New study finds genetic link between women and heart disease

February 1, 2007 - Oakland, CA -- Scientists at Childrens Hospital Oakland Research Institute (CHORI), the University of Iowa and Roche Molecular Systems are the first to identify a new gene variant that makes women more susceptible to developing heart disease. The affected gene is called Leukotriene C4 Synthase (LTC4S) and its variant could be identified through a genetic test at birth. The use of such a test would allow physicians to initiate preventative treatments to reduce or even eliminate the risk of heart disease in those women possessing the variant gene.

The study will be published in the February issue of the American Heart Association journal Arteriosclerosis, Thrombosis, and Vascular Biology and was conducted by CHORI Scientists David Iovannisci, Ph.D. and Edward Lammer, M.D. (*1). The study began in 1971 with 11,377 children in Muscatine, Iowa. During the study, researchers periodically evaluated the participants risks of developing heart disease starting in their teens and into their 40s. Their weight, height, blood pressure, cholesterol and other health factors and risks were recorded between 1971 and 1996. The women and men in the study were selected because they live in the City of Muscatine, Iowa where residents rarely move, which is an ideal component to conduct a multi-year study.

The identification and monitoring of study participants was lead by Ronald Lauer, M.D., from the University of Iowa. Scientists at CHORI were responsible for genotyping DNA samples and drawing the studys conclusions. They hypothesized that inflammation was an important predictor for the development of heart disease. Inflammation is necessary to repair and heal nicks to the lining of blood vessels, which occur daily. The variant form of the LTC4S gene however, leads to an excessive inflammatory response at the site of blood vessel injury. As a result, people who inherit this gene variant dont repair damage to their blood vessels as wel

Contact: Diana Yee
Children's Hospital & Research Center at Oakland

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