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Hayat A, Piper BJ. Characteristics of Dispensary Patients that Limit Alcohol after Initiating Cannabis. J Psychoactive Drugs 2020; 52:145-152. [PMID: 31813342 PMCID: PMC7275884 DOI: 10.1080/02791072.2019.1694199] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/31/2019] [Accepted: 09/23/2019] [Indexed: 12/21/2022]
Abstract
Many patients have reported that they decrease their use of opioids after starting medical cannabis (MC) but less is known for alcohol. The objective of this exploratory study was to identify any factors which differentiate alcohol abaters from those that do not modify their alcohol use after starting MC (non-abaters). Comparisons were made to identify any demographic, dosing, or health history characteristics which differentiated alcohol abaters (N = 47) from non-abaters (N = 65). Respondents selected from among a list of 37 diseases/health conditions (e.g. diabetes, sleep disorders). Abaters and non-abaters were indistinguishable in terms of sex, age, or prior drug history. A greater percentage of abaters (59.6%) than non-abaters (40.6%, p < .05) reported using MC two or more times per day. Abaters were more likely to be employed (68.1%) than non-abaters (51.1%, p < .05). Abaters also reported having significantly more health conditions and diseases (3.3 ± 2.0) than non-abaters (2.4 ± 1.4, p < .05). This small study offers some insights into the profile of patients whose self-reported alcohol intake decreased following initiation of MC. Additional prospective or controlled research into the alcohol abatement phenomenon following MC may be warranted.
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Affiliation(s)
- Assad Hayat
- Geisinger Commonwealth School of Medicine, Scranton, PA 18509 USA
| | - Brian J. Piper
- Geisinger Commonwealth School of Medicine, Scranton, PA 18509 USA
- Center for Pharmacy Innovation and Outcomes, Geisinger Precision Health Center, Forty Fort, PA 18704 USA
- Neuroscience Program, Bowdoin College, Brunswick, ME 04011 USA
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Kosiba JD, Mitzel LD, Zale EL, Zvolensky MJ, Ditre JW. A Preliminary Study of Associations between Discomfort Intolerance, Pain Severity/Interference, and Frequency of Cannabis Use among Individuals with Chronic Pain. ADDICTION RESEARCH & THEORY 2020; 28:76-81. [PMID: 33041738 PMCID: PMC7540627 DOI: 10.1080/16066359.2019.1590557] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Cannabis use is more common among individuals with chronic pain, and is often used to relieve physical discomfort. However, little is known about factors that are associated with cannabis use among individuals with chronic pain, and there is reason to suspect that perceptions of discomfort intolerance (DI) play an important role in pain-cannabis relations. The goal of this study was to conduct an initial examination of perceived DI, pain severity, and pain-related interference in relation to frequency of cannabis use among individuals with chronic pain. Specifically, we hypothesized that pain severity/interference and factors of DI (avoidance and intolerance), would each be positively associated with cannabis use frequency. Participants (N = 109; 44% male; M age = 27) endorsed chronic pain and at least one instance of lifetime cannabis use. Most participants characterized their chronic pain as high intensity and low disability, and the two most commonly reported frequencies of cannabis use were "less than monthly" (n = 38), and "daily/almost daily" (n = 32). Results indicated that discomfort avoidance (but not discomfort intolerance), pain severity, and pain-related interference were each independently and positively associated with frequency of cannabis use. These preliminary findings suggest that continued examination of perceived discomfort avoidance in relation to co-occurring pain and cannabis use is warranted. Future research should replicate these results among treatment-seeking pain patients who are prescribed medical cannabis.
