Exploring the Impact of Anesthesia on the Elderly

A pioneering study now under way at the Mount Sinai Health System’s Translational and Molecular Imaging Institute is exploring why older patients often wake up from surgery disoriented and some experience cognitive deficits several months later. The study is being led by Jeffrey Silverstein, MD, Professor and Vice Chair for Research in the Department of Anesthesiology at Icahn School of Medicine at Mount Sinai, with $3.1 million in funding from The National Institute on Aging.

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Study Reveals Common Genetic Changes Are Significant in Autism

Genetic changes are responsible for roughly 60 percent of the risk for autism, and most of these variants are commonly found in the general population, according to a groundbreaking study led by Joseph D. Buxbaum, PhD, Director of the Seaver Autism Center for Research and Treatment, and Professor of Psychiatry, Neuroscience, and Genetics and Genomic Sciences at the Icahn School of Medicine at Mount Sinai.

The remaining nongenetic factors that account for roughly 40 percent of the risk for autism are not known. However, environmental factors and the interaction between genes and the environment may be a part of these nongenetic factors, says Dr. Buxbaum, the G. Harold and Leila Y. Mathers Research Professor of Geriatrics and Adult Development at Icahn School of Medicine.

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Teaching Heart-Healthy Habits to High-Risk Children and Families

Icahn School of Medicine at Mount Sinai has received a $3.8 million grant from the American Heart Association (AHA) to promote cardiovascular health through early education and intervention programs targeting high-risk children and their parents in Harlem and the Bronx.

Mount Sinai researchers will study the genes and lifestyles of 600 preschoolers and their parents or guardians who live in these communities, which are associated with high rates of obesity, cardiovascular disease, stroke, and type 2 diabetes. The investigators will track whether the interventions lead to healthier eating habits and additional exercise. They will also examine the participants’ DNA and RNA to understand how genetics plays a role in the development of cardiovascular disease.

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New Research Refutes Long-Held Antiviral Theory

A long-standing belief that mammals use the same potent antiviral molecules deployed by plants and invertebrates is being challenged by researchers at Icahn School of Medicine at Mount Sinai.

Their findings, published in the July 10, 2014, issue of Cell Reports, surprised many scientists who assumed that antiviral RNA Interference (RNAi) exists in humans as a natural result of evolution.

Scientists know that human cells, like cells in every living organism with a nucleus, encode and generate small RNAs, which influence our genetics. It is also known that mammals combat viruses with interferons—proteins manufactured by immune cells in response to pathogens.

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Understanding the Roots of Autism

Specific cellular pathways, along which genetic mutations occur, appear to play a key role in the development of autism spectrum disorders (ASD), according to new research from Icahn School of Medicine at Mount Sinai.

The findings, published online in the April 24, 2014, issue of The American Journal of Human Genetics, provide scientists with a better understanding of the complex genetic architecture involved in ASD, which has its roots in early brain development.

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Mount Sinai Presents Groundbreaking Findings on Heart Procedure

In a groundbreaking, multi-centered randomized trial published in The New England Journal of Medicine, researchers, co-led by Mount Sinai’s David H. Adams, MD, determined that a catheter-based heart procedure to replace an aortic valve was superior to surgery for patients who have symptomatic severe aortic stenosis with increased risks. The findings, based on a clinical trial involving 795 patients treated at 45 institutions across the nation, were simultaneously presented by Dr. Adams at the 63rd Annual Scientific Session of the American College of Cardiology on Saturday, March 29, and represent a major advance for heart patients who are at high risk for surgery.

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