Neuroprotective effects of the cannabigerol quinone derivative VCE-003.2 in SOD1G93A transgenic mice, an experimental model of amyotrophic lateral sclerosis.

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“Antioxidant phytocannabinoids, synthetic compounds targeting the CB2 receptor, and inhibitors of the endocannabinoid inactivation afforded neuroprotection in SOD1G93A mutant mice, a model of ALS. These effects may involve the activation of PPAR-γ too.

Here, we have investigated the neuroprotective effects in SOD1G93A mutant mice of the cannabigerol derivative VCE-003.2, which works as by activating PPAR-γ.

As expected, SOD1G93Atransgenic mice experienced a progressive weight loss and neurological deterioration, which was associated with a marked loss of spinal cholinergic motor neurons, glial reactivity, and elevations in several biochemical markers (cytokines, glutamate transporters) that indirectly reflect the glial proliferation and activation in the spinal cord. The treatment with VCE-003.2 improved most of these neuropathological signs.

It attenuated the weight loss and the anomalies in neurological parameters, preserved spinal cholinergic motor neurons, and reduced astroglial reactivity. VCE-003.2 also reduced the elevations in IL-1β and glial glutamate transporters. Lastly, VCE-003.2 attenuated the LPS-induced generation of TNF-α and IL-1β in cultured astrocytes obtained from SOD1G93Atransgenic newborns, an effect also produced by rosiglitazone, then indicating a probable PPAR-γ activation as responsible of its neuroprotective effects.

In summary, our results showed benefits with VCE-003.2 in SOD1G93A transgenic mice supporting PPAR-γ as an additional neuroprotective target available for cannabinoids in ALS. Such benefits would need to be validated in other ALS models prior to be translated to the clinical level.”

https://www.ncbi.nlm.nih.gov/pubmed/30076846

https://www.sciencedirect.com/science/article/abs/pii/S0006295218303198

EHP-101, an oral formulation of the cannabidiol aminoquinone VCE-004.8, alleviates bleomycin-induced skin and lung fibrosis.

Elsevier

“Systemic sclerosis (SSc) or scleroderma is a chronic multi-organ autoimmune disease characterized by vascular, immunological, and fibrotic abnormalities.

The etiology of SSc is unknown, but there is growing evidence that dysfunction of the endocannabinoid system (ECS) plays a critical role in its development.

Since the semi-synthetic cannabinoquinoid VCE-004.8 could alleviate bleomycin (BLM)-induced skin fibrosis, we have investigated an oral lipid formulation (EHP-101) of this dual PPARγ/CB2 receptors activator for the prevention of skin- and lung fibrosis and of collagen accumulation in BLM challenged mice.

Taken together, these data provide a rationale for further developing VCE-004.8 as an orally active agent to alleviate scleroderma and, possibly, other fibrotic diseases as well.”

Effect of chronic THC administration in the reproductive organs of male mice, spermatozoa and in vitro fertilization.

Biochemical Pharmacology

“The increased use of cannabis as a therapeutic drug in recent years has raised some concerns due to its potential effects on reproductive health. With regards to the male, the endocannabinoid system is involved in the spermatogenesis and in the sperm function.

The chronic use of tetrahidrocannabinol (THC) has been associated with sperm anomalies, decreased sperm motility and structural changes in the testis. However, whether THC affects sperms ability to fertilize and to generate embryos remains unclear.

The aim of this study was to evaluate this effect using a mice model of THC chronic treatment. For this purpose, a chronic treatment with THC was carried out. Mice were randomly allocated into two groups: an experimental group treated with a daily dose of 10 mg/kg-body weight THC for a period of 30 days and a control group treated with a vehicle.

The THC-mice cortex showed a significant decrease of mRNA of Cnr1 compared to control-mice while, in the testis, the expression of Cnr1 was not affected. The weight of testis and epididymis and the histological analysis did not show any change between groups.

On the other hand, no changes were observed in the sperm motility or the sperm concentration. The chronic use of THC did not generate any methylation change in the three CpG regions of Cnn1 analysed, neither in the brain nor in the embryos generated by in vitro fertilization (IVF).

Finally, the embryo production by IVF was no different using spermatozoa from both THC and control mice. This work contradicts the belief that THC consumption has a negative effect on male reproductive processes.”

Cannabinoid pharmacology and therapy in gut disorders.

Biochemical Pharmacology

“Cannabis sp and their products (marijuana, hashish…), in addition to their recreational, industrial and other uses, have a long history for their use as a remedy for symptoms related with gastrointestinal diseases.

After many reports suggesting these beneficial effects, it was not surprising to discover that the gastrointestinal tract expresses endogenous cannabinoids, their receptors, and enzymes for their synthesis and degradation, comprising the so-called endocannabinoid system.

This system participates in the control of tissue homeostasis and important intestinal functions like motor and sensory activity, nausea, emesis, the maintenance of the epithelial barrier integrity, and the correct cellular microenvironment. Thus, different cannabinoid-related pharmacological agents may be useful to treat the main digestive pathologies.

