THC Total Health Care

A comprehensive encyclopedia of THC related medical research articles

Should Cannabinoids Be Added to Multimodal Pain Regimens After Total Hip and Knee Arthroplasty?

Posted on September 2, 2018 by David Worrell

“This study investigated the effects of dronabinol on pain, nausea, and length of stay following total joint arthroplasty (TJA).

CONCLUSION:

These findings suggest that further investigation into the role of cannabinoid medications for non-opioid pain control in the post-arthroplasty patient may hold merit.” https://www.ncbi.nlm.nih.gov/pubmed/30170713 “In conclusion, our study suggests that cannabinoids may have a role in post-arthroplasty pain management and may reduce patient’s need for opioid-containing pain medications. Further randomized, prospective clinical trials are warranted to shed more light onto the possible beneficial effects of cannabinoid medications in the orthopedic surgery patient population.” https://www.arthroplastyjournal.org/article/S0883-5403(18)30670-3/fulltext]]>

Effect of Cannabidiol on Medial Temporal, Midbrain, and Striatal Dysfunction in People at Clinical High Risk of Psychosis: A Randomized Clinical Trial.

Posted on September 1, 2018 by David Worrell

“Cannabidiol (CBD) has antipsychotic effects in humans, but how these are mediated in the brain remains unclear.

OBJECTIVE:

To investigate the neurocognitive mechanisms that underlie the therapeutic effects of CBD in psychosis. CONCLUSIONS AND RELEVANCE: Cannabidiol may partially normalize alterations in parahippocampal, striatal, and midbrain function associated with the CHR state. As these regions are critical to the pathophysiology of psychosis, the influence of CBD at these sites could underlie its therapeutic effects on psychotic symptoms.” https://www.ncbi.nlm.nih.gov/pubmed/30167644 https://jamanetwork.com/journals/jamapsychiatry/fullarticle/2697762

“Psychosis: Cannabis extract normalizes brain function” https://www.medicalnewstoday.com/articles/322926.php

“Cannabis extract helps reset brain function in psychosis” https://medicalxpress.com/news/2018-08-cannabis-reset-brain-function-psychosis.html

“Cannabis extract can help treat psychosis, study suggests” https://www.independent.co.uk/news/health/cannabis-oil-psychosis-cbd-thc-legal-treatment-symptoms-mental-health-kings-college-london-a8512996.html

“Cannabis extract helps reset brain function in psychosis” https://www.eurekalert.org/pub_releases/2018-08/kcl-ceh082818.php

“Cannabidiol Reduces Symptoms of Psychosis. A new study found that the chemical extracted from cannabis has antipsychotic effects.” https://www.usnews.com/news/health-care-news/articles/2018-08-29/one-dose-of-cannabidiol-reduces-symptoms-of-psychosis

“MEDICAL MARIJUANA: CANNABIS EXTRACT CBD USED TO SUCCESSFULLY TREAT PSYCHOSIS.” https://www.newsweek.com/cannabidiol-cannabis-extract-could-treat-symptoms-psychosis-1094353

“Single dose of the cannabis compound CBD reduces psychotic symptoms by normalising brain activity” http://www.dailymail.co.uk/health/article-6110591/Single-dose-cannabis-compound-CBD-reduces-psychotic-symptoms-normalising-brain-activity.html

“Brain scans show how cannabis extract may help people with psychosis” https://www.theguardian.com/science/2018/aug/29/brain-scans-show-how-cannabis-extract-may-help-people-with-psychosis

“British scientists have unraveled how a non-intoxicating component of cannabis acts in key brain areas to reduce abnormal activity in patients at risk of psychosis, suggesting the ingredient could become a novel anti-psychotic medicine.” https://www.theglobeandmail.com/cannabis/article-scientists-unravel-how-cannabis-component-may-fight-psychosis/

“Science proves component in weed actually helps fight psychosis” https://nypost.com/2018/08/29/science-proves-component-in-weed-actually-helps-fight-psychosis/

“Cannabis component CBD can combat psychosis” https://www.businesslive.co.za/bd/world/europe/2018-08-31-cannabis-component-cbd-can-combat-psychosis/

“Marijuana extract can help curb psychosis, study says” https://www.upi.com/Health_News/2018/08/29/Marijuana-extract-can-help-curb-psychosis-study-says/5371535560101/

“We Now Have Evidence That a Marijuana Compound Can Help People With Psychosis” https://futurism.com/cbd-psychosis/

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Reprint of: Efficacy, tolerability, and safety of non-pharmacological therapies for chronic pain: An umbrella review on various CAM approaches.

Posted on August 16, 2018 by David Worrell

“Complementary and alternative medicine (CAM) therapies may be used as a non-pharmacological approach to chronic pain management. Inhaled cannabis, graded motor imagery, and Compound Kushen injection (a form of Chinese medicine) were found the most efficient and tolerable for chronic pain relief.” https://www.ncbi.nlm.nih.gov/pubmed/30107944 https://www.sciencedirect.com/science/article/pii/S027858461830602X?via%3Dihub]]>

Personal experience and attitudes of pain medicine specialists in Israel regarding the medical use of cannabis for chronic pain.

