01 July 1998
Superoxide dismutase isoenzymes activity changes in the plasma of heart failure patients
Wojciech Jacheć, Lech Poloński, Barbara Kuśnierz, Roman Tarnowski, Jan Wodnicki, Michał Tendera, Andrzej TomasikMed Sci Monit 1998; 4(4): CR646-650 :: ID: 502284
Abstract
46 patients (19 women and 27 men, aged 42±14 years) with congestive cardiomyopathy (left ventricular ejection
fraction < 30%) and 10 healthy subjects (aged 36±12 years) were evaluated echocardiographically.Plasma activities of MnSOD and CuZnSOD were measured. A statistically significant negative correlation was found between MnSOD activity and the CI (r=0.64). The mean MnSOD activity in patients with the CI<2.41/min/m2 was 16.58±5.82 NU/I, and in patients with the CI>2.41/min/m2 it was 9.92±3.28NU/I (p<0.001). The mean CuZnSOP activity in patients with the CI<2.41/min/m2 was 4.5NU/I and in patients with CI>2.41/min/m2 it was 6.9±2.32 (p<0.01). The activity of MnSOD and CuZnSOD in healthy subjects was comparable to that found in patients with the CI>2.41/min/m2. Patients with the CI<2.41/min/m2 were reexamined following 6 weeks of pharmacological treatment (Drugs used: digoxin, captopril, furosemide, isosorbide dinitrate). A significant increase of the CI (p<0.01) accompanied by a decrease of MnSOD activity (p<0.05), and an insignificant increase of CuZnSOD activity were found. Our results indirectly confirm the increase of oxygen free radical concentration levels in patients with heart failure.
Keywords: cardiomyopathy, Free Radicals, Isoenzymes
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