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  • Title: Attenuated diuretic and natriuretic effects of atrial natriuretic peptide in rats with heart failure.
    Author: Tikkanen T, Tikkanen I, Sariola H, Svartström-Fraser M, Fyhrquist F.
    Journal: Horm Metab Res; 1989 Apr; 21(4):185-8. PubMed ID: 2526789.
    Abstract:
    Plasma levels of atrial natriuretic peptide (ANP) and renal responses to ANP were examined in rats with chronic cardiac failure produced by coronary artery ligation and in sham-operated controls. Plasma ANP levels were elevated in the rats with severe cardiac failure as compared with the controls (P less than 0.001). ANP injections at the doses of 1, 5, 25 and 50 micrograms/kg increased water and sodium excretion significantly at all but the lowest dose in the controls; only the two largest doses caused clear diuresis and natriuresis in the heart failure group. The diuretic and natriuretic effects of ANP were significantly weaker at the doses of 5 and 25 micrograms/kg in the rats with heart failure as compared with the controls. We conclude, that natriuretic and diuretic effects of ANP are attenuated in this chronic heart failure mode.
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