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Opioid antagonists block opioid receptors, a mechanism associated with utility in several therapeutic indications. Here, we review the sites of action, clinical uses, pharmacology, and general safety profiles of US Food and Drug Administration (FDA)-approved opioid antagonists. A review of the literature and product labels of opioid antagonists was conducted. The unique clinical uses of approved opioid antagonists are related to their ability to block opioid receptors centrally and/or peripherally. Centrally acting opioid antagonists treat opioid and alcohol use disorders (AUDs) and reverse opioid overdose. Because the opioid system influences weight and metabolism, one opioid antagonist combination product is approved for chronic weight management; another, approved for adults with schizophrenia or bipolar I disorder, mitigates olanzapine-associated weight gain. Peripherally acting opioid antagonists are approved for opioid-induced constipation; another accelerates gastrointestinal recovery after bowel surgery. Opioid antagonists are generally well tolerated; they are not associated with physiologic dependence or abuse. However, opioid antagonists can precipitate acute opioid withdrawal in patients using or undergoing withdrawal from opioid agonists. Likewise, their use can confer a risk for opioid overdose if attempts are made to overcome opioid antagonist blockade of opioid receptors via the intake of additional opioids. Opioid receptor antagonists have diverse therapeutic benefits based on their respective pharmacology and sites of action; understanding their respective nuances facilitates the safe and effective use of these agents.
This study provides preliminary findings on the experiences of first responders during the opioid crisis and their viewpoints regarding whether clients with opioid use disorder deserve medical rehabilitation. Understanding associations between first responder experiences and viewpoints of client deservedness can help reduce stigma, improve compassionate care, and identify training gaps.
Methods:
Analyses were run with data from a nationwide survey of Emergency Medical Services-providers and law enforcement workers collected from August to November 2022 (N = 3836). The study used univariate statistics and ordered logistic regression to understand first responders’ experiences and viewpoints on client deservedness, as well as the relationship between the two.
Results:
Results show a negative correlation between responding to overdose calls and perceiving clients with opioid use disorder as deserving of medical rehabilitation. Law enforcement, males, and conservatives also had negative viewpoints. Conversely, having a friend experience addiction and believing addiction has had a direct impact on respondents’ lives predicted increases in client deservedness.
Conclusions:
Policy should focus on creating spaces where first responders can have positive interactions with people who use drugs or are in recovery. Better training is needed to help first responders manage on-the-job stressors and understand the complexities of addiction.
Elucidation of the interaction of biological and psychosocial/environmental factors on opioid dependence (OD) risk can inform our understanding of the etiology of OD. We examined the role of psychosocial/environmental factors in moderating polygenic risk for opioid use disorder (OUD).
Methods
Data from 1958 European ancestry adults who participated in the Yale-Penn 3 study were analyzed. Polygenic risk scores (PRS) were based on a large-scale multi-trait analysis of genome-wide association studies (MTAG) of OUD.
Results
A total of 420 (21.1%) individuals had a lifetime diagnosis of OD. OUD PRS were positively associated with OD (odds ratio [OR] 1.42, 95% confidence interval [CI] 1.21–1.66). Household income and education were the strongest correlates of OD. Among individuals with higher OUD PRS, those with higher education level had lower odds of OD (OR 0.92, 95% CI 0.85–0.98); and those with posttraumatic stress disorder (PTSD) were more likely to have OD relative to those without PTSD (OR 1.56, 95% CI 1.04–2.35).
Conclusions
Results suggest an interplay between genetics and psychosocial environment in contributing to OD risk. While PRS alone do not yet have useful clinical predictive utility, psychosocial factors may help enhance prediction. These findings could inform more targeted clinical and policy interventions to help address this public health crisis.
Chronic pain has been extensively explored as a risk factor for opioid misuse, resulting in increased focus on opioid prescribing practices for individuals with such conditions. Physical disability sometimes co-occurs with chronic pain but may also represent an independent risk factor for opioid misuse. However, previous research has not disentangled whether disability contributes to risk independent of chronic pain.