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Affiliation(s)
| | - Luke D. Mitzel
- Department of Psychology, Syracuse University, Syracuse, NY
| | - Emily L. Zale
- Department of Psychology, Binghamton University, Binghamton, NY
| | - Michael J. Zvolensky
- Department of Psychology, University of Houston, Houston, TX
- Department of Behavioral Science, The University of Texas MD Anderson Cancer Center, Houston, TX
- Health Institute, University of Houston, Houston TX
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Jansen C, Shimoda L, Kawakami J, Ang L, Bacani A, Baker J, Badowski C, Speck M, Stokes A, Small-Howard A, Turner H. Myrcene and terpene regulation of TRPV1. Channels (Austin) 2019; 13:344-366. [PMID: 31446830 PMCID: PMC6768052 DOI: 10.1080/19336950.2019.1654347] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 08/05/2019] [Accepted: 08/06/2019] [Indexed: 01/30/2023] Open
Abstract
Nociceptive Transient Receptor Potential channels such as TRPV1 are targets for treating pain. Both antagonism and agonism of TRP channels can promote analgesia, through inactivation and chronic desensitization. Since plant-derived mixtures of cannabinoids and the Cannabis component myrcene have been suggested as pain therapeutics, we screened terpenes found in Cannabis for activity at TRPV1. We used inducible expression of TRPV1 to examine TRPV1-dependency of terpene-induced calcium flux responses. Terpenes contribute differentially to calcium fluxes via TRPV1 induced by Cannabis-mimetic cannabinoid/terpenoid mixtures. Myrcene dominates the TRPV1-mediated calcium responses seen with terpenoid mixtures. Myrcene-induced calcium influx is inhibited by the TRPV1 inhibitor capsazepine and Myrcene elicits TRPV1 currents in the whole-cell patch-clamp configuration. TRPV1 currents are highly sensitive to internal calcium. When Myrcene currents are evoked, they are distinct from capsaicin responses on the basis of Imax and their lack of shift to a pore-dilated state. Myrcene pre-application and residency at TRPV1 appears to negatively impact subsequent responses to TRPV1 ligands such as Cannabidiol, indicating allosteric modulation and possible competition by Myrcene. Molecular docking studies suggest a non-covalent interaction site for Myrcene in TRPV1 and identifies key residues that form partially overlapping Myrcene and Cannabidiol binding sites. We identify several non-Cannabis plant-derived sources of Myrcene and other compounds targeting nociceptive TRPs using a data mining approach focused on analgesics suggested by non-Western Traditional Medical Systems. These data establish TRPV1 as a target of Myrcene and suggest the therapeutic potential of analgesic formulations containing Myrcene.
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Affiliation(s)
- C. Jansen
- Laboratory of Immunology and Signal Transduction, Chaminade University, Honolulu, HI, USA
| | - L.M.N Shimoda
- Laboratory of Immunology and Signal Transduction, Chaminade University, Honolulu, HI, USA
| | - J.K. Kawakami
- Department of Chemistry, Chaminade University, Honolulu, HI, USA
| | - L. Ang
- Undergraduate Program in Biology, Chaminade University, Honolulu, HI, USA
| | - A.J. Bacani
- Undergraduate Program in Biology, Chaminade University, Honolulu, HI, USA
| | - J.D. Baker
- Department of Biology, Chaminade University, Honolulu, HI, USA
| | - C. Badowski
- Laboratory of Experimental Medicine, John A. Burns School of Medicine, Honolulu, HI, USA
| | - M. Speck
- Laboratory of Immunology and Signal Transduction, Chaminade University, Honolulu, HI, USA
| | - A.J. Stokes
- Laboratory of Experimental Medicine, John A. Burns School of Medicine, Honolulu, HI, USA
| | | | - H Turner
- Laboratory of Immunology and Signal Transduction, Chaminade University, Honolulu, HI, USA
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Exploring cancer survivors’ attitudes, perceptions, and concerns about using medical cannabis for symptom and side effect management: A qualitative focus group study. Complement Ther Med 2019; 47:102204. [DOI: 10.1016/j.ctim.2019.102204] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 08/24/2019] [Accepted: 09/29/2019] [Indexed: 01/28/2023] Open
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Cannabis-Based Medicines and Medical Cannabis in Rheumatic Diseases: A Treasure Chest or Pandora’s box. CURRENT TREATMENT OPTIONS IN RHEUMATOLOGY 2019. [DOI: 10.1007/s40674-019-00130-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Cannabis Use, a Self-Management Strategy Among Australian Women With Endometriosis: Results From a National Online Survey. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2019; 42:256-261. [PMID: 31722852 DOI: 10.1016/j.jogc.2019.08.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 01/22/2023]
