New math model of heart cell has novel calcium pathway

David Kilper/WUSTL PhotoProfessor Yoram Rudy (center), with Ph.D. student Yong Wang (left) and post-doctroal fellow Leonid Livshitz (right), with their ECGI system on a mannequin, comment on the cardiac data.Scientists at Washington University in St. Louis have developed the first mathematical model of a canine cardiac cell that incorporates a vital calcium regulatory pathway with implications for life-threatening cardiac arrhythmias, or irregular heartbeats. Thomas J. Hund, Ph.D., post-doctoral researcher in Pathology ( in Dr. Jeffrey Saffitz laboratory) at the Washington University School of Medicine, and Yoram Rudy, The Fred Saigh Distinguished Professor of Engineering at Washington University, have incorporated the Calcium/Calmodulin-dependent Protein Kinase II (CaMKII) regulatory pathway into their model, improving the understanding of the relationship between calcium handling in cardiac cells and the cell’s electrical activity.