Patients’ and clinicians’ perspectives of co-use of cannabis and opioids for chronic non-cancer pain management in primary care.

International Journal of Drug Policy

“The prevalence of opioid-associated morbidity and mortality underscores the need for research on non-opioid treatments for chronic non-cancer pain (CNCP). Pain is the most common medical condition for which patients request medical cannabis. Limited research indicates that patients are interested in cannabis as a potential addition to or replacement for opioid medication. This analysis reports on CNCP patient and clinician perceptions about the co-use of cannabis and opioids for CNCP management.

METHODS:

We interviewed 23 clinicians and 46 CNCP patients, using semi-structured interview guides, from six safety-net clinics across the San Francisco Bay Area, and 5 key stakeholders involved in CNCP management. We used a modified grounded theory approach to code and analyze transcripts.

RESULTS:

CNCP patients described potential benefits of co-use of cannabis and opioids for pain management and concerns about dosing and addictive potential. Patients reported seeking cannabis when unable to obtain prescription opioids. Clinicians stated that their patients reported cannabis being helpful in managing pain symptoms. Clinicians expressed concerns about the potential exacerbation of mental health issues resulting from cannabis use.

CONCLUSION:

Clinicians are hampered by a lack of clinically relevant information about cannabis use, efficacy and side-effects. Currently no guidelines exist for clinicians to address opioid and cannabis co-use, or to discuss the risk and benefits of cannabis for CNCP management, including side effects. Cannabis and opioid co-use was commonly reported by patients in our sample, yet rarely addressed during clinical CNCP care. Further research is needed on the risks and benefits of cannabis and opioid co-use.”

https://www.ncbi.nlm.nih.gov/pubmed/30472467

https://www.sciencedirect.com/science/article/pii/S0955395918302287

Cannabis for the treatment of paediatric epilepsy? An update for Canadian paediatricians.

Issue Cover

“The plant Cannabis sativa produces over 140 known cannabinoids. These chemicals generate considerable interest in the medical research community for their possible application to several intractable disease conditions. Recent reports have prompted parents to strongly consider Cannabis products to treat their children with drug resistant epilepsy. Physicians, though, are reluctant to prescribe Cannabis products due to confusion about their regulatory status and limited clinical data supporting their use. We provide the general paediatrician with a brief review of cannabinoid biology, the literature regarding their use in children with drug resistant epilepsy, the current Health Canada and Canadian Paediatric Society recommendations and also the regulations from the physician regulatory bodies for each province and territory. Given the complexities of conducting research on Cannabis products for children with epilepsy, we also discuss outstanding research objectives that must be addressed to support Cannabis products as an accepted treatment option for children with refractory epilepsy.”

https://www.ncbi.nlm.nih.gov/pubmed/30455572

https://academic.oup.com/pch/article-abstract/23/6/368/4961446?redirectedFrom=fulltext

Oncology Clinicians and the Minnesota Medical Cannabis Program: A Survey on Medical Cannabis Practice Patterns, Barriers to Enrollment, and Educational Needs.

Cannabis and Cannabinoid Research cover image

“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.

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.”

https://www.ncbi.nlm.nih.gov/pubmed/30426072

https://www.liebertpub.com/doi/10.1089/can.2018.0029

Effect of adding medical cannabis to analgesic treatment in patients with low back pain related to fibromyalgia: an observational cross-over single centre study.

Image result for Clin Exp Rheumatol.

“Low back pain (LBP) occurs in many patients with fibromyalgia (FM). The current study aimed to assess the possible pain and function amelioration associated with medical cannabis therapy (MCT) in this setting.

METHODS:

31 patients were involved in an observational cross-over study. The patients were screened, treated with 3 months of standardised analgesic therapy (SAT): 5 mg of oxycodone hydrochloride equivalent to 4.5 mg oxycodone and 2.5 mg naloxone hydrochloride twice a day and duloxetine 30 mg once a day. Following 3 months of this therapy, the patients could opt for MCT and were treated for a minimum of 6 months. Patient reported outcomes (PRO’s) included: FIQR, VAS, ODI and SF-12 and lumbar range of motion (ROM) was recorded using the modified Schober test.

