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Narayan AJ, Downey LA, Manning B, Hayley AC. Cannabinoid treatments for anxiety: A systematic review and consideration of the impact of sleep disturbance. Neurosci Biobehav Rev 2022. [DOI: https:/doi.org.ezproxy.mnsu.edu/10.1016/j.neubiorev.2022.104941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/01/2023]
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Velzeboer R, Malas A, Boerkoel P, Cullen K, Hawkins M, Roesler J, Lai WWK. Cannabis dosing and administration for sleep: a systematic review. Sleep 2022; 45:6701617. [PMID: 36107800 DOI: 10.1093/sleep/zsac218] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 09/01/2022] [Indexed: 01/31/2023] Open
Abstract
STUDY OBJECTIVES As cannabis is increasingly used to treat sleep disorders, we performed a systematic review to examine the effects of cannabis on sleep and to guide cannabis prescribers in their recommendations to patients, specifically focusing on dosing. METHODS We searched EMBASE, Medline, and Web of Science and identified 4550 studies for screening. Five hundred sixty-eight studies were selected for full-text review and 31 were included for analysis. Study results were considered positive based on improvements in sleep architecture or subjective sleep quality. Bias in randomized controlled trials was assessed using Cochrane Risk of Bias tool 2.0. RESULTS Sleep improvements were seen in 7 out of 19 randomized studies and in 7 out of 12 uncontrolled trials. There were no significant differences between the effects of tetrahydrocannabinol and cannabidiol. Cannabis showed most promise at improving sleep in patients with pain-related disorders, as compared to those with neurologic, psychiatric, or sleep disorders, and showed no significant effects on healthy participants' sleep. While subjective improvements in sleep quality were often observed, diagnostic testing showed no improvements in sleep architecture. Adverse events included headaches, sedation, and dizziness, and occurred more frequently at higher doses, though no serious adverse events were observed. CONCLUSION High-quality evidence to support cannabis use for sleep remains limited. Heterogeneity in cannabis types, doses, timing of administration, and sleep outcome measures limit the ability to make specific dosing recommendations.
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Affiliation(s)
- Rob Velzeboer
- Clinical Research, Tranq Sleep Care , Kelowna, British Columbia, Canada
| | - Adeeb Malas
- Department of Psychiatry, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Pierre Boerkoel
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Katie Cullen
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Michelle Hawkins
- Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jordanna Roesler
- Department of Dermatology, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Wayne Wei-Ku Lai
- Medical Director, Tranq Sleep Care, Kelowna, British Columbia, Canada.,Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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DiGuiseppi GT, Fedorova EV, Lankenau SE, Davis JP, Wong CF. Egocentric Network Characteristics and Cannabis Use in a Sample of Young Adult Medical Cannabis Patients and Nonpatient Users. J Stud Alcohol Drugs 2022; 83:802-811. [PMID: 36484577 PMCID: PMC9756408 DOI: 10.15288/jsad.21-00286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 05/13/2022] [Indexed: 01/14/2023] Open
Abstract
OBJECTIVE Social factors play an important role in young adults' substance use behaviors, but little is known about how egocentric social network factors are related to young adults' cannabis use. Young adults also report medicinal and recreational uses of cannabis, which may alter the strength of these relationships. Therefore, medical cannabis patient status and medicinal/recreational orientation toward cannabis were examined as moderators of these relationships. METHOD Young adult medical cannabis patients (n = 182) and nonpatient users (n = 157) were surveyed in Los Angeles in 2015-2016 about their cannabis use, orientation (medicinal and/or recreational), and egocentric networks (cannabis use network size, social support network size, descriptive and injunctive norms). Regression models examined associations between network characteristics and past-90-day use and problematic use, and tested interactions between network characteristics and both patient status and cannabis use orientation. RESULTS Only descriptive norms (adjusted incidence rate ratio [aIRR] = 1.19, 95% confidence interval [CI] [1.06, 1.33]) were associated with more frequent use, but not problematic use. Descriptive norms interacted with cannabis use orientation: descriptive norms were positively associated with cannabis use days among medicinally oriented users (aIRR = 1.22, 95% CI [1.02, 1.46]). However, this relationship was stronger for recreationally oriented users (aIRR = 1.62, 95% CI [1.31, 2.01]). No interactions were found predicting problematic use. CONCLUSIONS Descriptive cannabis use norms among one's personal network members are an important variable predicting young adults' cannabis use, but not problematic use. Perceived descriptive norms may be a stronger motivator to use for recreational users than medicinal users.
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Affiliation(s)
- Graham T. DiGuiseppi
- Suzanne Dworak-Peck School of Social Work, University of Southern California, Los Angeles, California
| | - Ekaterina V. Fedorova
- Department of Community Health and Prevention, Dornsife School of Public Health, Drexel University, Philadelphia, Pennsylvania
| | - Stephen E. Lankenau
- Department of Community Health and Prevention, Dornsife School of Public Health, Drexel University, Philadelphia, Pennsylvania
| | - Jordan P. Davis
- Suzanne Dworak-Peck School of Social Work, University of Southern California, Los Angeles, California
| | - Carolyn F. Wong
- Division of Adolescent and Young Adult Medicine, Children's Hospital Los Angeles, Los Angeles, California
- Department of Pediatrics, Keck School of Medicine, University of Southern California, Los Angeles, California
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Chung AKK, Tse CY, Law JKC. Attitudes and beliefs of medical students on cannabis in Hong Kong. Complement Ther Med 2022; 70:102870. [PMID: 35952958 DOI: 10.1016/j.ctim.2022.102870] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 07/17/2022] [Accepted: 08/07/2022] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND To assess Hong Kong medical students' knowledge, attitudes and beliefs on cannabis and its future legal reform. METHODS A cross-sectional anonymous online survey were sent from 1st December 2018 to 31st August 2020 to all medical students from the Li Ka Shing Faculty of Medicine, the University of Hong Kong (HKU). RESULTS 187 students (13.6 %) responded the survey. Overall, students perceived cannabis possessed significant physical and mental health risks, but they were more neutral to its physical and mental benefits. They also supported legalizing cannabis more so for medical use than recreational use. Females perceived higher risks than males. Those who used cannabis before were more acceptable to recommend cannabis as medical treatments, perceived cannabis use with greater benefits and less risks, and were more likely to support legal reform for cannabis in Hong Kong than their counterparts. Students were also more likely to recommend medical cannabis than non-licensed cannabis to patients if they were legally available. CONCLUSION Medical students in Hong Kong supported legalization of cannabis for medical use despite perceiving significant risks from cannabis use. Future research should investigate public acceptance on medical cannabis in Hong Kong and other Asian countries.
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Affiliation(s)
- Albert Kar-Kin Chung
- Department of Psychiatry, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region.
| | - Cheuk-Yin Tse
- Department of Psychiatry, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
| | - Johnson Kai-Chun Law
- Department of Psychiatry, School of Clinical Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong Special Administrative Region
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Kimless D, Caloura M, Markos V, Ryan J, Abbonizio S, Janicki S. An Observational Cross-Sectional Survey Exploring the Indications for and Responses to Medical Marijuana Use in Certified Patients in Pennsylvania. J Prim Care Community Health 2022; 13:21501319221129734. [PMID: 36226444 PMCID: PMC9561639 DOI: 10.1177/21501319221129734] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION/OBJECTIVES Medical cannabis programs across the country vary and differ in their qualifying conditions for medical cannabis use. This has led to a gap in knowledge regarding the specific needs of cannabis patients, including the most common reason patients seek medical cannabis. The purpose of this study was to examine the current needs of medical cannabis patients in order to better inform future research, and to evaluate potential needs in policy changes in states with more restrictive qualifying conditions for medical cannabis use. METHODS A cross-sectional survey study was administered (n = 207) at a Laurel Harvest Labs dispensary in Pennsylvania. Participants were qualified medical cannabis users and were recruited as a convenience sample when entering the dispensary. The survey asked questions regarding participant demographics, medical cannabis qualifying conditions, usage, methods of administration, adverse effects, tolerance, and impact of medical cannabis on medication, alcohol, and tobacco use. Chi-squared or Fisher's exact tests were conducted for analyses involving categorical data. RESULTS The mean age of respondents was 36.7 years (SD = 12.8), and the majority were male (61.4%) and white (84.7%). Respondents self-reported that anxiety disorder was the most common qualifying medical condition and the most common comorbid condition (50.1%; 69.3%) for medical cannabis use. Additionally, approximately 95% of users reported having no adverse effects from using medical cannabis, and 90% of users preferred inhalation through vaporization as the preferred method of consumption. More than 50% of participants reported an improvement in their symptoms where only 20% of users reported being tolerant to their current dose. More than 70% of respondents reported that obtaining medical cannabis was "easy" and 54% of users reported that the cost of medical cannabis was not a barrier to access. CONCLUSIONS Anxiety disorder is a prevalent condition for which medical cannabis is used; however, many states do not recognize anxiety disorder as a qualifying condition for medical cannabis. Further research on medical cannabis use for anxiety disorders is needed to evaluate proper dosing and responses to treatment.
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Affiliation(s)
| | - Matthew Caloura
- Laurel Harvest Labs, Lancaster, PA,
USA,Matthew Caloura, Laurel Harvest Labs, 119 S
Tree Drive, Lancaster, PA 17601, USA.
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Russo EB, Cuttler C, Cooper ZD, Stueber A, Whiteley VL, Sexton M. Survey of Patients Employing Cannabigerol-Predominant Cannabis Preparations: Perceived Medical Effects, Adverse Events, and Withdrawal Symptoms. Cannabis Cannabinoid Res 2022; 7:706-716. [PMID: 34569849 PMCID: PMC9587780 DOI: 10.1089/can.2021.0058] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Introduction: Cannabigerol (CBG), and its precursor before decarboxylation, cannabigerolic acid is sometimes labeled the "mother of all cannabinoids." The purpose of the present study was to investigate reasons for use and self-reported therapeutic effects in CBG-predominant cannabis users. Usage patterns and adverse effects, including withdrawal symptoms were also explored. Methods: Cannabidiol-predominant cannabis users were recruited online to complete an online survey assessing CBG use patterns, conditions treated with CBG-predominant cannabis (containing >50% CBG), perceived efficacy, associated adverse events, and withdrawal symptoms. One hundred twenty-seven eligible participants (U.S. residents ages 21+ who reported using CBG-predominant cannabis in the past 6 months) completed the survey. Results: Most of the samples (n=65; 51.2%) reported use of CBG-predominant products solely for medical purposes (n=46; 36.2% reported use for medical and recreational purposes; n=8; 6.3% reported recreational use only, and n=8 were missing). The most common conditions the complete sample reported using CBG to treat were anxiety (51.2%), chronic pain (40.9%), depression (33.1%), and insomnia/disturbed sleep (30.7%). Efficacy was highly rated, with the majority reporting their conditions were "very much improved" or "much improved" by CBG. Furthermore, 73.9% claimed superiority of CBG-predominant cannabis over conventional medicines for chronic pain, 80% for depression, 73% for insomnia, and 78.3% for anxiety. Forty-four percent of CBG-predominant cannabis users reported no adverse events, with 16.5% noting dry mouth, 15% sleepiness, 11.8% increased appetite, and 8.7% dry eyes. Around 84.3% reported no withdrawal symptoms, with sleep difficulties representing the most frequently endorsed withdrawal symptom (endorsed by two respondents). Conclusions: This is the first patient survey of CBG-predominant cannabis use to date, and the first to document self-reported efficacy of CBG-predominant products, particularly for anxiety, chronic pain, depression, and insomnia. Most respondents reported greater efficacy of CBG-predominant cannabis over conventional pharmacotherapy, with a benign adverse event profile and negligible withdrawal symptoms. This study establishes that humans are employing CBG and suggests that CBG-predominant cannabis-based medicines should be studied in randomized controlled trials.
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Affiliation(s)
| | | | - Ziva D. Cooper
- University of California, Los Angeles, Los Angeles, California, USA
| | | | | | - Michelle Sexton
- University of California, San Diego, San Diego, California, USA
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Kudrich C, Hurd YL, Salsitz E, Wang AL. Adjunctive Management of Opioid Withdrawal with the Nonopioid Medication Cannabidiol. Cannabis Cannabinoid Res 2022; 7:569-581. [PMID: 34678050 PMCID: PMC9587789 DOI: 10.1089/can.2021.0089] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Introduction: Opioid use disorder (OUD) is a major public health crisis worldwide. Patients with OUD inevitably experience withdrawal symptoms when they attempt to taper down on their current opioid use, abstain completely from opioids, or attempt to transition to certain medications for opioid use disorder. Acute opioid withdrawal can be debilitating and include a range of symptoms such as anxiety, pain, insomnia, and gastrointestinal symptoms. Whereas acute opioid withdrawal only lasts for 1-2 weeks, protracted withdrawal symptoms can persist for months after the cessation of opioids. Insufficient management of opioid withdrawal often leads to devastating results including treatment failure, relapse, and overdose. Thus, there is a critical need for cost-effective, nonopioid medications, with minimal side effects to help in the medical management of opioid withdrawal syndrome. We discuss the potential consideration of cannabidiol (CBD), a nonintoxicating component of the cannabis plant, as an adjunctive treatment in managing the opioid withdrawal syndrome. Materials and Methods: A review of the literature was performed using keywords related to CBD and opioid withdrawal syndrome in PubMed and Google Scholar. A total of 144 abstracts were identified, and 41 articles were selected where CBD had been evaluated in clinical studies relevant to opioid withdrawal. Results: CBD has been reported to have several therapeutic properties including anxiolytic, antidepressant, anti-inflammatory, anti-emetic, analgesic, as well as reduction of cue-induced craving for opioids, all of which are highly relevant to opioid withdrawal syndrome. In addition, CBD has been shown in several clinical trials to be a well-tolerated with no significant adverse effects, even when co-administered with a potent opioid agonist. Conclusions: Growing evidence suggests that CBD could potentially be added to the standard opioid detoxification regimen to mitigate acute or protracted opioid withdrawal-related symptoms. However, most existing findings are either based on preclinical studies and/or small clinical trials. Well-designed, prospective, randomized-controlled studies evaluating the effect of CBD on managing opioid withdrawal symptoms are warranted.
