Proteomics Defines Shared and Divergent Alterations in the Right Atrium and Right Ventricle in Porcine Right Heart Failure
Prins, S.; Sternbach, J.; Mendelson, J. B.; Markowski, T.; Higgins, L.; Carney, J.; Tollison, W.; Choudhary, G.; Prins, K.
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Right heart failure is due to both right atrial and right ventricular dysfunction. While the two chambers are distinct, the proteomic response to pressure overload is undefined. Here, we used quantitative proteomics to evaluate changes in both chambers in pulmonary artery banded pigs. We found common alterations in oxidative phosphorylation, ribosome regulation, integrin-mediated adhesion, and glycolysis enzymes. However, the right atrium had more pronounced deficits in the TCA cycle and branched chain amino acid metabolism. Thus, these data highlight metabolic pathways that could be evaluated to selectively enhance right atrial function.
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