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Four Enzymes cause hair to turn gray (Gray Hair)
posted by HairSite 
, 21.03.2009, 17:23
Just published in March 2009: Scientists have discovered that there are four enzymes working together to cause hair to turn gray.
Many of us know that gray hair is related to lack of melanin, but nobody knows why melanin disappears all of a sudden, that is until now.
New discovery about the cause of gray hair was reported by the scientists and researchers at the the Universities of Bradford, Mainz and Luebeck. Details about their findings will be published in the Federation of American Societies for Experimental Biology's journal.
It was discovered that the primary or leading cause of gray hair starts with a reduction or decreaes in the enzyme called catalase. Lack of catalase can result in an accumulation of hydrogen peroxide, hydrogen peroxide can in turn inhibits the production of the enzyme tyrosinase. Tyrosinase produces melanin, the hair's natural pigment.
There is also a reduction of repair enzymes A and B preventing hair follicles from repairing the damage caused by the build up of hydrogen peroxide.
Research is underway to find out more about the mechanisms that lead to gray hair and possible treatment, according to one of the researchers, Karin Schallreuter, a professor of clinical and experimental dermatology at England's University of Bradford.
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- Four Enzymes cause hair to turn gray - HairSite, 21.03.2009, 17:23