Tag Archives: treatment

Cannabidivarin-rich cannabis extracts are anticonvulsant in mouse and rat via a CB1 receptor-independent mechanism.

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“Epilepsy is the most prevalent neurological disease and is characterised by recurrent seizures. Here we investigate: (i) the anticonvulsant profiles of cannabis-derived botanical drug substances (BDS) rich in cannabidivarin (CBDV) and containing cannabidiol (CBD) in acute in vivo seizure models and (ii) the binding of CBDV BDSs and their components at cannabinoid CB1 receptors.

CDBV BDSs exerted significant anticonvulsant effects… 

CONCLUSIONS AND IMPLICATIONS:

CBDV BDSs exerted significant anticonvulsant effects in three models of seizure that were not mediated by the CB1 cannabinoid receptor, and were of comparable efficacy to purified CBDV.

These findings strongly support the further clinical development of CBDV BDSs for treatment of epilepsy.”

http://www.ncbi.nlm.nih.gov/pubmed/23902406

“Cannabidivarin is anticonvulsant in mouse and rat… These results indicate that CBDV is an effective anticonvulsant in a broad range of seizure models.”  http://www.ncbi.nlm.nih.gov/pubmed/22970845

THC, found in cannabis, shown to be effective in the treatment of brain tumors

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“In 2000, scientists at the Complutense University of Madrid carried out an extensive experiment, testing the effects of THC on cancerous brain cells in laboratory rats. Their discoveries were nothing short of amazing, as THC had effectively managed to destroy all cancer cells, while leaving healthy cells unaffected.
 
 Research into the effects of THC on glioblastoma would have had the potential to revolutionize available cancer treatments, yet due to insufficient funding and poor public exposure, the science team was unable to further their research.Manuel Guzman explained that “cannabinoids are selective antitumor compounds, as they can kill tumor cells without affecting their non-transformed counterparts.” In contrast to this, chemotherapy, the prevalent anticancer treatment of today, consists of a combination of antineoplastic drugs that have devastating physical and psychological side-effects… 
 
THC works by triggering the build-up of a chemical messenger known as ceramide, which in turn induces apoptosis (or programmed cell death) in mutated tumor cells.
Subsequent research into the properties of THC has revealed that it is among the very few naturally occurring, harmless substances that are capable of inducing programmed cell death in cancerous cells. Other substances with this property include anandamide, other cannabinoids and tumor necrosis factors produced by the immune system in its attempt to fight cancer.
 
After months of effort to obtain funding for testing the medical effects of THC on human tissues, the Madrid science team was forced to abandon this project, although there is currently no effective treatment available for malignant brain tumors.” 
 
 

Cannabidiol enhances the inhibitory effects of Δ9-tetrahydrocannabinol on human glioblastoma cell proliferation and survival

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Molecular Cancer Therapeutics

“Δ9-THC and other cannabinoids can act as direct anticancer agents in multiple types of cancer in culture and in vivo. 

Individually, Δ9-THC and CBD can activate distinct pathways in glioblastoma cells that ultimately culminate in inhibition of cancer cell growth and invasion as well as induction of cell death.

We hypothesized that, if the individual agents were combined, a convergence on shared pathways may ensue leading to an enhanced ability of the combination treatment to inhibit certain cancer cell phenotypes.

We found this to be true in this investigation.

CBD enhances the inhibitory effects of Δ9-THC on glioblastoma cell growth.

Cannabidiol significantly improved the inhibitory effects of Δ9-tetrahydrocannabinol on glioblastoma cell proliferation and survival.

The Combination Treatment of Δ9-THC and Cannabidiol Inhibits Cell Cycle and Induces Apoptosis.

