- Novel role for the potent endogenous inotrope apelin in human cardiac dysfunction. Chen, M.M., Ashley, E.A., Deng, D.X., Tsalenko, A., Deng, A., Tabibiazar, R., Ben-Dor, A., Fenster, B., Yang, E., King, J.Y., Fowler, M., Robbins, R., Johnson, F.L., Bruhn, L., McDonagh, T., Dargie, H., Yakhini, Z., Tsao, P.S., Quertermous, T. Circulation (2003)