Elevated cardiac tissue level of aldosterone and mineralocorticoid receptor in diastolic heart failure: beneficial effects of mineralocorticoid receptor blocker - Ohtani, T; Ohta, M; Yamamoto, K; Mano, T; Sakata, Y; Nishio, M; Takeda, Y; Yoshida, J; Miwa, T; Okamoto, M; Masuyama, T; Nonaka, Y; Hori, M (Am J Physiol Regul Integr Comp Physiol, 2007)