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Öğe Atorvastatin causes regression of endometriotic implants in a rat model(Elsevier Sci Ltd, 2010) Yilmaz, Bulent; Ozat, Mustafa; Kilic, Sevtap; Gungor, Tayfun; Aksoy, Yasemin; Lordlar, Nese; Sut, NecdetEndometriotic implants were induced surgically in female Wistar albino rats, which were randomly divided into three groups. The rats in group I (n = 10) and group II (n = 9) were given 2.5 mg/kg/day intraperitoneal and oral atorvastatin, respectively, for 28 days. Group III (n = 9) was given no medication (control). The mean volume and weight of explants in group I were significantly lower (both P < 0.05) compared with group III. Histopathological score of the implants was significantly tower in groups I and II, when compared with group III (P < 0.01 and P < 0.05, respectively). There were significant reductions in explant concentrations of vascular endothelial growth factor and matrix metalloproteinase 9 in group I (P < 0.01 and P < 0.001, respectively) and group II (both P < 0.01) compared with group III while staining due to tissue inhibitor of metalloproteinase 2 was significantly higher in group I (P < 0.01) and group II (P < 0.01) compared with group III. Moreover, explant concentration of superoxide dismutase was significantly increased in groups I and II compared with group III (both P < 0.05). In conclusion, atorvastatin causes significant regression of endometriotic implants in rats. Moreover, intraperitoneal atorvastatin seems to be more effective than oral atorvastatin. (C) 2009, Reproductive Healthcare Ltd. Published by Elsevier Ltd. All rights reserved.Öğe Metformin and atorvastatin reduce adhesion formation in a rat uterine horn model(Reproductive Healthcare Ltd, 2009) Yilmaz, Bulent; Aksakal, Orhan; Gungor, Tayfun; Sirvan, Levent; Sut, Necdet; Kelekci, Sefa; Soysal, SunullahThe aim of the present study was to determine whether atorvastatin and metformin are effective in preventing adhesions in a rat uterine horn model. A total of 40 non-pregnant, female Wistar albino rats, weighing 180-210 g, were used as a model for post-operative adhesion formation. The rats were randomized into four groups after seven standard lesions were inflicted in each uterine horn and lower abdominal sidewall using bipolar cauterization. The rats were given atorvastatin 2.5 mg/kg/day, p.o. (10 rats), atorvastatin 30 mg/kg/day, p.o. (10 rats), metformin 50 mg/kg/day, p.o. (10 rats) and no treatment was applied in the control group (10 rats). The animals were killed 2 weeks later and adhesions were scored both clinically and pathologically by authors blinded to groups. One rat in the control group died before the end of the 2 week period. Total clinical adhesion scores regarding extent, severity and degree of adhesions and histopathological findings including inflammation and fibrosis were significantly lower in the metformin (P < 0.001 and P < 0.01, respectively) and atorvastatin 30 mg/kg/day (P < 0.001 and P < 0.01, respectively) groups when compared with control group. Metformin and atorvastatin are both effective for prevention of adhesion formation in a rat uterine horn model.Öğe A randomised controlled trial on melatonin and rosiglitazone for prevention of adhesion formation in a rat uterine horn model(Springer Heidelberg, 2010) Aksakal, Orhan; Yilmaz, Bulent; Gungor, Tayfun; Sirvan, Levent; Sut, Necdet; Inan, Ismet; Kalyoncu, SenolTo investigate the effectiveness of melatonin and rosiglitazone in reducing postoperative adhesion formation in a rat uterine horn model. Thirty non-pregnant female Wistar albino rats, weighing 180-220 g, were used as a model for postoperative adhesion formation. The rats were randomised into three groups after seven standard lesions were inflicted in a 2-cm segment of each uterine horn and lower abdominal sidewall using bipolar cauterisation. The rats were treated with 10 mg/kg, intraperitoneal melatonin, and 1 mg/kg per day peroral rosiglitazone. No medication was given to the control group. As much as 20 uterine horns of 10 rats were evaluated in each group. Extent, severity, and degree of the adhesions to the uterine horns and, inflammation and fibrosis scores (histopathologically) were evaluated after 2 weeks of the treatment. There was no mortality in the groups and all of the rats recovered without incident after operation. Rosiglitazone group had lower adhesion scores [median (min-max ranges)] regarding extent, severity, and degree of the adhesions [0 (0-3), 0 (0-3) and 0 (0-3), respectively], which were significantly different (P < 0.001, P < 0.05 and P < 0.01, respectively) from those of the controls [1 (0-3), 2 (0-2) and 2 (0-3), respectively]; however, there were no statistically significant differences between rosiglitazone versus melatonin groups [1 (0-4), 2 (0-3) and 1 (0-3), respectively] and melatonin versus control groups. Moreover, no significant differences were determined between groups regarding histopathologic findings. Rosiglitazone, but not melatonin, is effective in prevention of adhesion formation in a rat uterine horn model.Öğe The Role of Vaginal pH on Efficacy of Controlled-Release Dinoprostone Vaginal Insert for Cervical Ripening/Labor Induction: A Prospective Double-Blind Study(Galenos Yayincilik, 2008) Onen, Fiahin; Ozaksit, Gulnur; Yilmaz, Bulent; Gungor, Tayfun; Bilge, Umit; Sut, Necdet; Mollamahmutoglu, LeylaObjective: To evaluate if vaginal pH has any effect on the efficacy of controlled-release PGE 2 vaginal insert for cervical ripening/labor induction in post-term patients. Materials and Methods: Sixty-three post-term women with unfavorable cervix (Bishop's score +/- 6) undergoing labor induction were enrolled in this prospective, double-blinded trial. All patients received sustained-release dinoprostone vaginal insert for cervical ripening/labor induction during 12 hours, repeated dosing one time 24 hours later. Results: Women with a low vaginal pH (>4.5, n= 38) and women with a high vaginal pH (> 4.5, n= 25) were similar in maternal age, parity, body mass index, gestational age or initial Bishop's score. Bishop's score change over the initial 12 hours significantly (p<0.05) differed between the low vaginal pH (3.9 +/- 3.3) and the high vaginal pH group (5.5 +/- 3.4). Time to active labor (14.7 +/- 17.3 hrs vs 13.1 +/- 9.8 hrs), complete dilation (19.6 +/- 20.1 hrs vs 17.1 +/- 11.8 hrs) and delivery (20.0 +/- 21.4 hrs vs 17.6 +/- 12.0 hrs) were comparable between the low and high vaginal pH groups, respectively. Linear regression analysis revealed no significant association between vaginal pH and Bishop's score change over 12 hours, time to active labor, time to complete dilation, or time to delivery. Discussion: Vaginal pH has significant effect on cervical ripening but has no effect on delivery outcomes in post-term patients with unfavorable cervices, who undergo cervical priming/labor induction using sustained-release dinoprostone vaginal insert.