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Affiliation(s)
- Christopher Kudrich
- Department of Psychiatry, Addiction Institute of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Mount Sinai Beth Israel Hospital, New York, New York, USA
| | - Yasmin L. Hurd
- Department of Psychiatry, Addiction Institute of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Edwin Salsitz
- Department of Psychiatry, Addiction Institute of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
- Mount Sinai Beth Israel Hospital, New York, New York, USA
| | - An-Li Wang
- Department of Psychiatry, Addiction Institute of Mount Sinai, Icahn School of Medicine at Mount Sinai, New York, New York, USA
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Benatti B, Vismara M, Casati L, Vanzetto S, Conti D, Cirnigliaro G, Varinelli A, Di Bartolomeo M, D'addario C, Van Ameringen M, Dell'Osso B. Cannabis use and related clinical variables in patients with obsessive-compulsive disorder. CNS Spectr 2022; 28:1-9. [PMID: 36148826 DOI: 10.1017/s1092852922001006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Limited studies have investigated cannabis use in patients with obsessive-compulsive disorder (OCD), despite its widespread use by patients with psychiatric illnesses. The aim of this study was to assess the frequency, correlates, and clinical impact of cannabis use in an Italian sample of patients with OCD. METHODS Seventy consecutive outpatients with OCD were recruited from a tertiary specialized clinic. To assess cannabis-related variables, patients completed a questionnaire developed for the purpose of this study, investigating cannabis use-related habits and the influence of cannabis use on OCD symptoms and treatments. A set of clinician and self-reported questionnaires was administered to measure disease severity. The sample was then divided into three subgroups according to the pattern of cannabis use: "current users" (CUs), "past-users" (PUs), and "non-users" (NUs). RESULTS Approximately 42.8% of patients reported lifetime cannabis use and 14.3% reported current use. Approximately 10% of cannabis users reported an improvement in OCD symptoms secondary to cannabis use, while 23.3% reported an exacerbation of anxiety symptoms. CUs showed specific unfavorable clinical variables compared to PUs and NUs: a significant higher rate of lifetime use of tobacco, alcohol, and other substances, and a higher rate of pre-OCD onset comorbidities. Conversely, the three subgroups showed a similar severity of illness. CONCLUSION A considerable subgroup of patients with OCD showed a predisposition towards cannabis use and was associated with some specific clinical characteristics, suggesting the need for targeted consideration and interventions in this population.
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Affiliation(s)
- Beatrice Benatti
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
- Department of Health Sciences, "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutic, University of Milan, Milan, Italy
| | - Matteo Vismara
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
- Department of Health Sciences, "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutic, University of Milan, Milan, Italy
| | - Lorenzo Casati
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
| | - Simone Vanzetto
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
| | - Dario Conti
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
| | - Giovanna Cirnigliaro
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
| | - Alberto Varinelli
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
| | - Martina Di Bartolomeo
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, Teramo, Italy
| | - Claudio D'addario
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, Teramo, Italy
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Micheal Van Ameringen
- Department of Psychiatry and Behavioural Neuroscience, McMaster University-MacAnxiety Research Centre, Hamilton, ON, Canada
| | - Bernardo Dell'Osso
- Department of Mental Health, Department of Biomedical and Clinical Sciences "Luigi Sacco", University of Milan, Milan, Italy
- Department of Health Sciences, "Aldo Ravelli" Center for Neurotechnology and Brain Therapeutic, University of Milan, Milan, Italy
- Department of Psychiatry and Behavioral Sciences, Bipolar Disorders Clinic, Stanford University, Stanford, CA, USA
- "Centro per lo studio dei meccanismi molecolari alla base delle patologie neuro-psico-geriatriche", University of Milan, Milan, Italy
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Bedard-Gilligan M, Lehinger E, Cornell-Maier S, Holloway A, Zoellner L. Effects of Cannabis on PTSD Recovery: Review of the Literature and Clinical Insights. CURRENT ADDICTION REPORTS 2022; 9:203-216. [PMID: 36385902 PMCID: PMC9648847 DOI: 10.1007/s40429-022-00414-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/20/2022] [Indexed: 11/27/2022]
Abstract
Purpose of Review Individuals with posttraumatic stress disorder (PTSD) may use cannabis to reduce symptoms yet are also at risk for developing problematic use. This review outlines theories, summarizes recent empirical studies, and discusses clinical implications of cannabis use and PTSD recovery. Recent Findings Although naturalistic studies and open trials find a relationship between cannabinoids and PTSD symptom reduction, methodological limitations preclude definitive conclusions. The only randomized controlled trial to date found cannabis had no greater effect on PTSD symptoms than placebo. Summary Rigorous studies of the long-term impact of cannabis use on PTSD recovery are needed. Clinicians and researchers must weigh the potential therapeutic effect against the costs and risks associated with long-term cannabis use. Clinicians should consider all available PTSD treatment options, along with client level factors such as the function of cannabis use, motivation to change use, and the potential impact of cannabis on treatment engagement when making clinical recommendations.
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Affiliation(s)
| | - Elizabeth Lehinger
- Department of Psychiatry and Behavioral Sciences, University of Washington
| | | | - Ash Holloway
- Department of Psychology, University of Washington
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The Cannabis-Induced Epigenetic Regulation of Genes Associated with Major Depressive Disorder. Genes (Basel) 2022; 13:genes13081435. [PMID: 36011346 PMCID: PMC9407536 DOI: 10.3390/genes13081435] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 11/17/2022] Open
Abstract
The prevalence of depression is increasing worldwide, as is the number of people suffering from treatment-resistant depression; these patients constitute 30% of those treated. Unfortunately, there have not been significant advances in the treatment of this disorder in the past few decades. Exposure to cannabis and cannabis-derived compounds impacts depression symptomatology in different ways, with evidence indicating that cannabidiol has antidepressant effects; there have been mixed results with medical cannabis. Even though the exact molecular mechanisms of the action underlying changes in depression symptomatology upon exposure to cannabis and cannabis-derived compounds are still unknown, there is strong evidence that these agents have a widespread impact on epigenetic regulation. We hypothesized that exposure to cannabis or cannabis-derived compounds changes the DNA methylation levels of genes associated with depression. To test this hypothesis, we first performed a literature search to identify genes that are differentially methylated upon exposure to cannabis and cannabis-derived compounds, as reported in methylome-wide association studies. We next checked whether genes residing in loci associated with depression, as identified in the largest currently available genome-wide association study of depression, were reported to be epigenetically regulated by cannabis or cannabis-related compounds. Multiple genes residing in loci associated with depression were found to be epigenetically regulated by exposure to cannabis or cannabis-derived compounds. This epigenomic regulation of depression-associated genes by cannabis or cannabis-derived compounds was reported across diverse organisms, tissues, and developmental stages and occurred in genes crucial for neuronal development, functioning, survival, and synapse functioning, as well as in genes previously implicated in other mental disorders.
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Bindler RJ, Watson CJW, Lyons AJ, Skeiky L, Lewis J, McDonell M, Lazarus P, Wilson M. Drug-Drug Interaction Between Orally Administered Hydrocodone-Acetaminophen and Inhalation of Cannabis Smoke: A Case Report. Hosp Pharm 2022; 57:518-525. [PMID: 35898257 PMCID: PMC9310317 DOI: 10.1177/00185787211061374] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Objective To determine if a 2-day protocol measuring pharmacokinetic and pharmacodynamic characteristics can demonstrate drug-drug interactions when smoked cannabis is added to orally administered hydrocodone/acetaminophen combination products. Case Summary A 51-year-old non-Hispanic white male with chronic pain diagnoses participated in a 2-day pilot protocol. The participant attended two 7-hour in-lab days where he received 10 blood draws each day and completed self-administered pain and anxiety surveys. For both days, the participant took his prescribed dose of hydrocodone/acetaminophen (1/2 tablet of 7.5 mg/325 mg combination product) with the addition of 1 smoked pre-rolled marijuana cigarette (labeled as 0.5 g; 22.17% Δ9-tetrahydrocannabinol; 0.12% cannabidiol) on Day 2. Blood specimens were analyzed using mass spectrometry to quantify the difference of plasma hydrocodone levels between Day 1 and Day 2. Results Compared to Day 1, lower levels of pain and anxiety were reported during Day 2 with the addition of cannabis to oral hydrocodone/acetaminophen. Day 2 pharmacokinetic analysis also revealed more rapid absorption and overall lower levels of hydrocodone in plasma. Discussion Lower hydrocodone plasma levels in Day 2 may indicate cannabis's effect on metabolism and reduce the risk of opioid toxicity. The quicker absorption rate of hydrocodone could explain lower pain and anxiety scores reported on the second day. Conclusion and Relevance A 2-day protocol was able to capture differences across time in pharmacokinetic and pharmacodynamic measurements. Larger studies can be designed to better characterize the potential drug-drug interaction of cannabis and opioids.
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Affiliation(s)
| | | | | | | | - Jamie Lewis
- Northwest Spine and Pain Medicine, Spokane, WA, USA
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62
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Characterizing anxiety, pain, sleep, and quality of life among patients in a state Medical Marijuana Program. Complement Ther Clin Pract 2022; 48:101612. [DOI: 10.1016/j.ctcp.2022.101612] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 05/09/2022] [Accepted: 05/29/2022] [Indexed: 11/17/2022]
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Sachedina F, Chan C, Damji RS, de Sanctis OJ. Medical cannabis use in Canada and its impact on anxiety and depression: A retrospective study. Psychiatry Res 2022; 313:114573. [PMID: 35598566 DOI: 10.1016/j.psychres.2022.114573] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 04/20/2022] [Accepted: 04/21/2022] [Indexed: 12/24/2022]
Abstract
This was a retrospective study of patients utilizing medical cannabis who received their medical cannabis documentation and allotment from a Harvest Medicine clinic in Canada to determine the impact of medical cannabis on anxiety and depression outcomes. Patients included in the study were at least 18 years of age with completed validated questionnaires for anxiety (GAD-7) and depression (PHQ-9) at their initial evaluation and at least one follow-up visit. There were 7,362 patients included in the sample, of which the average age was 49.8 years, and 53.1% were female. There were statistically significant improvements between baseline and follow-up scores for both the GAD-7 and PHQ-9, with larger improvements seen for patients who were actively seeking medical cannabis to treat anxiety or depression. From 12 months on, those reporting anxiety had an average decrease in GAD-7 scores that was greater than the minimum clinically important difference of 4, and the same was seen for patients reporting depression from 18 months on, with the average decrease in PHQ-9 scores more than the MCID minimum clinically important difference of 5. This study provides some evidence to support the effectiveness of medical cannabis as a treatment for anxiety and depression.
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Affiliation(s)
- Faraz Sachedina
- Harvest Medicine, Two Executive Place1824 Crowchild Tr. NW, Unit 101Calgary, ABT2M 3Y7.
| | - Carole Chan
- Harvest Medicine, Two Executive Place1824 Crowchild Tr. NW, Unit 101Calgary, ABT2M 3Y7
| | - Rahim S Damji
- Harvest Medicine, Two Executive Place1824 Crowchild Tr. NW, Unit 101Calgary, ABT2M 3Y7
| | - Olga J de Sanctis
- Harvest Medicine, Two Executive Place1824 Crowchild Tr. NW, Unit 101Calgary, ABT2M 3Y7
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Déguilhem A, Leclerc A, Goldberg M, Lemogne C, Roquelaure Y, Zins M, Airagnes G. Cannabis Use Increases the Risk of Sickness Absence: Longitudinal Analyses From the CONSTANCES Cohort. Front Public Health 2022; 10:869051. [PMID: 35712263 PMCID: PMC9197417 DOI: 10.3389/fpubh.2022.869051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Accepted: 05/05/2022] [Indexed: 11/13/2022] Open
Abstract
Aims To examine the longitudinal associations between cannabis use and risks of short (<7 days), medium (7-28 days), and long (>28 days) sickness absences at one-year follow-up. Methods 87,273 participants aged 18-65 years from the French CONSTANCES cohort reported their frequency of cannabis use at inclusion between 2012 and 2018. Sickness absences occurring during one year of follow-up were collected from national medico-administrative registries. Multivariable generalized linear regressions were used to compute the Odds Ratios (OR) with their 95% Confidence Intervals (CI) of having at least one sickness absence at follow-up compared to no sickness absence, while controlling for sociodemographic factors, chronic conditions and occupational factors. Results Cannabis use more than once a month was associated with an increased risk of short (OR, [95% CI]: 1.56 [1.32–1.83]) and medium (1.29 [1.07–1.54]) sickness absences at one-year follow-up, with dose-dependent relationships for short sickness absences (1.13 [1.08–1.18], p-for-trend <0.001). In stratified analyses, cannabis use was associated with an increased risk of sickness absences in older individuals, men, participants with good self-rated health, living or having lived as a couple, and having an open-ended contract. Conclusions Cannabis use prospectively increased the risk of short and medium sickness absences, even from once a month and with a dose-dependent relationship for short sickness absences. These findings should be considered in information and prevention public health campaigns to alert the general population and workers to this increased risk.
