Molecule known as Akt3 Regulates Lipid Accumulation in Cells, Prevents Plaque Buildup in Arteries
July 11, 2012
Cleveland Clinic researchers have discovered that a naturally occurring molecule may play a role in preventing plaque buildup inside arteries, possibly leading to new plaque-fighting drugs and improved screening of patients at risk of developing atherosclerosis.
Sometimes called hardening or clogging of the arteries, atherosclerosis is the buildup of cholesterol, fatty cells, and inflammatory deposits on the inner walls of the arteries, restricting blood flow to the heart. The disease can affect the arteries in the heart, legs, brain, kidneys, and other organs, and is the most common cause heart attacks, strokes, and peripheral vascular disease.
At the cellular level, plaque buildup is the result of macrophages in the vessel wall absorbing, processing, and storing cholesterol (lipids) and then accumulating in large amounts, eventually leading to the development of arterial lesions. The researchers, led by Eugene Podrez, MD, PhD, of the Department of Molecular Cardiology at Cleveland Clinic’s Lerner Research Institute, have discovered that the naturally occurring molecule Akt3 regulates lipid entry into macrophages and prevents the cells from storing excessive amounts of cholesterol and collecting in the artery.
Podrez says the discovery could lead to new drugs designed to prevent atherosclerosis. It could also help doctors develop screening tests to determine patient risk level for developing the disease. Podrez and his colleagues are now looking into the particular mechanisms behind Akt3’s role in regulating lipid processing and will attempt to replicate their results in humans.
Their study, “Akt3 Deficiency in Macrophages Promotes Foam Cell Formation and Atherosclerosis in Mice,” was published in the June 6 issue of Cell Metabolism.
About Cleveland Clinic
Cleveland Clinic is a nonprofit multispecialty academic medical center that integrates clinical and hospital care with research and education. It was founded in 1921 by four renowned physicians with a vision of providing outstanding patient care based upon the principles of cooperation, compassion and innovation. Cleveland Clinic has pioneered many medical breakthroughs, including coronary artery bypass surgery and the first face transplant in the United States. US News & World Report consistently names Cleveland Clinic as one of the nation’s best hospitals in its annual “America’s Best Hospitals” survey. About 2,800 full-time salaried physicians and researchers and 11,000 nurses represent 120 medical specialties and subspecialties. Cleveland Clinic Health System includes a main campus near downtown Cleveland, eight community hospitals and 16 Family Health Centers in Northeast Ohio, Cleveland Clinic Florida, the Lou Ruvo Center for Brain Health in Las Vegas, Cleveland Clinic Canada, and opening in 2013, Cleveland Clinic Abu Dhabi. In 2010, there were 4 million visits throughout the Cleveland Clinic health system and 155,000 hospital admissions. Patients came for treatment from every state and from more than 100 countries. Visit us at www.clevelandclinic.org. Follow us at www.twitter.com/ClevelandClinic.
Wyatt DuBois, 216.445.9946, firstname.lastname@example.org