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Deprecated: Implicit conversion from float 243.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Oxid+Med+Cell+Longev 2016 ; 2016 (ä): ä Nephropedia Template TP
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Dexmedetomidine Pretreatment Attenuates Kidney Injury and Oxidative Stress during Orthotopic Autologous Liver Transplantation in Rats #MMPMID26682005
Yu X; Chi X; Wu S; Jin Y; Yao H; Wang Y; Xia Z; Cai J
Oxid Med Cell Longev 2016[]; 2016 (ä): ä PMID26682005show ga
This paper aims to explore whether pretreatment with dexmedetomidine (Dex) has antioxidative and renal protective effects during orthotopic autologous liver transplantation (OALT) and its impact on nuclear factor erythroid 2-related factor 2 (Nrf2) activation. Sprague-Dawley rats were randomized into groups that include sham-operated (group S), model (group M), low dose Dex (group D1), high dose Dex (group D2), atipamezole (a nonspecific ?2 receptor blocker) + high dose Dex (group B1), ARC239 (a specific ?2B/c receptor blocker) + high dose Dex (group B2), and BRL-44408 (a specific ?2A receptor blocker) + high dose Dex (group B3). Then histopathologic examination of the kidneys and measurement of renal function, the renal Nrf2 protein expression, and oxidants and antioxidants were performed 8 hours after OALT. We found that pretreatment with Dex activated Nrf2 in glomerular cells and upregulated antioxidants but reduced oxidants (all P < 0.01, group D2 versus group M). Atipamezole and BRL-44408, but not ARC239, reversed these protective effects. In conclusion, pretreatment with Dex activates Nrf2 through ?2A receptor, increases the antioxidant levels, and attenuates renal injury during OALT.