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Superoxide dismutase activity as a predictor of myocardial reperfusion and salvage in acute myocardial infarction.

Abstract：

:We attempted to predict successful myocardial reperfusion and salvage in acute myocardial infarction (AMI) by using measurements of plasma superoxide dismutase (SOD), a plasma free-radical scavenger, activity. Forty-nine patients with AMI were studied within 6 hours of symptoms onset. In group 1 (n = 26), primary percutaneous transluminal coronary angioplasty (PTCA) was undertaken, and plasma SOD activity was measured for 8 hours by the nitrite method. Left ventricular (LV) angiography was assessed before and 3 months after PTCA by computer LV contraction analysis. In group 2 (n = 23), TPA was infused intravenously over a 60-minute period, and plasma SOD activity was measured before and immediately after TPA infusion. In group 1, occluded coronary arteries were successfully dilated in 24 of 26 patients, and plasma SOD activity increased from 3.20 +/- 0.17 microns/ml to 4.66 +/- 0.29 microns/ml at 1 hour after PTCA (p < 0.001), returning to the basal level by 8 hours after PTCA. Plasma SOD activity did not significantly change patients with unsuccessful PTCA or those with the no-reflow phenomenon. The maximal increase in plasma SOD activity was significantly correlated with the grade of improvement in LV contraction (r = 0.852, p < 0.001). In group 2, the sensitivity and specificity of predicting coronary recanalization was 86% and 89%, respectively. In conclusion, myocardial reperfusion and salvage in AMI can be predicted by changes in plasma SOD activity.

journal_name

Am Heart J

journal_title

American heart journal

authors

Tomoda H,Morimoto K,Aoki N

doi

10.1016/s0002-8703(96)90163-5

subject

Has Abstract

pub_date

1996-05-01 00:00:00

pages

849-56

issue

5

eissn

0002-8703

issn

1097-6744

pii

S0002-8703(96)90163-5

journal_volume

131

pub_type

杂志文章

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