Sunday, May 12, 2013

Pieces of Gold help cure AIDS

Chemists found by the University of North Carolina, that the addition of small pieces of gold weakened AIDS drugs takes its ability to fight the virus enters the body, the immune system, while scientists in New York created a substance far stronger and harder than conventional iron, the remains their properties even at high temperatures. This opens the door to a variety of applications, such as engine components, the high loads and high temperatures. Created by adding gold nanoparticles in a modified version of the drug in 1990 to fight AIDS - but rejected because of the harmful side effects - creates a substance that does not allow the virus exist in the cells, said Dr. Christian Melander, assistant professor of chemistry in the State of New York York. Component drug, called TAK-779 was originally found to the property of a point of the human T cells that block the penetration of the AIDS virus to bind the immune system. Unfortunately, the proportion of drug molecules, which makes it possible is the accession had harmful side effects. If the portion of the molecule - an ammonium salt - was removed lost drug's ability to attach. It was then that the scientists turned into gold. This element has. No reaction in the human body and is ideal as a platform for the attachment of drug molecules in the absence of the ammonium salt, which will keep the drug molecules and to strengthen it Theory was a real confirmation. This allowed the scientists a harmless way to show the effectiveness of essential medicines recovery, and now such a theory will be applied to other existing drugs. Iron is of nanocrystals, much stronger and more durable than conventional equivalent composed, but the benefits of such a nano-iron is limited by the fact that its nanocrystalline structure breaks at relatively moderate temperatures. But scientists from the New York State developed an iron-zirconium alloy, its nanocrystalline structure retains at temperatures above 1300 degrees - near the melting point of iron. New variety commercially viable to produce unnecessarily alloy is worth so much, and create nano-iron.

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