Category Archives: THC (Delta-9-Tetrahydrocannabinol)

The disease-modifying effects of a Sativex-like combination of phytocannabinoids in mice with experimental autoimmune encephalomyelitis are preferentially due to Δ9-tetrahydrocannabinol acting through CB1 receptors.

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“Sativex®, an equimolecular combination of Δ9-tetrahydrocannabinol-botanical drug substance (Δ9-THC-BDS) and cannabidiol-botanical drug substance (CBD-BDS), is a licensed medicine that may be prescribed for alleviating specific symptoms of multiple sclerosis (MS) such as spasticity and pain.

However, further evidence suggest that it could be also active as disease-modifying therapy given the immunomodulatory, anti-inflammatory and cytoprotective properties of their two major components.

In this study, we investigated this potential in the experimental autoimmune encephalitis (EAE) model of MS in mice.

We compared the effect of a Sativex-like combination of Δ9-THC-BDS (10mg/kg) and CBD-BDS (10mg/kg) with Δ9-THC-BDS (20mg/kg) or CBD-BDS (20mg/kg) administered separately by intraperitoneal administration to EAE mice.

Treatments were initiated at the time that symptoms appear and continued up to the first relapse of the disease.

The results show that the treatment with a Sativex-like combination significantly improved the neurological deficits typical of EAE mice, in parallel with a reduction in the number and extent of cell aggregates present in the spinal cord which derived from cell infiltration to the CNS.

These effects were completely reproduced by the treatment with Δ9-THC-BDS alone, but not by CBD-BDS alone which only delayed the onset of the disease without improving disease progression and reducing the cell infiltrates in the spinal cord.

Next, we investigated the potential targets involved in the effects of Δ9-THC-BDS by selectively blocking CB1 or PPAR-γ receptors, and we found a complete reversion of neurological benefits and the reduction in cell aggregates only with rimonabant, a selective CB1 receptor antagonist.

Collectively, our data support the therapeutic potential of Sativex as a phytocannabinoid formulation capable of attenuating EAE progression, and that the active compound was Δ9-THC-BDS acting through CB1 receptors.”

Controlled release tablet formulation containing natural δ9 tetrahydrocannabinol.

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“Cannabinoids are increasingly being used in the treatment of chemotherapy induced nausea and vomiting (CINV) because of their action on the cannabinoid receptors, CB1 and CB2.

The currently marketed capsule formulations (sesame oil based and crystalline powder) are required to be administered frequently to maintain therapeutic levels, which leads to non-compliance.

In the present study, oral controlled release tablet formulations of Δ9- tetrahydrocannabinol (THC) were prepared using the lipids Precirol® and Compritrol®. Release profiles using THC-lipid matrices and/or with the lipids in the external phase (blend) were evaluated…

The overall results demonstrate the feasibility of preparing oral THC tablets for once a day administration which can improve CINV management.”

http://www.ncbi.nlm.nih.gov/pubmed/26585693

The effect of five day dosing with THCV on THC-induced cognitive, psychological and physiological effects in healthy male human volunteers: A placebo-controlled, double-blind, crossover pilot trial.

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“Cannabis is mostly grown under illegal and unregulated circumstances, which seems to favour a product increasingly high in its main cannabinoid ∆-9-tetrahydrocannabinol (THC). ∆-9-tetrahydrocannabivarin (THCV) is a relatively untested cannabinoid which is said to be a cannabinoid receptor neutral antagonist, and may inhibit the effects of THC.

In this first study of THC and THCV, THCV inhibited some of the well-known effects of THC, while potentiating others.”

http://www.ncbi.nlm.nih.gov/pubmed/26577065

 

Effectiveness and Tolerability of THC/CBD Oromucosal Spray for Multiple Sclerosis Spasticity in Italy: First Data from a Large Observational Study.

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“The prospective, non-interventional Mobility Improvement (MOVE) 2 study was designed to provide real life data on clinical outcomes of patients with treatment-resistant multiple sclerosis (MS) spasticity receiving routine treatment with tetrahydrocannabinol (THC):cannabidiol (CBD) oromucosal spray (Sativex®), subsequent to its approval in European countries.

In everyday clinical practice in Italy, THC:CBD oromucosal spray provided symptomatic relief of MS spasticity with good tolerability in a relevant number of previously resistant patients.”

http://www.ncbi.nlm.nih.gov/pubmed/26571097

Cannabinoids for nausea and vomiting in adults with cancer receiving chemotherapy.

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“Cannabis has a long history of medicinal use.

Cannabis-based medications (cannabinoids) are based on its active element, delta-9-tetrahydrocannabinol (THC), and have been approved for medical purposes.

Cannabinoids may be a useful therapeutic option for people with chemotherapy-induced nausea and vomiting that respond poorly to commonly used anti-emetic agents (anti-sickness drugs).

Cannabis-based medications may be useful for treating refractory chemotherapy-induced nausea and vomiting.”

http://www.ncbi.nlm.nih.gov/pubmed/26561338

http://www.thctotalhealthcare.com/category/nauseavomiting/

[There is evidence for the use of cannabinoids for symptomatic treatment of multiple sclerosis].