To name a few examples, in irritable bowel syndrome they may normalize dysmotility and reduce pain, in inflammatory bowel disease they may decrease inflammation, and in colorectal cancer, apart from alleviating some symptoms, they may play a role in the regulation of the cell niche.

This review summarizes the main recent findings on the role of cannabinoid receptors, their synthetic or natural ligands and their metabolizing enzymes in normal gastrointestinal function and in disorders including irritable bowel syndrome, inflammatory bowel disease, colon cancer and gastrointestinal chemotherapy-induced adverse effects (nausea/vomiting, constipation, diarrhea).”

Falling rates of marijuana dependence among heavy users.

Drug and Alcohol Dependence Home

“Marijuana use has become increasingly popular in the United States since the turn of the century, and typical use patterns among past-month marijuana users have intensified, raising concerns for an increase in cannabis use disorders (CUDs). Yet the population prevalence of CUDs has mostly remained flat. We analyzed trends in DSM-IV marijuana dependence among Daily/Near-Daily (DND) users, both overall and by age and gender, and considered potential explanations.

RESULTS:

Dependence among DND users fell by 39% (26.5%-16.1%; p < .001), with significant trend. No significant change is detected at the population level. Sub-group analysis shows a steep gradient for age but not for gender. Declines are robust to sub-group analysis, except for users over 50 years old. Among dependence symptoms, most showed significant declines: reducing important activities (p < .001); use despite emotional, mental, or physical problems (p < .001); failing attempts to cutback (p < .001); lots of time getting, using, or getting over marijuana (p < .01); and failing to keep limits set on use (p < .05). Reported tolerance showed no significant change.

CONCLUSIONS:

Though it is unclear why, the risk of dependence formation among heavy marijuana users appear to have declined since 2002. Further research is warranted regarding explanations related to state marijuana policies, product forms, or social context.”

https://www.ncbi.nlm.nih.gov/pubmed/30077891

https://www.drugandalcoholdependence.com/article/S0376-8716(18)30389-2/fulltext

Effects of non-euphoric plant cannabinoids on muscle quality and performance of dystrophic mdx mice.

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“Duchenne muscular dystrophy (DMD), caused by dystrophin deficiency, results in chronic inflammation and irreversible skeletal muscle degeneration. Moreover, the associated impairment of autophagy leads to the accumulation of damaged intracellular organelles that greatly contribute to the aggravation of muscle damage.

We explored the possibility of using non-euphoric compounds present in Cannabis sativa, including cannabidiol (CBD), cannabidivarin (CBDV) and tetrahydrocannabidivarin (THCV) to reduce inflammation, restore functional autophagy and positively enhance muscle function in vivo.

We found that CBD and CBDV promote the differentiation of murine C2C12 myoblast cells into myotubes by increasing [Ca2+ ]i mostly via TRPV1 activation, an effect that undergoes rapid desensitization. CBD and CBDV also promoted the differentiation of myoblasts from DMD donors. In primary cultures prepared from satellite cells isolated from healthy donors, not only CBD and CBDV but also THCV promoted myotube formation, in this case mostly via TRPA1 activation. In mdx mice, CBD (60 mg Kg-1), CBDV (60 mg Kg-1 ) prevented the loss of locomotor activity at two distinct ages (from 5 to 7 and 32 to 34 weeks of age). This effect was associated with a reduction in tissue and plasma pro-inflammatory markers, together with the restoration of autophagy.

CONCLUSION AND IMPLICATIONS:

We provide new insights into plant cannabinoid interactions with TRP channels in skeletal muscle, highlighting a potential opportunity for novel co-adjuvant therapies to prevent muscle degeneration in DMD patients.”

https://www.ncbi.nlm.nih.gov/pubmed/30074247

Association of Marijuana Use With Psychosocial and Quality of Life Outcomes Among Patients With Head and Neck Cancer

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“Is there a difference in quality of life and psychosocial outcomes between marijuana users and nonusers who have newly diagnosed head and neck cancer?

In this case-matched cohort study, 74 patients with newly diagnosed head and neck cancer who were marijuana users appeared to have quality of life differences compared with 74 who did not use marijuana, including decreased anxiety, pain, and depression and increased appetite and generalized feelings of well-being on the Edmonton Symptom Assessment System and the EuroQol-5D questionnaires.

Recreational marijuana use potentially improves quality of life and psychosocial symptoms among patients with newly diagnosed head and neck cancer.

Recreational use of C sativa potentially alleviates anxiety, depression, pain, and nausea and improves general well-being in patients with newly diagnosed HNC.”

https://jamanetwork.com/journals/jamaotolaryngology/fullarticle/2688527

“Cannabis Tied to QOL Benefits in Head and Neck Cancer. Patients on marijuana reported better depression and anxiety scores”  https://www.medpagetoday.com/hematologyoncology/othercancers/74387