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RESUMOContrastes radiológicos iodados -CI são causa de lesão renal aguda -LRA. Avaliar o efeito renoprotetor do bicarbonato de sódio (Bic) sobre a função renal (clearance de crea nina, Jaff é, Clcr-ml/min/100g) e o perfi l oxida vo (excreção de peróxidos, PU e de malondealdeído urinários, FOX-2 e TBARs, nmol/mgCr ) em ratos com CI. Ratos machos adultos Wistar, 250-300g, tratados 1x/dia, por 5 dias, foram divididos nos grupos: Salina (solução salina 0,9%, 3ml/kg/dia, intraperitoneal-i.p.); CI (ioxitalamato de meglumina e sódio, 3ml/kg, i.p); Bic+Salina (Bic 3ml/kg, i.p, 1 hora antes e 1 hora depois da Salina); Bic+CI (Bic 3ml/ kg, i.p, 1 hora antes e 1 hora depois do CI).
DESCRITORES
ABSTRACTRadiological iodinated contrasts (IC) agents cause acute kidney injury (AKI). To evaluate the renoprotec ve eff ect of sodium bicarbonate (Bic) on renal func on (crea nine clearance [Clcr], Jaff é, and Clcr mL·min -1 100 g -1 ) and the oxida ve profi le (peroxide excreon, urinary peroxides, urinary malondialdehyde, FOX-2 expression, and thiobarbituric acid reactive substance [TBARS; nmol/mg Cr]) in rats treated with an IC agent. Adult male Wistar rats weighing 250-300 g were treated once daily for 5 days with one of the following treatments: saline (0.9%, 3 mL·kg -1 day -1 intraperitoneally [i.p.]), IC agent (sodium and meglumine ioxitalamate, 3 mL/kg, i.p.), Bic + Saline (3-mL/kg Bic, i.p., 1 h before and a er saline treatment), and Bic + IC (3-mL/kg Bic, i.p., 1 h before and a er the IC treatment). The IC agent induced AKI, and the antioxidant renoprotective effect of Bic was confirmed (Clcr/TBARS/urinary peroxide: saline group, 0.59 ± 0.03/0.11 ± 0.02/1.29 ± 0.24; Bic + Saline group, 0.58 ± 0.03/0.13 ± 0.02/1.32 ± 0.64; IC group, 0.22 ± 0.02/0.19 ± 0.02/4.77 ± 0.24; Bic + CI group, 0.51 ± 0.04/0.13 ± 0.3/1.80 ± 0.04; p<0.05). The protec ve eff ect of Bic in the ICinduced AKI was confi rmed; hence, Bic administra on may be considered as a therapeu c op on for pa ents undergoing IC-enhanced radiography.