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    Digitale Medien
    Digitale Medien
    Melbourne, Australia : Blackwell Science Pty
    Clinical and experimental pharmacology and physiology 28 (2001), S. 0 
    ISSN: 1440-1681
    Quelle: Blackwell Publishing Journal Backfiles 1879-2005
    Thema: Medizin
    Notizen: 1. The aim of the present study was to investigate left and right ventricular (LV and RV, respectively) coronary vasodilatation reserve (CVR; fluorescent microsphere technique) in rats with hypertension (spontaneously hypertensive rats (SHR)) or congestive heart failure (CHF) and the effects of early and chronic renin–angiotensin system (RAS) blockade thereupon.2. In adult SHR, both LV and RV CVR were impaired, especially in the non-hypertrophied RV, the main factor involved being coronary vascular remodelling. Blockade of the RAS normalized both LV and RV CVR, mainly through the prevention of hypertension and suppression of the resulting pericoronary fibrosis.3. In postischaemic CHF rats, there was an early and severe degradation of LV and RV CVR that developed before any significant vascular remodelling and appeared to be linked to the deterioration of cardiac hypertrophy and haemodynamics. This degradation in CVR further worsened over the longer term due to late-developing pericoronary fibrosis and endothelial dysfunction. Blockade of the RAS had no early effects on LV and RV CVR, but improved RV CVR over the long term, mainly by limiting RV hypertrophy and by preventing the development of pericoronary fibrosis and coronary endothelial dysfunction.4. In kallikrein–kinin system-deficient mice, CVR was not different from that of wild-type mice, suggesting that this system is not implicated in normal CVR regulation.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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