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Affiliation(s)
- Amélia Déguilhem
- INSERM, Population-based Epidemiological Cohorts Unit, UMS 011, Villejuif, France
| | - Annette Leclerc
- INSERM, Population-based Epidemiological Cohorts Unit, UMS 011, Villejuif, France
| | - Marcel Goldberg
- INSERM, Population-based Epidemiological Cohorts Unit, UMS 011, Villejuif, France
| | - Cédric Lemogne
- Université Paris Cité, AP-HP, Hôpital Hôtel-Dieu, DMU Psychiatrie et Addictologie, Service de Psychiatrie de l'adulte, INSERM, Institute of Psychiatry and Neuroscience of Paris, UMR_S1266, Paris, France
| | - Yves Roquelaure
- Centre Hospitalier Universitaire d'Angers, Pathologie Professionnelle et Médecine du Travail, Research Institute for Environmental and Occupational Health, INSERM, Ester, Epidemiology in Occupational Health and Ergonomics, UMR_S 1085, Angers, France
| | - Marie Zins
- INSERM, Population-based Epidemiological Cohorts Unit, UMS 011, Villejuif, France
| | - Guillaume Airagnes
- Université Paris Cité, AP-HP, Hôpital Européen Georges Pompidou, DMU Psychiatrie et Addictologie, Centre Ambulatoire d'Addictologie, INSERM, Population-based Epidemiological Cohorts Unit, UMS 011, Villejuif, France
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Jashinski J, Grossman E, Quaye A, Cather C, Potter K, Schoenfeld DA, Evins AE, Gilman JM. Randomised, pragmatic, waitlist controlled trial of cannabis added to prescription opioid support on opioid dose reduction and pain in adults with chronic non-cancer pain: study protocol. BMJ Open 2022; 12:e064457. [PMID: 35680252 PMCID: PMC9185656 DOI: 10.1136/bmjopen-2022-064457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
INTRODUCTION Chronic, non-cancer pain impacts approximately 50 million adults in the USA (20%), approximately 25% of whom receive chronic prescription opioids for pain despite limited empirical efficacy data and strong dose-related risk for opioid use disorder and opioid overdose. Also despite lack of efficacy data, there are many reports of people using cannabis products to manage chronic pain and replace or reduce chronic opioids. Here we describe the protocol for a randomised trial of the effect of cannabis, when added to a behavioural pain management and prescription opioid taper support programme, on opioid utilisation, pain intensity and pain interference. METHODS This is a pragmatic, single-blind, randomised, wait-list controlled trial that aims to enrol 250 adults taking prescription opioids at stable doses of ≥25 morphine milligram equivalents per day for chronic non-cancer pain who express interest in using cannabis to reduce their pain, their opioid dose or both. All participants will be offered a weekly, 24-session Prescription Opioid Taper Support group behavioural pain management intervention. Participants will be randomly assigned in 1:1 ratio to use cannabis products, primarily from commercial cannabis dispensaries or to abstain from cannabis use for 6 months. Coprimary outcomes are change in prescription monitoring programme-verified opioid dose and change in Pain, Enjoyment, General Activity scale scores. Secondary outcomes include quality of life, depression, anxiety, self-reported opioid dose and opioid and cannabis use disorder symptoms. All other outcomes will be exploratory. We will record adverse events. ETHICS AND DISSEMINATION This study has ethical approval by the Massachusetts General Brigham Institutional Review Board (#2021P000871). Results will be published in peer-reviewed journals and presented at national conferences. TRIAL REGISTRATION NUMBER NCT04827992.
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Affiliation(s)
- Julia Jashinski
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Ellie Grossman
- Department of Medicine, Cambridge Health Alliance, Somerville, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - Aurora Quaye
- Department of Anesthesiology, MaineHealth, Portland, Maine, USA
| | - Corinne Cather
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - Kevin Potter
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - David A Schoenfeld
- Department of Biostatistics, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - A Eden Evins
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - Jodi M Gilman
- Department of Psychiatry, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
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66
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Morris C. Negotiating Ambiguous Substance Use: UK newspaper representations of self-prescribing medicinal cannabis use in the 1990s. JOURNAL OF DRUG ISSUES 2022. [DOI: 10.1177/00220426221090177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This paper examined representations of medicinal cannabis users in UK newspapers, 1990–1998. It is important to understand the significance of these newspaper articles during this early stage of the growing cultural normalisation of medicinal cannabis use, in the UK, which is not documented in the existing literature. This is a very different period in relation to access to information for members of the public because it was before the widespread use of the internet. The significance of these dates is also that I started interviewing medicinal cannabis users in 1998, which led to Coomber et al. (2003). Very significantly, almost half of the participants in that article indicated that newspapers were the source of the idea that cannabis was medicinally useful and that this accounted for why they began to use it medicinally. What was in those newspaper articles that encouraged this view? In the current article, I examined 60 newspaper articles about medicinal cannabis use, using a thematic analysis which also draws on aspects of critical discourse analysis. I report on the process of symbolic boundary work which negotiates the ambiguity of individuals portrayed as social insiders but who used cannabis. The representations within the articles emphasized the social insider characteristics of medicinal cannabis users, emphasized their genuine illnesses/impairments, but interestingly also articulated misunderstandings by the journalists which contributed to a positive portrayal.
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Affiliation(s)
- Craig Morris
- Senior Lecturer in Sociology, University of Greenwich, London, SE, UK
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67
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Asselin A, Lamarre OB, Chamberland R, McNeil SJ, Demers E, Zongo A. A description of self-medication with cannabis among adults with legal access to cannabis in Quebec, Canada. J Cannabis Res 2022; 4:26. [PMID: 35619155 PMCID: PMC9134718 DOI: 10.1186/s42238-022-00135-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 05/03/2022] [Indexed: 11/10/2022] Open
Abstract
Objective Cannabis is increasingly used for medical purposes, particularly in countries like Canada where cannabis was recently legalized for recreational use. We aimed to assess self-medication with cannabis post-cannabis legalization among adults in the Canadian province of Quebec. Methods This is a cross-sectional online survey of a self-selected convenience sample conducted in Quebec, Canada, from November 2020 to January 2021. Individuals aged ≥ 21 years who endorsed using cannabis bought in legal recreational cannabis stores to self-medicate a health condition were included. Data were analyzed using descriptive statistics and stratified according to sex, age, and the type of cannabis use (exclusively medical versus medical and recreational use). Results Four hundred eighty-nine participants were included. The median age was 34 years, and 48% were women. About 25% reported exclusive medical use of cannabis. Treated conditions included anxiety (70%), insomnia (56%), pain (53%), depression (37%), and many others. Reasons for not consulting in cannabis clinics included lack of information (52%), the complexity of the process (39%), accessibility of cannabis clinics (23%), and others. Tetrahydrocannabinol (THC) dosage > 20% was reported by 32%. Smoking was the main route of use (81%). Possession of prescribed drugs was reported by 56%. Professionals consulted for information on cannabis included recreational cannabis store agents (36%), physicians (29%), and others. Overall, significant differences were observed for many of the comparisons according to sex, age, and the type of cannabis use. Conclusions Many conditions are self-medicated with cannabis. The use of high doses of cannabis, smoking as a preferred method of use, and concurrent use of other medications may pose some risks to individuals. Addressing the reported barriers to medical access to cannabis is urgently needed. Supplementary Information The online version contains supplementary material available at 10.1186/s42238-022-00135-y.
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Affiliation(s)
- Antoine Asselin
- Faculty of Pharmacy, Unversité Laval, Quebec City, QC, Canada
| | | | | | | | - Eric Demers
- Population Health and Optimal Health Practices Research Unit, CHU de Québec - Université Laval Research Centre, 1050 Chemin Ste-Foy (J1-14B), QC, G1S 4L8, Quebec City, Canada
| | - Arsène Zongo
- Faculty of Pharmacy, Unversité Laval, Quebec City, QC, Canada. .,Population Health and Optimal Health Practices Research Unit, CHU de Québec - Université Laval Research Centre, 1050 Chemin Ste-Foy (J1-14B), QC, G1S 4L8, Quebec City, Canada.
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Marzullo P, Maiocchi A, Paladino G, Ciriello U, Lo Presti L, Passarella D. Total Synthesis of (‐)‐Cannabidiol‐C4. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Paola Marzullo
- Università degli Studi di Milano: Universita degli Studi di Milano Chimica ITALY
| | - Alice Maiocchi
- Università degli Studi di Milano: Universita degli Studi di Milano Chemistry ITALY
| | | | | | - Leonardo Lo Presti
- Università degli Studi di Milano: Universita degli Studi di Milano Chemistry ITALY
| | - Daniele Passarella
- Universit� degli Studid di Milano Chimica Via C. Golgi 19 20133 Milano ITALY
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69
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Developing a real-world evidence base for prescribed cannabis in the United Kingdom: preliminary findings from Project Twenty21. Psychopharmacology (Berl) 2022; 239:1147-1155. [PMID: 33970291 DOI: 10.1007/s00213-021-05855-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Accepted: 04/15/2021] [Indexed: 10/21/2022]
Abstract
The therapeutic potential of medical cannabis to treat a variety of conditions is becoming increasingly recognised. Globally, a large number of countries have now legalised cannabis for medical uses and a substantial number of patients are able to access their medications. Yet in the UK, where medical cannabis was legalised in November 2018, only a handful of NHS prescriptions have been written, meaning that most patients are unable to access the medicine. Reasons for this are manyfold and include the perceived lack of clinical evidence due to the challenges of studying medical cannabis through randomised controlled trials. In order to develop the current evidence base, the importance of incorporating real-world data (RWD) to assess the effectiveness and efficacy of medical cannabis has gradually become recognised. The current paper provides a detailed outline of Project Twenty21 (T21), the UK's first medical cannabis registry, launched in August 2020. We provide the rationale for T21 and describe the methodology before reporting the characteristics of the 'first patients' enrolled in the registry. We describe the health status of all patients enrolled into the project during its first 7 months of operation and the sociodemographic characteristics and primary presenting conditions for these patients, as well as details of the medical cannabis prescribed to these individuals. By 12th March 2021, 678 people had been enrolled into T21; the majority (64%) were male and their average age was 38.7 years (range = 18-80). The most commonly reported primary conditions were chronic pain (55.6%) and anxiety disorders (32.0%) and they reported high levels of multi-morbidity, including high rates of insomnia and depression. We also present preliminary evidence from 75 patients followed up after 3 months indicating that receipt of legal, prescribed cannabis was associated with a significant increase in self-reported health, assessed using the visual analogue scale of the EQ-5D-5L (Cohen's d = .77, 95% CI = .51-1.03). Our initial findings complement reports from other large-scale databases globally, indicating that the current RWD is building up a pattern of evidence. With many clinicians demanding better and faster evidence to inform their decisions around prescribing medical cannabis, the current and future results of T21 will expand the existing evidence base on the effectiveness of cannabis-based medical products (CBMPs).
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70
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Kuhathasan N, Minuzzi L, MacKillop J, Frey BN. An investigation of cannabis use for insomnia in depression and anxiety in a naturalistic sample. BMC Psychiatry 2022; 22:303. [PMID: 35484520 PMCID: PMC9052466 DOI: 10.1186/s12888-022-03948-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Accepted: 04/21/2022] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Little is known about cannabis use for insomnia in individuals with depression, anxiety, and comorbid depression and anxiety. To develop a better understanding of distinct profiles of cannabis use for insomnia management, a retrospective cohort study was conducted on a large naturalistic sample. METHODS Data were collected using the medicinal cannabis tracking app, Strainprint®, which allows users to monitor and track cannabis use for therapeutic purposes. The current study examined users managing insomnia symptoms in depression (n = 100), anxiety (n = 463), and comorbid depression and anxiety (n = 114), for a total of 8476 recorded sessions. Inferential analyses used linear mixed effects modeling to examine self-perceived improvement across demographic variables and cannabis product variables. RESULTS Overall, cannabis was perceived to be efficacious across all groups, regardless of age and gender. Dried flower and oral oil were reported as the most used and most efficacious product forms. In the depression group, all strains were perceived to be efficacious and comparisons between strains revealed indica-dominant (Mdiff = 1.81, 95% CI 1.26-2.36, Padj < .001), indica hybrid (Mdiff = 1.34, 95% CI 0.46-2.22, Padj = .045), and sativa-dominant (Mdiff = 1.83, 95% CI 0.68-2.99, Padj = .028) strains were significantly more efficacious than CBD-dominant strains. In anxiety and comorbid conditions, all strain categories were perceived to be efficacious with no significant differences between strains. CONCLUSIONS In terms of perceptions, individuals with depression, anxiety, and both conditions who use cannabis for insomnia report significant improvements in symptom severity after cannabis use. The current study highlights the need for placebo-controlled trials investigating symptom improvement and the safety of cannabinoids for sleep in individuals with mood and anxiety disorders.