RESULTS:

While SAT led to minor improvement as compared with baseline status, the addition of MCT allowed a significantly higher improvement in all PRO’s at 3 months after initiation of MCT and the improvement was maintained at 6 months. ROM improved after 3 months of MCT and continued to improve at 6 months.

CONCLUSIONS:

This observational cross-over study demonstrates an advantage of MCT in FM patients with LBP as compared with SAT. Further randomised clinical trial studies should assess whether these results can be generalised to the FM population at large.”

Medical Cannabis: A plurimillennial history of an evergreen.

 Journal of Cellular Physiology banner“The history of Cannabis goes along that of humankind, as speculated based on geographical and evolutionary models together with historic data collected to date. Its medical use is several thousand years old, as attested both by archeobotanical evidence of Cannabis remains and written records found in ancient texts from the sacred Vedic foundational texts of Ayurvedic medicine (about 800 before current era [BCE]) to the first known Pharmacopoea, the Chinese “Shen Nung Pen Ts’ao Ching” (1 century BCE). In this paper, we retrace the history of Cannabis traveling through the key stages of its diffusion among the most important ancient cultures up to our days, when we are facing a renaissance of its medical employment. We report through the centuries evidence of its use in numerous pathologic conditions especially for its anti-inflammatory, antiseptic, and anticonvulsing properties that support the requirement to direct our present research efforts into the definitive understanding of its efficacy.”

https://www.ncbi.nlm.nih.gov/pubmed/30417354

https://onlinelibrary.wiley.com/doi/abs/10.1002/jcp.27725

Cannabis and the Anxiety of Fragmentation-A Systems Approach for Finding an Anxiolytic Cannabis Chemotype.

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“Cannabis sativa is a medicinal herb with a diverse range of chemotypes that can exert both anxiolytic and anxiogenic effects on humans. Medical cannabis patients receiving organically grown cannabis from a single source were surveyed about the effectiveness of cannabis for treating anxiety.

Patients rated cannabis as highly effective overall for treating anxiety with an average score of 8.03 on a Likert scale of 0 to 10 (0 = not effective, 10 = extremely effective).

Patients also identified which strains they found the most or least effective for relieving their symptoms of anxiety. To find correlations between anxiolytic activity and chemotype, the top four strains voted most and least effective were analyzed by HPLC-MS/MS to quantify cannabinoids and GC-MS to quantify terpenes. Tetrahydrocannabinol (THC) and trans-nerolidol have statistically significant correlations with increased anxiolytic activity.

Guiaol, eucalyptol, γ-terpinene, α-phellandrene, 3-carene, and sabinene hydrate all have significant correlations with decreased anxiolytic activity. Further studies are needed to better elucidate the entourage effects that contribute to the anxiolytic properties of cannabis varieties.”

https://www.ncbi.nlm.nih.gov/pubmed/30405331

https://www.frontiersin.org/articles/10.3389/fnins.2018.00730/full

Medical cannabis: A needs analysis for people with epilepsy.

Complementary Therapies in Clinical Practice

“Medical cannabis may be effective treatment for refractory epilepsy.

It is timely to seek users’ and potential users’ opinions in regard to its place in the management of epilepsy.

RESULTS:

People with epilepsy (33/71) and carers (38/71) participated. Fifty-four participants indicated no experience with medical cannabis, although 35, mainly with inadequate response to prescription medicines, were willing to ask for a prescription. Concerns included difficulty accessing cannabis and high cost of this treatment. Tablets/capsules was the most acceptable dosage form for development.

CONCLUSION:

These findings suggest wide interest in trialling medical cannabis in individual cases of refractory epilepsy, despite the developing body of literature and some concerns about cost and procurement.”

https://www.ncbi.nlm.nih.gov/pubmed/30396625

https://www.sciencedirect.com/science/article/pii/S1744388118302354?via%3Dihub

Medical Use of Cannabinoids.

