Scientists have discovered a novel mechanism and role in the brain for hyaluronic acid -- a clear, gooey substance popularized by cosmetic and skin care products. Hyaluronic acid may be the key in how an immune signal moves from the blood stream to the brain, activating the brain's resident immune cells, the microglia. Findings from this study have important implications for better treatments for stroke, neurodegenerative diseases, as well as head injuries.
sciencedaily.com/releases/2....
Quan and collaborators from the Sichuan University, The Ohio State University, and the University of Illinois Urbana-Champaign, demonstrate that inflammation in the central nervous system is oftentimes quenched or restricted, as neurons are extremely vulnerable to inflammation-caused damages. However, this inflammation can be aberrantly amplified through endothelial cell-microglia crosstalk when the brain constantly receives inflammatory signals. Quan's work identified hyaluronic acid as the key signal released by endothelial cells to stimulate microglia and promote oxidative damage.
I came across this article.
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MDs, researchers, scientists have long claimed exercise works like a miracle drug. Now they have proof. Cover of Sept 12 issue of Time 