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Affiliation(s)
- Nirushi Kuhathasan
- grid.416721.70000 0001 0742 7355Mood Disorders Program and Women’s Health Concerns Clinic, St. Joseph’s Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada ,grid.25073.330000 0004 1936 8227Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada
| | - Luciano Minuzzi
- grid.416721.70000 0001 0742 7355Mood Disorders Program and Women’s Health Concerns Clinic, St. Joseph’s Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada ,grid.25073.330000 0004 1936 8227Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada
| | - James MacKillop
- grid.25073.330000 0004 1936 8227Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada ,grid.25073.330000 0004 1936 8227Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada ,grid.25073.330000 0004 1936 8227Peter Boris Centre for Addictions Research, McMaster University/St. Joseph’s Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada
| | - Benicio N. Frey
- grid.416721.70000 0001 0742 7355Mood Disorders Program and Women’s Health Concerns Clinic, St. Joseph’s Healthcare Hamilton, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada ,grid.25073.330000 0004 1936 8227Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada ,grid.25073.330000 0004 1936 8227Department of Psychiatry and Behavioural Neurosciences, McMaster University, 100 West 5th Street, Hamilton, ON L8N 3K7 Canada
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Stueber A, Cuttler C. Self-Reported Effects of Cannabis on ADHD Symptoms, ADHD Medication Side Effects, and ADHD-Related Executive Dysfunction. J Atten Disord 2022; 26:942-955. [PMID: 34632827 DOI: 10.1177/10870547211050949] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE People with ADHD are more likely to use cannabis but little is known about the effects of cannabis on ADHD symptoms, ADHD medication side effects, or ADHD-related executive dysfunction. METHOD Students (n = 1,738) completed an online survey containing measures of ADHD symptoms, cannabis use, perceived effects of cannabis on ADHD symptoms and medication side effects, as well as executive dysfunction. RESULTS Participants with ADHD who have used cannabis reported that cannabis has acute beneficial effects on many symptoms of ADHD (e.g., hyperactivity, impulsivity). Further, they perceived cannabis to improve most of their medication side effects (e.g., irritability, anxiety). Finally, cannabis use frequency was a significant moderator of the associations between symptom severity and executive dysfunction. CONCLUSION Results suggest people with ADHD may be using cannabis to self-medicate for many of their symptoms and medication side effects and that more frequent use may mitigate ADHD-related executive dysfunction.
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72
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Mezaache S, Donadille C, Martin V, Le Brun Gadelius M, Appel L, Spire B, Briand Madrid L, Bastien M, Roux P. Changes in cannabis use and associated correlates during France's first COVID-19 lockdown in daily cannabis users: results from a large community-based online survey. Harm Reduct J 2022; 19:26. [PMID: 35292040 PMCID: PMC8922077 DOI: 10.1186/s12954-022-00611-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Accepted: 03/04/2022] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Lockdown measures during the first wave of the COVID-19 pandemic in France led to serious public health concerns over people who use illicit drugs, especially in terms of mental health. We assessed changes in cannabis use during the first lockdown in France among daily cannabis users and associated correlates. METHODS CANNAVID is a French, national, cross-sectional web-based survey, conducted from 17 April to 11 May 2020. Daily cannabis users aged ≥ 18 years and living in France were invited to participate through advertisements. Respondents completed an ad hoc questionnaire on a dedicated online platform. We analyzed changes in cannabis use during the first lockdown (i.e., stopped, decreased, unchanged, or increased) and performed a multinomial logistic regression analysis to evaluate correlates of these changes. RESULTS Of the 4019 participants, 74.0% were men. Median age was 27 years (interquartile range: 22-37). With regard to cannabis use, 293 (7.3%) persons stopped, 1153 (28.7%) decreased, 1146 (28.5%) did not change, and 1427 (35.5%) increased their use during the lockdown. A multinomial logistic regression model revealed several sociodemographic, behavioral and health-related factors associated with changes in cannabis use. Compared with participants with an unchanged level of cannabis use during the lockdown, those who increased and those who stopped cannabis use were more likely to have increased tobacco and alcohol use and to have experienced depression and sleep disorders intensification. Those who stopped cannabis use were also more likely to have increased benzodiazepine use and to have experienced pain increase during lockdown. CONCLUSIONS France's first COVID-19-related lockdown had a differential impact on daily cannabis users' consumption patterns. Most study respondents reported changes to their cannabis consumption pattern. Those who reported a stable cannabis use were more likely to report fewer negative changes. Specific interventions are needed for this population, as well as research to assess the long-term impacts of these changes.
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Affiliation(s)
- Salim Mezaache
- Sciences économiques & sociales de la santé & traitement de l'information médicale, Aix-Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France
| | - Cécile Donadille
- Sciences économiques & sociales de la santé & traitement de l'information médicale, Aix-Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France
| | | | | | | | - Bruno Spire
- Sciences économiques & sociales de la santé & traitement de l'information médicale, Aix-Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France
| | - Laelia Briand Madrid
- Sciences économiques & sociales de la santé & traitement de l'information médicale, Aix-Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France
| | - Martin Bastien
- Sciences économiques & sociales de la santé & traitement de l'information médicale, Aix-Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France
| | - Perrine Roux
- Sciences économiques & sociales de la santé & traitement de l'information médicale, Aix-Marseille Univ, INSERM, IRD, SESSTIM, Marseille, France. .,Faculté de médecine, INSERM U1252 SESSTIM, 27 bd Jean Moulin, Marseille, France.
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73
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Clinical Evidence of Cannabinoids in Migraine: A Narrative Review. J Clin Med 2022; 11:jcm11061479. [PMID: 35329806 PMCID: PMC8949974 DOI: 10.3390/jcm11061479] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 03/01/2022] [Accepted: 03/04/2022] [Indexed: 12/13/2022] Open
Abstract
The endocannabinoid system (ECS) influences many biological functions, and hence, its pharmacological modulation may be useful for several disorders, such as migraine. Preclinical studies have demonstrated that the ECS is involved in the modulation of trigeminal excitability. Additionally, clinical data have suggested that an endocannabinoid deficiency is associated with migraine. Given these data, phytocannabinoids, as well as synthetic cannabinoids, have been tried as migraine treatments. In this narrative review, the current clinical evidence of potential ECS involvement in migraine pathogenesis is summarized. Furthermore, studies exploring the clinical effects of phytocannabinoids and synthetic cannabinoids on migraine patients are reviewed.
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74
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Bar-Lev Schleider L, Mechoulam R, Sikorin I, Naftali T, Novack V. Adherence, Safety, and Effectiveness of Medical Cannabis and Epidemiological Characteristics of the Patient Population: A Prospective Study. Front Med (Lausanne) 2022; 9:827849. [PMID: 35223923 PMCID: PMC8864967 DOI: 10.3389/fmed.2022.827849] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Accepted: 01/10/2022] [Indexed: 12/31/2022] Open
Abstract
Background Despite the absence of rigorous prospective studies, there has been an increase in the use of cannabis-based medicinal products. During the study period, the use of medical cannabis in Israel was tightly regulated by national policy. Through a prospective study of approximately 10,000 patients, we aimed to characterize the medical cannabis patient population as well as to identify treatment adherence, safety, and effectiveness. Methods and Findings In this study of prescribed medical cannabis patients, adherence, safety, and effectiveness were assessed at 6 months. Treatment adherence was assessed by the proportion of patients purchasing the medication out of the total number of patients (excluding deceased cases and patients transferred to another cannabis clinic). Safety was assessed by the frequency of the side-effects, while effectiveness was defined as at least moderate improvement in the patient condition without treatment cessation or serious side-effects. The most frequent primary indications requiring therapy were cancer (49.1%), followed by non-specific pain (29.3%). The average age was 54.6 ± 20.9 years, 51.1% males; 30.2% of the patients reported prior experience with cannabis. During the study follow-up, 1,938 patients died (19.4%) and 1,735 stopped treatment (17.3%). Common side-effects, reported by 1,675 patients (34.2%), were: dizziness (8.2%), dry mouth (6.7%), increased appetite (4.7%), sleepiness (4.4%), and psychoactive effect (4.3%). Overall, 70.6% patients had treatment success at 6 months. Multivariable logistic regression analysis revealed that the following factors were associated with treatment success: cigarette smoking, prior experience with cannabis, active driving, working, and a young age. The main limitation of this study was the lack of data on safety and effectiveness of the treatment for patients who refused to undergo medical assessment even at baseline or died within the first 6 months. Conclusions We observed that supervised medical-cannabis treatment is associated with high adherence, improvement in quality of life, and a decrease in pain level with a low incidence of serious adverse events.
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Affiliation(s)
- Lihi Bar-Lev Schleider
- Clinical Research Center, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel.,Research Department, Tikun Olam - Cannbit Pharmaceuticals, Tel Aviv, Israel
| | - Raphael Mechoulam
- Institute for Drug Research, Medical Faculty Hebrew University, Jerusalem, Israel
| | - Inbal Sikorin
- Geriatric Department, Hadarim Nursing Home, Naan, Israel
| | - Timna Naftali
- Department of Gastroenterology and Hepatology, Meir Medical Center, Kfar Saba and Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Victor Novack
- Clinical Research Center, Soroka University Medical Center and Faculty of Health Sciences, Ben-Gurion University of the Negev, Be'er Sheva, Israel.,Department of Anesthesia, Critical Care and Pain Medicine, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA, United States
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75
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Cuttler C, LaFrance EM, Craft RM. A Large-Scale Naturalistic Examination of the Acute Effects of Cannabis on Pain. Cannabis Cannabinoid Res 2022; 7:93-99. [PMID: 33998864 PMCID: PMC8864413 DOI: 10.1089/can.2020.0068] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Introduction: Cannabis use for pain relief is commonly reported, yet laboratory studies and clinical trials suggest that cannabinoids are weak analgesics, and it is unclear whether perceived reductions in pain from before to after cannabis use relate to factors such as dose, method of administration, phytocannabinoid content, or the age or gender of the user. We determined whether inhalation of cannabis decreased self-reported pain ratings as well as whether user gender, age, time, method of administration, tetrahydrocannabinol (THC)/cannabidiol (CBD) content, or dose of cannabis contribute to changes in these ratings. We also examined whether tolerance may develop to the analgesic effects of cannabis over time. Materials and Methods: Archival data were obtained from Strainprint®, a medical cannabis app that allows patients to track symptoms before and after using different strains and doses of cannabis. Latent change score models and multilevel models were used to analyze data from 131,582 sessions in which inhaled cannabis was used to treat "muscle pain," "joint pain," or "nerve pain." Results: For all three pain symptoms, severity ratings decreased significantly after cannabis use. Women reported higher baseline and postcannabis pain severity than did men, and men reported larger decreases in pain than did women. Neither THC nor CBD content nor their interaction predicted reductions in pain ratings. However, vaping was associated with larger reductions in joint pain ratings than was smoking, and lower doses were associated with larger reductions in nerve pain ratings. Additionally, for all three pain symptoms, the dose of cannabis used to manage pain increased significantly over time. Conclusions: Inhaled cannabis reduces self-reported pain severity by ∼42-49%. However, these reductions appear to diminish across time, and patients use larger doses across time, suggesting that analgesic tolerance develops with continued use.
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Affiliation(s)
- Carrie Cuttler
- Department of Psychology, Washington State University, Pullman, Washington, USA
- *Address correspondence to: Carrie Cuttler, PhD, Department of Psychology, Washington State University, PO Box 644820, Pullman, WA 99164-4820, USA,
| | - Emily M. LaFrance
- Department of Psychology, Washington State University, Pullman, Washington, USA
| | - Rebecca M. Craft
- Department of Psychology, Washington State University, Pullman, Washington, USA
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Assanangkornchai S, Thaikla K, Talek M, Saingam D. Medical cannabis use in Thailand after its legalization: a respondent-driven sample survey. PeerJ 2022; 10:e12809. [PMID: 35047242 PMCID: PMC8759353 DOI: 10.7717/peerj.12809] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 12/27/2021] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Many countries now allow the consumption of cannabis or cannabinoids for medical purposes with varying approaches concerning products allowed and the regulatory frameworks prevailing their endowment. On 18 February 2019 Thailand passed legislation allowing the use of cannabis for medical purposes. This study aimed to examine patterns and purposes for consumption of medical cannabis, and consumers' perceptions and opinions towards benefits and harms of cannabis and related policies in 2019-2020. METHODS A cross-sectional study using a respondent-driven sampling (RDS) method was conducted in four sites across Thailand. Participants were 485 adults aged 18 years and over, living in the study region, who had used cannabis for medical purposes within the past 12 months. Face-to-face interviews using a structured questionnaire were used to collect data on (1) demographic characteristics, (2) pattern of consumption, (3) source of information and perception of benefits and harms of medical cannabis, and (4) opinion towards cannabis policies. Data were analyzed using RDS Analyst and presented as percentage and mean with 95% confidence interval (CI). RESULTS Most participants (84.7%, 95% CI [78.9-90.5]) used an oral form of crude oil extract while 9.2% (95% CI [4.1-14.2]) used the raw form. The most common uses were for treatment of cancers (23.3%, 95% CI [16.1-30.4]), neuropsychiatric symptoms (22.8%, 95% CI [17.5-28.0]), and musculoskeletal pains (21.6%, 95% CI [16.7-26.6]). Illegal sources such as underground traders (54.5%, 95% CI [40.8-68.3]), friends and relatives (12.2%, 95% CI [6.2-18.3]), not-for-profit provider groups (5.2%, 95% CI [0.5-10.9]), and clandestine growers or producers (2.9%, 95% CI [0.6-5.3]) were the main suppliers. Most (>80%) perceived cannabis could treat cancers, chronic pains, insomnia, Parkinson's disease and generalized anxiety disorder. Less than half perceived that cannabis could cause adverse conditions e.g., palpitation, panic, memory impairment and schizophrenic-like psychosis. Most respondents agreed or strongly agreed with the policies regarding permission to use cannabis for medical purposes (95.1%, 95% CI [92.0-98.2]), for the legal sale of medical cannabis products (95.9%, 95% CI [93.7-98.2]), and for people to grow cannabis for medical use (94.2%, 95% CI [91.8-96.5]). However, only two-thirds agreed with policies concerning the sales of cannabis (65.3%, 95% CI [56.9-73.7]) and home-grown cannabis for recreational purposes (61.3%, 95% CI [52.7-69.9]). CONCLUSION Our study reports the experiences of consumers of medical cannabis in the first year after its legalization in Thailand. Consumers reported various patterns and indications of consumption that were not supported by scientific evidence, but had positive perception of the results of consumption. These findings highlight ongoing policy challenges for Thailand and can be a lesson to be learned for other countries in the region.
