| ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
(Circulation. 2004;110:692-699.)
© 2004 American Heart Association, Inc.
Original Articles |
From the Department of Internal Medicine and Therapeutics, Osaka University Graduate School of Medicine, Osaka, Japan (Y.L., M.A., S.T., Y.A., Y.S., T.M., H.A., S.S., M.H.); and the Cardiovascular Division of Medicine, National Cardiovascular Center, Suita, Osaka, Japan (J.K., A.O., S.K., H.T., M.K.).
Correspondence to Masafumi Kitakaze, Cardiovascular Division of Internal Medicine, National Cardiovascular Center, 5-7-1 Fujishirodai, Suita, Osaka, 565-8565, Japan. E-mail kitakaze{at}zf6.so-net.ne.jp
Received September 4, 2003; de novo received March 21, 2004; revision received May 6, 2004; accepted May 11, 2004.
Background The blockade of ß-adrenergic receptors reduces both mortality and morbidity in patients with chronic heart failure, but the cellular mechanism remains unclear. Celiprolol, a selective ß1-blocker, was reported to stimulate the expression of endothelial NO synthase (eNOS) in the heart, and NO levels have been demonstrated to be related to myocardial hypertrophy and heart failure. Thus, we aimed to clarify whether celiprolol attenuates both myocardial hypertrophy and heart failure via the NO-signal pathway.
Methods and Results In rat neonatal cardiac myocytes, celiprolol inhibited protein synthesis stimulated by either isoproterenol or phenylephrine, which was partially suppressed by NG-nitro-L-arginine methyl ester (L-NAME). Four weeks after transverse aortic constriction (TAC) in C57BL/6 male mice, the ratio of heart weight to body weight (mg/g) (8.70±0.42 in TAC, 6.61±0.44 with celiprolol 100 mg · kg1 · d1 PO, P<0.01) and the ratio of lung weight to body weight (mg/g) (10.27±1.08 in TAC, 7.11±0.70 with celiprolol 100 mg · kg1 · d1 PO, P<0.05) were lower and LV fractional shortening was higher in the celiprolol-treated groups than in the TAC group. All of these improvements were blunted by L-NAME. Celiprolol treatment significantly increased myocardial eNOS and activated phosphorylation of eNOS. Myocardial mRNA levels of natriuretic peptide precursor type B and protein inhibitor of NO synthase, which were increased in the TAC mice, were decreased in the celiprolol-treated mice.
Conclusions These findings indicated that celiprolol attenuates cardiac myocyte hypertrophy both in vitro and in vivo and halts the process leading from hypertrophy to heart failure. These effects are mediated by a selective ß1-adrenergic receptor blockade and NO-dependent pathway.
Key Words: receptors, adrenergic, beta heart failure hypertrophy nitric oxide
Related Article:
Circulation 2004 110: 643.
This article has been cited by other articles:
![]() |
A. Maffei, A. Di Pardo, R. Carangi, P. Carullo, R. Poulet, M. T. Gentile, C. Vecchione, and G. Lembo Nebivolol Induces Nitric Oxide Release in the Heart Through Inducible Nitric Oxide Synthase Activation Hypertension, October 1, 2007; 50(4): 652 - 656. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Juric, P. Wojciechowski, D. K. Das, and T. Netticadan Prevention of concentric hypertrophy and diastolic impairment in aortic-banded rats treated with resveratrol Am J Physiol Heart Circ Physiol, May 1, 2007; 292(5): H2138 - H2143. [Abstract] [Full Text] [PDF] |
||||
![]() |
Y. Liao, S. Takashima, N. Maeda, N. Ouchi, K. Komamura, I. Shimomura, M. Hori, Y. Matsuzawa, T. Funahashi, and M. Kitakaze Exacerbation of heart failure in adiponectin-deficient mice due to impaired regulation of AMPK and glucose metabolism Cardiovasc Res, September 1, 2005; 67(4): 705 - 713. [Abstract] [Full Text] [PDF] |
||||
![]() |
Y. Liao, M. Asakura, S. Takashima, A. Ogai, Y. Asano, H. Asanuma, T. Minamino, H. Tomoike, M. Hori, and M. Kitakaze Benidipine, a long-acting calcium channel blocker, inhibits cardiac remodeling in pressure-overloaded mice Cardiovasc Res, March 1, 2005; 65(4): 879 - 888. [Abstract] [Full Text] [PDF] |
||||
![]() |
G. W. Booz Putting the Brakes on Cardiac Hypertrophy: Exploiting the NO-cGMP Counter-Regulatory System Hypertension, March 1, 2005; 45(3): 341 - 346. [Abstract] [Full Text] [PDF] |
||||
|
Circulation Home | Subscriptions | Archives | Feedback | Authors | Help | AHA Journals Home | Search Copyright © 2004 American Heart Association, Inc. All rights reserved. Unauthorized use prohibited. |