Cannabis Finds Its Way into Treatment of Crohn’s Disease.

“In ancient medicine, cannabis has been widely used to cure disturbances and inflammation of the bowel. A recent clinical study now shows that the medicinal plant Cannabis sativa has lived up to expectations and proved to be highly efficient in cases of inflammatory bowel diseases.

In a prospective placebo-controlled study, it has been shown what has been largely anticipated from anecdotal reports, i.e. that cannabis produces significant clinical benefits in patients with Crohn’s disease. The mechanisms involved are not yet clear but most likely include peripheral actions on cannabinoid receptors 1 and 2, and may also include central actions.”

http://www.ncbi.nlm.nih.gov/pubmed/24356243

“In their prospective study, Naftali et al. used THC-free Cannabis as placebo with no other cannabinoids present. However, we should consider that also other ingredients of Cannabis, such as cannabidiol, cannabigerol, and tetrahydrocannabivarine (THCV), all of them non-psychotropic components of Cannabis, have proven antiinflammatory effects in experimental intestinal inflammation. Their actions partly involve non-CB receptor mechanisms via, for instance, peroxisome proliferator-activated receptors (PPAR) and transient receptor potential cation channels subfamily V receptors (TRPV) and should be regarded as additive beneficial effects of Cannabis in the improvement of colitis in addition to THC-mediated effects.

 …an 8-week treatment with THC-rich Cannabis caused a decrease of the Crohn’s disease activity index (CDAI) in 90% of patients without producing significant side effects…

In summary, in agreement with the ancient use of Cannabis in intestinal disturbances and one decade of animal research, Cannabis was shown in a clinical trial to reduce symptoms in patients with CD. This elegant translation should be followed by larger trials confirming these results and by trials establishing the involved mechanisms to open a promising direction for future treatment of IBD.”

Full-text: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4076530/

Expression and functional relevance of cannabinoid receptor 1 in hodgkin lymphoma.

“Cannabinoid receptor 1 (CB1) is expressed in certain types of malignancies. An analysis of CB1 expression and function in Hodgkin lymphoma (HL), one of the most frequent lymphomas, was not performed to date.

We examined the distribution of CB1 protein in primary cases of HL. Using lymphoma derived cell lines, the role of CB1 signaling on cell survival was investigated.

CONCLUSIONS: The present study identifies CB1 as a feature of HL, which might serve as a potential selective target in the treatment of Hodgkin lymphoma.”

http://www.ncbi.nlm.nih.gov/pubmed/24349109

Improved Cardiac and Neurologic Outcomes With Postresuscitation Infusion of Cannabinoid Receptor Agonist WIN55, 212-2 Depend on Hypothermia in a Rat Model of Cardiac Arrest*.

“OBJECTIVES: To investigate the mechanisms of improved myocardial and neurological function and survival following IV administration of cannabinoid receptor agonist, WIN55, 212-2 in a rat model of cardiac arrest…

CONCLUSIONS: In a rat model of cardiac arrest, better postresuscitation myocardial function, neurological deficit scores, and longer duration of survival were observed by the pharmacologically induced hypothermia with WIN55, 212-2. The improved outcomes of cardiopulmonary resuscitation following administration of WIN55, 212-2 appeared to be the results from its temperature reduction effects.”

http://www.ncbi.nlm.nih.gov/pubmed/24346544

Selective CB2 receptor activation ameliorates EAE by reducing Th17 differentiation and immune cell accumulation in the CNS.

“CB2, the cannabinoid receptor expressed primarily on hematopoietic cells and activated microglia, mediates the immunoregulatory functions of cannabinoids. The involvement of CB2 in EAE has been demonstrated by using both endogenous and exogenous ligands…

the combined effect on Th17 differentiation and immune cell accumulation into the CNS, emphasize the relevance of CB2 selective ligands as potential therapeutic agents in neuroinflammation.”

http://www.ncbi.nlm.nih.gov/pubmed/24342422

Antineoplastic Effect of WIN 55,212-2, a Cannabinoid Agonist, in a Murine Xenograft Model of Gastric Cancer.

