University of Wisconsin
School of Medicine and Public Health

Ramratnam Research

Mohun Ramratnam, MD | Cardiac Metabolism and Pathways

Mohun Ramratnam, MD

Mohun Ramratnam, MD, is an interventional cardiologist and physician-scientist whose research focuses on understanding cardiac metabolism and its impact on human health. He runs a translational research program that seeks to uncover and target novel metabolic pathways for the treatment of cardiovascular disease.

Dr. Mohun Ramratnam's Faculty Biography

New Treatments for Ischemic Heart Disease 

Ischemic heart disease is prevalent, costly, and deadly. Despite major advances in medicine, it remains a large burden to society. Dr. Ramratnam's laboratory studies important pathways in mitochondrial and metabolic physiology to discover novel therapies for ischemic heart disease. 

Research Team

Holly Dodge, BS

Holly Dooge, BS

Research Specialist

Allison Wexler

Allison Wexler

Research Technician

photo of Dr. Mohan Ramratnan talking with research team

Active Projects

Targeting the Mitochondrial Sulfonylurea Receptor for Cardio-Protection

The cardiac sulfonylurea receptor is a regulator of cardiac metabolism. Recently, a unique splice variant was identified in mitochondria. Dr. Ramratnam’s laboratory studies the mitochondrial sulfonylurea receptor isoform and its role in cardio-protection.

The Physiologic Significance of the ROMK Channel in Heart

The renal outer medullary potassium channel (ROMK) is an ATP sensitive inward rectifying potassium channel. While originally found in kidney tissue, the channel also resides in the mitochondria of heart. However, the physiologic significance of heart ROMK is unknown. Activation of an ATP sensitive mitochondrial potassium channel in heart promote cardio-protection. Thus, my laboratory seeks to understand if ROMK is a mediator of cardio-protection.

Isolating and Studying Endothelial Cell From Humans

Endothelial cell dysfunction is a main contributor to vascular disease. While cellular and animal models continue to elucidate their role, human models would greatly benefit this research arena. My laboratory seeks to isolate endothelial cells during percutaneous vascular procedures in order to promote translational research.


View Dr. Mohun Ramratnam’s publications on NCBI My Bibliography

photo of Dr. Mohan Ramratnan in white coat working at bench

Positions Available

We are currently seeking undergraduates or graduate students interested in laboratory research. If you are interested in joining the group, please send your CV and a brief description of your research experience and interests to Dr. Ramratnam at

Funding Support

Dr. Ramratnam is funded by a VA Biomedical Science Career Development Award and through support from the University of Wisconsin Division of Cardiovascular Medicine.

Make a Gift

Help support our research by making a gift to support VA research through CARES or non-VA research through the University of Wisconsin Cardiovascular Research Center Fund.