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SIRT1/3 Activation by Resveratrol Attenuates Acute Kidney Injury in a Septic Rat Model
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SIRT1/3 Activation by Resveratrol Attenuates Acute Kidney Injury in a Septic Rat Model
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Journal Article
SIRT1/3 Activation by Resveratrol Attenuates Acute Kidney Injury in a Septic Rat Model
2016
Overview
Sepsis often results in damage to multiple organ systems, possibly due to severe mitochondrial dysfunction. Two members of the sirtuin family, SIRT1 and SIRT3, have been implicated in the reversal of mitochondrial damage. The aim of this study was to determine the role of SIRT1/3 in acute kidney injury (AKI) following sepsis in a septic rat model. After drug pretreatment and cecal ligation and puncture (CLP) model reproduction in the rats, we performed survival time evaluation and kidney tissue extraction and renal tubular epithelial cell (RTEC) isolation. We observed reduced SIRT1/3 activity, elevated acetylated SOD2 (ac-SOD2) levels and oxidative stress, and damaged mitochondria in RTECs following sepsis. Treatment with resveratrol (RSV), a chemical SIRT1 activator, effectively restored SIRT1/3 activity, reduced acetylated SOD2 levels, ameliorated oxidative stress and mitochondrial function of RTECs, and prolonged survival time. However, the beneficial effects of RSV were greatly abrogated by Ex527, a selective inhibitor of SIRT1. These results suggest a therapeutic role for SIRT1 in the reversal of AKI in septic rat, which may rely on SIRT3-mediated deacetylation of SOD2. SIRT1/3 activation could therefore be a promising therapeutic strategy to treat sepsis-associated AKI.
Publisher
Hindawi Publishing Corporation,John Wiley & Sons, Inc
Subject
/ Acute Kidney Injury - enzymology
/ Acute Kidney Injury - microbiology
/ Acute Kidney Injury - pathology
/ Acute Kidney Injury - prevention & control
/ Animals
/ Enzymes
/ Epithelial Cells - drug effects
/ Epithelial Cells - enzymology
/ Epithelial Cells - pathology
/ Female
/ Histone Deacetylase Inhibitors - pharmacology
/ Kidney Tubules - drug effects
/ Kidneys
/ Ligation
/ Male
/ Oxidative Stress - drug effects
/ Rodents
/ Sepsis
/ Signal Transduction - drug effects
/ Sirtuin 1 - antagonists & inhibitors
/ Studies