Abstract
OBJECTIVE This study sought to determine the prevalence, tolerability, and self-reported effectiveness of cannabis in women with endometriosis. METHODS A cross-sectional online survey was conducted between October and December 2017. Recruitment targeted women with endometriosis through social media postings from endometriosis advocacy groups. Women aged 18 to 45, living in Australia, and with surgically confirmed endometriosis were eligible to participate. Survey questions investigated the types of self-management used, change in symptoms or medication use, costs, and adverse events. RESULTS A total of 484 responses were included for analysis, with 76% of the women reporting the use of general self-management strategies within the last 6 months. Of those using self-management, 13% reported using cannabis for symptom management. Self-reported effectiveness in pain reduction was high (7.6 of 10), with 56% also able to reduce pharmaceutical medications by at least half. Women reported the greatest improvements in sleep and in nausea and vomiting. Adverse effects were infrequent (10%) and minor. CONCLUSION Australian law currently requires legal medicinal cannabis use to follow specific, regulated pathways that limit prescription by this method; however, self-reported illicit use of cannabis remains relatively common in Australian women with endometriosis. Women report good efficacy of cannabis in reducing pain and other symptoms, with few adverse effects reported. Further clinical research is warranted to determine the effectiveness of cannabis in managing endometriosis symptoms. In locations where medicinal cannabis is more accessible, there remains a paucity of evidence for its clinical efficacy with endometriosis-associated symptoms.
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Boehnke KF, Scott JR, Litinas E, Sisley S, Clauw DJ, Goesling J, Williams DA. Cannabis Use Preferences and Decision-making Among a Cross-sectional Cohort of Medical Cannabis Patients with Chronic Pain. THE JOURNAL OF PAIN 2019; 20:1362-1372. [DOI: 10.1016/j.jpain.2019.05.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 04/03/2019] [Accepted: 05/02/2019] [Indexed: 01/14/2023]
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Lake S, Walsh Z, Kerr T, Cooper ZD, Buxton J, Wood E, Ware MA, Milloy MJ. Frequency of cannabis and illicit opioid use among people who use drugs and report chronic pain: A longitudinal analysis. PLoS Med 2019; 16:e1002967. [PMID: 31743343 PMCID: PMC6863529 DOI: 10.1371/journal.pmed.1002967] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 10/16/2019] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Ecological research suggests that increased access to cannabis may facilitate reductions in opioid use and harms, and medical cannabis patients describe the substitution of opioids with cannabis for pain management. However, there is a lack of research using individual-level data to explore this question. We aimed to investigate the longitudinal association between frequency of cannabis use and illicit opioid use among people who use drugs (PWUD) experiencing chronic pain. METHODS AND FINDINGS This study included data from people in 2 prospective cohorts of PWUD in Vancouver, Canada, who reported major or persistent pain from June 1, 2014, to December 1, 2017 (n = 1,152). We used descriptive statistics to examine reasons for cannabis use and a multivariable generalized linear mixed-effects model to estimate the relationship between daily (once or more per day) cannabis use and daily illicit opioid use. There were 424 (36.8%) women in the study, and the median age at baseline was 49.3 years (IQR 42.3-54.9). In total, 455 (40%) reported daily illicit opioid use, and 410 (36%) reported daily cannabis use during at least one 6-month follow-up period. The most commonly reported therapeutic reasons for cannabis use were pain (36%), sleep (35%), stress (31%), and nausea (30%). After adjusting for demographic characteristics, substance use, and health-related factors, daily cannabis use was associated with significantly lower odds of daily illicit opioid use (adjusted odds ratio 0.50, 95% CI 0.34-0.74, p < 0.001). Limitations of the study included self-reported measures of substance use and chronic pain, and a lack of data for cannabis preparations, dosages, and modes of administration. CONCLUSIONS We observed an independent negative association between frequent cannabis use and frequent illicit opioid use among PWUD with chronic pain. These findings provide longitudinal observational evidence that cannabis may serve as an adjunct to or substitute for illicit opioid use among PWUD with chronic pain.
