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RATIONALE: Recent reports have shown increased cannabis use among women, leading to growing concerns about cannabis use disorder (CUD). While there is preclinical evidence suggesting biological sex influences cannabinoid effects, human research remains scant. We investigated sex differences in the acute response to oral tetrahydrocannabinol (THC) in humans. METHODS: 56 healthy men and women with prior exposure to cannabis but no history of CUD participated in a randomized, placebo-controlled, human laboratory study where they received a single 10 mg dose of oral THC (dronabinol). Subjective psychoactive effects were assessed by the visual analog scale of "high", psychotomimetic effects by the Clinician-Administered Dissociative Symptoms Scale and Psychotomimetic States Inventory, verbal learning and memory by Rey Auditory Verbal Learning Test (RAVLT), and physiological effects by heart rate. Outcomes were regularly measured on the test day, except for the RAVLT, which was assessed once. Peak differences from baseline were analyzed using a nonparametric method for repeated measures. RESULTS: Oral THC (10 mg) demonstrated significant dose-related effects in psychotomimetic and physiological domains, but not in RAVLT outcomes. A notable interaction between THC dose and sex emerged concerning the subjective "high" scores, with women reporting heightened sensations (p = 0.05). No other significant effects of sex and THC dose interaction were observed. CONCLUSION: Oral THC (10 mg) yields similar acute psychotomimetic and physiological effects across sexes, but women may experience a pronounced subjective psychoactive effect. Further research is needed to identify individual vulnerabilities and facilitate tailored interventions addressing CUD. CLINICALTRIALS: GOV REGISTRATION: https://clinicaltrials.gov/study/NCT02781519?term=Ranganathan&intr=THC&rank=3 .
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BACKGROUND AND AMS: Despite the evident public health impact, the extent and patterns of alcohol use in the Eastern Mediterranean countries remain understudied. The latest estimation for the last 12-month use of alcohol in the region was 2.9% in 2016 by the World Health Organization. We reviewed the main indicators for alcohol consumption in the region since 2010. METHODS: We systematically searched on-line databases until September 2023, together with other global and regional sources for studies on the adult general population (aged ≥ 15 years) and young general populations (aged < 18 years) and studies on the treatment-seeking individuals with substance use in Eastern Mediterranean countries. Studies were included from 22 countries: Afghanistan, Bahrain, Djibouti, Egypt, Iran, Iraq, Jordan, Kuwait, Lebanon, Libya, Morocco, Oman, Pakistan, Palestine, Qatar, Saudi Arabia, Somalia, Sudan, Syria, Tunisia, United Arab Emirates and Yemen. RESULTS: A total of 148 were included (n = 95 on the prevalence of alcohol use, n = 46 on the prevalence of alcohol use disorder, regular use and heavy episodic drinking, n = 35 on alcohol use pattern among people who use substances and one report on alcohol per capita consumption, n = 29 had data for more than one category). The pooled prevalence of the last 12-month alcohol use in the adult general population was 9.5% [95% confidence interval (CI) = 6.4-13.7] among males, 2.8% (95% CI = 1.3-5.5\) among females and 6.2% (95% CI = 3.9-9.6) in both sexes in the region, with notable subregional variations. Data on the prevalence of alcohol use disorder and heavy drinking were limited to several countries, with heterogeneous indicators. The pooled estimate of alcohol as the primary substance of use among treatment-seeking people who used substances was 16.9% (95% CI = 8.8-26.9). CONCLUSIONS: More than 30 million adults in the Eastern Mediterranean region used alcohol in the last 12 months, with a prevalence of 6.2%. This is far fewer than the global estimate of 43% of the population aged 15 years and above, but is approximately two times more than the previous estimate (2.9%), reported by the World Health Organization in 2016, which might show an increasing trend.
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Consumo de Bebidas Alcoólicas , Alcoolismo , Adolescente , Adulto , Feminino , Humanos , Masculino , Adulto Jovem , Consumo de Bebidas Alcoólicas/epidemiologia , Alcoolismo/epidemiologia , Consumo Excessivo de Bebidas Alcoólicas/epidemiologia , Oriente Médio/epidemiologia , Prevalência , África do Norte/epidemiologia , Paquistão/epidemiologia , Afeganistão/epidemiologiaRESUMO
Background: Frequent cannabis use is associated with adverse health-related outcomes. This study followed up individuals who used cannabis to assess their use and adverse event status. Methods: The eligible individuals, recruited in the Iranian Mental Health Survey (IranMHS), were contacted via telephone calls six years after the index interview. The frequency of cannabis use and the occurrence of selected adverse events were recorded. The baseline status was extracted from the index survey. If any individual was inaccessible, his/her vital status was assessed. Findings: Of the 50 eligible individuals (all male), two had died. Moreover, from among 25 reached participants, 19 reported abstinence from cannabis in the past year, and 18 reported at least one adverse event in the past six years. Violence and imprisonment were the most common events reported. Conclusion: Six years after the index interview, most of the participants abstained from cannabis. Besides, adverse events were common, emphasizing the need for further investigations on larger samples of cannabis users.
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BACKGROUND: One in four families has at least one member with a mental disorder and families are the main caregivers in most patients in low and middle-income countries. Caregivers experience disruption in their routine lives, increased responsibilities, increased need for support, and changes in their network. The role of personal support networks in the health and burden of the caregivers is complex and depends on the context, cultural and socioeconomical variables. In this study, we aimed to investigate the personal support network of caregivers of patients with severe mental illness in Iran. METHODS: By using a mixed-methods design, we focused on the structure and composition of caregiver networks, as well as self-perceived caregiver support. RESULTS: We found that the support network of caregivers was mostly composed of immediate family members whom themselves were selectively chosen as a result of the multidimensional process of interaction between stigma, availability, and the perceived needs of caregivers. The participants mentioned economic and instrumental supports more frequently than emotional support, probably reflecting their unmet basic needs. Advocacy for providing formal systemic supports to caregivers, as well as interventions that expand caregivers personal support network is recommended. CONCLUSIONS: Most participants of the study were relatively isolated and had a small network of support, mostly composed of immediate family members. Stigma was a serious source of family distress for caregivers and a limiting factor in social relationships.
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Cuidadores , Transtornos Mentais , Humanos , Cuidadores/psicologia , Adaptação Psicológica , Solidão , Transtornos Mentais/terapia , Transtornos Mentais/psicologia , Família/psicologia , Rede Social , Apoio SocialRESUMO
Rates of opioid-related deaths and overdoses in the United States are at record-high levels. Thus, novel neurobiological targets for the treatment of OUD are greatly needed. Given the close interaction between the endogenous opioid system and the endocannabinoid system (ECS), targeting the ECS may have therapeutic potential in OUD. The various components of the ECS, including cannabinoid receptors, their lipid-derived endogenous ligands (endocannabinoids [eCBs]), and the related enzymes, present potential targets for developing new medications in OUD treatment. The purpose of this paper is to review the clinical and preclinical literature on the dysregulation of the ECS after exposure to opioids. We review the evidence of ECS dysregulation across various study types, exposure protocols, and measurement protocols and summarize the evidence for dysregulation of ECS components at specific brain regions. Preclinical research has shown that opioids disrupt various ECS components that are region-specific. However, the results in the literature are highly heterogenous and sometimes contradictory, possibly due to variety of different methods used. Further research is needed before a confident conclusion could be made on how exposure to opioids can affect ECS components in various brain regions.