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Researchers create safer alternative to heparin
Date:8/17/2008

Troy, N.Y. Robert Linhardt has spent years stitching together minuscule carbohydrates to build a more pure and safer alternative to the commonly used and controversial blood thinner heparin. At the national conference of the American Chemical Society on August 17, 2008, Linhardt announced that his research team may have accomplished this task by building the first fully synthetic heparin. Their creation is the largest dose of heparin ever created in the lab.

Heparin is used around the globe and is among the most widely used drugs in American hospitals. The main source of this heparin is the intestines of foreign livestock and the risk of contamination from such sources is high, according to Linhardt. And as Linhardt and others around the globe worked toward an alternative, drug manufacturers worked to avoid contamination, but the risks proved too high, Linhardt said. In the spring of 2008, the search for a safer alternative to the common drug had reached a frantic pace after more than 80 people around the world died and hundreds became ill after they were administered what was believed to be contaminated batches of heparin.

Linhardt, who is the Ann and John H. Broadbent Jr. '59 Senior Constellation Professor of Biocatalysis and Metabolic Engineering at Rensselaer Polytechnic Institute, was on the international team that identified the suspected contaminant in the Chinese heparin, a structurally similar carbohydrate called oversulfated chondroitin sulfate.

"When we found the contamination, it was another sign that the way we currently manufacture heparin is simply unsafe," he said. "Unlike the current heparin that is harvested from possibly disease carrying animals in often very poor conditions, our fully synthetic heparin will be created in a pharmaceutical manufacturing environment from fermentation to packaging. This will give drug manufacturers extreme control over the safety and purity of the product."

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Contact: Jason Gorss
gorssj@rpi.edu
518-276-6098
Rensselaer Polytechnic Institute
Source:Eurekalert

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