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Huntington’s Disease Effected by (CBG)

by 420insight on April 1, 2015
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Huntington’s Disease

Huntington’s is a severely debilitating neurodegenerative disease caused by a genetic mutation which leads to creation of mutated “huntingtin” protein (normally, the huntingtin protein functions to preserve cells of the nervous system [neurons], especially in the brain). Although the exact mechanism is not fully known, the development of this mutated protein leads to destruction of neurons in the basal ganglia, a part of the brain involved in movement regulation, as well as other areas.

Patients with Huntington’s Disease tend to experience dysfunction in movement, cognition, and normal psychiatric functioning, and symptoms include severe, involuntary writhing movements known as “chorea”, dystonia (involuntary tightening of muscles which results in “repetitive or twisting movements”), progressing dementia characterized by deficits in maintaining cognitive flexibility, behavior awareness, and impulse control, mood swings, irritability, depression (many patients commit suicide as a result of this biologically- and psychologically-based symptom), and others. Symptoms ordinarily begin in the 30s-40s, and patients usually pass away within 10 to 20 years of symptom onset, often as a result of infection. There is no known cure for HD, although medications are available to manage symptoms.

Huntington’s Disease is a genetic disorder that runs in families. If a child inherits the mutated HTT gene from a parent, they will eventually develop Huntington’s Disease at some point in their life. No current treatments can stop or reverse the disease’s progress, and drugs used for symptomatic relief have side effects ranging from fatigue to restlessness.The best possible treatment would be one that directly targets abnormal genes. Interestingly, a compound from cannabis may have this ability.

How Cannabigerol (CBG) Fights Huntington’s Disease

huntingtons choreaMost of the research on cannabis has been dedicated to tetrahydrocannabinol (THC) and cannabidiol (CBD), but there are dozens of other cannabinoids with unique medical potential as well. Cannabigerol (CBG) is one of the lesser-known molecules with especially significant potential. All of the other cannabinoids are derived from CBG, so it makes sense this cannabinoid has some profound medical benefits.

A January 2015 study in Neurotherapeutics illuminated several mechanisms by which CBG may help treat symptoms associated with Huntington’s Disease. Researchers used two different in vivo models of Huntington’s Disease to most comprehensively ascertain CBG’s benefits.

In the first model, mice were given 3-nitropropionate, a toxin that induces Huntington’s Disease-like symptoms. CBG countered a number of the toxin’s effects by reducing proinflammatory markers and reactive microgliosis (a form of neuro-inflammation). It also restored the antioxidant defenses that were damaged by 3NP administration, ultimately protecting neurons and improving motor function.

In the second model, researchers used R6/2 transgenic mice, which are genetically modified to display features of Huntington’s Disease, to examine CBG’s effects. The improvement in motor function was not as strong as the 3-NP-intoxicated mice, but it was still significant.

Most interestingly, CBG had a significant effect on at least seven genes linked to Huntington’s Disease. The cannabinoid was able to partially normalize the expression of the genes, all of which were impaired in the R6/2 mice. Furthermore, it reduced the accumulation of mutant Huntington protein, which may be responsible for the majority of Huntington’s Disease symptoms.

huntingtons chorea testingCannabigerol (CBG) also improved expression of brain-derived neurotrophic growth factor, insulin-like growth factor-1, and peroxisome proliferator-activated receptor-gamma, which may also confer therapeutic benefits. Indeed, a 2012 study found a CBG-like compound alleviated neuroinflammation at least partially through a PPAR-gamma-related mechanism.

How Cannabinoids May Benefit Huntington’s Disease

Several of the physiological problems associated with HD may be treated with phytocannabinoids. Like many neurodegenerative disorders, excitotoxicity (overstimulation of neurons) and oxidative stress (imbalance of oxidants and antioxidants) likely contribute to the cell death seen in Huntington’s Disease.

A 2013 study with animals demonstrated that CBD can reduce excitoxicity, act as an antioxidant, and modulate inflammation as part of its neuroprotective effects. Additionally, a 2012 review study posited that cannabinoids may benefit Huntington’s Disease through anti-inflammatory, neuroprotective, and neuroregenerative properties.

Although no clinical trials have been carried out, cannabinoids almost certainly have a place in the future treatment of Huntington’s Disease.

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