Methods
Here, we estimate the independent and joint adjusted associations between having a physical disability and co-occurring chronic pain condition at time of Medicaid enrollment on subsequent 18-month risk of incident opioid use disorder (OUD) and non-fatal, unintentional opioid overdose among non-elderly, adult Medicaid beneficiaries (2016–2019).
Results
We find robust evidence that having a physical disability approximately doubles the risk of incident OUD or opioid overdose, and physical disability co-occurring with chronic pain increases the risks approximately sixfold as compared to having neither chronic pain nor disability. In absolute numbers, those with neither a physical disability nor chronic pain condition have a 1.8% adjusted risk of incident OUD over 18 months of follow-up, those with physical disability alone have an 2.9% incident risk, those with chronic pain alone have a 3.6% incident risk, and those with co-occurring physical disability and chronic pain have a 11.1% incident risk.
Conclusions
These findings suggest that those with a physical disability should receive increased attention from the medical and healthcare communities to reduce their risk of opioid misuse and attendant negative outcomes.
While biology does play a significant role in the development of addiction, it is the environment in which we grow and develop as children and ultimately exist as adults that determines whether or not an at-risk individual will subsequently develop opioid use disorder. Race (the outward manifestation of genetics) ethnicity (cultural factors such as nationality, regional culture, ancestry, and language), religion, gender, access to economic resources, and geography all influence risk to varying degrees. Within each community different cultures have different levels of propensity for developing opioid use disorder, and, in areas where there is more mixing of different races and cultures, a person’s risk for developing opioid addiction more closely reflects the risk of the community at large and not the genetic risk of the individual. In the past, social factors such as access to economic resources and peer or family support were thought to be somewhat protective and that a biologically at-risk individual in this setting would be less likely to develop opioid use disorder, but this has not turned out to be the case.
Opioid use disorder is currently viewed as a chronic disease characterized by specific drug-seeking behaviors and compulsive use patterns. In general, these behaviors are difficult to control, and occur despite harmful consequences to the user, but not every person who is exposed to an opioid becomes addicted. The disease of addiction is complex and multifactorial and, as of this writing, a single factor has not been identified that can either accurately predict or quantify the risk that a given individual will develop opioid use disorder. Like most diseases, there is a combination of factors at play, which can influence the risk for addiction. The more risk factors a person has, the greater the chance that exposure to opioids will lead to addiction. Conversely, the fewer risk factors an individual has, the less likely that exposure will result in opioid use disorder. Specific risk factors discussed in this chapter include biological (genetic predisposition), environmental (exposure during critical points in development) and social factors such as accepted use within certain communities and variable access to medical care for members of different socioeconomic status.
Opioid use disorder (OUD) and cancer gained attention as co-occurring diseases in the last 2 decades due to the possible relationship between opioid prescriptions for cancer pain and the risk of developing substance use disorder in cancer patients. However, little is known about patients previously diagnosed with OUD who develop cancer and how to manage both OUD symptoms and control pain.
Methods
The present case series deals with this subpopulation and proposes a dose escalation of methadone to control both the cancer-related pain and drug addiction symptoms.
Results
This approach is peculiar because methadone is not used as a first-line treatment in cancer pain management and is not often used as a second-line treatment as well. Our 4 patients experienced good clinical control of symptoms and no major adverse reactions.
Significance of results
The subgroup of patients with OUD who develop cancer could be the perfect population to reconsider the use of methadone as a first-line treatment for cancer pain. Prospective studies are needed to evaluate the efficacy and safety of increasing doses of methadone in these patients to validate our clinical approach.
Choosing an appropriate electronic data capture system (EDC) is a critical decision for all randomized controlled trials (RCT). In this paper, we document our process for developing and implementing an EDC for a multisite RCT evaluating the efficacy and implementation of an enhanced primary care model for individuals with opioid use disorder who are returning to the community from incarceration.
