease progression.Despite ALD being a leading cause of liver transplantation,many individuals with alcohol use disorder(AUD)do not receive treatment.In this review,we discussed the epidemiology of ALD in AUD,various treatment options for AUD,and their efficacy on liver health.Our critical analysis of current evidence underscores the need for integrated models involving multiple stakeholders to improve ALD management.

Transcranial magnetic stimulation: potential treatment for co-occurring alcohol, traumatic brain injury and posttraumatic stress disorders

Alcohol use disorder （AUD）, mild traumatic brain injury （mTBI）, and posttraumatic stress disorder （PTSD） commonly co-occur （AUD ＋ mTBI ＋ PTSD）. These conditions have overlapping symptoms which are, in part, reflective of overlapping neuropathology. These conditions become problematic because their co-occurrence can exacerbate symptoms. Therefore, treatments must be developed that are inclusive to all three conditions. Repetitive transcranial magnetic stimulation （rTMS） is non-invasive and may be an ideal treatment for co-occurring AUD ＋ mTBI ＋ PTSD. There is accumulating evidence on rTMS as a treatment for people with AUD, mTBI, and PTSD each alone. However, there are no published studies to date on rTMS as a treatment for co-occurring AUD ＋ mTBI ＋ PTSD. This review article advances the knowledge base for rTMS as a treatment for AUD ＋ mTBI ＋ PTSD. This review provides background information about these co-occurring conditions as well as rTMS. The existing literature on rTMS as a treatment for people with AUD, TBI, and PTSD each alone is reviewed. Finally, neurobiological findings in support of a theoretical model are discussed to inform TMS as a treatment for co-occurring AUD ＋ mTBI ＋ PTSD. The peer-reviewed literature was identified by targeted literature searches using PubMed and supplemented by cross-referencing the bibliographies of relevant review articles. The existing evidence on rTMS as a treatment for these conditions in isolation, coupled with the overlapping neuropathology and symptomology of these conditions, suggests that rTMS may be well suited for the treatment of these conditions together.

Diagnostic challenges in alcohol use disorder and alcoholic liver disease

Alcohol use disorders represent a heterogeneous spectrum of clinical manifestations that have been defined by the Diagnostic and Statistical Manual of Mental Disorders-5. Excessive alcohol intake can lead to damage of various organs, including the liver. Alcoholic liver disease includes different injuries ranging from steatosis to cirrhosis and implicates a diagnostic assessment of the liver disease and of its possible complications. There is growing interest in the possible different tools for assessing previous alcohol consumption and for establishing the severity of liver injury, especially by noninvasive methods.

Systematic review with meta-analysis on transplantation for alcohol-related liver disease:Very low evidence of improved outcomes

BACKGROUND Alcohol-related liver disease(ALD) is a leading cause of liver failure and indication for liver transplantation that arises in the setting of alcohol use disorder(AUD). Previous reviews of transplantation for ALD are limited in scope of outcomes and type of ALD studied. A comprehensive systematic review could improve use of transplantation in ALD and improve future research. We hypothesize that while transplanting ALD may improve mortality and relapse,findings will be limited by pre-specified causes of heterogeneity-assessment and treatment of AUD, definition of ALD, spectrum of ALD studied, assessment and rates of relapse, and study quality and bias.AIM To optimize liver transplantation for ALD, understanding existing research to guide future research, we conducted a systematic review with meta-analysis.METHODS We conducted a systematic review, comparing liver transplant to no-transplant in patients with ALD, with a primary outcome of both short-and long-term mortality and relapse. We performed a comprehensive search of MEDLINE,EMBASE, Web of Science, and The Cochrane Library databases for peer-reviewed journal articles comparing use of liver transplant in ALD to no-transplant. Two reviewers independently conducted screening, full text review, and data extraction according to the PRISMA guidelines. We report the quality of the evidence according to the GRADE criteria.RESULTS We analyzed data from 10 studies. Of 1332 participants, 34.2%(456/1332) had undergone liver transplantation, while 65.8%(876/1332) had not. While random effects meta-analysis suggested transplant in comparison to no-transplant had an association of reduced mortality that did not reach statistical significance, relative risk(RR) = 0.51(0.25-1.05), but not relapse risk, RR = 0.52(0.18-1.53), significant heterogeneity limited these findings. When restricted to prospective data,transplant compared to no-transplant significantly reduced mortality, RR = 0.25(0.13-0.46, P < 0.01), and relapse, RR = 0.25(0.14-0.45, P < 0.01), with insignificant heterogeneity but persistent small-study effects. The overall quality of the evidence was Very Low. Heterogeneity analysis suggested that AUD assessment and treatment was often not reported while ALD, relapse assessment and rate,and data collection were institutionally rather than standardly defined.CONCLUSION Systematic review of liver transplantation for ALD suggests reduced mortality and relapse in heterogeneous, institution-specific populations with inherent bias.To understand efficacy of transplanting ALD, our research approach must change.

Is It Workplace Stress a Trigger for Alcohol and Drug Abuse?

Those workers most vulnerable to pressure tend to suffer from scarce social and personal resources with which to respond adaptively to stress. In this case, the effects of psychoactive substances may exceed the stressed worker’s positive expectations. Thus, the aim is to analyze the scientific evidence on the relationship between drug abuse and workplace stress, based on an integrative review of the literature. Data were collected in February 2016 from the databases of the Virtual Health Library and PubMed. The final sample of 16 articles was divided into two categories: alcohol and drugs abuse in professions with high degree of psychosocial hazards and risks, and alcohol and drugs abuse for workplace stress in other professions. A relationship between precarious conditions, the nature of the work and its influence on drug abuse could be seen. However, other variables may strengthen psychoactive drug use as a coping strategy for stress.