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Affiliation(s)
- Sawitri Assanangkornchai
- Department of Epidemiology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
| | - Kanittha Thaikla
- Research Institute for Health Sciences, Chiang Mai University, Muang, Chiang Mai, Thailand
| | - Muhammadfahmee Talek
- Faculty of Nursing Pattani Campus, Prince of Songkla University, Muang, Pattani, Thailand
| | - Darika Saingam
- Department of Epidemiology, Faculty of Medicine, Prince of Songkla University, Hat Yai, Songkhla, Thailand
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Obuobi-Donkor G, Eboreime E, Shalaby R, Agyapong B, Agyapong VIO. Prevalence and correlates of cannabis abuse among residents in the community of Fort McMurray, a city in Northern Alberta which had endured multiple natural disasters. Front Psychiatry 2022; 13:962169. [PMID: 36213902 PMCID: PMC9533067 DOI: 10.3389/fpsyt.2022.962169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 08/22/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Cannabis is one of the widely used drugs for relaxation and may be abuse among users. Researchers have given attention to cannabis use among the general population while vulnerable populations who have experience multiple traumas may be at risk of cannabis abuse. Other factors may influence cannabis abuse among people exposed to traumas. OBJECTIVE The study aims to determine the prevalence and correlates of self-reported cannabis abuse among residents of Fort McMurray, a city in Northern Alberta, Canada. METHODS A cross-sectional survey was conducted using an online questionnaire. Sociodemographic data, trauma exposure, and clinical characteristics were collected to identify the possible risk factor of cannabis abuse. Data were analyzed with SPSS version 25 using a chi-square test and binary logistic regression analysis. Correlation analysis was also performed to ascertain likely cannabis abuse and the association with other mental health conditions. RESULTS Overall, participants who completed the survey were one hundred and eighty-sixed out of the two hundred and forty-nine residents who accessed the online survey, giving a response rate of 74.7%. The prevalence of self-reported cannabis abuse among participants was 14%. Most of the participants were females (159, 85.5%), more than 40 years of age (98, 52.7%), employed (175, 94.1%), owned their house (145, 78.0%), and 103 (60.6%) reported being exposed to at least a trauma (COVID-19, flooding, or wildfire). Regarding regression analysis results, participants living in a rented accommodation were nearly four times more likely to abuse cannabis (OR = 3.86; 95% CI: 1.34-11.14) than those owning their houses. Similarly, male participants were more than 6-folds more likely to abuse cannabis than the female gender (OR= 6.25; 95% CI: 1.89-20), and participants in a relationship were six times more likely to abuse cannabis than participants not in a relationship (OR = 6.33; 95% CI: 1.67-24.39). The study also found significant association of depressive symptoms (X 2 = 4.561; p = 0.033) and anxiety symptoms (X 2 = 4.700; p = 0.030) with likely cannabis abuse. CONCLUSION Demographic factors significantly predicted likely cannabis abuse in the Fort McMurray population, and cannabis abuse significantly correlated with presence of moderate to high anxiety and depression symptoms. It is essential to mobilized resources to support vulnerable communities and manage cannabis abuse.
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Affiliation(s)
| | - Ejemai Eboreime
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
| | - Reham Shalaby
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada
| | - Belinda Agyapong
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada.,Global Psychological E-Health Foundation, Edmonton, AB, Canada
| | - Vincent I O Agyapong
- Department of Psychiatry, University of Alberta, Edmonton, AB, Canada.,Department of Psychiatry, Dalhousie University, Halifax, NS, Canada
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78
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Affiliation(s)
- Margaret Haney
- Division on Substance Use Disorders, Department of Psychiatry, Columbia University Irving Medical Center, and New York State Psychiatric Institute, New York
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79
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Pritchett CE, Flynn H, Wang Y, Polston JE. Medical Cannabis Patients Report Improvements in Health Functioning and Reductions in Opiate Use. Subst Use Misuse 2022; 57:1883-1892. [PMID: 36168127 DOI: 10.1080/10826084.2022.2107673] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Purpose: Opioid use rates have dropped as North American patients gain access to medical cannabis, indicating a harm reduction role, yet health outcomes remain mostly unexplored. This study presents self-reported medical cannabis use, perceptions of health functioning, and changes in opioid pain medication use in Florida medical cannabis patients.Methods: Patients (n = 2,183) recruited from medical dispensaries across Florida completed a 66-item cross-sectional survey that included demographic, health, and medication usage items, along with items from the Medical Outcomes Survey (SF-36) to assess health functioning before and after cannabis initiation.Results: Most participants were between the ages of 20 and 70 years of age (95%), over 54% were female, 47% were employed, and most (85%) were white. Commonly reported ailment groups were Pain and Mental Health combined (47.92%), Mental Health (28.86%) or Pain (9.07%). Health domains of bodily pain, physical functioning, and social functioning improved while limitations due to physical and emotional problems were unchanged. Most patients rated medical cannabis as being important to their quality of life. Many (60.98%) reported using pain medications prior to medical cannabis, 93.36% of these reported a change in pain medication after medical cannabis. The majority of participants (79%) reported either cessation or reduction in pain medication use following initiation of medical cannabis and 11.47% described improved functioning.Conclusions: The findings suggest that some medical cannabis patients decreased opioid use without harming quality of life or health functioning, soon after the legalization of medical cannabis. The public health implications of medical cannabis as an alternative pain medication are discussed.
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Affiliation(s)
| | - Heather Flynn
- Department of Behavioral Sciences and Social Medicine, Florida State University College of Medicine, Tallahassee, Florida, USA
| | - Yuxia Wang
- Department of Behavioral Sciences and Social Medicine, Florida State University College of Medicine, Tallahassee, Florida, USA
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80
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Tumati S, Lanctôt KL, Wang R, Li A, Davis A, Herrmann N. Medical Cannabis Use Among Older Adults in Canada: Self-Reported Data on Types and Amount Used, and Perceived Effects. Drugs Aging 2021; 39:153-163. [PMID: 34940961 PMCID: PMC8696251 DOI: 10.1007/s40266-021-00913-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/02/2021] [Indexed: 12/20/2022]
Abstract
Background Medical cannabis use is growing among older adults. In this retrospective study, we aimed to assess the characteristics of older medical cannabis users including the indications, type and amount of cannabis used, perceived changes in symptoms after cannabis use, change in dose of concurrent medications, and adverse effects. Methods Data were collected between October 2014 and October 2020 from patients who were consulting the Canada-wide network of clinics of a medical cannabis provider and who were willing to answer questionnaires based on their medical status. The current study included older adults (≥ 65 years) who completed questionnaires at intake and first follow-up visits. Data were summarized with descriptive statistics, which were compared between men and women with t tests or chi-squared tests. Tests of proportions assessed categorical responses for perceived effects after cannabis use. Logistic regression was used to assess trends in cannabis usage. Results Data included that from 9766 older adult users at intake (mean ± SD age = 73.2 ± 6.8 years, females = 60.0%), among whom 4673 (females = 61.4%) returned for follow-up after 90.6 ± 58 days. The most common primary indication for which medical cannabis was sought was pain (67.7%), which was more common in women, whereas oncological and neurological conditions were more common in men. At follow-up, cannabis oil was used by 81.0% of older adults, among whom compositions containing only or mostly cannabidiol (CBD) had been used by 83.6%. Adverse effects reported by older adults at the follow-up visit included dry mouth (12.8%), drowsiness (8.6%), and dizziness (4.0%). The majority of older adults reported improvements in pain (72.7%, z = 1482.6, p < 0.0001, compared to worsening or no change), sleep (64.5%, z = 549.4, p < 0.0001), and mood (52.8%, z = 16.4, p < 0.0001), with 35.6% reporting use of a reduced dose of opioids and 19.9% a reduced dose of benzodiazepines. Interpretation Among older adults, medical cannabis is used more often by women, with CBD-containing cannabis oils being the most commonly used. Users reported improved pain, sleep, and mood symptoms at follow-up after cannabis use. This study describes the patterns of use of medical cannabis by older adults and highlights the need for research to determine appropriate indications, precise doses of active ingredients, and short- and long-term outcomes among older adults. Supplementary Information The online version contains supplementary material available at 10.1007/s40266-021-00913-y.
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Affiliation(s)
- Shankar Tumati
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Krista L Lanctôt
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, ON, Canada.
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.
| | - RuoDing Wang
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Abby Li
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, ON, Canada
| | - Andrew Davis
- Department of Economics, Acadia University, Wolfville, NS, Canada
| | - Nathan Herrmann
- Neuropsychopharmacology Research Group, Sunnybrook Research Institute, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
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Ross J, Slawek DE, Zhang C, Starrels JL, Levin FR, Sohler NL, Minami H, Arnsten JH, Cunningham CO. First-Year Trajectories of Medical Cannabis Use Among Adults Taking Opioids for Chronic Pain: An Observational Cohort Study. PAIN MEDICINE 2021; 22:3080-3088. [PMID: 34411246 DOI: 10.1093/pm/pnab257] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 07/30/2021] [Accepted: 08/12/2021] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To describe first-year trajectories of medical cannabis use and identify characteristics associated with patterns of use in a cohort of adults using opioids for chronic pain. DESIGN Latent class trajectory analysis of a prospective cohort study using data on the 14-day frequency of medical cannabis use. SETTING A large academic medical center and four medical cannabis dispensaries in the New York City metropolitan area. SUBJECTS Adults with chronic pain using opioids and newly certified for medical cannabis in New York between 2018 and 2020. METHODS Using latent class trajectory analysis, we identified clusters of participants based on the 14-day frequency of medical cannabis use. We used logistic regression to determine factors associated with cluster membership, including sociodemographic characteristics, pain, substance use, and mental health symptoms. RESULTS Among 99 participants, the mean age was 53 years; 62% were women, and 52% were White. We identified three clusters of medical cannabis use: infrequent use (n = 30, mean use = 1.5 days/14-day period), occasional use (n = 28, mean = 5.7 days/14-day period), and frequent use (n = 41, mean = 12.1 days/14-day period). Within clusters, use patterns did not vary significantly over 52 weeks. Differences were observed in two sociodemographic variables: Frequent (vs infrequent) use was associated with non-Hispanic White race/ethnicity (adjusted odds ratio 4.54, 95% confidence interval 1.49-14.29), while occasional (vs infrequent) use was associated with employment (adjusted odds ratio 13.84, 95% confidence interval 1.21-158.74). CONCLUSIONS Three clusters of medical cannabis use patterns emerged and were stable over time. Results suggest that structural factors related to race/ethnicity and employment may be major drivers of medical cannabis use, even among adults certified for its use.
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Affiliation(s)
- Jonathan Ross
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
| | - Deepika E Slawek
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
| | - Chenshu Zhang
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
| | - Joanna L Starrels
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
| | - Frances R Levin
- Division on Substance Use Disorders, NY State Psychiatric Institute, New York, New York, USA.,Department of Psychiatry, Columbia University Irving Medical Center, New York, USA
| | - Nancy L Sohler
- Department of Community Health and Social Medicine, City University of New York, New York, New York, USA
| | - Haruka Minami
- Department of Psychology, Fordham University, Bronx, New York, USA
| | - Julia H Arnsten
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
| | - Chinazo O Cunningham
- Division of General Internal Medicine, Department of Medicine, Montefiore Health System, Bronx, New York, USA
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82
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Gallego-Landin I, García-Baos A, Castro-Zavala A, Valverde O. Reviewing the Role of the Endocannabinoid System in the Pathophysiology of Depression. Front Pharmacol 2021; 12:762738. [PMID: 34938182 PMCID: PMC8685322 DOI: 10.3389/fphar.2021.762738] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Accepted: 11/11/2021] [Indexed: 01/04/2023] Open
Abstract
Major depressive disorder is a high-impact, debilitating disease and it is currently considered the most prevalent mental illness. It is associated with disability, as well as increased morbidity and mortality. Despite its significant repercussions in our society, its exact pathophysiology remains unclear and therefore, available antidepressant treatment options are limited and, in some cases, ineffective. In the past years, research has focused on the development of a multifactorial theory of depression. Simultaneously, evidence supporting the role of the endocannabinoid system in the neurobiology of neuropsychiatric diseases has emerged. Studies have shown that the endocannabinoid system strongly impacts neurotransmission, and the neuroendocrine and neuroimmune systems, which are known to be dysfunctional in depressive patients. Accordingly, common antidepressants were shown to have a direct impact on the expression of cannabinoid receptors throughout the brain. Therefore, the relationship between the endocannabinoid system and major depressive disorder is worth consideration. Nevertheless, most studies focus on smaller pieces of what is undoubtedly a larger mosaic of interdependent processes. Therefore, the present review summarizes the existing literature regarding the role of the endocannabinoid system in depression aiming to integrate this information into a holistic picture for a better understanding of the relationship between the two.
