March 17, 2008 - Merck & Co., Inc. announced the publication of two studies providing evidence that genetic susceptibility to obesity involves changes in entire networks of genes and is not limited to mutations in several specific genes. The work also showcases how genomic techniques may be used to understand the complex changes at the root of common diseases where multiple complex genetic changes are thought to be involved. The studies were published online in the peer-reviewed journal Nature.Scientists at Merck Research Laboratories (MRL) and their collaborators performed genetic and gene expression analysis of tissues from a model of metabolic syndrome (a group of conditions that increases the risk of cardiovascular disease and diabetes) and a human population known to be susceptible to obesity. The resulting data were analyzed using powerful computational methods that integrate data from several sources to identify networks of gene interactions altered in individuals susceptible to obesity... Merck's Press Release -