Main Line Health, Mayo researchers find natural product may prevent sudden cardiac death from rare inherited syndromes
Wynnewood, PA — In 2020, a team of cardiovascular experts from the Lankenau Institute for Medical Research (LIMR), part of Main Line Health, used experimental models to discover that a natural product found in plants including safflower holds promise for treating a pair of hereditary sudden cardiac death syndromes.
Now, collaborators from LIMR and Mayo Clinic have provided clinical evidence in a new study that acacetin may be the new agent for which cardiologists have been searching. Results were published earlier this month in the journal Circulation: Genomic and Precision Medicine.
“These findings give us optimism that our pioneering work at LIMR will translate into results that save patient lives,” said Charles Antzelevitch, PhD, executive director of LIMR’s Cardiovascular Research Program. “Further studies are clearly warranted to better understand the mechanisms by which acacetin can be beneficial in the treatment of cardiac arrhythmias.”
Antzelevitch and Mayo’s Michael J. Ackerman, MD, PhD, served as senior authors. Héctor Barajas-Martínez, PhD, a LIMR research professor, was a coauthor.
In the study, LIMR and Mayo investigators demonstrated that acacetin exerts its beneficial effects by altering ion channel activity within the cells of the heart.
Brugada syndrome and early repolarization syndrome fall under the umbrella of J-wave syndromes. They have overlapping cellular and genetic features characterized by irregular heart rhythms. Brugada syndrome affects about 5 of every 10,000 people worldwide. People with it can often die in their sleep. Early repolarization is a common finding in electrocardiograms, but recent studies show the usually benign condition can lead to sudden cardiac death secondary to development of cardiac arrhythmias.
J-wave syndromes have been the focus of increasing interest in the cardiology community over the last quarter-century. Antzelevitch and his colleagues have pioneered studies focused on the cellular and genetic basis for these life-threatening syndromes over that period.
The new study focused on a Brugada syndrome patient with a mutation in the KCND3 gene. Mayo performed testing with induced pluripotent stem cells, which are derived from skin or blood cells that have been reprogrammed to differentiate into cardiomyocytes, cells responsible for the contracting force in the heart.
Acacetin is a compound distributed in numerous types of plant pigments and is responsible for many of the colors in nature. The research teams believe it may be superior to quinidine, which is one of the current pharmaceutical options for treatment of the J-wave syndromes.
Acacetin is also considered an attractive therapeutic target to treat inflammatory and immunological disorders.
About Lankenau Institute for Medical Research
Lankenau Institute for Medical Research (LIMR) is a nonprofit biomedical research institute located on the campus of Lankenau Medical Center and is part of Main Line Health. Founded in 1927, LIMR's mission is to improve human health and well-being. Using its ACAPRENEURIALTM organizational model that integrates academic and entrepreneurial approaches, faculty and staff are devoted to advancing innovative new strategies to address formidable medical challenges including cancer, cardiovascular disease, tissue regeneration, gastrointestinal disorders and autoimmune diseases such as arthritis. LIMR's principal investigators conduct basic, preclinical and clinical research, using their findings to explore ways to improve disease detection, diagnosis, treatment and prevention. They are committed to extending the boundaries of human health through technology transfer and training of the next generation of scientists and physicians.
About Main Line Health
Founded in 1985, Main Line Health® is a not-for-profit health system serving the Philadelphia region and beyond. Main Line Health consists of five hospitals, six health centers and over 150 medical practice locations. The System has more than 14,000 employees and over 2,100 employed and independent physicians and advanced practice providers.
At its core are four of the region's most respected acute care hospitals — Lankenau Medical Center, Bryn Mawr Hospital, Paoli Hospital and Riddle Hospital — as well as one of the nation's premier facilities for rehabilitative medicine, Bryn Mawr Rehab Hospital. Main Line Health also includes Mirmont Treatment Center for drug and alcohol recovery; Main Line Health HomeCare & Hospice, providing skilled home healthcare, hospice and home infusion services; Main Line Health Centers, primary and specialty care, lab and radiology and other outpatient services located in Broomall, Collegeville, Concordville, Exton, King of Prussia and Newtown Square; and Lankenau Institute for Medical Research, a biomedical research organization.
Main Line Health's medical staff benefits from a collaborative relationship including independent physicians, community healthcare professionals and hospital-based experts from Main Line HealthCare, the employed multi-specialty physician network of Main Line Health.
Main Line Health collaborates with top experts to deliver exceptional specialty care. Through our affiliation with the Children's Hospital of Philadelphia, doctors and advanced practice providers care for pediatric patients at select Main Line Health locations, including the neonatal intensive care units at Main Line Health's four acute care hospitals, as well as Bryn Mawr Hospital's Inpatient Pediatric Unit and Emergency Department. Jefferson Health neurosurgeons and neurointerventionalists provide 24/7 specialized care, including neurointervention and lifesaving stroke care, and trauma surgeons provide critical care to our patients. Through our affiliation with Sheppard Pratt — a nonprofit provider of mental health services, substance use, developmental disability and other comprehensive behavioral health support — patients receive compassionate care in a welcoming environment.
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