title: Glomerular basement membrane alterations induced by gentamicin administration in rats.
abstract: The widespread therapeutic use of the aminoglycoside antibiotic gentamicin (GM) is limited by its nephrotoxic side effect, which can lead to acute renal failure. This study aimed at examining effects of high, supratherapeutic doses of gentamicin on morphological, structural and functional alterations of the glomerular basement membrane in adult rats. Experiments were done on 30 male Wistar rats, divided into two experimental groups. GM-group (20 rats) received gentamicin at a dose of 100mg/kg intraperitoneally during eight consecutive days. Control or C-group (10 rats) received 1 ml/day saline intraperitoneally. For histological analysis, 5 microm thick sections were stained with hematoxylin and eosin (HE), periodic acid Schiff (PAS), and Jones methenamine silver. Glomerular basement membrane thickness, glomerular area, major and minor axes, perimeter, diameter, roundness and mean optical density were analyzed. Biochemical analyses were used to determine concentrations of blood urea, serum creatinine, sodium and potassium. In GM-group rats, glomeruli were larger and glomerular basement membrane was diffusely and irregularly thickened with neutrophil cell infiltration. Glomerular area, major axis, minor axis, diameter and perimeter were significantly higher in GM-group compared to C-group rats. Opposite to this, glomerular optical density and average roundness were larger in C-group than in gentamicin-treated animals. Our results clearly showed morphological and structural alterations of glomeruli and glomerular basement membrane as well as alterations of proximal tubules in adult rats exposed to high doses of gentamicin.
authors.affiliation: Department of Physiology, University of Nis School of Medicine, Nis, Serbia. mstoiljkovic@yahoo.com
authors.forename: Nenad
authors.initials: N
authors.lastname: Stojiljkovic
authors.forename: Dragan
authors.initials: D
authors.lastname: Mihailovic
authors.forename: Slavimir
authors.initials: S
authors.lastname: Veljkovic
authors.forename: Milan
authors.initials: M
authors.lastname: Stoiljkovic
authors.forename: Ivan
authors.initials: I
authors.lastname: Jovanovic
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000633:toxicity*; D003404:Creatinine / Q000097:blood; D005839:Gentamicins / Q000633:toxicity*; D050533:Glomerular Basement Membrane / Q000187:drug effects* / Q000473:pathology; D007274:Injections, Intraperitoneal; D007674:Kidney Diseases / Q000097:blood / Q000139:chemically induced* / Q000473:pathology; D007678:Kidney Glomerulus / Q000187:drug effects / Q000473:pathology; D007687:Kidney Tubules, Proximal / Q000187:drug effects / Q000473:pathology; D008297:Male; D010503:Periodic Acid-Schiff Reaction; D011188:Potassium / Q000097:blood; D051381:Rats; D017208:Rats, Wistar; D016622:Silver Staining; D012964:Sodium / Q000097:blood; D014508:Urea / Q000097:blood
chemical_list: D000900:Anti-Bacterial Agents; D005839:Gentamicins; D014508:Urea; D012964:Sodium; D003404:Creatinine; D011188:Potassium