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- W2006266411 abstract "Statins, inhibitors of 3-hydroxy-3-methyl-glutaryl-coenzyme A (HMG-CoA) reductase, can have protective effects in various organs. We determined whether application of statins after a detrimental insult protected endothelial cells. Bovine pulmonary arterial endothelial cells (BPAEC) were subjected to a 5-h oxygen-glucose deprivation (OGD) and a 1-h simulated reperfusion. Simvastatin or atorvastatin alone or plus mevalonate (the immediate product of the reaction mediated by HMG-CoA reductase), geranylgeranyl pyrophosphate (GGPP, a product downstream of mevalonate), Ly294002 (a protein kinase B/Akt inhibitor), U0126 [an extracellular signal-regulated kinase (ERK) pathway inhibitor] or diphenyleneiodonium [a nicotinamide adenine dinucleotide phosphate (NADPH) oxidase inhibitor] were added to cells immediately after the OGD for 1h. Simvastatin and atorvastatin dose-dependently reduced the OGD and simulated reperfusion-induced lactate dehydrogenase (LDH) release from primary BPAEC and BPAEC between passage 4 and 15. This effect was inhibited by mevalonate, GGPP and Ly294002 and was not affected by U0126. Consistent with those results, simvastatin and atorvastatin increased the expression of phospho-Akt/activated Akt, and did not change the expression of phospho-ERK/activated ERK after the OGD and simulated reperfusion. The OGD and simulated reperfusion-induced LDH release and superoxide production, as measured by the dihydroethidium fluorescent intensity, were inhibited by diphenyleneiodonium. These results suggest that statin post-treatment reduces OGD and simulated reperfusion-induced cell injury. This effect may be mediated by inhibiting HMG-CoA reductase and the subsequent inhibition of small GTPases. GTPase activation depends on GGPP generation and contributes to the formation of NADPH oxidase complex that produces superoxide. The statin post-treatment-induced protection may also involve activated Akt." @default.
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- W2006266411 date "2010-06-01" @default.
- W2006266411 modified "2023-09-26" @default.
- W2006266411 title "Statin post-treatment provides protection against simulated ischemia in bovine pulmonary arterial endothelial cells" @default.
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- W2006266411 doi "https://doi.org/10.1016/j.ejphar.2010.03.028" @default.
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