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Affiliation(s)
- Stephanie Lake
- British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
- School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
| | - Zach Walsh
- Department of Psychology, University of British Columbia, Kelowna, British Columbia, Canada
| | - Thomas Kerr
- British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Ziva D. Cooper
- Department of Psychiatry and Biobehavioral Sciences, University of California, Los Angeles, Los Angeles, California, United States of America
| | - Jane Buxton
- School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
- British Columbia Centre for Disease Control, Vancouver, British Columbia, Canada
| | - Evan Wood
- British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
| | - Mark A. Ware
- Department of Family Medicine, McGill University, Montreal, Québec, Canada
- Department of Anesthesia, McGill University, Montreal, Québec, Canada
| | - M. J. Milloy
- British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
- Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
- * E-mail:
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Yau JC, Yu SM, Panenka WJ, Pearce H, Gicas KM, Procyshyn RM, MacCallum C, Honer WG, Barr AM. Characterization of mental health in cannabis dispensary users, using structured clinical interviews and standardized assessment instruments. BMC Psychiatry 2019; 19:335. [PMID: 31675939 PMCID: PMC6825348 DOI: 10.1186/s12888-019-2324-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Accepted: 10/15/2019] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Cannabis is commonly used for its medical properties. In particular, cannabis is purported to have beneficial effects on a wide range of neuropsychiatric conditions. Studies assessing mental health in cannabis dispensary users typically evaluate symptoms using self-report check lists, which provide limited information about symptom severity, and whether subjects meet criteria for a psychiatric diagnosis. There is, therefore, a need for studies which assess mental health in dispensary users with standardized and well validated scientific instruments, such as those used in clinical drug trials. METHODS One hundred medical cannabis users were recruited from a community dispensary. All subjects completed a structured clinical interview with the Mini-International Neuropsychiatric Interview (MINI). Subjects also completed the Perceived Stress Scale-10, PROMIS Fatigue Scale, PROMIS Sleep Disturbance Scale, Beck Depression Inventory, the Patient Health Questionnaire-15 and the Brief Pain Inventory. Details about cannabis use were also recorded. RESULTS Lifetime prevalence of mental illness in this cohort was high, and a large proportion of subjects endorsed psychological symptoms. The proportion of subjects who met criteria for classification of a current psychiatric disorder was low for mood disorders, but high for anxiety disorders and substance abuse/dependence. Cannabis use differed between the main psychiatric conditions. CONCLUSIONS The present results indicate that rates of mental illness may be high in medical cannabis dispensary users. Use of structured clinical assessments combined with standardized symptom severity questionnaires provide a feasible way to provide a more rigorous and detailed evaluation of conditions and symptoms in this population.
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Affiliation(s)
- Jade C. Yau
- 0000 0001 2288 9830grid.17091.3eDepartment of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, 2176 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3 Canada
| | - Shu Min Yu
- 0000 0001 2288 9830grid.17091.3eDepartment of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, 2176 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3 Canada
| | - William J. Panenka
- 0000 0001 2288 9830grid.17091.3eDepartment of Psychiatry, University of British Columbia, Vancouver, British Columbia Canada
| | - Hadley Pearce
- 0000 0001 2288 9830grid.17091.3eDepartment of Psychiatry, University of British Columbia, Vancouver, British Columbia Canada
| | - Kristina M. Gicas
- 0000 0004 1936 9430grid.21100.32Department of Psychology, York University, Toronto, Ontario Canada
| | - Ric M. Procyshyn
- 0000 0001 2288 9830grid.17091.3eDepartment of Psychiatry, University of British Columbia, Vancouver, British Columbia Canada
| | - Caroline MacCallum
- 0000 0001 2288 9830grid.17091.3eDepartment of Medicine, University of British Columbia, Vancouver, British Columbia Canada
| | - William G. Honer
