Metabolic inhibition potentiates oxidant injury

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Metabolic inhibition potentiates oxidant injury.

Toxic oxygen species have been implicated as important mediators of injury after reperfusion of an ischemic organ. The aim of this study was to determine if prior metabolic inhibition, such as that which occurs during ischemia, potentiates oxidant injury in vitro. Bovine pulmonary artery endothelial cells were metabolically inhibited for various periods of time with or without the mitochondrial...

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Hemoglobin potentiates oxidant injury in isolated rat lungs.

Isolated perfused rat lungs were subjected to oxidant injury induced by tert-butyl hydroperoxide (t-buOOH), which caused a significant increase in capillary permeability as assessed by the change in the capillary filtration coefficient. t-buOOH caused an increase in the change in the capillary filtration coefficient (delta Kfc) of 0.27 +/- 0.05 ml.min.cmH2O-1.100 g lung tissue-1 (mean +/- SE) t...

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Glutathione Peroxidase Potentiates the Inhibition

GSH peroxidase (Px) catalyzes the reduction of lipid hydroperoxides (LOOH), known metabolic products of platelets and vascular cells. Because interactions between these cells are modulated by nitric oxide (NO) and LOOH inactivate NO, we investigated the effect of GSH-Px on the inhibition of platelet function by the naturally occurring S-nitrosothiol, S-nitroso-glutathione (SNO-Glu). Concentrati...

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DPP4 inhibition attenuates filtration barrier injury and oxidant stress in the Zucker obese rat

OBJECTIVE Obesity-related glomerulopathy is characterized initially by glomerular hyperfiltration with hypertrophy and then development of proteinuria. Putative mechanisms include endothelial dysfunction and filtration barrier injury due to oxidant stress and immune activation. There has been recent interest in targeting dipeptidyl peptidase 4 (DPP4) enzyme due to increasing role in non-enzymat...

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Thioredoxin reductase inhibition elicits Nrf2-mediated responses in Clara cells: implications for oxidant-induced lung injury.

AIMS Pulmonary oxygen toxicity contributes to lung injury in newborn and adult humans. We previously reported that thioredoxin reductase (TrxR1) inhibition with aurothioglucose (ATG) attenuates hyperoxic lung injury in adult mice. The present studies tested the hypothesis that TrxR1 inhibition protects against the effects of hyperoxia via nuclear factor E2-related factor 2 (Nrf2)-dependent mech...

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ژورنال

عنوان ژورنال: Journal of Surgical Research

سال: 1991

ISSN: 0022-4804

DOI: 10.1016/0022-4804(91)90197-t