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Affiliation(s)
- Ines Gallego-Landin
- Neurobiology of Behaviour Research Group (GReNeC—NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Alba García-Baos
- Neurobiology of Behaviour Research Group (GReNeC—NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Adriana Castro-Zavala
- Neurobiology of Behaviour Research Group (GReNeC—NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
| | - Olga Valverde
- Neurobiology of Behaviour Research Group (GReNeC—NeuroBio), Department of Experimental and Health Sciences, Universitat Pompeu Fabra, Barcelona, Spain
- Neuroscience Research Programme, IMIM-Hospital del Mar Research Institute, Barcelona, Spain
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83
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Sexton M, Garcia JM, Jatoi A, Clark CS, Wallace MS. The Management of Cancer Symptoms and Treatment-Induced Side Effects With Cannabis or Cannabinoids. J Natl Cancer Inst Monogr 2021; 2021:86-98. [PMID: 34850897 DOI: 10.1093/jncimonographs/lgab011] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 09/02/2021] [Indexed: 01/06/2023] Open
Abstract
Cannabis and cannabinoids are increasingly being accessed and used by patients with advanced cancer for various symptoms and general quality of life. Specific symptoms of pain, nausea and vomiting, loss of appetite and cachexia, anxiety, sleep disturbance, and medical trauma are among those that have prompted patients with cancer to use cannabis. This conference report from the National Cancer Institute's "Cannabis, Cannabinoid and Cancer Research Symposium" on the topic of "Cancer Symptom/Treatment Side Effect Management" is an expert perspective of cannabis intervention for cancer and cancer treatment-related symptoms. The purpose of the symposium was to identify research gaps, describe the need for high-quality randomized prospective studies of medical cannabis for palliative care in patients with cancer, and evaluate the impact of medical cannabis on cancer survivors' quality of life. Further, education of clinicians and affiliated health-care providers in guiding cancer patients in using cannabis for cancer care would benefit patients. Together, these steps will further aid in refining the use of cannabis and cannabinoids for symptom palliation and improve safety and efficacy for patients.
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Affiliation(s)
- Michelle Sexton
- Department of Anesthesiology, Division of Pain Management, University of California, San Diego, CA, USA
| | - Jose M Garcia
- Department of Medicine, Division of Geriatrics, University of Washington and Geriatric Research Education and Clinical Center, Puget Sound Veterans Administration Health Care System, Seattle, WA, USA
| | - Aminah Jatoi
- Department of Oncology, Mayo Clinic, Rochester, MN, USA
| | - Carey S Clark
- Department of Nursing, Pacific College of Health and Science, San Diego, CA, USA
| | - Mark S Wallace
- Department of Anesthesiology, Division of Pain Management, University of California, San Diego, CA, USA
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Banerjee R, Erridge S, Salazar O, Mangal N, Couch D, Pacchetti B, Sodergren MH. Real World Evidence in Medical Cannabis Research. Ther Innov Regul Sci 2021; 56:8-14. [PMID: 34748204 PMCID: PMC8688379 DOI: 10.1007/s43441-021-00346-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 10/12/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Whilst access to cannabis-based medicinal products (CBMPs) has increased globally subject to relaxation of scheduling laws globally, one of the main barriers to appropriate patient access remains a paucity of high-quality evidence surrounding their clinical effects. DISCUSSION Whilst randomised controlled trials (RCTs) remain the gold-standard for clinical evaluation, there are notable barriers to their implementation. Development of CBMPs requires novel approaches of evidence collection to address these challenges. Real world evidence (RWE) presents a solution to not only both provide immediate impact on clinical care, but also inform well-conducted RCTs. RWE is defined as evidence derived from health data sourced from non-interventional studies, registries, electronic health records and insurance data. Currently it is used mostly to monitor post-approval safety requirements allowing for long-term pharmacovigilance. However, RWE has the potential to be used in conjunction or as an extension to RCTs to both broaden and streamline the process of evidence generation. CONCLUSION Novel approaches of data collection and analysis will be integral to improving clinical evidence on CBMPs. RWE can be used in conjunction or as an extension to RCTs to increase the speed of evidence generation, as well as reduce costs. Currently, there is an abundance of potential data however, whilst a number of platforms now exist to capture real world data it is important the right tools and analysis are utilised to unlock potential insights from these.
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Affiliation(s)
- Rishi Banerjee
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Simon Erridge
- Department of Surgery and Cancer, Imperial College London, London, UK
- Sapphire Medical Clinics, UK Medical Cannabis Registry, London, UK
| | - Oliver Salazar
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Nagina Mangal
- Department of Surgery and Cancer, Imperial College London, London, UK
| | - Daniel Couch
- The Centre for Medicinal Cannabis, 18 Hanway Street, London, W1T 1UF, UK
| | | | - Mikael Hans Sodergren
- Department of Surgery and Cancer, Imperial College London, London, UK.
- Sapphire Medical Clinics, UK Medical Cannabis Registry, London, UK.
- Curaleaf International, London, UK.
- Division of Surgery, Department of Surgery & Cancer, Imperial College London, St Mary's Hospital, Academic Surgical Unit, 10th Floor QEQM, South Wharf Road, London, W2 1NY, UK.
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Kancherla N, Jeyanthi KM, Abbas R, Sathi TSCR, Upadhyay A, Garlapati SKP. Cannabis Associated Mental Health Effects: A Review. J Pharm Bioallied Sci 2021; 13:S943-S946. [PMID: 35017903 PMCID: PMC8686926 DOI: 10.4103/jpbs.jpbs_388_21] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 05/20/2021] [Accepted: 05/28/2021] [Indexed: 12/24/2022] Open
Abstract
According to the latest drift in Western countries, many lawmakers are trying to formulate policy to legalize the usage of Cannabis in the case of mentally vulnerable populations such as those suffering from depression, paranoia, and excessive anxiety. This particular trend has been due to short term success in the case of mood upliftment. Cannabis derivatives produce effects on both mood and cognitive function, which can be a double-edged sword if not followed with proper dosage. Beneficial effects, however, are limited and studies documenting those and even more meagre. Detrimental effects, especially those suffering from various hallucinating and delusional states, have been reported extensively in the literature. Here in the review article, we have tried to study and summarize various effects of Cannabis as well as Cannabis -derived products in the case of people who have various mental conditions. We have also tried to consider addiction to these substances and hence develop a framework for proper utilization of Cannabis in mentally ill people. Many clinicians are also in a dilemma when prescribing a Cannabis -based product to treat psychotic and mood-based disorders. Hence, a better understanding of the process of Cannabis -based treatment for the vulnerable population is necessary.
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Affiliation(s)
- Neeraj Kancherla
- Department of Psychiatry, King George Hospital, Visakhapatnam, Andhra Pradesh, India
| | - Keerthana Mani Jeyanthi
- Department of Internal Medicine, Sri Venkateshwaraa Medical College Hospital and Research Centre, Puducherry, India
| | - Ramsha Abbas
- Department of internal Medicine, Shifa College of Medicine, Islamabad, Pakistan
| | | | - Amrita Upadhyay
- Department of Internal Medicine, Nobel Medical College Teaching Hospital, Morang, Nepal
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Bilaonova A, Phillips JA, Anderson KG. Comparison of CBD and Cannabis Use Motives. CANNABIS (RESEARCH SOCIETY ON MARIJUANA) 2021; 4:60-68. [PMID: 37287529 PMCID: PMC10212268 DOI: 10.26828/cannabis/2021.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Cannabidiol, also known as CBD, has increasingly gained popularity as a cure-all product and is now found in products across a variety of industries. Despite the surge in popularity, little remains known about individual motives and patterns of CBD use. The goal of this study was to gain a better understanding of the similarities and differences between motives for CBD and cannabis use as well as comparing motives for younger and older users. Participants (N= 171) in U.S. states and territories with legalized cannabis for recreational use were recruited via Amazon MTurk and were asked to complete an anonymous survey assessing their CBD and cannabis use, effects, and motives for use. The greatest differences between self-reported CBD and cannabis use were for side effect profiles. While the recreational use motive was more commonly endorsed for cannabis, use for beauty purposes was more common for CBD. No age group differences emerged for motives to use CBD or cannabis. Future research examining age-related differences in a larger, more age-diverse samples is recommended.
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Affiliation(s)
- Aksinya Bilaonova
- Adolescent Health Research Program, Department of Psychology, Reed College, Portland, Oregon
| | - Joy A. Phillips
- The Donald P. Shiley BioScience Center, San Diego State University, San Diego, California
| | - Kristen G. Anderson
- Adolescent Health Research Program, Department of Psychology, Reed College, Portland, Oregon
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87
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Poudel S, Quinonez J, Choudhari J, Au ZT, Paesani S, Thiess AK, Ruxmohan S, Hosameddin M, Ferrer GF, Michel J. Medical Cannabis, Headaches, and Migraines: A Review of the Current Literature. Cureus 2021; 13:e17407. [PMID: 34589318 PMCID: PMC8459575 DOI: 10.7759/cureus.17407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2021] [Indexed: 12/12/2022] Open
Abstract
Cannabis has been long used since ancient times for both medical and recreational use. Past research has shown that cannabis can be indicated for symptom management disorders, including cancer, chronic pain, headaches, migraines, and psychological disorders (anxiety, depression, and post-traumatic stress disorder). Active ingredients in cannabis that modulate patients' perceptions of their conditions include Δ9‐tetrahydrocannabinol (THC), cannabidiol (CBD), flavonoids, and terpenes. These compounds work to produce effects within the endocannabinoid system to decrease nociception and decrease symptom frequency. Research within the United States of America is limited to date due to cannabis being classified as a schedule one drug per the Drug Enforcement Agency. Few anecdotal studies have found a limited relationship between cannabis use and migraine frequency. The purpose of the review article is to document the validity of how medical cannabis can be utilized as an alternative therapy for migraine management. Thirty-four relevant articles were selected after a thorough screening process using PubMed and Google Scholar databases. The following keywords were used: "Cannabis," "Medical Marijuana," "Headache," "Cannabis and Migraine," "Cannabis and Headache." This literature study demonstrates that medical cannabis use decreases migraine duration and frequency and headaches of unknown origin. Patients suffering from migraines and related conditions may benefit from medical cannabis therapy due to its convenience and efficacy.
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Affiliation(s)
- Sujan Poudel
- Division of Research and Academic Affairs, Larkin Community Hospital, Miami, USA
| | - Jonathan Quinonez
- Neurology/Osteopathic Neuromuscular Medicine, Larkin Community Hospital, Miami, USA
| | - Jinal Choudhari
- Division of Research and Academic Affairs, Larkin Community Hospital, Miami, USA
| | - Zachary T Au
- Family and Community Medicine, Larkin Community Hospital, Miami, Florida, USA
| | - Sylvia Paesani
- Division of Research and Academic Affairs, Larkin Community Hospital, Miami, USA
| | - Armond K Thiess
- Division of Research and Academic Affairs, Larkin Community Hospital, Miami, USA
| | - Samir Ruxmohan
- Neurology, Larkin Community Hospital, Miami, Florida, USA
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88
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Doeve BH, van de Meeberg MM, van Schaik FDM, Fidder HH. A Systematic Review With Meta-Analysis of the Efficacy of Cannabis and Cannabinoids for Inflammatory Bowel Disease: What Can We Learn From Randomized and Nonrandomized Studies? J Clin Gastroenterol 2021; 55:798-809. [PMID: 32675631 DOI: 10.1097/mcg.0000000000001393] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 06/07/2020] [Indexed: 12/20/2022]
Abstract
GOAL AND BACKGROUND A number of studies have investigated the effectiveness of cannabis or cannabinoids for treatment of inflammatory bowel diseases (IBD). We aimed to systematically analyze their effect in in the treatment of IBD patients. STUDY We included randomized controlled trials and nonrandomized studies analyzing IBD patients of any age using cannabi(noid)s. Two reviewers searched 3 databases until August 13, 2019. Primary outcome was clinical remission and secondary outcomes included inflammatory biomarkers, symptom improvement, quality of life (QoL) scores, and hospital outcomes. Risk of bias was assessed according to study type. The meta-analyses were performed using a random-effects model with subgroup analyses based on study type. RESULTS The search identified 682 records of which 15 nonrandomized studies and 5 randomized controlled trials were eligible for inclusion. The meta-analysis of the primary outcome included 146 randomized participants, all 18 years of age or older. Risk of bias was moderate. Cannabi(noid)s were not effective at inducing remission (risk ratio=1.56, 95% confidence interval=0.99-2.46). No effect on inflammatory biomarkers was observed. However, clinical symptoms (abdominal pain, general well-being, nausea, diarrhea, and poor appetite) all improved with cannabi(noid)s on Likert-scales. Baseline QoL scores were lower in patients using cannabis among cohort studies but improved significantly with cannabi(noid)s. Although length of hospital stay was shorter and risk of parenteral nutrition was lower in patients using cannabis, there was no effect on other IBD complications. CONCLUSIONS Cannabi(noid)s do not induce clinical remission or affect inflammation in IBD patients. However, cannabi(noid)s significantly improve patient-reported symptoms and QoL.
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Affiliation(s)
| | - Maartje M van de Meeberg
- Departments of Gastroenterology and Hepatology
- Clinical Pharmacology, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
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89
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Glodosky NC, Cuttler C, McLaughlin RJ. A review of the effects of acute and chronic cannabinoid exposure on the stress response. Front Neuroendocrinol 2021; 63:100945. [PMID: 34461155 PMCID: PMC8605997 DOI: 10.1016/j.yfrne.2021.100945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 07/28/2021] [Accepted: 08/24/2021] [Indexed: 10/20/2022]
Abstract
While cannabis has been used for centuries for its stress-alleviating properties, the effects of acute and chronic cannabinoid exposure on responses to stress remain poorly understood. This review provides an overview of studies that measured stress-related endpoints following acute or chronic cannabinoid exposure in humans and animals. Acute cannabinoid exposure increases basal concentrations of stress hormones in rodents and humans and has dose-dependent effects on stress reactivity in humans and anxiety-like behavior in rodents. Chronic cannabis exposure is associated with dampened stress reactivity, a blunted cortisol awakening response (CAR), and flattened diurnal cortisol slope in humans. Sex differences in these effects remain underexamined, with limited evidence for sex differences in effects of cannabinoids on stress reactivity in rodents. Future research is needed to better understand sex differences in the effects of cannabis on the stress response, as well as downstream impacts on mental health and stress-related disorders.