- 0000 0001 2288 9830grid.17091.3eDepartment of Psychiatry, University of British Columbia, Vancouver, British Columbia Canada
| | - Alasdair M. Barr
- 0000 0001 2288 9830grid.17091.3eDepartment of Anesthesiology, Pharmacology & Therapeutics, University of British Columbia, 2176 Health Sciences Mall, Vancouver, British Columbia V6T 1Z3 Canada
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Bourke JA, Catherwood VJ, Nunnerley JL, Martin RA, Levack WMM, Thompson BL, Acland RH. Using cannabis for pain management after spinal cord injury: a qualitative study. Spinal Cord Ser Cases 2019; 5:82. [PMID: 31632740 PMCID: PMC6786415 DOI: 10.1038/s41394-019-0227-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 09/12/2019] [Indexed: 01/31/2023] Open
Abstract
Study design A descriptive qualitative study. Objectives To explore why individuals with spinal cord injury (SCI) choose to use cannabis to manage their pain and their experiences in doing so. Setting Community-dwelling adults with SCI in New Zealand. Methods Semi-structured interviews were conducted with individuals who had a SCI, experienced pain, and self-reported use of cannabis to manage their pain. Interviews were recorded, transcribed, and subject to thematic analysis. Results Eight individuals participated in this study. We interpreted six themes that captured the participants' perspectives regarding their choice to, and perceptions of, using cannabis to manage SCI pain. Participants were motivated to use cannabis when other pain management strategies had been ineffective and were well-informed, knowledgeable cannabis consumers. Participants reported cannabis reduced their pain quickly and enabled them to engage in activities of daily living and participate in life roles without the drowsiness of traditional prescribed pain medication. Despite the positive aspects, participants were concerned about the irregularity of supply and inconsistent dosage. Conclusions Findings show that cannabis is used to reduce pain after SCI and enable increased community participation. Findings suggest that future studies examining the efficacy of cannabinoids in managing pain include function and participation outcome measures rather than solely focusing on measuring pain intensity. Focusing on meaningful outcomes may contribute to a greater understanding of the experiences of people with SCI.
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Affiliation(s)
- John A. Bourke
- Burwood Academy of Independent Living, Christchurch, New Zealand
- Menzies Health Institute, Griffith University, Queensland, Australia
| | | | - Joanne L. Nunnerley
- Burwood Academy of Independent Living, Christchurch, New Zealand
- Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, New Zealand
| | - Rachelle A. Martin
- Burwood Academy of Independent Living, Christchurch, New Zealand
- Rehabilitation Teaching and Research Unit, Department of Medicine, University of Otago, Wellington, New Zealand
| | - William M. M. Levack
- Rehabilitation Teaching and Research Unit, Department of Medicine, University of Otago, Wellington, New Zealand
| | - Bronwyn L. Thompson
- Orthopaedic Surgery and Musculoskeletal Medicine, University of Otago, Christchurch, New Zealand
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Abstract
BACKGROUND Fibromyalgia is a chronic pain syndrome, characterized by chronic musculoskeletal pain, fatigue, and mood disturbances. There are nearly no data on the effect of medical cannabis (MC) treatment on patients with fibromyalgia. METHODS Data were obtained from the registries of 2 hospitals in Israel (Laniado Hospital and Nazareth Hospital) on patients with a diagnosis of fibromyalgia who were treated with MC. After obtaining patient consent, demographic, clinical, and laboratory parameters were documented. All the patients also completed the Revised Fibromyalgia Impact Questionnaire regarding the period before and after MC treatment. RESULTS Thirty patients were identified, and 26 patients were included in the study. There were 19 female patients (73%), and the mean age of the study group was 37.8 ± 7.6 years. The mean dosage of MC was 26 ± 8.3 g per month, and the mean duration of MC use was 10.4 ± 11.3 months. After commencing MC treatment, all the patients reported a significant improvement in every parameter on the questionnaire, and 13 patients (50%) stopped taking any other medications for fibromyalgia. Eight patients (30%) experienced very mild adverse effects. CONCLUSIONS Medical cannabis treatment had a significant favorable effect on patients with fibromyalgia, with few adverse effects.
