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- W2005183822 abstract "Objective: To investigate the role of oxygen free radicals in the induction of apoptosis in non-heart-beating donor (NHBD) livers, and if superoxide dismutase (SOD) ameliorates these alterations. Methods: Rat livers were perfused via the portal vein with histidine/tryptophan/α-ketoglutarate solution from heart-beating donors (HBD) or 60-min warm ischemia from NHBD, with or without the addition of SOD. After 24 h, cold storage livers were evaluated by isolated reperfusion. Results: NHBD showed significantly higher enzyme leakage and elevated portal venous pressure (PVP) versus HBD. Bile and total adenine nucleotides (TAN) were significantly decreased. Apoptosis was prominent in sinusoidal lining cells, coupled with strong nitrotyrosine staining (NTR). The concentrations of nitric oxide and lipoperoxides were largely increased. SOD medication reduced hepatic enzyme release by 30% and lipoperoxides by nearly 50%. Apoptosis and NTR were significantly decreased, and PVP was strikingly reduced to normal values. A 3-fold enhancement in bile production and 1.5-fold increase in TAN of the liver tissue were also observed. Conclusion: NHBD livers are prone to severe reoxygenation injury promoted by oxygen free radicals, massive nitrite oxide production and peroxynitrite-induced apoptosis within the sinusoids. Antioxidant medication with SOD should be considered as a useful means of preserving NHBD livers." @default.
- W2005183822 created "2016-06-24" @default.
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- W2005183822 date "2008-01-01" @default.
- W2005183822 modified "2023-09-26" @default.
- W2005183822 title "Exogenous Superoxide Dismutase Prevents Peroxynitrite-Induced Apoptosis in Non-Heart-Beating Donor Livers" @default.
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- W2005183822 doi "https://doi.org/10.1159/000162294" @default.
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