title: Pentoxifylline ameliorates glomerular basement membrane ultrastructural changes caused by gentamicin administration in rats.
abstract: Gentamicin is commonly used for the treatment of severe gram negative bacterial infections but inevitably cause renal failure during prolonged use. The aim of our study was to emphasize protective effects of pentoxifylline on glomerular basement membrane (GBM) alterations induced by gentamicin in rats. Experiments were done on 40 male Wistar rats divided in three experimental groups. GM-group was treated daily with gentamicin in dose of 100 mg/kg during 8 days. PTX-group was treated daily with pentoxifylline in dose of 45 mg/kg and the same dose of gentamicin as in GM-group during 8 days. The control group received 1 ml/day saline intraperitoneally. Morphometric parameter measured during the analysis was glomerular basement membrane thickness. In GM-group of animals glomeruli were enlarged and GMB was diffusely and unequally thickened with neutrophil cells infiltration. In proximal tubules epithelial cells, vacuolization of cytoplasm with coagulation-type necrosis were observed. In PTX-group of animals glomeruli were somewhat enlarged and GBM was thickened only in some segments. Coagulation-type necrosis was not found. Blood urea and serum creatinine concentration in GM-group were significantly elevated in comparison with PTX-group while potassium level was decreased. Our results suggest that PTX has protective effects on GBM and proximal tubules in GM-treated rats.
authors.affiliation: Department of Physiology, University of Nis, Serbia.
authors.forename: Nenad
authors.initials: N
authors.lastname: Stojiljković
authors.forename: Slavimir
authors.initials: S
authors.lastname: Veljković
authors.forename: Dragan
authors.initials: D
authors.lastname: Mihailović
authors.forename: Milan
authors.initials: M
authors.lastname: Stoiljković
authors.forename: Goran
authors.initials: G
authors.lastname: Ranković
authors.forename: Ivan
authors.initials: I
authors.lastname: Jovanović
authors.forename: Pavle
authors.initials: P
authors.lastname: Randjelović
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000633:toxicity*; D017209:Apoptosis / Q000187:drug effects; D001485:Basement Membrane / Q000187:drug effects / Q000473:pathology / Q000648:ultrastructure; D005839:Gentamicins / Q000633:toxicity*; D007674:Kidney Diseases / Q000139:chemically induced* / Q000188:drug therapy* / Q000473:pathology; D007678:Kidney Glomerulus / Q000187:drug effects / Q000473:pathology / Q000648:ultrastructure; D007687:Kidney Tubules, Proximal / Q000187:drug effects / Q000473:pathology / Q000648:ultrastructure; D008297:Male; D009336:Necrosis; D010431:Pentoxifylline / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D014665:Vasodilator Agents / Q000494:pharmacology*
chemical_list: D000900:Anti-Bacterial Agents; D005839:Gentamicins; D014665:Vasodilator Agents; D010431:Pentoxifylline