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Anderson SP, Zylla DM, McGriff DM, Arneson TJ. Impact of Medical Cannabis on Patient-Reported Symptoms for Patients With Cancer Enrolled in Minnesota’s Medical Cannabis Program. J Oncol Pract 2019; 15:e338-e345. [DOI: 10.1200/jop.18.00562] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
PURPOSE: Minnesota’s medical cannabis program is unique, in that it routinely collects patient-reported scores on symptoms. This article focuses on changes in symptom severity reported by patients with cancer during their first 4 months of program participation. MATERIALS AND METHODS: Patients with cancer in Minnesota’s medical cannabis program reported symptoms (anxiety, lack of appetite, depression, disturbed sleep, fatigue, nausea, pain, and vomiting) at their worst over the last 24 hours before each medical cannabis purchase. Baseline scores on each of the eight symptoms were statistically compared with the average symptom scores reported in the first 4 months of program participation. Symptom scores were also calculated as percent change from baseline, with patients achieving and maintaining at least a 30% reduction in symptoms reported in this article. Patients also reported intensity of adverse effects. RESULTS: A significant reduction in scores was found across all symptoms when comparing baseline scores with the average score submitted within the first 4 months of program participation (all Ps < .001). The proportion of patients achieving 30% or greater symptom reduction within the first 4 months of program participation varied from 27% (fatigue) to 50% (vomiting), with a smaller proportion both achieving and maintaining those improvements. Adverse effects were reported in a small proportion of patients (10.5%). CONCLUSION: Patients with cancer enrolled in Minnesota’s medical cannabis program showed significant reduction across all eight symptoms assessed within 4 months of program participation. Medical cannabis was well tolerated, and some patients attained clinically meaningful and lasting levels of improvement.
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A Comprehensive Review of Cannabis in Patients with Cancer: Availability in the USA, General Efficacy, and Safety. Curr Oncol Rep 2019; 21:10. [DOI: 10.1007/s11912-019-0757-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Campbell G, Stockings E, Nielsen S. Understanding the evidence for medical cannabis and cannabis-based medicines for the treatment of chronic non-cancer pain. Eur Arch Psychiatry Clin Neurosci 2019; 269:135-144. [PMID: 30635715 DOI: 10.1007/s00406-018-0960-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Accepted: 11/21/2018] [Indexed: 12/18/2022]
Abstract
The use of medical cannabis and cannabis-based medicines has received increasing interest in recent years; with a corresponding surge in the number of studies and reviews conducted in the field. Despite this growth in evidence, the findings and conclusions of these studies have been inconsistent. In this paper, we outline the current evidence for medical cannabis and cannabis-based medicines in the treatment and management of chronic non-cancer pain. We discuss limitations of the current evidence, including limitations of randomised control trials in the field, limits on generalisability of previous findings and common issues such as problems with measurements of dose and type of cannabinoids. We discuss future directions for medicinal cannabinoid research, including addressing limitations in trial design; developing frameworks to monitor for use disorder and other unintended outcomes; and considering endpoints other than 30% or 50% reductions in pain severity.
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Affiliation(s)
- Gabrielle Campbell
- National Drug and Alcohol Research Centre (NDARC), Faculty of Medicine, UNSW Sydney, 22-32 King Street, Randwick, NSW, 2031, Australia.
| | - Emily Stockings
- National Drug and Alcohol Research Centre (NDARC), Faculty of Medicine, UNSW Sydney, 22-32 King Street, Randwick, NSW, 2031, Australia
| | - Suzanne Nielsen
- Monash Addiction Research Centre, Eastern Health Clinical School, Faculty of Medicine Nursing and Health Sciences, Monash University, Level 2, 5 Arnold Street, Box Hill, VIC, 3128, Australia
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Boehnke KF, Scott JR, Litinas E, Sisley S, Williams DA, Clauw DJ. Pills to Pot: Observational Analyses of Cannabis Substitution Among Medical Cannabis Users With Chronic Pain. THE JOURNAL OF PAIN 2019; 20:830-841. [PMID: 30690169 DOI: 10.1016/j.jpain.2019.01.010] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/22/2019] [Accepted: 01/23/2019] [Indexed: 10/27/2022]
Abstract
Chronic pain is common, costly, and challenging to treat. Many individuals with chronic pain have turned to cannabis as an alternative form of pain management. We report results from an ongoing, online survey of medical cannabis users with chronic pain nationwide about how cannabis affects pain management, health, and pain medication use. We also examined whether and how these parameters were affected by concomitant recreational use, and duration of use (novice: <1 year vs experienced: ≥1 year). There were 1,321 participants (59% female, 54% ≥50 years old) who completed the survey. Consistent with other observational studies, approximately 80% reported substituting cannabis for traditional pain medications (53% for opioids, 22% for benzodiazepines), citing fewer side effects and better symptom management as their rationale for doing so. Medical-only users were older (52 vs 47 years old; P < .0001), less likely to drink alcohol (66% vs 79%, P < .0001), and more likely to be currently taking opioids (21% vs 11%, P < .0001) than users with a combined recreational and medical history. Compared with novice users, experienced users were more likely to be male (64% vs 58%; P < .0001), take no concomitant pain medications (43% vs 30%), and report improved health (74% vs 67%; P = .004) with use. Given that chronic pain is the most common reason for obtaining a medical cannabis license, these results highlight clinically important differences among the changing population of medical cannabis users. More research is needed to better understand effective pain management regimens for medical cannabis users. Perspective: This article presents results that confirm previous clinical studies suggesting that cannabis may be an effective analgesic and potential opioid substitute. Participants reported improved pain, health, and fewer side effects as rationale for substituting. This article highlights how use duration and intentions for use affect reported treatment and substitution effects.
