Tag Archives: cannabinoid receptors

Endocannabinoid system and cannabinoids in neurogenesis – new opportunities for neurological treatment? Reports from experimental studies.

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“Neurogenesis is one of the most important phenomenona affecting human life. This process consists of proliferation, migration and differentiation of neuroblasts and synaptic integrations of newborn neurons.
Proliferation of new cells continues into old age, also in humans, although the most extensive process of cell formation occurs during the prenatal period. It is possible to distinguish two regions in the brain responsible for neurogenesis: the dentate gyrus (DG) of the hippocampus and the sub-ventricular zone (SVZ). Hippocampal neurogenesis is very sensitive to various physiological and pathological stimuli.
The functional integration of the newly-born dentate granule cells into hippocampal circuitry, and their ability to mediate long-term potentiation in DG, has led to the hypothesis that neurogenesis in the adult brain may play a key role in learning and memory function, as well as cognitive dysfunction in some diseases.
Brain disorders, such as neurodegenerative diseases or traumatic brain injuries, significantly affect migration, proliferation and differentiation of neural cells. In searching for the best neurological drugs protecting neuronal cells, stimulating neurogenesis, while also developing no side-effects, endocannabinoids proved to be a strong group of substances having many beneficial properties.
Therefore, the latest data is reviewed of the various experimental studies concerning the analysis of the most commonly studied cannabinoids and their impact on neurogenesis.”
http://www.jpccr.eu/Endocannabinoid-system-and-cannabinoids-in-neurogenesis-new-opportunities-for-neurological,74636,0,2.html
http://www.thctotalhealthcare.com/tag/neurogenesis/
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Acute ethanol inhibition of adult hippocampal neurogenesis involves CB1 cannabinoid receptor signaling.

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“Chronic ethanol exposure has been found to inhibit adult hippocampal neurogenesis in multiple models of alcohol addiction. Together, these findings suggest that acute CB1R cannabinoid receptor activation and binge ethanol treatment reduce neurogenesis through mechanisms involving CB1R. ”   https://www.ncbi.nlm.nih.gov/pubmed/29417597  http://onlinelibrary.wiley.com/doi/10.1111/acer.13608/abstract “Alcohol-induced neurodegeneration” http://www.diva-portal.org/smash/record.jsf?pid=diva2%3A666727&dswid=174

“Defective Adult Neurogenesis in CB1 Cannabinoid Receptor Knockout Mice.  Pharmacological studies suggest a role for CB1 cannabinoid receptors (CB1R) in regulating neurogenesis in the adult brain.”  http://molpharm.aspetjournals.org/content/66/2/204.full

“Activation of Type 1 Cannabinoid Receptor (CB1R) Promotes Neurogenesis in Murine Subventricular Zone Cell Cultures”   https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3660454/

“Several studies and patents suggest that the endocannabinoid system has neuro-protective properties and might be a target in neurodegenerative diseases”  https://www.ncbi.nlm.nih.gov/pubmed/27364363 “The endocannabinoid system and neurogenesis in health and disease.”   https://www.ncbi.nlm.nih.gov/pubmed/17404371

“The role of cannabinoids in adult neurogenesis. Pharmacological targeting of the cannabinoid system as a regulator of neurogenesis may prove a fruitful strategy in the prevention or treatment of mood or memory disorders.”  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4543605/

“Regulation of Adult Neurogenesis by Cannabinoids”  https://www.researchgate.net/publication/264424221_Regulation_of_Adult_Neurogenesis_by_Cannabinoids

“Delta-9-Tetrahydrocannabinol (∆9-THC) Induce Neurogenesis and Improve Cognitive Performances of Male Sprague Dawley Rats. Administration of ∆9-THC was observed to enhance the neurogenesis in the brain, especially in hippocampus thus improved the cognitive function of rats.”  https://www.ncbi.nlm.nih.gov/pubmed/28933048

“Cannabidiol Reduces Aβ-Induced Neuroinflammation and Promotes Hippocampal Neurogenesis through PPARγ Involvement. CBD was observed to stimulate hippocampal neurogenesis.”  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3230631/

“Cannabinoids promote embryonic and adult hippocampus neurogenesis and produce anxiolytic- and antidepressant-like effects. Chronic administration of the major drugs of abuse including opiates, alcohol, nicotine, and cocaine has been reported to suppress hippocampal neurogenesis in adult rats. Plant-derived, or synthetic cannabinoids may promote hippocampal neurogenesis. Cannabinoids appear to be the only illicit drug whose capacity to produce increased hippocampal newborn neurons is positively correlated with its anxiolytic- and antidepressant-like effects. In summary, since adult hippocampal neurogenesis is suppressed following chronic administration of opiates, alcohol, nicotine, and cocaine, the present study suggests that cannabinoids are the only illicit drug that can promote adult hippocampal neurogenesis following chronic administration.”  https://www.jci.org/articles/view/25509

 

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Involvement of spinal cannabinoid receptors in the antipruritic effects of WIN 55,212-2, a cannabinoid receptor agonist.

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“Cannabinoids have been used for their analgesic and euphoric effects for millennia, but recently the antipruritic effects of cannabis have been discovered. Considering the similarities between pain and itch sensations, we hypothesized that cannabinoid receptors may play a role in the antipruritic effects of cannabinoids. Our findings support prior researches indicating that cannabinoids exert antipruritic effects. Moreover, our results show that the antipruritic effects of cannabinoids are partially mediated by spinal CB1 receptors.” https://www.ncbi.nlm.nih.gov/pubmed/29424035 http://onlinelibrary.wiley.com/doi/10.1111/ced.13398/abstract

“antipruritic: 1. Preventing or relieving itching. 2. An agent that relieves itching.”   https://medical-dictionary.thefreedictionary.com/antipruritic

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The Endocannabinoid System and Heart Disease: The Role of Cannabinoid Receptor Type 2.

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Image result for Cardiovasc Hematol Disord Drug Targets. “Decades of research has provided evidence for the role of the endocannabinoid system in human health and disease. This versatile system, consisting of two receptors (CB1 and CB2), their endogenous ligands (endocannabinoids), and metabolic enzymes has been implicated in a wide variety of disease states, ranging from neurological disorders to cancer. CB2 has gained much interest for its beneficial immunomodulatory role that can be obtained without eliciting psychotropic effects through CB1. Recent studies have shed light on a protective role of CB2 in cardiovascular disease, an ailment which currently takes more lives each year in Western countries than any other disease or injury. By use of CB2 knockout mice and CB2-selective ligands, knowledge of how CB2 signaling affects atherosclerosis and ischemia has been acquired, providing a major stepping stone between basic science and translational clinical research. Here, we summarize the current understanding of the endocannabinoid system in human pathologies and provide a review of the results from preclinical studies examining its function in cardiovascular disease, with a particular emphasis on possible CB2-targeted therapeutic interventions to alleviate atherosclerosis.” https://www.ncbi.nlm.nih.gov/pubmed/29412125 “Researchers suggest that THC and other cannabinoids, which are active at CB2, the cannabinoid receptor expressed on immune cells, may be valuable in treating atherosclerosis.” https://www.medscape.com/viewarticle/787468

“Cardiovascular disease: New use for cannabinoids”  https://www.nature.com/articles/nrd1733

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