Our results suggest that the addition of CBD to Δ9-THC may improve the overall effectiveness of Δ9-THC in the treatment of glioblastoma in cancer patients.”

http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2806496/

http://mct.aacrjournals.org/content/9/1/180.full

“CBD Enhances the Anticancer Effects of THC”  https://www.scribd.com/document/50154001/CBD-Enhances-the-Anticancer-Effects-of-THC-Journal-MCT-Marcu

Cannabis-Linked Cell Receptor Might Help Prevent Colon Cancer

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“A cannabinoid receptor lying on the surface of cells may help suppress colorectal cancer, say U.S. researchers. When the receptor is turned off, tumor growth is switched on. Cannabinoids are compounds related to the tetrahydrocannabinol (THC) found in the cannabis plant.”

Photo of colon composite

“It’s already known that the receptor, CB1, plays a role in relieving pain and nausea, elevating mood and stimulating appetite by serving as a docking station for the cannabinoid group of signaling molecules. This study suggests that CB1 may offer a new path for cancer prevention or treatment.”

More: http://www.medicinenet.com/script/main/art.asp?articlekey=91511

Cannabis-Linked Cell Receptor Might Help Prevent Colon Cancer – TheWashingtonPost

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“A cannabinoid receptor lying on the surface of cells may help suppress colorectal cancer, say U.S. researchers. When the receptor is turned off, tumor growth is switched on.

Cannabinoids are compounds related to the tetrahydrocannabinol (THC) found in the cannabis plant.

It’s already known that the receptor, CB1, plays a role in relieving pain and nausea, elevating mood and stimulating appetite by serving as a docking station for the cannabinoid group of signaling molecules. This study suggests that CB1 may offer a new path for cancer prevention or treatment.”

More: http://articles.washingtonpost.com/2008-08-01/news/36873908_1_colorectal-cancer-tumor-growth-smaller-tumors

Cannabinoid cell surface receptor plays a tumor-suppressing role in human colorectal cancer

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“New preclinical research shows that cannabinoid cell surface receptor CB1 plays a tumor-suppressing role in human colorectal cancer, scientists report in the Aug. 1 edition of the journal Cancer Research.

CB1 is well-established for relieving pain and nausea, elevating mood and stimulating appetite by serving as a docking station for the cannabinoid group of signaling molecules. It now may serve as a new path for cancer prevention or treatment.

“We’ve found that CB1 expression is lost in most colorectal cancers, and when that happens a cancer-promoting protein is free to inhibit cell death,” said senior author Raymond DuBois, M.D., Ph.D., provost and executive vice president of The University of Texas M. D. Anderson Cancer Center.

DuBois and collaborators from Vanderbilt-Ingram Cancer Center also show that CB1 expression can be restored with an existing drug, decitabine. They found that mice prone to developing intestinal tumors that also have functioning CB1 receptors develop fewer and smaller tumors when treated with a drug that mimics a cannabinoid receptor ligand. Ligands are molecules that function by binding to specific receptors. Agonists are synthetic molecules that mimic the action of a natural molecule.

“Potential application of cannabinoids as anti-tumor drugs is an exciting prospect, because cannabinoid agonists are being evaluated now to treat the side-effects of chemotherapy and radiation therapy,” DuBois said. “Turning CB1 back on and then treating with a cannabinoid agonist could provide a new approach to colorectal cancer treatment or prevention.”

Cannabinoids are a group of ligands that serve a variety of cell-signaling roles. Some are produced by the body internally (endocannabinoids). External cannabinoids include manmade versions and those present in plants, most famously the active ingredient in marijuana (THC).”

More: http://www.news-medical.net/news/2008/08/03/40485.aspx

Cannabinoids can inhibit tumor cell growth in highly invasive cancers

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“A new study has found that Cannabinoids, the active components in marijuana, may aid in inhibiting tumor cell growth in highly invasive cancers.”

Fig. 4

“Although, Cannabinoids are used in reducing the side effects of cancer treatment, such as pain, weight loss, and vomiting, evidences indicate that they might even help in suppressing tumor invasion.

Robert Ramer, Ph.D., and Burkhard Hinz, Ph.D., of the University of Rostock in Germany investigated whether and by what mechanism cannabinoids hold back tumor cell invasion.

It was found that Cannabinoids did suppress tumor cell invasion and stimulated TIMP-1 expression.