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Affiliation(s)
- Kevin F Boehnke
- Anesthesiology Department, University of Michigan Medical School, Ann Arbor, Michigan..
| | - J Ryan Scott
- Anesthesiology Department, University of Michigan Medical School, Ann Arbor, Michigan
| | | | | | - David A Williams
- Anesthesiology Department, University of Michigan Medical School, Ann Arbor, Michigan
| | - Daniel J Clauw
- Anesthesiology Department, University of Michigan Medical School, Ann Arbor, Michigan
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Zylla D, Steele G, Eklund J, Mettner J, Arneson T. Oncology Clinicians and the Minnesota Medical Cannabis Program: A Survey on Medical Cannabis Practice Patterns, Barriers to Enrollment, and Educational Needs. Cannabis Cannabinoid Res 2018; 3:195-202. [PMID: 30426072 PMCID: PMC6225592 DOI: 10.1089/can.2018.0029] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: Medical cannabis has been available in the State of Minnesota since July 2015 through the Minnesota Medical Cannabis Program (MMCP). Objectives: Our study aimed to delineate oncology providers' views on medical cannabis, identify barriers to patient enrollment, and assess clinicians' interest in a clinical trial of medical cannabis in patients with stage IV cancer. Methods: From June to August 2017, we distributed a 14-question survey to Minnesota oncology physicians, advanced practice nurses, and physician assistants who care for adults and children with cancer. Descriptive analyses for each question were provided for all survey respondents. Results: Of the 529 eligible survey participants, 153 (29%) responded to our survey; 68 respondents were registered with the MMCP. Most identified themselves as a medical oncologist or medical oncology nurse practitioner/physician assistant (n=125, 82%), and most practiced in a community setting (n=102, 67%). Overall, 65% of respondents supported the use of medical cannabis. Perceived cost and inadequate research were the highest barriers to MMCP patient enrollment. The lowest barriers included lack of health group support for allowing certification of patients and risk of social stigma. Of all respondents, 36% lacked confidence in discussing the risks and benefits of medical cannabis, and 85% wanted more education. Conclusions: Although support for cannabis use in the cancer setting is growing, significant barriers remain. This study illustrates a clear need to give clinicians both data and education to guide their discussions about the benefits, risks, and cost considerations of using medical cannabis for cancer-related symptoms.
