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  • Title: Iron sucrose induced morphological and functional changes in the rat kidney.
    Author: Breborowicz A, Polubinska A, Górna K, Breborowicz M, Oreopoulos DG.
    Journal: Transl Res; 2006 Nov; 148(5):257-62. PubMed ID: 17145571.
    Abstract:
    Treatment of anemia in uremic patients requires simultaneous supplementation of erythropoietin and iron. Because of the impaired iron absorption from the gastrointestinal tract in conditions of renal insufficiency, intravenous supplementation is a treatment of choice in such conditions. Iron compounds used for intravenous supplementation induce several systemic side effects, and therefore, we studied the effect of chronic exposure to iron sucrose in rats on renal function. Experiments were performed on male Wistar rats, which were infused intraperitoneally every 4 days, for 28 days with iron sucrose in a dose 1 mg/kg bw or 10 mg/kg bw diluted in 20 mL of the dialysis fluid. Control animals were infused with plain dialysis fluid. Renal function was evaluated at the beginning and at the end of the study. Additionally morphology of the kidneys was evaluated in all animals after 28 days of the study. Chronic exposure of rats to iron sucrose resulted in increased accumulation of PAS-positive material in their glomeruli: + 38% at Fe 1 mg/kg bw P < 0.05 and + 42% at Fe 10 mg/kg/bw P < 0.01 and collagen in the peritubular area: + 40% at Fe 1 mg/kg bw P < 0.005 and + 77% at Fe 10 mg/kg/bw P < 0.001. Only renal clearance of urea was decreased by 53%, P < 0.01 in rats exposed to iron sucrose at a dose of 10 mg/kg bw. Chronic exposure of rats to iron sucrose results in morphologic changes of the kidney; however, mild impairment in renal function was observed only at the highest (10 mg Fe/kg bw) concentration of iron sucrose.
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