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Öğe Attenuation of bleomycin-induced lung fibrosis by oral sulfhydryl containing antioxidants in rats(Academic Press Ltd Elsevier Science Ltd, 2005) Yidirim, Z; Kotuk, M; Iraz, M; Kuku, I; Ulu, R; Armutcu, F; Ozen, SAntioxidant therapy may be useful in diseases with impaired oxidant antioxidant balance such as lung fibrosis. The effects of sulfhydryl-containing antioxidant agents N-acetylcysteine (NAC) and erdosteine on the bleomycin-induced lung fibrosis were compared in rats. The animals were divided into four groups: Vehicle + vehicle, vehicle + bleomycin (2.5 U/kg), bleomycin + erdosteine (10 mg/kg), and bleomycin + NAC (3 mmol/kg). Bleomycin administration resulted in prominent lung fibrosis as measured by lung hydroxylproline content and lung histology which is almost completely prevented by erdosteine and NAC. Hydroxyproline content was 18.7 +/- 3.5 and 11.2 +/- 0.6 mg/g dried tissue in bleomycin and saline treated rats, respectively (P < 0.001), and this level was 11.3 +/- 1.2 and 13.8 +/- 1.2 mg/g dried tissue in erdosteine and NAC pretreated, respectively. Erdosteine and NAC significantly reduced depletion of glutathione peroxidase, and prevented increases in myeloperoxidase activities, nitric oxide, and malondialdehyde levels in lung tissue produced by bleomycin. Data presented here indicate that erdosteine and NAC similarly prevented bleomycin-induced lung fibrosis and their antioxidant effects were also similar in this experiment. (c) 2005 Elsevier Ltd. All rights reserved.Öğe Bismuth subcitrate nephrotoxicity - A reversible cause of acute oliguric renal failure(Karger, 2002) Sarikaya, M; Sevinc, A; Ulu, R; Ates, F; Ari, FBismuth subcitrate is a known nephrotoxic agent that may lead to acute oliguric renal failure when ingested in toxic doses. We report a 17-year-old girl who was admitted to the emergency room with complaints of nausea, vomiting, and anuria. She had taken 25 tablets containing 300 mg bismuth subcitrate (total 7.5 g). The patient was managed with hemodialysis started a week after ingestion. Bismuth subcitrate nephrotoxicity should be considered in the differential diagnosis of acute renal failure. Copyright (C) 2002 S. Karger AG, Basel.Öğe The frequency of gallbladder stones in patients width pernicious anemia(Academic Press Inc Elsevier Science, 2001) Aydogdu, I; Sari, R; Ulu, R; Sevinc, ABackground. Ineffective erythropoiesis and intramedullary hemolysis are the two important results of pernicious anemia. Hemolysis is one of the risk factors in the formation of gallbladder stones. Patients and methods. The frequency of gallstones was searched in 59 patients with pernicious anemia and in 54 healthy subjects. Results. Nineteen (32.2%) patients in the pernicious anemia group and three (5.5%) patients in the control group were detected to have gallstones. Pernicious anemia patients with and without gallbladder stones were also compared for mean corpuscular volume, hemoglobin, unconjugated bilirubin, lactic dehydrogenase, and vitamin B12 levels but no statistically significant difference was encountered. Conclusion. Apart from other risk factors, pernicious anemia itself increases the frequency of gallbladder stones. Should patients with pernicious anemia develop upper-abdominal pain or other symptoms referable to biliary tract disease, a high index of suspicion for gallstone-related disease should be maintained. (C) 2001 Elsevier Science.Öğe In vivo evidence suggesting a role for purine-catabolizing enzymes in the pathogenesis of cisplatin-induced nephrotoxicity in rats and effect of erdosteine against this toxicity(Wiley, 2004) Sögüt, S; Kotuk, M; Yilmaz, HR; Ulu, R; Özyurt, H; Yildirim, ZThe aim of this experimental study was to investigate the possible role of adenosine deaminase (AD) and xanthine oxidase (XO) in the pathogenesis of cisplatin-induced nephrotoxicity and the effect of erdosteine in decreasing the toxicity. The intraperitoneal injection of cisplatin (7m kg(-1) body weight) induced a significant increase in plasma creatinine level and blood urea nitrogen (BUN), and plasma and damaged renal tissue activities of AD and XO in rats. Co-treatment with erdosteine (10 mg kg(-1) day(-1)) attenuated the increase in the plasma creatinine and BUN levels, and significantly prevented the increase in tissue and plasma AD and XO activities (P < 0.05). The results of this study revealed that XO and AD may play an important role in the pathogenesis of cisplatin-induced nephrotoxicity. The potent free radical scavenger erdosteine may have protective potential in this process and it will become a promising drug in the prevention of this undesired side-effect of cisplatin. but further studies are needed to illuminate the exact protection mechanism of erdosteine against cisptatin-induced nephrotoxicity. Copyright (C) 2004 John Wiley Sons, Ltd.Öğe Maxillary brown tumor and uremic leontiasis ossea in a patient with chronic renal insufficiency(Dustri-Verlag Dr Karl Feistle, 2004) Taskapan, H; Taskapan, C; Baysal, T; Sahin, I; Ulu, R; Karadag, N; Kirimlioglu, VFindings of renal osteodystrophy in cranial bones are not uncommon and include osteomalacia, osteosclerosis, erosion of the cortical bone, brown tumors and resorption of the lamina dura. However, massive thickening of the cranial vault and facial bones, called uremic leontiasis ossea, have been reported very rare. In the present article, we describe the case of an uncooperative female patient with a brown tumor, involving the left maxillary sinus and massive thickening of the cranial vault and facial bones, secondary to severe secondary hyperparathyroidism during 8 years of regular hemodialysis treatment.