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Affiliation(s)
- Dylan Zylla
- Park Nicollet Oncology Research, HealthPartners Institute, Frauenshuh Cancer Center, Minneapolis, Minnesota.,HealthPartners Institute, HealthPartners, Minneapolis, Minnesota
| | - Grant Steele
- Park Nicollet Oncology Research, HealthPartners Institute, Frauenshuh Cancer Center, Minneapolis, Minnesota.,HealthPartners Institute, HealthPartners, Minneapolis, Minnesota
| | - Justin Eklund
- Park Nicollet Oncology Research, HealthPartners Institute, Frauenshuh Cancer Center, Minneapolis, Minnesota.,HealthPartners Institute, HealthPartners, Minneapolis, Minnesota
| | - Jeanne Mettner
- HealthPartners Institute, HealthPartners, Minneapolis, Minnesota
| | - Tom Arneson
- Minnesota Department of Health, St. Paul, Minnesota
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The Consumption of Cannabis by Fibromyalgia Patients in Israel. PAIN RESEARCH AND TREATMENT 2018; 2018:7829427. [PMID: 30140459 PMCID: PMC6081591 DOI: 10.1155/2018/7829427] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 07/15/2018] [Indexed: 12/18/2022]
Abstract
Objective To report on the habits of cannabis consumption among fibromyalgia patients in Israel. Patients and Methods An Internet-based questionnaire was posted to three large fibromyalgia Facebook groups in our country. The questionnaire was anonymous and included demographic, clinical, and cannabis-related questions, including acquisition of a license for medical cannabis (MC) method and amount of cannabis consumption; need to buy cannabis beyond the medical allowance; effect of cannabis on pain, sleep, depression, and anxiety; adverse effects of cannabis; feelings of dependence on cannabis or other meds; the involvement of family members; tendency to drive after using cannabis; and employment and social disability status. Results Of 2,705 people, 383 (14%) responded to the questionnaire, with a mean age of 42.2±14.2 years. Of the responders, 84% reported consuming cannabis, and 44% were licensed for MC. The mean amount per month of cannabis consumed was 31.4±16.3g, and 80% of cannabis consumers (CC) smoked pure cannabis or cannabis mixed with tobacco. Pain relief was reported by 94% of CC, while 93% reported improved sleep quality, 87% reported improvement in depression, and 62% reported improvement in anxiety. Of MC-licensed CC, 55% bought cannabis beyond the medical allowance on the black market. Adverse effects were reported by 12% of CC. Only 8% reported dependence on cannabis. Most CC (64%) worked either full- or part-time jobs, and 74% reported driving “as usual” under cannabis use. Conclusions Cannabis consumption among fibromyalgia patients in our country is very common and is mostly not licensed. Nearly all CC reported favorable effects on pain and sleep, and few reported adverse effects or feeling of dependence on cannabis.
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Madden K, van der Hoek N, Chona S, George A, Dalchand T, Baldawi H, Mammen G, Bhandari M. Cannabinoids in the Management of Musculoskeletal Pain. JBJS Rev 2018; 6:e7. [DOI: 10.2106/jbjs.rvw.17.00153] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Fitzcharles M, Eisenberg E. Medical cannabis: A forward vision for the clinician. Eur J Pain 2018; 22:485-491. [DOI: 10.1002/ejp.1185] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2017] [Indexed: 12/18/2022]
Affiliation(s)
- M.A. Fitzcharles
- Alan Edwards Pain Management Unit; McGill University Health Centre; Montreal QC Canada
- Division of Rheumatology; McGill University Health Centre; Montreal QC Canada
| | - E. Eisenberg
- Pain Research Unit; Institute of Pain Medicine; Rambam Health Care Campus; Haifa Israel
- Technion-Institute of Technology; Haifa Israel
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Piper BJ. Mother of Berries, ACDC, or Chocolope: Examination of the Strains Used by Medical Cannabis Patients in New England. J Psychoactive Drugs 2017; 50:95-104. [PMID: 29064777 DOI: 10.1080/02791072.2017.1390179] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Medical marijuana patients often believe that specific strains are more efficacious at treating their conditions. The goals of this investigation were to determine: (1) how many strains of cannabis are there; (2) which strains are used by medical cannabis (MC) patients; and (3) are there any differences in the strains used by patient condition? Study I involved quantifying the number of strains listed in the online database leafly.com and categorizing these by whether the strain name included a gustatory component. MC patients (N = 455) from New England completed an anonymous online survey about their medical history and strain preferences in Study II. There were 1,987 strains listed. Hybrids were significantly more likely than Cannabis indica strains to have a gustatory title. Strain preferences were highly state/dispensary specific with one-fifth of MC patients in Maine preferring Mother of Berries (M.O.B., 21.5%). Many respondents mentioned that they had developed a time-dependent pattern with sativa use during the day and an indica for nighttime use and for improving sleep. There is some general consistency across dispensaries in that hybrid strains and C. indica were most common. Further longitudinal and controlled investigations are necessary to identify the strains that are most efficacious for specific conditions.
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Affiliation(s)
- Brian J Piper
- a Assistant Professor of Neuroscience, Department of Basic Sciences , Geisinger Commonwealth School of Medicine , Scranton , PA , USA
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