Methods:
Informed by the Knowledge-to-Action conceptual framework and user-centered design principles, we used Claris Filemaker software to design and implement CRICIT, a novel EDC that could meet the varied needs of the many stakeholders involved in our study.
Results:
CRICIT was deployed in May 2021 and has been continuously iterated and adapted since. CRICIT’s features include extensive participant tracking capabilities, site-specific adaptability, integrated randomization protocols, and the ability to generate both site-specific and study-wide summary reports.
Conclusions:
CRICIT is highly customizable, adaptable, and secure. Its implementation has enhanced the quality of the study’s data, increased fidelity to a complicated research protocol, and reduced research staff’s administrative burden. CRICIT and similar systems have the potential to streamline research activities and contribute to the efficient collection and utilization of clinical research data.
The opioid crisis continues to affect many areas worldwide, raising questions regarding prescribing indications. There is no consensus on negotiating the need for pain relief and the potential for medically prescribed opioid-related harm/addiction. These issues present an enormous educational challenge to physicians in training, particularly those whose mandate is to understand and respond to varying forms of pain. This article examines the perspectives and educational challenges faced by two psychiatry residents from different parts of the globe during the crisis. Is the educational experience of future psychiatrists sufficient to prepare them for the responsibilities that lie ahead?
Chapter 3 focuses specifically on research findings for how obesity, opioid use disorder, and depression in older adults are impacted and shaped by the four socials. The wide range of research contexts and methods are highlighted to provide a clear understanding of the scope of work in these areas.
Describes the categories of psychoactive drugs. Describes the effects of psychoactive drugs on the nervous system. Identifies diagnostic symptoms associated with intoxication, withdrawal, and substance use disorders. Lists the various models and treatments for substance use disorders.
We need to better understand the frequency and predictors of opioid use disorder (OUD) after first opioid prescription (OP).
Methods
We followed 1 516 392 individuals from the Swedish population born 1980–2000, from 1 July 2007, until 31 Dec 2017. We examined putative risk predictors with univariable and multivariable Cox Models and the potential causal effects of predictors by propensity score and co-sibling analyses.
Result
Of the individuals in our cohort, 24.8% (375 404) received a first OP, of whom 3034 (0.90%) developed a subsequent first OUD. The hazard ratio (HR) (± 95% CIs) for OUD after OP equaled 7.10 (6.75–7.46), with a mean time to onset of 3.41 (2.39) years. The strongest putative risk factors for development of OUD after OP were prior psychiatric and substance use disorders, criminal behavior, parental divorce/death, poor school performance, current community deprivation, divorce, and male sex. Few predictors differed across sexes. OP renewal was associated with a HR of 3.66 (3.41–3.93) for OUD. Co-sibling and propensity score analyses suggested that at least a moderate proportion of the risk factor-OUD association was likely causal. A risk score to predict OUD after OP had an AUC of 0.85, where nearly 60% of cases scoring in the top decile.
Conclusions
In a general population sample, an OP represents a substantial risk factor for subsequent OUD. Many of the risk factors for OUD after OP can be readily assessed at the time of potential OP, permitting clinicians to evaluate the risk of iatrogenic OUD.
Body Dysmorphic Disorder (BDD) is a severe and common disorder that consists of distressing or impairing preoccupation with nonexistent or slight flaws in one’s physical appearance. People with BDD typically describe themselves as looking ugly, unattractive, deformed, or abnormal, whereas in reality they look normal or even very attractive.
Objectives
Case Study
Methods
Case Study
Results
Mr. X is a 31 year-old male with history of Opiate (heroin, oxycodone) use disorder currently on maintenance (Buprenorphine-Naloxone) treatment. On admission, urine toxicology was positive for opiates and other drugs.CIWA score was 11. He was started on Lorazepam taper, Mirtazapine, Fluoxetine, and was started on Suboxone soon after. His cravings decreased and he was admitted for Rehab. He reports that anxiety associated with his “body image” related to ears, shape of head, eyebrows since he was in high school which made him “feel uncomfortable” going to school and concentrating in his classes. His coping mechanism was covering his head with hats, shaving eyebrows, substance use, and receiving an otoplasty.
