Plasma lipid spectrum and survival in rats with heart failure varied by severity under the influence of neurohormonal modulators

Abstract

In rats with relatively mild chronic heart failure (CHF) there was an increase in plasma LDL levels. In turn, in severe CHF it was revealed a significant decrease in total cholesterol concentration due to LDL levels decline. ACE inhibitors (captopril, enalapril and lisinopril) and the most selective β₁-adrenoblockers (metoprolol, nebivolol) had not any significant influence on plasma lipids. Less selective and especially nonselective β-adrenoblockers pindolol and propranolol brought up the atherogenic potential of plasma because of HDL levels reduction in mild CHF whereas in case of severe model — due to the trends toward decrease in HDL concentration and toward increase in LDL levels. Lipophilic ACE-inhibitors and β-adrenoblockers without intrinsic sympathomimetic activity improved survival in rats with mild CHF to the equal extent. On the contrary in severe CHF β-adrenoblockers, especially non-selective, had an advantage over ACE inhibitors on the survival effect.