Posted on August 15, 2018 by David Worrell

“The scientific study of the role of cannabis in pain medicine still lags far behind the growing use driven by public approval. Accumulated clinical experience is therefore an important source of knowledge. However, no study to date has targeted physicians who actually use cannabis in their daily practice.

RESULTS:

Sixty-four percent of all practicing pain specialists in Israel responded. Almost all prescribe cannabis. Among them, 63% find cannabis moderately to highly effective, 56% have encountered mild or no side effects, and only 5% perceive it as significantly harmful. Common indications are neuropathic pain (65%), oncological pain (50%), arthralgias (25%), and any intractable pain (29%). Leading contraindications are schizophrenia (76%), pregnancy/breastfeeding (65%), and age <18 years (59%). Only 12% rated cannabis as more hazardous than opiates. On a personal note, 45% prefer cannabis for themselves or a family member. Lastly, 54% would like to see cannabis legalized in Israel.

CONCLUSION:

In this survey, pain clinicians experienced in prescribing cannabis over prolonged periods view it as an effective and relatively safe treatment for chronic pain, based on their own experience. Their responses suggest a possible change of paradigm from using cannabis as the last resort.”

https://www.ncbi.nlm.nih.gov/pubmed/30104896

https://www.dovepress.com/personal-experience-and-attitudes-of-pain-medicine-specialists-in-isra-peer-reviewed-article-JPR

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Preliminary evaluation of the efficacy, safety, and costs associated with the treatment of chronic pain with medical cannabis.

Posted on July 3, 2018 by David Worrell

College of Psychiatric and Neurologic Pharmacists

“Medical cannabis (MC) is commonly claimed to be an effective treatment for chronic or refractory pain. With interest in MC in the United States growing, as evidenced by the 29 states and 3 US districts that now have public MC programs, the need for clinical evidence supporting this claim has never been greater.

METHODS:

This was a retrospective, mirror-image study that investigated MC’s effectiveness in patients suffering from chronic pain associated with qualifying conditions for MC in New York State. The primary outcome was to compare European Quality of Life 5 Dimension Questionnaire (EQ-5D) and Pain Quality Assessment Scale (PQAS) scores at baseline and 3 months post-therapy. The secondary outcomes included comparisons of monthly analgesic prescription costs and opioid consumption pre- and post-therapy. Tolerability was assessed by side effect incidence.

RESULTS:

This investigation included 29 subjects. Quality of life and pain improved, measured by change in EQ-5D (Pre 36 - Post 64, P < .0001) and change in PQAS paroxysmal (Pre 6.76 - Post 2.04, P < .0001), surface (Pre 4.20 - Post 1.30, P < .0001), deep (Pre 5.87 - Post 2.03, P < .0001), unpleasant (Pre “miserable” - Post “annoying”, P < .0001). Adverse effects were reported in 10% of subjects.

DISCUSSION:

After 3 months treatment, MC improved quality of life, reduced pain and opioid use, and lead to cost savings. Large randomized clinical trials are warranted to further evaluate the role of MC in the treatment of chronic pain.” https://www.ncbi.nlm.nih.gov/pubmed/29955555

http://mhc.cpnp.org/doi/10.9740/mhc.2018.05.110

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Role of the cannabinoid signaling in the brain orexin- and ghrelin-induced visceral antinociception in conscious rats.

Posted on July 3, 2018 by David Worrell

“We hypothesized that the cannabinoid (CB) system may mediate the brain orexin- or ghrelin-induced visceral antinociception. Intraperitoneal injection of either CB_1/2 agonist, WIN 55212 or O-Arachidonoyl ethanolamine increased the threshold volume of colonic distension-induced abdominal withdrawal reflex in rats, suggesting CB could induce visceral antinociception. Pretreatment with either the CB₁ or CB₂ antagonist potently blocked the centrally injected orexin-A-induced antinociceptive action against colonic distension while CB₂ but not CB₁ antagonist blocked the brain ghrelin-induced visceral antinociception. These results suggest that the cannabinoid signaling may be involved in the central orexin- or ghrelin-induced antinociceptive action in a different mechanistic manner.”

https://www.ncbi.nlm.nih.gov/pubmed/29958814

https://www.sciencedirect.com/science/article/pii/S1347861318301002?via%3Dihub

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Medical Cannabis in Patients with Chronic Pain: Effect on Pain Relief, Pain Disability, and Psychological aspects. A Prospective Non randomized Single Arm Clinical Trial.

Posted on June 26, 2018 by David Worrell

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“There is an increasing interest in the medical use of cannabis, particularly in the treatment of chronic pain.

OBJECTIVES:

The aim is to evaluate the effects of cannabis use and the associated benefits reported by patients with various chronic pain diagnoses.

RESULTS:

Pain intensity records a statistically significant reduction from Baseline to 12 months follow up (X² 61.375; P<0,001); the im- provements from Baseline to 12 months follow up are also recorded in pain disability (X² 39.423; P<0,001) and in anxiety and depression symptoms (X²30.362; P<0,001; X²27.786; P<0,001).

