Title | Effect of nisoldipine on endothelin-1 and angiotensin II-induced immediate/early gene expression and protein synthesis in adult rat ventricular cardiomyocytes | |
Authors | Ioannis Nouskas, Ludwig Neyses and Hans Vetter
Medical Policlinic, Molecular Cardiology Laboratory, University of Bonn, Federal Republic of Germany (Head: Prof. Dr. med. Hans Vetter) |
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Citation | Nouskas, I., Neyses, L., Vetter, H.: Continuous spinal anesthesia with combination of local anesthetics: Effect of nisoldipine on endothelin-1 and angiotensin II-induced immediate/early gene expression and protein synthesis in adult rat ventricular cardiomyocytes, Epitheorese Klin. Farmakol. Farmakokinet. 7(2): 79-87 (1993) | |
Publication Date | Received for publication: 20 May 1993
Accepted for publication: 20 June 1993 |
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Full Text Language | English | |
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Keywords | Cardiac hypertrophy, Ca antagonists, transcription factors, growth induction. | |
Other Terms | review article | |
Summary | A question of considerable clinical significance is the therapeutic approach to reducing hypertensive left ventricular hypertrophy, as well as the nature of the molecular signals that initiate and maintain cardiac hypertrophy and its regression. We therefore investigated the direct effect of the novel Ca²+ blocker nisoldipine (N) in inhibiting growth-related myocardial gene expression and stimulation of protein synthesis by putative cardiac growth promoting agents [angiotensin II (AII)/endothelin-1 (E)]. In isolated adult rat ventricular cardiomyocytes, employing northern blotting and hybridization techniques, we observed a significant induction of the transcription factors Egr-1 (Early growth response gene-1) and c-fos by AII and E and an attenuation of this effect by N. AII and E also stimulated total myocardial protein synthesis rates by 108% and 135% respectively; these effects could also be completely inhibited by N. There was a dose-response relationship for the inhibition of the stimulatory effect of E on protein synthesis by N. These data indicate that N could reduce cardiac hypertrophy not depending on any form of haemodynamic overloading. The inhibition of the expression of the oncogenes Egr-1 and c-fos by N may be involved in the attenuation of E- and AII-induced protein synthetic activity in the heart muscle, pointing towards a molecular link between myocardial gene expression and protein synthesis, the latter eventually leading to cardiac hypertrophy. | |
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Relative Papers |
Online ISSN 1011-6575
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Articles published in this Journal are Indexed or Abstracted in: • Chemical Abstracts • Elsevier’s Bibliographic Databases: Scopus, EMBASE, EMBiology, Elsevier BIOBASE SCImago Journal and Country Rank Factor
Συντακτικη Επιτροπή-Editorial Board
ΕΤΗΣΙΑ ΣΥΝΔΡΟΜΗ 1993 – ANNUAL SUBSCRIPTION 1993 | |
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