title: Effects of deferasirox on renal function and renal epithelial cell death.
abstract: Iron-chelating therapy results in a significant improvement in the life expectancy of patients with transfusional iron overload. However, alterations of renal function have been observed in some patients undergoing chelation therapy. In the present study we evaluated the effect of treatment with deferasirox iron chelator on the renal function in normal Wistar rats and in mouse and human cultured tubular cell lines. Results indicate that deferasirox given daily via intraperitoneal route for 7 days induced: (1) an increased urinary protein, albumin and glucose excretion, (2) tubular necrosis/apoptosis, (3) and increased tubular damage markers, in spite of normal glomerular function. Moreover, in vitro studies revealed that: (1) mouse MCT cultures resulted more susceptible to the antiproliferative/cytotoxic effect of deferasirox, mainly at 24h after treatment, than human HK-2 cultures, (2) MCT cell content of damage molecules increased after 24h of iron chelator treatment with slight changes in their excretion into the culture medium and (3) MCT cultures showed a significant evidence of apoptotic cell death through an increased expression and activation of caspase-3 and marked DNA fragmentation. In conclusion, this renal side effect of deferasirox-chelating therapy seems to be based on direct toxic effects of deferasirox on renal tubular cells.
authors: Renal and Cardiovascular Research Unit, Department of Physiology and Pharmacology, University of Salamanca, Salamanca, Spain; Instituto Reina Sofia de Investigación Nefrológica, Spain.
authors: Penélope D
authors: PD
authors: Sánchez-González
authors: Francisco J
authors: FJ
authors: López-Hernandez
authors: Ana I
authors: AI
authors: Morales
authors: Juan F
authors: JF
authors: Macías-Nuñez
authors: Jose M
authors: JM
authors: López-Novoa
mesh_terms: D000118:Acetylglucosaminidase / Q000652:urine; D000818:Animals; D017209:Apoptosis / Q000187:drug effects; D001565:Benzoates / Q000633:toxicity*; D015815:Cell Adhesion Molecules / Q000652:urine; D002460:Cell Line; D002642:Chick Embryo; D051152:Clusterin / Q000652:urine; D055316:Cystatin C / Q000652:urine; D000077588:Deferasirox; D004847:Epithelial Cells / Q000187:drug effects / Q000473:pathology; D005919:Glomerular Filtration Rate / Q000187:drug effects; D006651:Histocytochemistry; D007502:Iron Chelating Agents / Q000633:toxicity*; D007668:Kidney / Q000187:drug effects / Q000473:pathology; D007674:Kidney Diseases / Q000139:chemically induced* / Q000473:pathology / Q000652:urine; D054834:Lipocalins / Q000652:urine; D008297:Male; D051381:Rats; D017208:Rats, Wistar; D014230:Triazoles / Q000633:toxicity*
chemical_list: D000118:Acetylglucosaminidase; D001565:Benzoates; D015815:Cell Adhesion Molecules; D051152:Clusterin; D055316:Cystatin C; D000077588:Deferasirox; D007502:Iron Chelating Agents; D054834:Lipocalins; D014230:Triazoles; C498500:Clu protein, rat; C110936:Havcr1 protein, rat