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“We identified 16 randomized placebo-controlled trials investigating cannabinoids as symptomatic treatment in multiple sclerosis (MS). There is evidence that nabiximols oromucosal spray may reduce subjective symptoms of spasticity and that dronabinol is effective against neuropathic pain in patients with MS.”

http://www.ncbi.nlm.nih.gov/pubmed/26535431

http://www.thctotalhealthcare.com/category/multiple-sclerosis-ms/

The prescription of medical cannabis by a transitional pain service to wean a patient with complex pain from opioid use following liver transplantation: a case report.

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Canadian Journal of Anesthesia/Journal canadien d'anesthésie

“The purpose of this case report is to describe a patient with a preoperative complex pain syndrome who underwent liver transplantation and was able to reduce his opioid consumption significantly following the initiation of treatment with medical cannabis.

CLINICAL FEATURES:

A 57-yr-old male with a history of hepatitis C cirrhosis underwent liver transplantation. Preoperatively, he was taking hydromorphone 2-8 mg⋅day-1 for chronic abdominal pain. Postoperatively, he was given intravenous patient-controlled analgesia through which he received hydromorphone 30 mg⋅day-1. Our multidisciplinary Transitional Pain Service was involved with managing his moderate to severe acute postsurgical pain in hospital and continued with weaning him from opioid medications after discharge. It was difficult to wean the patient from opioids, and he was subsequently given medical cannabis at six weeks postoperatively with remarkable effect. By the fifth postoperative month, his use of opioids had tapered to 6 mg⋅day-1 of hydromorphone, and his functional status was excellent on this regimen.

CONCLUSION:

Reductions in opioid consumption were achieved with the administration of medical cannabis in a patient with acute postoperative pain superimposed on a chronic pain syndrome and receiving high doses of opioids. Concurrent benefits of initiating medical cannabis may include improvements in pain profile and functional status along with reductions in opioid-related side effects. This highlights the potential for medical cannabis as an adjunct medication for weaning patients from opioid use.”

http://www.ncbi.nlm.nih.gov/pubmed/26507533

Prospects for Creation of Cardioprotective Drugs Based on Cannabinoid Receptor Agonists.

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“Cannabinoids can mimic the infarct-reducing effect of early ischemic preconditioning, delayed ischemic preconditioning, and ischemic postconditioning against myocardial ischemia/reperfusion. They do this primarily through both CB1 and CB2 receptors.

Cannabinoids are also involved in remote preconditioning of the heart.

The cannabinoid receptor ligands also exhibit an antiapoptotic effect during ischemia/reperfusion of the heart.

The acute cardioprotective effect of cannabinoids is mediated by activation of protein kinase C, extracellular signal-regulated kinase, and p38 kinase.

The delayed cardioprotective effect of cannabinoid anandamide is mediated via stimulation of phosphatidylinositol-3-kinase-Akt signaling pathway and enhancement of heat shock protein 72 expression.

The delayed cardioprotective effect of another cannabinoid, Δ9-tetrahydrocannabinol, is associated with augmentation of nitric oxide (NO) synthase expression, but data on the involvement of NO synthase in the acute cardioprotective effect of cannabinoids are contradictory.

The adenosine triphosphate-sensitive K+ channel is involved in the synthetic cannabinoid HU-210-induced cardiac resistance to ischemia/reperfusion injury.

Cannabinoids inhibit Na+/Ca2+ exchange via peripheral cannabinoid receptor (CB2) activation that may also be related to the antiapoptotic and cardioprotective effects of cannabinoids.

The cannabinoid receptor agonists should be considered as prospective group of compounds for creation of drugs that are able to protect the heart against ischemia-reperfusion injury in the clinical setting.”

http://www.ncbi.nlm.nih.gov/pubmed/26487546

Polypharmacology Shakes Hands with Complex Aetiopathology.

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“Chronic diseases are due to deviations of fundamental physiological systems, with different pathologies being characterised by similar malfunctioning biological networks.

The ensuing compensatory mechanisms may weaken the body’s dynamic ability to respond to further insults and reduce the efficacy of conventional single target treatments.

The multitarget, systemic, and prohomeostatic actions emerging for plant cannabinoids exemplify what might be needed for future medicines.

Indeed, two combined cannabis extracts were approved as a single medicine (Sativex®), while pure cannabidiol, a multitarget cannabinoid, is emerging as a treatment for paediatric drug-resistant epilepsy.

Using emerging cannabinoid medicines as an example, we revisit the concept of polypharmacology and describe a new empirical model, the ‘therapeutic handshake’, to predict efficacy/safety of compound combinations of either natural or synthetic origin.”

http://www.ncbi.nlm.nih.gov/pubmed/26434643

A comparison of cannabidiolic acid with other treatments for anticipatory nausea using a rat model of contextually elicited conditioned gaping.

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“The effectiveness of cannabidiolic acid (CBDA) was compared with other potential treatments for anticipatory nausea (AN), using a rat model of contextually elicited conditioned gaping reactions.

The potential of ondansetron (OND), Δ(9)-tetrahydrocannabinol (THC), chlordiazepoxide (CDP), CBDA, and co-administration of CBDA and tetrahydrocannabinolic acid (THCA) to reduce AN and modify locomotor activity was evaluated…

CBDA has therapeutic potential as a highly potent and selective treatment for AN without psychoactive or locomotor effects.”

http://www.ncbi.nlm.nih.gov/pubmed/24595502