Philadelphia, Pa. - (November 16) - Some chemical alternatives to plastic bisphenol-a (BPA), which is still commonly used in medical settings such as operating rooms and intensive care units, may be less disruptive to heart electrical function than BPA, according to a pre-clinical study that explored how the structural analogues bisphenol-s (BPS) and bisphenol-f (BPF) interact with the chemical and electrical functions of heart cells.
The findings suggest that in terms of toxicity for heart function, these chemicals that are similar in structure to BPA may actually be safer for medically fragile heart cells, such as those in children with congenital heart disease. Previous research has found a high likelihood that BPA exposure may impact the heart's electrical conductivity and disrupt heart rhythm, and patients are often exposed to the plastic via clinical equipment found in intensive care and in the operating room.
"There are still many questions that need to be answered about the safety and efficacy of using chemicals that look and act like BPA in medical settings, especially in terms of their potential contribution to endocrine disruption," says Nikki Gillum Posnack, Ph.D., the poster's senior author and a principal investigator in the Sheikh Zayed Institute for Pediatric Surgical Innovation at Children's National Hospital. "What we can say is that, in this initial pre-clinical investigation, it appears that these structural analogues have less of an impact on the electrical activity within the heart and therefore, may be less likely to contribute to dysrhythmias."
Future studies will seek to quantify the risk that these alternative chemicals pose in vulnerable populations, including pediatric cardiology and cardiac surgery patients. Since pediatric patients' hearts are still growing and developing, the interactions may be different than what was seen in this pilot study.
Learn more the impacts of exposure to plastics such as bisphenol-A and plasticizers such as DEHP and MEHP that are commonly used in medical devices:
- Plasticizer interaction with the heart
- What are the health effects of plastics?
- Do plastic chemicals contribute to the sudden death of patients on dialysis?
- Examining BPA's impact on developing heart cells
- Experimental model study links phthalates and cardiovascular health
Bisphenol-a Analogues May Be Safer Alternatives For Plastic Medical Products
Rafael Jaimes, Damon McCullough, Luther M Swift, Marissa Reilly, Morgan Burke, Jiansong Sheng, Javier Saiz, Nikki G Posnack
Poster Presentation by senior author Nikki G Posnack
CH.APS.01 - Translational Research in Congenital Heart Disease
AHA Scientific Sessions
November 16, 2019
1:30 p.m. - 2:00 p.m.
About Children's National Hospital
Children's National, based in Washington, D.C., has served the nation's children since 1870. Children's National is the nation's No. 6 pediatric hospital and, for the third straight year, is ranked No. 1 in newborn care, as well as ranked in all specialties evaluated by U.S. News & World Report. It has been designated two times as a Magnet® hospital, a designation given to hospitals that demonstrate the highest standards of nursing and patient care delivery. This pediatric academic health system offers expert care through a convenient, community-based primary care network and specialty outpatient centers in the D.C. Metropolitan area, including the Maryland suburbs and Northern Virginia. Home to the Children's Research Institute and the Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National is the seventh-highest NIH-funded children's hospital in the nation. Children's National is recognized for its expertise and innovation in pediatric care and as a strong voice for children through advocacy at the local, regional and national levels.