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- W2080183469 abstract "Most acute respiratory distress syndrome studies have been focused on the lung injury. Little is known about other organs during the development of acute respiratory distress syndrome. Herein, we investigated the injury and cell death in multiple organs after intestinal ischemia-reperfusion (IIR) in C57BL/6 mice. Terminal transferase dUTP nick end labeling staining was used as a marker of cell death. Caspase 3 and cathepsin B activation as markers of caspase-dependent and caspase-independent apoptosis, respectively, and electron microscopy for ultimate characterization of cell death were used. In comparison with control and sham-operated mice, the IIR group showed interstitial inflammatory infiltrates in the lung and significant increases of lung injury parameters and plasma lactate dehydrogenase and aspartate aminotransferase levels. Terminal transferase dUTP nick end labeling-positive cells and immunostaining for hemeoxygenase 1, an enzyme induced by inflammatory stimuli, were increased in the lung, heart, and kidney, but not in the liver. The number of hemeoxygenase 1-positive cells positively and significantly correlated to the number of terminal transferase dUTP nick end labeling-positive cells. Cell death was not associated with caspase 3 or cathepsin B activation. Electron microscopy showed morphological features compatible with oncotic rather than apoptotic cell death or necrosis, including mitochondrial swelling and cytoplasm disorganization in pulmonary and renal epithelial cells, lung and cardiac endothelial cells, and myocytes. These results indicate that, although lung injury is the most significant manifestation after IIR, oncotic cell death occurs in the lung, heart, and kidney, which may be related to ischemia and inflammation. Abbreviations-ALI-acute lung injury; ALT-alanine aminotransferase; ARDS-acute respiratory distress syndrome; AST-aspartate aminotransferase; BAL-bronchoalveolar lavage; BP-arterial blood pressure; BSA-bovine serum albumin; EBD-Evans blue dye; EM-electron microscopy; HO-1-hemeoxygenase 1; IIR-intestinal I/R; LDH-lactate dehydrogenase; MODS-multiple organ dysfunction syndrome; TUNEL-terminal transferase dUTP nick end labeling" @default.
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- W2080183469 date "2007-08-01" @default.
- W2080183469 modified "2023-10-15" @default.
- W2080183469 title "INTESTINAL ISCHEMIA-REPERFUSION-INDUCED ACUTE LUNG INJURY AND ONCOTIC CELL DEATH IN MULTIPLE ORGANS" @default.
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- W2080183469 doi "https://doi.org/10.1097/01.shk.0000278497.47041.e3" @default.
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