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Affiliation(s)
| | - Carrie Cuttler
- Department of Psychology, Washington State University, Pullman, WA, USA.
| | - Ryan J McLaughlin
- Department of Psychology, Washington State University, Pullman, WA, USA; Department of Integrative Physiology and Neuroscience, Washington State University, Pullman, WA, USA
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90
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Effects of Cannabinoid Exposure during Neurodevelopment on Future Effects of Drugs of Abuse: A Preclinical Perspective. Int J Mol Sci 2021; 22:ijms22189989. [PMID: 34576153 PMCID: PMC8472179 DOI: 10.3390/ijms22189989] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/30/2021] [Accepted: 09/09/2021] [Indexed: 12/29/2022] Open
Abstract
The endocannabinoid system plays a central role in the earliest stages of embryonic, postnatal and adolescent neurodevelopment. Aberrant activity of this system at key developmental phases has been shown to affect neural development. The aim of this review is to synthesise and analyse preclinical insights within rodent populations, focusing on the effects that perinatal (embryonic, gestational and early postnatal developmental stages) and adolescent (postnatal day 21–60) cannabinoid exposure impose across time on the subsequent activity of various drugs of abuse. Results in rodents show that exposure to cannabinoids during the perinatal and adolescent period can lead to multifaceted behavioural and molecular changes. In the perinatal period, significant effects of Δ9-THC exposure on subsequent opiate and amphetamine reward-related behaviours were observed primarily in male rodents. These effects were not extended to include cocaine or alcohol. In adolescence, various cannabinoid agonists were used experimentally. This array of cannabinoids demonstrated consistent effects on opioids across sex. In contrast, no significant effects were observed regarding the future activity of amphetamines and cocaine. However, these studies focused primarily on male rodents. In conclusion, numerous gaps and limitations are apparent in the current body of research. The sparsity of studies analysing the perinatal period must be addressed. Future research within both periods must also focus on delineating sex-specific effects, moving away from a male-centric focus. Studies should also aim to utilise more clinically relevant cannabinoid treatments.
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91
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Zeng L, Lytvyn L, Wang X, Kithulegoda N, Agterberg S, Shergill Y, Esfahani MA, Heen AF, Agoritsas T, Guyatt GH, Busse JW. Values and preferences towards medical cannabis among people living with chronic pain: a mixed-methods systematic review. BMJ Open 2021; 11:e050831. [PMID: 34493521 PMCID: PMC8451285 DOI: 10.1136/bmjopen-2021-050831] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/24/2021] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE To explore values and preferences towards medical cannabis among people living with chronic pain. DESIGN Mixed-methods systematic review. DATA SOURCES We searched MEDLINE, EMBASE and PsycINFO from inception to 17 March 2020. STUDY SELECTION Pairs of reviewers independently screened search results and included quantitative, qualitative and mixed-methods studies reporting values and preferences towards medical cannabis among people living with chronic pain. REVIEW METHODS We analysed data using meta-narrative synthesis (quantitative findings were qualitised) and tabulated review findings according to identified themes. We used the Grading of Recommendations Assessment, Development and Evaluation approach to assess certainty of evidence. RESULTS Of 1838 initial records, 15 studies proved eligible for review. High to moderate certainty evidence showed that patient's use of medical cannabis for chronic pain was influenced by both positive (eg, support from friends and family) and negative social factors (eg, stigma surrounding cannabis use). Most patients using medical cannabis favoured products with balanced ratios of tetrahydrocannabinol (THC) and cannabidiol (CBD), or high levels of CBD, but not high THC preparations. Many valued the effectiveness of medical cannabis for symptom management even when experiencing adverse events related to concentration, memory or fatigue. Reducing use of prescription medication was a motivating factor for use of medical cannabis, and concerns regarding addiction, losing control or acting strangely were disincentives. Out-of-pocket costs were a barrier, whereas legalisation of medical cannabis improved access and incentivised use.Low to very low certainty evidence suggested highly variable values towards medical cannabis among people living with chronic pain. Individuals with pain related to life-limiting disease were more willing to use medical cannabis, and preferred oral over inhaled administration. CONCLUSIONS Our findings highlight factors that clinicians should consider when discussing medical cannabis. The variability of patients' values and preferences emphasise the need for shared decision making when considering medical cannabis for chronic pain.
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Affiliation(s)
- Linan Zeng
- Pharmacy Department/Evidence-based Pharmacy Center, West China Second University Hospital, Chengdu, Sichuan, China
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada
| | - Lyubov Lytvyn
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada
| | - Xiaoqin Wang
- Michael G. DeGroote Institute for Pain Research and Care, McMaster University, Hamilton, Ontario, Canada
| | - Natasha Kithulegoda
- Institute for Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada
- Women's College Institute for Health System Solutions and Virtual Care, Women's College Hospital, Toronto, Ontario, Canada
| | - Silvana Agterberg
- Ferkauf Graduate School of Psychology, Yeshiva University, New York, New York, USA
| | - Yaad Shergill
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada
| | - Meisam Abdar Esfahani
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada
| | - Anja Fog Heen
- Department of Medicine, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Thomas Agoritsas
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada
- Division of General Internal Medicine & Division of Clinical Epidemiology, University Hospitals of Geneva, Geneva, Switzerland
| | - Gordon H Guyatt
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada
| | - Jason W Busse
- Department of Health Research Methods, Evidence & Impact, McMaster University, Hamilton, Ontario, Canada
- The Michael G. DeGroote Centre for Medicinal Cannabis Research, McMaster University, Hamilton, Ontario, Canada
- Department of Anesthesia, McMaster University, Hamilton, Ontario, Canada
- The Michael G. DeGroote National Pain Centre, McMaster University, Hamilton, Ontario, Canada
- Chronic Pain Centre of Excellence for Canadian Veterans, Hamilton, Ontario, Canada
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92
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Furrer D, Kröger E, Marcotte M, Jauvin N, Bélanger R, Ware M, Foldes-Busque G, Aubin M, Pluye P, Dionne CE. Cannabis against chronic musculoskeletal pain: a scoping review on users and their perceptions. J Cannabis Res 2021; 3:41. [PMID: 34481519 PMCID: PMC8418709 DOI: 10.1186/s42238-021-00096-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Accepted: 08/10/2021] [Indexed: 12/03/2022] Open
Abstract
Background Chronic musculoskeletal pain (CMP) may lead to reduced physical function and is the most common cause of chronic non-cancer pain. Currently, the pharmacotherapeutic options against CMP are limited and frequently consist of pain management with non-steroidal anti-inflammatories, gabapentinoids, or opioids, which carry major adverse effects. Although the effectiveness of medical cannabis (MC) for CMP still lacks solid evidence, several patients suffering from it are exploring this therapeutic option with their physicians. Objectives Little is known about patients’ perceptions of their MC treatment for CMP. We aimed to increase this knowledge, useful for healthcare professionals and patients considering this treatment, by conducting a scoping literature review, following guidance by Arksey and O’Malley, to describe the views and perceptions of adult patients who had consumed MC to relieve chronic CMP. Methods Databases (PUBMED, EMBASE, Web of Science) and websites were searched using combinations of controlled and free vocabulary. All studies and study designs reporting on patients’ perceptions regarding MC against CMP were considered. Studies had to include adult patients reporting qualitatively or quantitatively, i.e., through questionnaires, on MC use to treat CMP or other non-cancer pain, since studies reporting exclusively on perceptions regarding CMP were very rare. Study characteristics were extracted and limitations of the study quality were assessed. The review includes patients’ demographic characteristics, patterns of MC use, perceived positive and negative effects, use of alcohol or other drugs, reported barriers to CM use, and funding sources of the studies. Results Participants of the 49 included studies reported that MC use helped them to reduce CMP and other chronic non-cancer pain, with only minor adverse effects, and some reported improved psychological well-being. In the included studies, men represent between 18 and 88% of the subjects. The mean age of participants in these studies (42/49) varied between 28.4 and 62.8 years old. The most common route of administration is inhalation. Conclusion MC users suffering from CMP or other chronic non-cancer pain perceived more benefits than harms. However, the information from these studies has several methodological limitations and results are exploratory. These user-reported experiences must thus be examined by well-designed and methodologically sound clinical or observational studies, particularly regarding CMP, where reports are very scarce. Supplementary Information The online version contains supplementary material available at 10.1186/s42238-021-00096-8.
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Affiliation(s)
- Daniela Furrer
- Centre d'excellence sur le vieillissement de Québec (CEVQ), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale-Nationale (CIUSSSCN), Québec, QC, Canada.,Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada
| | - Edeltraut Kröger
- Centre d'excellence sur le vieillissement de Québec (CEVQ), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale-Nationale (CIUSSSCN), Québec, QC, Canada. .,Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada. .,Faculty of Pharmacy, Université Laval, Québec, QC, Canada. .,Hôpital du Saint-Sacrement, 1050 Chemin Ste-Foy, room L2-30, Québec, QC, G1S 4L8, Canada.
| | - Martine Marcotte
- Centre d'excellence sur le vieillissement de Québec (CEVQ), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale-Nationale (CIUSSSCN), Québec, QC, Canada
| | - Nathalie Jauvin
- Centre d'excellence sur le vieillissement de Québec (CEVQ), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale-Nationale (CIUSSSCN), Québec, QC, Canada
| | - Richard Bélanger
- Faculty of Pharmacy, Université Laval, Québec, QC, Canada.,Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Mark Ware
- Faculty of Medicine, McGill University, Montréal, QC, Canada
| | - Guillaume Foldes-Busque
- School of Psychology, Université Laval, Québec, QC, Canada.,Research Centre of the Centre Intégré de Santé et de Services Sociaux (CISSS) de Chaudière-Appalaches, Lévis, QC, Canada
| | - Michèle Aubin
- Centre d'excellence sur le vieillissement de Québec (CEVQ), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale-Nationale (CIUSSSCN), Québec, QC, Canada.,Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Faculty of Medicine, Université Laval, Québec, QC, Canada
| | - Pierre Pluye
- Faculty of Medicine, McGill University, Montréal, QC, Canada
| | - Clermont E Dionne
- Centre d'excellence sur le vieillissement de Québec (CEVQ), Centre Intégré Universitaire de Santé et de Services Sociaux de la Capitale-Nationale (CIUSSSCN), Québec, QC, Canada.,Centre de Recherche du CHU de Québec-Université Laval, Québec, QC, Canada.,Faculty of Medicine, Université Laval, Québec, QC, Canada
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93
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Dunford J, Lee AT, Morgan MM. Tetrahydrocannabinol (THC) Exacerbates Inflammatory Bowel Disease in Adolescent and Adult Female Rats. THE JOURNAL OF PAIN 2021; 22:1040-1047. [PMID: 33727159 DOI: 10.1016/j.jpain.2021.02.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/19/2020] [Accepted: 02/22/2021] [Indexed: 01/15/2023]
Abstract
Inflammatory Bowel Disease (IBD) is a life-long disorder that often begins between the ages of 15 and 30. Anecdotal reports suggest cannabinoids may be an effective treatment. This study sought to determine whether home cage wheel running is an effective method to assess IBD, and whether Tetrahydrocannabinol (THC), the primary psychoactive compound in cannabis, can restore wheel running depressed by IBD. Adolescent and adult female Sprague-Dawley rats were individually housed in a cage with a running wheel. Rats were injected with trinitrobenzene sulphonic acid (TNBS) into the rectum to induce IBD-like symptoms. One day later, both vehicle and TNBS treated rats were injected with a low dose of THC (0.32 mg/kg, s.c.) or vehicle. Administration of TNBS depressed wheel running in adolescent and adult rats. No antinociceptive effect of THC was evident when administered 1 day after TNBS. In fact, administration of THC prolonged TNBS-induced depression of wheel running for over 5 days in adolescent and adult rats. These results show that home cage wheel running is depressed by TNBS-induced IBD, making it a useful tool to evaluate the behavioral consequences of IBD, and that administration of THC, instead of producing antinociception, exacerbates TNBS-induced IBD. PERSPECTIVE: This article advances research on inflammatory bowel disease in two important ways: 1) Home cage wheel running is a new and sensitive tool to assess the behavioral consequences of IBD in adolescent and adult rats; and 2) Administration of the cannabinoid THC exacerbates the negative behavioral effects of IBD.
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Affiliation(s)
- Jeremy Dunford
- Department of Psychology, Washington State University Vancouver, Vancouver, WA
| | - Andrea T Lee
- Department of Psychology, Washington State University Vancouver, Vancouver, WA
| | - Michael M Morgan
- Department of Psychology, Washington State University Vancouver, Vancouver, WA.
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94
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Brown JD, Rivera Rivera KJ, Hernandez LYC, Doenges MR, Auchey I, Pham T, Goodin AJ. Natural and Synthetic Cannabinoids: Pharmacology, Uses, Adverse Drug Events, and Drug Interactions. J Clin Pharmacol 2021; 61 Suppl 2:S37-S52. [PMID: 34396558 DOI: 10.1002/jcph.1871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Accepted: 04/01/2021] [Indexed: 01/15/2023]
Abstract
The purpose of this narrative review is to describe the current use environment of both natural and synthetic cannabinoids while providing context for cannabinoid chemistry and pharmacology. In addition to a long history of recreational and nonmedical use, natural cannabinoids are increasingly used as prescription products, through medical cannabis programs, and as consumer health products. Despite anecdotal safety evidence, cannabis and cannabinoids are pharmacologically complex and pose risks for adverse drug events and drug-drug interactions. Synthetic cannabinoids, particularly agonists of cannabinoid receptors, are more potent than natural cannabinoids and can lead to more severe reactions and medical emergencies. This review provides a summary of approved uses and an overview of mechanisms of action for adverse drug events with natural and synthetic cannabinoids. Clinical considerations for special populations that may be at heightened risk for drug-drug interactions and adverse drug events while using natural or synthetic cannabinoids are examined, and recommendations are provided.