“Cannabinoid receptors, endocannabinoids and the enzymes responsible for their biosynthesis and degradation constitute the endocannabinoid system. In recent decades, the endocannabinoid system has attracted considerable interest as a potential therapeutic target in numerous pathological conditions. Its involvement in several physiological processes is well known, such as in energy balance, appetite stimulation, blood pressure, pain modulation, embryogenesis, nausea and vomiting control, memory, learning and immune response, among others, as well as in pathological conditions where it exerts a protective role in the development of certain disorders. As a result, it has been reported that changes in endocannabinoid levels may be related to neurological diseases such as Parkinson’s disease, Huntington’s disease, Alzheimer’s disease and multiple sclerosis, as well as anorexia and irritable bowel syndrome. Alterations in the endocannabinoid system have also been associated with cancer, affecting the growth, migration and invasion of some tumours. Cannabinoids have been tested in several cancer types, including brain, breast and prostate cancers. Cannabinoids have shown promise as analgesics for the treatment of both inflammatory and neuropathic pain. There is also evidence for a role of the endocannabinoid system in the control of emotional states, and cannabinoids could prove useful in decreasing and palliating post-traumatic stress disorder symptoms and anxiolytic disorders. The role of the endocannabinoid system in addictions has also been examined, and cannabinoids have been postulated as alternative and co-adjuvant treatments in some abuse syndromes, mainly in ethanol and opioid abuses. The expression of the endocannabinoid system in the eye suggests that it could be a potential therapeutic target for eye diseases. Considering the importance of the endocannabinoid system and the therapeutic potential of cannabinoids in this vast number of medical conditions, several clinical studies with cannabinoid-based medications are ongoing. In addition, some cannabinoid-based medications have already been approved in various countries, including nabilone and dronabinol capsules for the treatment of nausea and vomiting associated with chemotherapy, dronabinol capsules for anorexia, an oral solution of dronabinol for both vomiting associated with chemotherapy and anorexia, a Δ9-tetrahydrocannabinol/cannabidiol oromucosal spray for pain related to cancer and for spasticity and pain associated with multiple sclerosis, and an oral solution of cannabidiol for Dravet and Lennox-Gastaut syndromes. Here, we review the available efficacy, safety and tolerability data for cannabinoids in a range of medical conditions.”

https://www.ncbi.nlm.nih.gov/pubmed/30374797

https://link.springer.com/article/10.1007%2Fs40265-018-0996-1

The Role of Cannabis in the Management of Inflammatory Bowel Disease: A Review of Clinical, Scientific, and Regulatory Information: Commissioned by the Crohn’s and Colitis Foundation.

Oxford University Press

“There is significant interest among patients and providers in using cannabis (marijuana) and its derivatives to treat a number of chronic illnesses, including inflammatory bowel disease. Despite the Schedule I classification of cannabis by the federal government, state governments have sought ways to make cannabis available for specific medical conditions, and some states have legalized cannabis outright. This white paper summarizes the preclinical data, clinical data, safety data, and the regulatory landscape as they apply to medical cannabis use in inflammatory bowel disease. Animal models of cannabinoid chemistry and physiology give evidence of anti-inflammatory, antidiarrheal, and nociceptive-limiting properties. Human studies have found benefit in controlling symptoms and improving quality of life, but no studies have established true disease modification given the absent improvement in biomarker profiles or endoscopic healing. Finally, this review describes the legal, regulatory, and practical hurdles to studying the risks and benefits of medical cannabis in the United States.”

https://www.ncbi.nlm.nih.gov/pubmed/30358848

https://academic.oup.com/ibdjournal/advance-article-abstract/doi/10.1093/ibd/izy319/5144402?redirectedFrom=fulltext

Single center experience with medical cannabis in Gilles de la Tourette syndrome.

Parkinsonism and Related Disorders Home

“Patients with Gilles de la Tourette syndrome (GTS) experience reduced function and impaired quality of life. The current medical treatments for this syndrome can cause significant side effects and offer partial symptomatic relief.

In a few small trials medical cannabis (MC) has been suggested to offer symptomatic relief with a relatively benign side effect profile.

We conducted a real-life assessment of clinical benefit and adverse effects of chronic MC treatment among patients with GTS.

CONCLUSION:

MC seems to hold promise in the treatment of GTS as it demonstrated high subjective satisfaction by most patients however not without side effects and should be further investigated as a treatment option for this syndrome.”

https://www.ncbi.nlm.nih.gov/pubmed/30292733

https://www.prd-journal.com/article/S1353-8020(18)30429-2/fulltext