- Cardiac-specific elevations in thyroid hormone enhance contractility and prevent pressure overload-induced cardiac dysfunction. Trivieri, M.G., Oudit, G.Y., Sah, R., Kerfant, B.G., Sun, H., O Gramolini, A., Pan, Y., Wickenden, A.D., Croteau, W., Morreale de Escobar, G., Pekhletski, R., St Germain, D., Maclennan, D.H., Backx, P.H. Proc. Natl. Acad. Sci. U.S.A. (2006)