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Affiliation(s)
- Joshua D Brown
- Center for Drug Evaluation & Safety, University of Florida, Gainesville, Florida, USA.,Consortium for Medical Marijuana Clinical Outcomes Research, University of Florida, Gainesville, Florida, USA.,Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, Florida, USA
| | | | | | - Matthew R Doenges
- University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - India Auchey
- University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - Thanh Pham
- University of Florida College of Pharmacy, Gainesville, Florida, USA
| | - Amie J Goodin
- Center for Drug Evaluation & Safety, University of Florida, Gainesville, Florida, USA.,Consortium for Medical Marijuana Clinical Outcomes Research, University of Florida, Gainesville, Florida, USA.,Department of Pharmaceutical Outcomes & Policy, University of Florida College of Pharmacy, Gainesville, Florida, USA
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95
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Søgaard TF, Lerkkanen T. Overview: Exploring the onto-politics of cannabis. NORDIC STUDIES ON ALCOHOL AND DRUGS 2021; 38:321-328. [PMID: 35308111 PMCID: PMC8899052 DOI: 10.1177/14550725211025847] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 05/31/2021] [Indexed: 11/15/2022] Open
Abstract
The composition, use, policies, and the societal position of cannabis are
changing and diversifying internationally. Cannabis has emerged as an
object of much controversy and is subject to varying forms of
regulation. Its role and regulation are also debated in the Nordic
countries. To shed light on such developments, this special issue sets
out to explore how the phenomenon of cannabis, and related policies
and subjectivities, are currently made,
unmade, and transformed in
multiple ways through discourses, practices, and materiality, and with
different consequences.
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96
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Silva MH. Chlorpyrifos and Δ 9 Tetrahydrocannabinol exposure and effects on parameters associated with the endocannabinoid system and risk factors for obesity. Curr Res Toxicol 2021; 2:296-308. [PMID: 34467221 PMCID: PMC8384771 DOI: 10.1016/j.crtox.2021.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/26/2021] [Accepted: 08/02/2021] [Indexed: 12/15/2022] Open
Abstract
Marilyn Silva. Retired from a career in toxicology and risk assessment. Increased childhood and adult obesity are associated with chlorpyrifos (CPF), an organophosphate pesticide. Cannabis (Δ9Tetrahydrocannabinol: Δ9THC) use has increased globally with legalization. CPF applications on cannabis crops lacks federally regulated tolerances and may pose health risks through exposure during development and in adulthood. Both CPF and Δ9THC affect the endocannabinoid system (eCBS), a regulator of appetite, energy balance, and gut microbiota, which, if disrupted, increases risk for obesity and related diseases. CPF inhibits eCB metabolism and Δ9THC is a partial agonist/antagonist at the cannabinoid receptor (CB1R). Effects of each on obesogenic parameters were examined via literature search. Male rodents with CPF exposure showed increased body weights, dysbiosis, inflammation and oxidative stress, potentially associated with increased eCBs acting through the gut-microbiota-adipose-brain regulatory loop. Δ9THC generally decreased body weights via partial agonism at the CB1R, lowering levels of eCBs. Dysbiosis and/or oxidative stress associated inflammation occurred with CPF, but these parameters were not tested with Δ9THC. Database deficiencies included limited endpoints to compare between chemicals/age-groups, inter-study variables (dose ranges, dosing vehicle, rodent strain, treatment duration, etc.). CPF and Δ9THC were not tested together, but human co-chemical effects would depend on exposure ratio, subject age, exposure duration, and health status, among others. An overriding concern is that both chemicals are well-documented developmental neurotoxins in addition to their low dose effects on energy balance. A co-exposure risk assessment is warranted with increased use and lack of federal CPF regulation on cannabis.
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Affiliation(s)
- Marilyn H. Silva
- Retired from a career in toxicology and risk assessment 2437, Evenstar Lane, Davis, CA 95616, United States
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97
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Kvamme SL, Pedersen MM, Rømer Thomsen K, Thylstrup B. Exploring the use of cannabis as a substitute for prescription drugs in a convenience sample. Harm Reduct J 2021; 18:72. [PMID: 34246279 PMCID: PMC8272272 DOI: 10.1186/s12954-021-00520-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 06/24/2021] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND The use of cannabis as medicine (CaM) both prescribed and non-prescribed has increased markedly in the last decade, mirrored in a global shift in cannabis policy towards a more permissive stance. There is some evidence that cannabis functions as a substitute for prescription drugs, particularly opioids; however, more knowledge is needed on the motives of substitution users, their patterns of use, and perceived effects of substitution use. AIMS To explore who substitutes prescription drugs with cannabis, the type of prescription drugs substituted and the type of cannabis used, and the impact that substitution with cannabis has on prescription drug use as well as the motives for substitution in terms of experienced effects and side effects. METHODS A self-selected convenience sample was recruited through social media, public media, and patient organizations to take part in an anonymous online survey. Inclusion criteria were 18 years or older and use of cannabis (prescribed or non-prescribed) with a medical purpose. RESULTS The final sample included 2.841 respondents of which the majority (91%) used non-prescribed cannabis, and more than half (54.6%) had used CaM with the purpose of replacing a prescribed drug. Compared to non-substitution users, substitution users were more likely to be women and to use CaM in the treatment of chronic pain and other somatic conditions. Pain medication (67.2%), antidepressants (24.5%), and arthritis medication (20.7%) were the most common types of drugs replaced with CaM. Among substitution users, 38.1% reported termination of prescription drug use, and 45.9% a substantial decrease in prescription drug use. The most frequent type of cannabis used as a substitute was CBD-oil (65.2%), followed by 'hash, pot or skunk' (36.6%). More than half (65.8%) found CaM much more effective compared to prescription drugs, and 85.5% that the side effects associated with prescription drug use were much worse compared to use of CaM. CONCLUSION CaM is frequently used as a substitute for prescription drugs, particularly opioids. More research is needed on the long-term consequences of use of CaM, including the impact from low and high THC cannabis products on specific somatic and mental health conditions.
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Affiliation(s)
- Sinikka L Kvamme
- Center for Alcohol and Drug Research, Aarhus BSS, Aarhus University, Building 1322. Bartholins Allé 10, 8000, Aarhus C, Denmark.
| | - Michael M Pedersen
- Center for Alcohol and Drug Research, Aarhus BSS, Aarhus University, Building 1322. Bartholins Allé 10, 8000, Aarhus C, Denmark
| | - Kristine Rømer Thomsen
- Center for Alcohol and Drug Research, Aarhus BSS, Aarhus University, Building 1322. Bartholins Allé 10, 8000, Aarhus C, Denmark
| | - Birgitte Thylstrup
- Center for Alcohol and Drug Research, Aarhus BSS, Aarhus University, Artillerivej 90, 2. Floor, 2300, Copenhagen S, Denmark
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98
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An Exploration of Self-Reported Medicinal Cannabis Use Among a Sample of Eastern Canadian Postsecondary Students. J Behav Health Serv Res 2021; 49:487-499. [PMID: 34240307 DOI: 10.1007/s11414-021-09763-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/13/2021] [Indexed: 01/29/2023]
Abstract
In October 2018, prior to the legalization of cannabis in Canada, a survey was completed by 1050 Memorial University of Newfoundland students. Both descriptive quantitative and thematic qualitative data analyzes were used. Approximately 16% of the sample reported ever using cannabis for medicinal purposes (n=175), with only 16.6% of medicinal users reporting authorization by a healthcare provider (HCP). The majority (80.2%) were aware of possible side effects of cannabis. Prior personal experience (65.3%) and peer influence (59.5%) informed participants' medicinal use. Approximately 40% reported having replaced/reduced prescribed medication. Roughly 60% of medicinal users had not disclosed their use to their HCP. Consistent with previous studies, medicinal cannabis use among postsecondary students appears to be largely motivated for mental health related conditions and is grounded in personal experience versus evidence-based guidelines. There is a need for increased communication between HCPs and patients to promote lower-risk use among medicinal cannabis users.
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99
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Arout CA, Haney M, Herrmann ES, Bedi G, Cooper ZD. A placebo-controlled investigation of the analgesic effects, abuse liability, safety and tolerability of a range of oral cannabidiol doses in healthy humans. Br J Clin Pharmacol 2021; 88:347-355. [PMID: 34223660 DOI: 10.1111/bcp.14973] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 01/10/2023] Open
Abstract
AIMS Preclinical studies demonstrate that cannabidiol (CBD) elicits an antinociceptive response in animal models of neuropathic pain; in humans, limited data are available to support such analgesic effects. Few studies have examined CBD's analgesic effects when administered without other compounds, and little is known regarding dose-dependent effects in noncannabis users. METHODS This double-blind, placebo-controlled, within-subject outpatient clinical laboratory study sought to determine the analgesic effects, abuse liability, safety and tolerability of acute CBD (0, 200, 400 and 800 mg orally) in healthy noncannabis-using volunteers (n = 17; 8 men, 9 women). Outcomes included experimental pain threshold and pain tolerance using the cold pressor test (CPT), subjective ratings of CPT painfulness and bothersomeness, subjective ratings of abuse liability and mood, and cardiovascular measures, which were assessed at baseline and several time points after drug administration. Data analyses included repeated measures analysis of variance (ANOVA) with planned comparisons. RESULTS CBD failed to consistently affect pain threshold and tolerance in the CPT relative to placebo. All doses of CBD increased ratings of painfulness compared to placebo (P < .01). Further, CBD had dose-dependent, modest effects on mood and subjective drug effects associated with abuse liability. Oral CBD was safe and well tolerated, producing small decreases in blood pressure (P < .01). CONCLUSION CBD did not elicit consistent dose-dependent analgesia and in fact increased pain on some measures. Future studies exploring CBD-induced pain relief should consider using a more extensive pain assessment paradigm in different participant populations.
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Affiliation(s)
- Caroline A Arout
- Division on Substance Use Disorders, New York Psychiatric Institute and Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA
| | - Margaret Haney
- Division on Substance Use Disorders, New York Psychiatric Institute and Department of Psychiatry, Columbia University Irving Medical Center, New York, NY, USA
| | - Evan S Herrmann
- Division of Therapeutics and Medical Consequences, National Institute on Drug Abuse, USA
| | - Gillinder Bedi
- Centre for Youth Mental Health, The University of Melbourne and Substance Use Research Group, Melbourne, Australia
| | - Ziva D Cooper
- University of California, Los Angeles Cannabis Research Initiative, Jane & Terry Semel Institute for Neuroscience & Human Behavior, Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, Los Angeles, CA, USA.,Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine, University of California, Los Angeles, CA, USA
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100
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Vickstrom CR, Liu X, Liu S, Hu MM, Mu L, Hu Y, Yu H, Love SL, Hillard CJ, Liu QS. Role of endocannabinoid signaling in a septohabenular pathway in the regulation of anxiety- and depressive-like behavior. Mol Psychiatry 2021; 26:3178-3191. [PMID: 33093652 PMCID: PMC8060365 DOI: 10.1038/s41380-020-00905-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 09/17/2020] [Accepted: 10/01/2020] [Indexed: 12/21/2022]
Abstract
Enhancing endocannabinoid signaling produces anxiolytic- and antidepressant-like effects, but the neural circuits involved remain poorly understood. The medial habenula (MHb) is a phylogenetically-conserved epithalamic structure that is a powerful modulator of anxiety- and depressive-like behavior. Here, we show that a robust endocannabinoid signaling system modulates synaptic transmission between the MHb and its sole identified GABA input, the medial septum and nucleus of the diagonal band (MSDB). With RNAscope in situ hybridization, we demonstrate that key enzymes that synthesize or degrade the endocannabinoids 2-arachidonylglycerol (2-AG) or anandamide are expressed in the MHb and MSDB, and that cannabinoid receptor 1 (CB1) is expressed in the MSDB. Electrophysiological recordings in MHb neurons revealed that endogenously-released 2-AG retrogradely depresses GABA input from the MSDB. This endocannabinoid-mediated depolarization-induced suppression of inhibition (DSI) was limited by monoacylglycerol lipase (MAGL) but not by fatty acid amide hydrolase. Anatomic and optogenetic circuit mapping indicated that MSDB GABA neurons monosynaptically project to cholinergic neurons of the ventral MHb. To test the behavioral significance of this MSDB-MHb endocannabinoid signaling, we induced MSDB-specific knockout of CB1 or MAGL via injection of virally-delivered Cre recombinase into the MSDB of Cnr1loxP/loxP or MgllloxP/loxP mice. Relative to control mice, MSDB-specific knockout of CB1 or MAGL bidirectionally modulated 2-AG signaling in the ventral MHb and led to opposing effects on anxiety- and depressive-like behavior. Thus, depression of synaptic GABA release in the MSDB-ventral MHb pathway may represent a potential mechanism whereby endocannabinoids exert anxiolytic and antidepressant-like effects.
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Affiliation(s)
- Casey R Vickstrom
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
| | - Xiaojie Liu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Shuai Liu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Meng-Ming Hu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Lianwei Mu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Ying Hu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Hao Yu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Santidra L Love
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Cecilia J Hillard
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Qing-Song Liu
- Department of Pharmacology and Toxicology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA.
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