Résumé
There is some evidence that cardiac rather than circulating insulin- like growth factor-1 (IGF-1) levels contribute to the development of renovascular hypertensive left ventricular hypertrophy (LVH), remaining unknown the effects of antihypertensive drugs on IGF-1 levels. We have assessed here the preventive effects of enalapril, losartan, propanolol and α-methyldopa on left ventricle (LV) and circulating IGF-1 levels in a rat model of hypertension and LVH (Goldblatt, GB). Our results show that relative LV mass and the LV content of IGF-1 were significantly lower with all antihypertensive drags in GB rats (p<0.001). Serum concentrations of IGF-1 were lower in GB rats treated with enalapril, α-methyldopa and propanolol (p<0.01), but not in those treated with losartan. These results support the hypothesis that local rather than seric IGF-1 contributes to the development of left ventricular hypertrophy induced by pressure overload in the rat.
Langue d'origine | English |
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Pages (de-à) | 1603-1612 |
Nombre de pages | 10 |
Journal | Life Sciences |
Volume | 64 |
Numéro de publication | 18 |
DOI | |
Statut de publication | Published - mars 26 1999 |
Financement
We thank to Professor C.I. Pogson for his critical review of the manuscript. This work was supportedin part by Fondo NacionaI de Ciencia y Tecnologia (FONDECYT) Grants 1930592a nd 1950452.
Bailleurs de fonds | Numéro du bailleur de fonds |
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Fondo Nacional de Ciencia y Tecnología | 1950452 |
ASJC Scopus Subject Areas
- General Pharmacology, Toxicology and Pharmaceutics
- General Biochemistry,Genetics and Molecular Biology