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Mount Sinai receives $13 million NIH grant to study link between stress-associated brain activity and cardiovascular risk

Press releases may be edited for formatting or style | April 07, 2017 Cardiology Heart Disease
Researchers at the Icahn School of Medicine at Mount Sinai have been awarded $13 million from the National Heart, Lung, and Blood Institute of the National Institutes of Health (NIH) for a five-year research program that aims to uncover the mechanisms by which stress contributes to cardiovascular risk. The program aims to improve our understanding of how the effect of stress on the brain can directly impact the immune system and cardiovascular disease, and to provide a scientific platform for clinicians and researchers to integrate this knowledge into patient care.

While abundant epidemiological data exists describing severe chronic stress as a risk factor for cardiovascular disease, the mechanism by which stress contributes to cardiovascular events is not fully understood. Preclinical preliminary data from the program's investigators describe a direct causal link between psychosocial stress, neural signals, and atherosclerosis, the chronic inflammatory disease that is the underlying cause of heart attacks and strokes. To better characterize risk of future cardiovascular events as affected by psychosocial stress, researchers will study the levels of macrophages—key immune cells contributing to the inflammation that characterizes atherosclerosis—within the arteries, blood, and organs of the immune system.

The program consists of three distinct studies. The first will use mouse models to explore how the brain reacts to stress and affects the immune system to increase cardiovascular disease risk. The second study will translate discoveries from the first to develop non-invasive imaging methodologies, such as combined MRI and PET scans, in order to study these same processes in larger mammals and humans. The third study will then use these imaging technologies to examine the link between increased emotional stress and increased cardiovascular risk in human subjects diagnosed with post-traumatic stress disorder.

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“A better understanding of non-traditional risk factors to cardiovascular disease, such as psychosocial stress, allows for a more comprehensive risk assessment in patients,” says Zahi A. Fayad, PhD, Mount Sinai Endowed Chair in Medical Imaging and Bioengineering, Professor of Radiology and Medicine (Cardiology), and Director of the Translational and Molecular Imaging Institute (TMII) at the Icahn School of Medicine at Mount Sinai, and the Principal Investigator of the study. “The development of non-invasive imaging technology to assess cardiovascular risk in relationship to brain and immune system activation opens new opportunities for early diagnosis and treatment of cardiovascular disease.”

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