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• W2073392634 abstract "We examined the effects of propofol (2,6-diisopropylphenol) on functional recovery and 15-F2t-isoprostane generation during ischemia-reperfusion in Langendorff-perfused rat hearts. Before the induction of 40 min of global ischemia, hearts were perfused (10 min) with propofol at 5 (lo-P) or 12 microg/mL (hi-P) in saline or with saline only (control). During ischemia, saline, lo-P, or hi-P was perfused through the aorta at 60 microL/min. During the first 15 min of reperfusion, propofol (5 or 12 microg/mL) was continued, followed by perfusion with 5 microg/mL propofol for 75 min in both propofol-treated groups. After 90 min of reperfusion (Rep-90), heart tissues were harvested for assessment of antioxidant status. In hi-P, we observed increased latency to and greater reduction of ischemic contracture relative to the lo-P or control groups. 15-F2t-Isoprostane concentrations increased during ischemia and were significantly lower in hi-P and lo-P than in control (P < 0.01). At Rep-90, myocardial functional recovery was greater in both propofol-treated groups relative to control, and it correlated positively with tissue antioxidant capacity preservation. Tissue antioxidant capacity was better preserved in hi-P than in lo-P treatment (P < 0.05). We conclude that oxidant injury occurs during ischemia and reperfusion, and propofol provides dose-dependent protection primarily by enhancing tissue antioxidant capacity and reducing lipid peroxidation." @default.
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• W2073392634 date "2003-01-01" @default.
• W2073392634 modified "2023-10-04" @default.
• W2073392634 title "Dose-dependent protection of cardiac function by propofol during ischemia and early reperfusion in rats: effects on 15-F_2t-isoprostane formation" @default.
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• W2073392634 doi "https://doi.org/10.1139/y02-170" @default.
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