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Alzheimer's may Be Prevented by Naturally Occurring Brain Fatty Acids

by Rajashri on August 23, 2008 at 3:45 PM
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 Alzheimer's may Be Prevented by Naturally Occurring Brain Fatty Acids

The mechanism to protect brain cells from diseases like Alzheimer's and Parkinson's has been found by researchers.

A study, led by Chu Chen, PhD, Associate Professor of Neuroscience at LSU Health Sciences Center New Orleans, has provided evidence that one of the only naturally occurring fatty acids in the brain that has the ability to interact with the receptors originally identified as the targets of THC (the psychoactive component of marijuana) can help to protect brain cells from these neurodegenerative diseases.

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The study focuses on the cellular and molecular mechanisms of inflammation, specifically the role these relatively recently discovered endogenous cannabinoids can play in the control of COX-2 and other cyclooxygenases.

COX-2 is a key player in neuroinflammation and has been implicated in the development of neurodegenerative diseases and worsening of damage from such insults as traumatic brain injury and stroke.
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The researchers have shown that endocannabinoid 2-arachidonoylglycerol (2-AG) functions as an endogenous COX-2 inhibitor, turning off the production of COX-2 which normally goes into overdrive in response to pro-inflammatory and certain types of toxic stimuli, resulting in the injury or death of brain cells.

The researchers also revealed the specific signaling pathways that regulate the 2-AG suppression of COX-2.

"Our findings provide a basis for opening up new therapeutic approaches to protect neurons from inflammation and toxicity-induced neurodegeneration," Chen said.

"Selective COX-2 inhibitors were thought to be a promising medicine in treating neurodegenerative diseases, stroke, cancers and inflammation-related diseases like arthritis; however, the occurrence of a series of cardiovascular complications in patients receiving COX-2 inhibitors has led to their recent withdrawal from the market and limits on their usages. Our research has shown that the use of endogenous cannabinoid 2-AG may avoid such side effects.

"Therefore, elevation of endogenous 2-AG levels by facilitating its production, inhibiting its decomposition, or directly supplying 2-AG may result in treatment advances to prevent the devastation of disorders like stroke, Alzheimer's and traumatic brain injury," Chen added.

The study is published in the August 15, 2008 issue of the Journal of Biological Chemistry.

Source: ANI
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