The aim of the study is to investigate the effects of pentoxifylline (PTX) on the renal tubular cell injury and stone formation in a hyperoxaluric rat model induced by ethylene glycol and its possible underlying mechanisms. The study was performed with 30 male Wistar rats and randomized into three groups of teen. The sham-control (group 1) received only drinking water orally. The EG/untreated (group 2) received drinking water containing 0.75% EG for 4 weeks orally. The EG/PTX treated (group 3) received drinking water containing 0.75% EG for 4 weeks orally and PTX. Urine and blood were collected to determine some parameters. The kidneys were also removed for histological examination. Serum and urinary parameters were significantly improved in the EG/PTX treated. In the EG/PTX-treated group, the MDA, TOS and MPO activity reduced and the TAS, SOD, CAT and GSH-Px activities were increased markedly compared with the group 2. In urine of the group 2 rats, a large number of CaOx crystals were displayed and most tubules that contained crystals were dilated and showed degeneration, necrosis, and desquamation of the lining epithelium. Only few CaOx crystals were r in EG/PTX-treated animal's urine. Mild tissue damage was observed in PTX-treated rats. iNOS expression was significantly elevated in the group 2. In contrast, in the EG/PTX-treated group, eNOS expression in renal tubular epithelial cells was increased. Current study indicates that PTX may partially reduce renal tubular injury resulting from hyperoxaluria-induced oxidative and nitrosative stress.
Posterior crossbite is one of the most common craniofacial disorders in late-mixed or early permanent dentition. The prevalence of posterior crossbite in children was reported between 4% and 23%. 1 Rapid maxillary expansion (RME) is the gold standard in the treatment of maxillary transversal discrepancies. With the separation of the midpalatal suture in RME protocol, the arch length and the width of the maxilla are increased. Sutural expansion is followed by the active new bone formation at the midpalatal suture. 2 Hence, the factors
Over kaynaklı sklerozan stromal tümör genellikle otuz yaş altında görülen nadir tümörlerdendir. Solid ve belirgin damarsal yapıdan dolayı malignite düşünülebilmektedir. Olgumuz 17 yaşında anormal uterin kanama yakınması ile başvurmuş, alt karın ultrasonografisinde (USG) heterojen kistik kitle tespit edilmiştir. Bu makalede benign sklerozan stromal tümör olgusunun histopatolojik özellikleri ve ayırıcı tanısı sunulmuştur.
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