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• W2021497986 abstract "p38 mitogen-activated protein (MAP) kinase is activated during ischemic/hypoxic myocardial injury. However, the role of activated p38 MAP kinase on cardiac function after myocardial injury is not well understood. In the present study, we investigated the cardioprotective effects of p38 MAP kinase inhibition in a rat model of acute myocardial injury, induced by subcutaneous injection of isoproterenol (ISO, 20 mg/kg/d for 3 days). A synthetic p38α MAP kinase inhibitor, SD-282 (40 mg/kg) or vehicle (0.25% Tween 80 in saline) was given intraperitoneally twice a day for 3 days, concomitant with ISO treatment. Cardiac function, systolic blood pressure, gene expression including collagen I and III, fibronectin and COX-2, and the myocardial injury were analyzed. Results showed that administration of SD-282 remarkably improved ISO-induced reduction of cardiac function with increases in ejection fraction (P < 0.001), cardiac output (P < 0.05), stroke volume (P < 0.001), and cardiac index (P < 0.01). SD-282 abolished ISO-induced reduction of systolic blood pressure (106.7 ± 2.2 versus 123.1 ± 5.3 mm Hg, P < 0.05). The ISO-induced expression of COX-2, collagen I and III, and fibronectin genes was reduced significantly (P < 0.05 in all cases) by administration of SD-282. The myocardial injury induced by ISO was significantly reduced by the treatment of SD-282 as judged by the reduction of myocardial necrosis. Data suggest that p38α MAP kinase may be involved in the pathogenesis of cardiac dysfunction in ischemic myocardial injury. Inhibition of this enzyme may improve cardiac function and protect myocardium from ischemic/hypoxic injury that occurs during ischemic heart disease." @default.
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• W2021497986 date "2004-10-01" @default.
• W2021497986 modified "2023-09-27" @default.
• W2021497986 title "p38α Mitogen-Activated Protein Kinase Inhibition Improves Cardiac Function and Reduces Myocardial Damage in Isoproterenol-Induced Acute Myocardial Injury in Rats" @default.
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• W2021497986 doi "https://doi.org/10.1097/01.fjc.0000141474.06383.6f" @default.
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