CONCLUSIONS:

Our study suggest that Cannabis therapy, as an adjun- ct a traditional analgesic therapy, can be an efficacious tool to make more effective the management of chronic pain and its consequences on functional and psychological dimension. Further randomized, controlled trials are needed to confirm our conclusions.” https://www.ncbi.nlm.nih.gov/pubmed/29938740

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The relationship of endocannabinoidome lipid mediators with pain and psychological stress in women with fibromyalgia – a case control study.

Posted on June 10, 2018 by David Worrell

“Characterized by chronic widespread pain, generalized hyperalgesia, and psychological stress fibromyalgia (FM) is difficult to diagnose and lacks effective treatments. The endocannabinoids – arachidonoylethanolamide (AEA), 2-arachidonoylglycerol (2-AG), and the related oleoylethanolamide (OEA), palmitoylethanolamide (PEA), and stearoylethanolamide (SEA) – are endogenous lipid mediators with analgesic and anti-inflammatory characteristics, in company with psychological modulating properties (e.g., stress and anxiety), and are included in a new emerging “ome”, the endocannabinoidome. This case -control study compared the concentration differences of AEA, OEA, PEA, SEA, and 2-AG in 104 women with FM and 116 healthy controls (CON). All participants OEArated their pain, anxiety, depression, and current health status. The relationships between the lipid concentrations and the clinical assessments were investigated using powerful multivariate data analysis and traditional bivariate statistics. The concentrations of OEA, PEA, SEA, and 2-AG were significantly higher in FM than in CON; significance remained for OEA and SEA after controlling for BMI and age. 2-AG correlated positively with FM duration and BMI, and to some extent negatively with pain, anxiety, depression, and health status. In FM, AEA correlated positively with depression ratings. The elevated circulating levels of endocannabinoidome lipids suggest that these lipids play a role in the complex pathophysiology of FM and might be signs of ongoing low-grade inflammation in FM. Although the investigated lipids are significantly altered in FM their biological roles are uncertain with respect to the clinical manifestations of FM. Thus, plasma lipids alone are not good biomarkers for FM.

PERSPECTIVE:

This study reports about elevated plasma levels of endocannabinoidome lipid mediators in FM. The lipids suitability to work as biomarkers for FM in the clinic were low, however their altered levels indicate that a metabolic asymmetry is ongoing in FM, which could serve as basis during explorative FM pain management.” https://www.ncbi.nlm.nih.gov/pubmed/29885369 https://www.jpain.org/article/S1526-5900(18)30197-4/fulltext]]>

Cannabinoid receptor type 1 in the brain regulates the affective component of visceral pain in mice.

Posted on June 10, 2018 by David Worrell

“Endocannabinoids acting through cannabinoid receptor type 1 (CB1) are major modulators of peripheral somatic and visceral nociception. Although only partially studied, some evidence suggests a particular role of CB1 within the brain in nociceptive processes. As the endocannabinoid system regulates affect and emotional behaviors, we hypothesized that cerebral CB1 influences affective processing of visceral pain-related behaviors in laboratory animals. To study nocifensive responses modulated by supraspinal CB1, we used conditional knock-out mice lacking CB1 either in cortical glutamatergic neurons (Glu-CB1-KO), or in forebrain GABAergic neurons (GABA-CB1-KO), or in principle neurons of the forebrain (CaMK-CB1-KO). These mutant mice and mice treated with the CB1 antagonist SR141716 were tested for different pain-related behaviors. In an acetic acid-induced abdominal constriction test, supraspinal CB1 deletions did not affect nocifensive responses. In the cerulein-model of acute pancreatitis, mechanical allodynia or hyperalgesia were not changed, but Glu-CB1- and CaMK-CB1-KO mice showed significantly increased facial grimacing scores indicating increased affective responses to this noxious visceral stimulus. Similarly, these brain-specific CB1 KO mice also showed significantly changed thermal nociception in a hot-plate test. These results reveal a novel, and important role of CB1 expressed by cortical glutamatergic neurons in the affective component of visceral nociception.” https://www.ncbi.nlm.nih.gov/pubmed/29885522

https://www.sciencedirect.com/science/article/pii/S0306452218303919

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[Cannabinoids in pain medicine]

Posted on June 9, 2018 by David Worrell

“The endocannabinoid system (ECS) controls a large number of vital functions. Suboptimal tone of the ECS in certain regions of the nervous system may be associated with disorders that are also associated with pain. Pain and inflammation processes can be modulated by the exogenous supply of cannabinoids. Low-to-moderate pain-relieving effects and in individual cases large pain-relieving effects were observed in randomized, controlled studies of various types of chronic pain. People with chronic neuropathic pain and stress symptoms seem to particularly benefit. The therapeutic range of cannabinoids is small; often small doses are sufficient for clinically significant effects. The “Cannabis-als-Medizin-Gesetz” (cannabis as medicine law) allows the prescription of cannabis preparations under certain conditions. Available data indicate good long-term efficacy and tolerability. However, there is little systematic long-term experience from clinical studies.” https://www.ncbi.nlm.nih.gov/pubmed/29881935 https://link.springer.com/article/10.1007%2Fs00482-018-0299-1]]>