Conclusions
According to Houchins et al (2019), alcohol is the predominant substance used in BDD. It is interesting to note that only 6% of BDD patients had Opioid Use Disorder, but as this case demonstrates, can be a debilitating comorbidity that raises the risk for suicidality or hospitalization. However, little research has been done on the treatment of OUDs in patients with BDD or on the treatment of BDD in patients with an SUD, and this is an area of research that could benefit the modern population greatly.
Justice system-involved women with opioid use disorder (OUD) experience layered health risks and stigma, yet peer navigation services during reentry may support positive outcomes. This manuscript offers a program description of a women’s peer navigation intervention delivered pre- and post-release from jail to remove barriers to women’s access to OUD treatment, including medications for opioid use disorder (MOUD).
Methods:
All data were collected as part of a NIH/NIDA-funded national cooperative, the Justice Community Opioid Innovation Network (JCOIN) project. Through the larger study’s intervention, women in jail with OUD are connected via videoconference to a peer navigator, who provides an initial reentry recovery assessment and 12+ weeks of recovery support sessions post-release. Qualitative analyses examined peers’ notes from initial sessions with women (N = 50) and in-depth interviews with peers (N = 3).
Results:
Peers’ notes from initial sessions suggest that women anticipate challenges to successful recovery and community reentry. More than half of women (51.9%) chose OUD treatment as their primary goal, while others selected more basic needs (e.g. housing, transportation). In qualitative interviews, peers described women’s transitions to the community as unpredictable, creating difficulties for reentry planning, particularly for rural women. Peers also described challenges with stigma against MOUD and establishing relationships via telehealth, but ultimately believed their role was valuable in providing resource referrals, support, and hope for recovery.
Conclusions:
For women with OUD, peer navigation can offer critical linkages to services at release from jail, in addition to hope, encouragement, and solidarity. Findings provide important insights for future peer-based interventions.
Alcohol use disorder and other substance use disorders are a growing, yet under recognized, health problem in older adults. Generally, screening tests and diagnostic examinations for these disorders are geared toward a younger population. There is a growing body of literature, however, that specifically addresses screening, diagnosis, and treatment substance use disorders in older adults. Several treatment strategies and medications are being used successfully to treat this older population. Physicians and other health-care providers must remain diligent in considering a diagnosis of substance use disorder in all their patients, regardless of age, gender, socioeconomic status, and comorbid conditions.
Neuropsychopharmacologic effects of long-term opioid therapy (LTOT) in the context of chronic pain may result in subjective anhedonia coupled with decreased attention to natural rewards. Yet, there are no known efficacious treatments for anhedonia and reward deficits associated with chronic opioid use. Mindfulness-Oriented Recovery Enhancement (MORE), a novel behavioral intervention combining training in mindfulness with savoring of natural rewards, may hold promise for treating anhedonia in LTOT.
Methods
Veterans receiving LTOT (N = 63) for chronic pain were randomized to 8 weeks of MORE or a supportive group (SG) psychotherapy control. Before and after the 8-week treatment groups, we assessed the effects of MORE on the late positive potential (LPP) of the electroencephalogram and skin conductance level (SCL) during viewing and up-regulating responses (i.e. savoring) to natural reward cues. We then examined whether these neurophysiological effects were associated with reductions in subjective anhedonia by 4-month follow-up.
Results
Patients treated with MORE demonstrated significantly increased LPP and SCL to natural reward cues and greater decreases in subjective anhedonia relative to those in the SG. The effect of MORE on reducing anhedonia was statistically mediated by increases in LPP response during savoring.
Conclusions
MORE enhances motivated attention to natural reward cues among chronic pain patients on LTOT, as evidenced by increased electrocortical and sympathetic nervous system responses. Given neurophysiological evidence of clinical target engagement, MORE may be an efficacious treatment for anhedonia among chronic opioid users, people with chronic pain, and those at risk for opioid use disorder.