TIMP-1 is an inhibitor of a group of enzymes involved in tumor cell invasion.

“To our knowledge, this is the first report of TIMP-1-dependent anti-invasive effects of cannabinoids,” the authors said.

They added: “This signaling pathway may play an important role in the antimetastatic action of cannabinoids, whose potential therapeutic benefit in the treatment of highly invasive cancers should be addressed in clinical trials.”

The study was published in the Journal of the National Cancer Institute (ANI)”

“Inhibition of Cancer Cell Invasion by Cannabinoids via Increased Expression of Tissue Inhibitor of Matrix Metalloproteinases-1” http://jnci.oxfordjournals.org/content/100/1/59.long

http://www.topnews.in/health/cannabinoids-can-inhibit-tumor-cell-growth-highly-invasive-cancers-2380 

The use of cannabinoids in chronic pain.

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“We present the case of a 56-year-old man who developed chronic pain following the excision of a facial cancer that was poorly controlled despite multiple analgesic medications. Following the starting of nabilone (a synthetic cannabinoid) his pain control was greatly improved and this had a huge impact on his quality of life.

We also managed to significantly reduce his doses of opioid analgesia and ketamine.

We review the current literature regarding the medicinal use of cannabinoids, with an emphasis on chronic pain, in an attempt to clarify their role and how to select patients who may benefit from this treatment.”

http://www.ncbi.nlm.nih.gov/pubmed/23893276

Cannabidiol Normalizes Caspase 3, Synaptophysin, and Mitochondrial Fission Protein DNM1L Expression Levels in Rats with Brain Iron Overload: Implications for Neuroprotection.

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“We have recently shown that chronic treatment with cannabidiol (CBD) was able to recover memory deficits induced by brain iron loading in a dose-dependent manner in rats.

 Brain iron accumulation is implicated in the pathogenesis of neurodegenerative diseases, including Parkinson’s and Alzheimer’s, and has been related to cognitive deficits in animals and human subjects.

…we have analyzed the expression level of brain proteins involved with mitochondrial fusion and fission mechanisms (DNM1L and OPA1), the main integral transmembrane protein of synaptic vesicles (synaptophysin), and caspase 3, an apoptosis-related protein, to gain a better understanding of the potential of CBD in restoring the damage caused by iron loading in rats.

We found that CBD rescued iron-induced effects…

Our results suggest that iron affects mitochondrial dynamics, possibly trigging synaptic loss and apoptotic cell death and indicate that CBD should be considered as a potential molecule with memory-rescuing and neuroprotective properties to be used in the treatment of cognitive deficits observed in neurodegenerative disorders.”

http://www.ncbi.nlm.nih.gov/pubmed/23893294

Memory-rescuing effects of cannabidiol in an animal model of cognitive impairment relevant to neurodegenerative disorders.

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“Cannabidiol, the main nonpsychotropic constituent of Cannabis sativa, possesses a large number of pharmacological effects including anticonvulsive, sedative, hypnotic, anxiolytic, antipsychotic, anti-inflammatory, and neuroprotective, as demonstrated in clinical and preclinical studies.

 Many neurodegenerative disorders involve cognitive deficits, and this has led to interest in whether cannabidiol could be useful in the treatment of memory impairment associated to these diseases…

We used an animal model of cognitive impairment induced by iron overload in order to test the effects of cannabidiol in memory-impaired rats…

RESULTS:

A single acute injection of cannabidiol at the highest dose was able to recover memory in iron-treated rats. Chronic cannabidiol improved recognition memory in iron-treated rats. Acute or chronic cannabidiol does not affect memory in control rats.

CONCLUSIONS:

The present findings provide evidence suggesting the potential use of cannabidiol for the treatment of cognitive decline associated with neurodegenerative disorders.

 Further studies, including clinical trials, are warranted to determine the usefulness of cannabidiol in humans suffering from neurodegenerative disorders.”

http://www.ncbi.nlm.nih.gov/pubmed/21870037