“We have previously reported the antineoplastic effects of a cannabinoid agonist in gastric cancer cells. Our aim was to evaluate this in a murine xenograft model…

Conclusion: WIN 55,212-2 has antineoplastic effect on the gastric cancers in in vivo model.”

http://www.ncbi.nlm.nih.gov/pubmed/24335109

Cannabinoid System of the Lateral Septum in the Modulation of Anxiety-like Behaviors in Rats.

“A large body of evidence suggests that the cannabinoid CB1 receptor plays a key role in the regulation of emotional behaviors. The present study was designed to evaluate the effects of CB1 agonist and antagonist on anxiety-like behaviors in the lateral septum (LS) region of the rat brain using elevated plus maze test…

The results suggest that the cannabinoid system of the lateral septum modulates anxiety-like behavior through CB1 receptor.”

http://www.ncbi.nlm.nih.gov/pubmed/24329144

Marijuana treatments for autoimmune disorders

“Researchers from the University of South Carolina say that tetrahydrocannabinol, the principal constituent of marijuana, may have another medical use – treating those with autoimmune disorders.

Tetrahydrocannabinol (THC) is known to have analgesic effects so can be used to treat pain. It also aids relaxation and can reduce feelings of nausea and stimulate appetite…

Now, a new study, published in the Journal of Biological Chemistry, explores how analgesicmicroRNAs are influenced by THC.

MicroRNAs (miRNAs) are small, single-stranded, non-coding RNAs that play a vital role in regulating gene expression. And the authors claim that the ability to alter miRNA expression may be the key to successful treatment for many autoimmune diseases, including multiple sclerosisarthritis and type 1 diabetes.”

More: http://www.medicalnewstoday.com/articles/269432.php

Unique effects of compounds active at both cannabinoid and serotonin receptors during stroke.

“We reported previously that both a cannabinoid receptor 2 (CB2R) agonist and a cannabinoid receptor 1 (CB1R) antagonist were protective in the treatment of transient middle cerebral artery occlusion/reperfusion injury (MCAO/R) and that they acted in a synergistic manner when administered in combination. The goal of the current study was to determine which of the potential cannabinoid receptors participate in the protective effects of this drug combination in a mouse model of MCAO/R.

The effects of administration of the CB2R agonist/CB1R antagonist combination on infarct size and cerebral blood flow during a 1-h occlusion were tested…

In conclusion, administration of the CB2R agonist/CB1R antagonist combination causes a significant reduction in infarct size in the MCAO/R model. The protective effect involves both the CB2R and the 5-HT1A receptor. Neither the CB1R nor the TRPV1 receptors appear to participate in this response.”

http://www.ncbi.nlm.nih.gov/pubmed/24323810

Effects of intra-prelimbic prefrontal cortex injection of cannabidiol on anxiety-like behavior: Involvement of 5HT1A receptors and previous stressful experience.

“The prelimbic medial prefrontal cortex (PL) is an important encephalic structure involved in the expression of emotional states. In a previous study, intra-PL injection of cannabidiol (CBD), a major non-psychotomimetic cannabinoid present in the Cannabis sativa plant, reduced the expression of fear conditioning response…

CBD caused an anxiolytic, rather than anxiogenic, effect…

Taken together, these results suggest that CBD modulation of anxiety in the PL depend on 5HT1A-mediated neurotransmission and previous stressful experience.”

http://www.ncbi.nlm.nih.gov/pubmed/24321837

Harvard: Marijuana Doesn’t Cause Schizophrenia

Harvard: Marijuana Doesn't Cause Schizophrenia

“Good news for people who’ve worried that smoking too much marijuana (cannabis) — especially as a teenager — might lead to some dramatic problems in the future, even  schizophrenia.

New research from Harvard Medical School, in a comparison between families with a history of schizophrenia and those without, finds little support for marijuana use as a cause of schizophrenia.

“The results of the current study suggest that having an increased familial morbid risk for schizophrenia may be the underlying basis for schizophrenia in cannabis users and not cannabis use by itself,” note the researchers.”

More: http://psychcentral.com/news/2013/12/10/harvard-marijuana-doesnt-cause-schizophrenia/63148.html

“A controlled family study of cannabis users with and without psychosis.” http://www.ncbi.nlm.nih.gov/pubmed/24309013