During the COVID-19 pandemic, access to addiction treatment has plummeted. At the same time, patients with opioid use disorder are at higher risk of COVID-19 infection and experience worse outcomes. The Baltimore Convention Center Field Hospital (BCCFH), a state-run COVID-19 disaster hospital operated by Johns Hopkins Medicine and the University of Maryland Medical System, continues to operate 14 months into the pandemic to serve as an overflow unit for the state’s hospitals. BCCFH staff observed the demand for opioid use disorder care and developed admission criteria, a pharmacy formulary, and case management procedures to meet this need. This article describes generalized lessons from the BCCFH experience treating substance use disorder during a pandemic.
Goffman defined stigma as an “attribute that is deeply discrediting” and in the last two decades research on this subject grew substantially.Opioids were ranked as the second most common form of illicit drug used worldwide and there is consensus in the literature that opioid substitution therapy (OST), methadone or buprenorphine, are the most effective treatments, although remain underutilized. People with an history of substance use disorders (SUD) are widely stigmatized, a significant barrier to detection and treatment efforts. Care workers were cited as the second most common source of stigma.
Objectives
The aim is to do a review of the literature of stigma as a significant barrier to OST and present several potential strategies to reduce stigma.
Methods
Non-systematic review of the literature with selection of scientific articles published in the last 5 years; by searching the Pubmed and Medscape databases using the combination of MeSH descriptors. The following MeSH terms were used: Opioid Use Disorder; Stigma; Opioid Substitution Therapy
Results
OST providers should actively bring up the topic of stigma in clinic appointments to determine whether the patient is experiencing stigma, and if so, whether it is adversely affecting their ability to continue in the treatment. More active measures need to be taken to help reducing the stigma through public awareness campaigns at local levels, continuing education of health care providers regarding substance OST, and greater incorporation of family members into the program.
Conclusions
In conclusion, further research is required to understand and address this issue.
Exposure to traumatic events is both a risk factor for substance use and an adverse outcome of substance use disorders. Identifying and managing post-traumatic stress disorder (PTSD) in patients with addiction requires attention.
Aims
To examine the lifetime prevalence of traumatic events and past-month prevalence of PSTD in patients treated for opioid use disorder, and explore the association between trauma, PTSD and treatment outcomes.
Method
Participants (n = 674) receiving methadone treatment in 20 community clinics across Ontario, Canada, were administered the Mini-International Neuropsychiatric Interview to identify self-reported traumatic events and PTSD. Drug use was measured for 12 months by urine drug screens.
Results
Eleven per cent of participants met past-month criteria for PTSD (n = 72), and 48% reported history of traumatic events with no current PTSD (n = 323). Participants with PTSD were more likely to be female (odds ratio 2.13, 95% CI 1.20–3.76) and less likely to be employed (odds ratio 0.31, 95% CI 0.16–0.61) or married (odds ratio 0.51, 95% CI 0.26–0.90) than those with no trauma history. Antidepressants (39 v. 24%) and benzodiazepines (36 v. 18%) were differentially prescribed to patients with and without PTSD. Length of time in treatment and opioid use were not associated with trauma; however, suicidal ideation was more common in PTSD (odds ratio 2.29, 95% CI 1.04–5.01).
Conclusions
Trauma and PTSD are prevalent among patients with opioid use disorder, and consideration of trauma symptoms and associated characteristics is warranted. Patients with and without comorbid PTSD differ clinically and psychosocially, highlighting the relevance of integrating addiction and mental health services for this population.
Deaths due to opioid overdose have reached unprecedented levels in Canada; over 12,800 opioid-related deaths occurred between January 2016 and March 2019, and overdose death rates increased by approximately 50% from 2016 to 2018.1 In 2016, Health Canada declared the opioid epidemic a national public health crisis,2 and life expectancy increases have halted in Canada for the first time in decades.3 Children are not exempt from this crisis, and the Chief Public Health Officer of Canada has recently prioritized the prevention of problematic substance use among Canadian youth.4