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

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}, Jaffe, and Clcr mL·min-1⋅100 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-1⋅day-1intraperitoneally {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 + CI group, 0.51 ± 0.04/0.13 ± 0.3/1.80 ± 0.04; p<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.