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Radiological iodinated contrasts (IC) agents cause acute kidney injury (AKI). To evaluate the renoprotective effect of sodium bicarbonate (Bic) on renal function (creatinine clearance [Clcr], Jaffé, and Clcr mLmin -1 x100 g-1) and the oxidative profile (peroxide excretion, 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-1xday-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 after saline treatment), and Bic + IC (3-ml/kg Bic, i.p., 1 h before and after 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 +Clgroup, 0.51+/- 0.04/0.13+/- 0.3/1.80+/- 0.04; p&lt;0.05). The protective effect of Bic in the IC-induced AKI was confirmed; hence, Bic administration may be considered as a therapeutic option for patients undergoing IC-enhanced radiography.

O efeito protetor do bicarbonato de sódio na nefropatia induzida por contraste radiológico em ratos