title: Peritoneal effects of intravenous iron sucrose administration in rats.
abstract: Intravenous iron supplementation is commonly used in uremic patients treated with peritoneal dialysis. Infusion of iron compounds results in various systemic noxious effects, mainly because of its prooxidant and proinflammatory actions. The authors studied how the intravenous infusion of iron sucrose (IS) affects intraperitoneal homeostasis in rats undergoing acute peritoneal dialysis. Experiments were performed on Wistar rats, which were infused intravenously with IS in a dose 10 mg/kg body weight or with normal saline in the controls. Simultaneously, 4-hour acute peritoneal dialysis was started. At the end of the dialysis, systemic and peritoneal inflammatory reaction and peritoneal permeability were evaluated. Compared with controls, rats exposed to IS showed increased dialysate iron concentration by +70%, P<0.001, and in the differential cell count, more eosinophils (+113%, P<0.05) and fewer macrophages (-16%, P<0.05) existed. In in vitro conditions, macrophages obtained from IS-treated rats released more tumor necrosis factor-alpha (TNF-alpha; +173%, P<0.05) upon stimulation with endotoxin. Additionally increased (+73%, P<0.01) dialysate elastase activity was found in IS-treated animals. Rats infused with IS demonstrated increased peritoneal permeability to total protein (+60%, P<0.001) as compared with control animals. When rats with simultaneous peritonitis received intravenous IS, ex vivo isolated peritoneal leukocytes generated more free radicals (+73%, P<0.05) than did cells harvested from control animals. It has been concluded that intravenous infusion of IS affects the intraperitoneal homeostasis in rats, moving it toward the inflammatory state. These changes may contribute to peritoneal damage.
authors.affiliation: Department of Pathophysiology, Poznan Medical School, Poznan, Poland. abreb@am.poznan.pl
authors.forename: Andrzej
authors.initials: A
authors.lastname: Breborowicz
authors.forename: Alicja
authors.initials: A
authors.lastname: Polubinska
authors.forename: Maciej
authors.initials: M
authors.lastname: Breborowicz
authors.forename: Marek
authors.initials: M
authors.lastname: Simon
authors.forename: Maria
authors.initials: M
authors.lastname: Wanic-Kossowska
authors.forename: Dimitrios G
authors.initials: DG
authors.lastname: Oreopoulos
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D015314:Dialysis Solutions / Q000737:chemistry; D004359:Drug Therapy, Combination; D004804:Eosinophils / Q000187:drug effects / Q000473:pathology; D005290:Ferric Compounds / Q000008:administration & dosage*; D000077605:Ferric Oxide, Saccharated; D005609:Free Radicals / Q000378:metabolism; D005937:Glucaric Acid; D006397:Hematinics / Q000008:administration & dosage*; D007262:Infusions, Intravenous; D007501:Iron / Q000032:analysis; D007962:Leukocytes / Q000187:drug effects / Q000378:metabolism; D008070:Lipopolysaccharides / Q000494:pharmacology; D017737:Macrophages, Peritoneal / Q000187:drug effects / Q000378:metabolism / Q000473:pathology; D008297:Male; D010196:Pancreatic Elastase / Q000378:metabolism; D010530:Peritoneal Dialysis; D010537:Peritoneum / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D010538:Peritonitis / Q000378:metabolism / Q000473:pathology; D010539:Permeability / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar; D014409:Tumor Necrosis Factor-alpha / Q000378:metabolism
chemical_list: D015314:Dialysis Solutions; D005290:Ferric Compounds; D005609:Free Radicals; D006397:Hematinics; D008070:Lipopolysaccharides; D014409:Tumor Necrosis Factor-alpha; D007501:Iron; D010196:Pancreatic Elastase; D000077605:Ferric Oxide, Saccharated; D005937:Glucaric Acid