Seijas, M.Baccino, C.Nin, NicolásSánchez Rodríguez, CarolinaGranados Carreño, RosarioFerruelo, AntonioMartínez Caro, LeticiaRuiz Cabello, JesúsPaula, Marta deNoboa, O.Esteban, AndrésLorente Balanza, José Ángel2015-07-162015-07-162012Seija, M., Baccino, C., Nin, N., Sánchez-Rodríguez, C., Granados, R., Ferruelo, A., ... & Lorente, J. Á. (2012). Role of peroxynitrite in sepsis-induced acute kidney injury in an experimental model of sepsis in rats. Shock, 38(4), 403-410.1073232215400514http://hdl.handle.net/11268/4203The mechanisms involved in sepsis-induced acute kidney injury (AKI) are unknown. We investigated the role of nitrosative stress in sepsis-induced AKI by studying the effects of manganese (III) tetrakis-(1-methyl-4-pyridyl) porphyrin pentachloride (MnTMPyP), a peroxynitrite decomposition catalyst, and aminoguanidine (AG), a selective nitric oxide synthase 2 (NOS2) inhibitor and peroxynitrite scavenger, on kidney function of rats subjected to cecal ligation and puncture (CLP). Sprague-Dawley rats (weighing 350 [SD, 50] g) were treated with MnTMPyP (6 mg/kg i.p.) or AG (50 mg/kg i.p.) at t = 12 and 24 h after CLP or sham procedure. At t = 36 h, mean arterial pressure and aortic blood flow were measured, and blood and urine samples were obtained for biochemical determinations, including creatinine clearance, fractional excretion of sodium, and neutrophil gelatinase-associated lipocalin concentration in the urine. Kidney tissue samples were obtained for (i) light microscopy, (ii) immunofluorescence and Western blot for 3-nitrotyrosine and NOS2, (iii) gene expression (quantitative real-time polymerase chain reaction) studies (NOS1, NOS2, NOS3, and superoxide dismutase 1), and (iv) matrix-assisted laser desorption ionization time-of-flight mass spectrometry.engSepsisjournal article10.1097/SHK.0b013e31826660f2restricted accessSistema cardiovascularEnfermedad cardiovascular