Perception and Attitude of Employers towards Employees with AUD in an Emerging Economy: A Qualitative Enquiry

Background: The disease, addiction to chemical substances or drugs such as alcohol (ethanol, C2H5OH) is still not accepted as a diagnostic nosology by many in Ghana. Many consider addiction as a moral challenge, rather than a medical condition. This perception is propagated even in the Ministry of Health’s Occupational Health and Safety (OHS) policy document which punishes symptoms of substance use disorders. This study seeks to explore the perception and attitude of employers towards employees with alcohol use disorders (AUD) and to ascertain the level at which employee assistance programs (EAPs) are implemented in organizations. Methods: To infer outcomes, the study adopted the qualitative approach. In-depth interviews and observations which describe the perceived attitudes of employers (using HR managers as proxy) towards employees with AUD of some selected hospitals (private and public) in the Greater-Accra Metropolis. The interview was conducted face-to-face using an interview guide, which included open-ended questions. The structure of the guide helped the researchers to observe the participants and the conversations were also audio-taped after seeking the consent of the participants. On average, the interview lasted between 45 and 60 minutes. Results: Findings from the 10 interviews revealed that a number of factors such as biological, environmental, social and psychological accounted for AUD among employees regardless of the nature of their work. Although the HR managers had knowledge on the possible causes of AUD, some of them explained that they could not identify alcohol use in their organisations. The few that admitted to AUD at their workplace reported that alcohol use did not have any effect on their productivity and most of these workers were temporal or causal workers, hence were not perceived as permanent staff. In spite of prevalence of AUD in some hospitals, it was interesting to know that majority of these facilities had no EAPs and the few that had policies on AUD were not implementing them. Conclusions: This paper focused on some aspect of HR managers’ perceived attitude toward an aspect of their employees’ mental wellbeing which is AUD in a work setting. However, there are other pertinent issues that are crucial to employee total wellbeing that can be addressed in future research.

Predicting Alcohol Consumption in Hospitality Populations Using Sense of Coherence

This paper aims to introduce the claim that hospitality students and hospitality employees drink more alcohol than other students and employee groups and to explore and explain this alcohol consumption disparity using the sense of coherence （SOC） construct. Using a web-based questionnaire, college students were recruited, surveyed, and classified into hospitality and non-hospitality majors. Self-reported alcohol consumption, SOC, and a variety of demographic variables were measured. A total of 930 students participated of which 59.4% were female and 28% were hospitality majors. About 47% of hospitality students, 33% of other majors, 43% of women, and 38% of men were classified as at-risk consumers of alcohol. The overall SOC score was about 139 with a range of 69-191. None of the sub-populations differed significantly in SOC. While SOC does not predict major or occupational choice, SOC is a predictor of risky alcohol consumption.

Pilot Study of Problem Gambling in Specialized Substance Use Disorder Treatment—High Lifetime Prevalence of Problem Gambling in Opioid Maintenance Treatment Patients

Problem gambling is over-represented in patients treated for substance use disorders, but substance-specific prevalence of problem gambling is rarely reported. In specialized addiction treatment facilities for opioid maintenance treatment and for alcohol and prescription drug dependence, respectively, 129 patients were screened for problem gambling using the NODS-CLiP. The lifetime prevalence of problem gambling was markedly higher in opioid maintenance treatment (61 percent) than in alcohol and prescription drug dependence treatment (11 percent, p < 0.001). When controlling for gender and age, problem gambling remained significantly associated with opioid maintenance treatment. The present study demonstrated a very high prevalence of lifetime problem gambling in opioid maintenance treatment patients. This calls for active screening for problem gambling in substance use disorder patients, and mainly in treatment for opioid dependence.

酒精所致精神障碍病人复饮预测模型构建及对认知功能影响

目的:分析酒精所致精神障碍病人出院1年后复饮的影响因素并构建风险预测模型,探讨复饮和认知功能的关系。方法:选择163例酒精所致精神障碍病人为研究对象,依据出院后1年是否复饮分为复饮组和未复饮组,分析复饮的独立影响因素,检验复饮的模型拟合优度及预测效果,比较2组病人的认知功能是否存在差异,讨论复饮对认知功能的影响。结果:163例病人中1年内103例复饮,复饮率为63.19%。饮酒年限、酒精渴求度、抑郁、家庭关怀度、情绪调节度是导致复饮的独立危险因素(OR=1.110~5.882,95%CI=1.063~24.564,P<0.05),学历为独立保护因素(OR=0.311,95%CI=0.132~0.733,P<0.01)。预测模型拟合优度良好(χ2=11.82,P>0.05),ROC曲线下面积为0.966(P<0.01,95%CI=0.943~0.989),灵敏度为88.3%,特异度为96.7%,约登指数为0.850,最佳临界值为0.756,实际应用的正确率为90.2%。复饮组病人在即刻记忆、言语功能、注意功能、延迟记忆维度及认知功能总分均低于未复饮组(P<0.01)。结论:酒精所致精神障碍病人出院后复饮率偏高,临床应重视学历低、饮酒年限长、酒精渴求度强烈、抑郁情绪、家庭关怀度低及情绪调节度弱的病人,构建的风险预测模型对复饮具有良好预测作用,医护人员应通过有效干预降低复饮率而改善病人认知功能。