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Omega 6 linked to skin health

Chiropractic Economics April 13, 2010

URBANA – University of Illinois scientists have learned that a specific omega-6 fatty acid may be critical to maintaining skin health.
“In experiments with mice, we knocked out a gene responsible for an enzyme that helps the body to make arachidonic acid. Without arachidonic acid, the mice developed severe ulcerative dermatitis. The animals were very itchy, they scratched themselves continuously, and they developed a lot of bleeding sores,” said Manabu Nakamura, a U of I associate professor of food science and human nutrition.
When arachidonic acid was added to the animals’ diet, the itching went away, he said.
Nakamura’s team has been focusing on understanding the function of omega-3 and -6 fatty acids, and doctoral student Chad Stroud developed a mouse model to help them understand the physiological roles of these fats. By knocking out genes, they can create deficiencies of certain fats and learn about their functions.
Nakamura explained that our bodies make arachidonic acid from linoleic acid, an essential fatty acid that we must obtain through our diets. It is found mainly in vegetable oils.
Scientists have long attributed healthy skin function to linoleic acid, which is important because it provides the lipids that coat the outer layer of the skin, keeping the body from losing water and energy, which would retard growth, the scientist said.
But skin function seems to be more complicated than that. These itchy mice had plenty of linoleic acid. They just couldn’t convert it to arachidonic acid because the gene to make the necessary enzyme had been knocked out, he noted.
Nakamura cautioned that there are still things they don’t understand about the function of this omega-6 fatty acid. “This new knowledge is a starting point in understanding the mechanisms that are involved, and we need to do more research at the cellular level.”
 
Source: University of Illinois 

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Filed Under: News, Nutrition Supplements News

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