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Öğe The effects of the non-volatile anaesthetic agents, propofol and thiopental, on erythrocyte sedimentation rate(Taylor & Francis As, 2007) Cağlayan, Osman; Büyükkoçak, Ünase; Kara, Fatma Karaca; Sert, ÖzgürObjectives. The reduction of erythrocyte sedimentation rate (ESR) induced by general anaesthesia was demonstrated in our previous study. The purpose of the present study was to investigate whether the type of induction agent (propofol or thiopental) used for general anaesthesia had any effects on ESR. Methods. Sixty-four patients (ASA Physical Status Classification, I-II) scheduled for elective surgery under general anaesthesia were randomly assigned into two groups. In Group I, propofol and in Group II, thiopental were used as induction agents. Two blood samples were obtained before induction and 10 minutes after endotracheal intubation for ESR measurements. Results. The ESR values of the second samples from both groups were significantly lower than the values of the first samples, but there were no statistically significant differences in ESR values between the values of the two groups. Conclusion. The results showed that general anaesthesia decreased ESR values regardless of the type of agents being used for induction of anaesthesia. The reason might be related to other drugs used in both groups, or to a common effector mechanism of the two induction agents. The underlying mechanism needs to be investigated.Öğe Plasma adrenomedullin levels in patients with polycystic ovary syndrome(Elsevier Science Inc, 2006) Uçar, Banu; Noyan, Volkan; Cağlayan, Osman; Yücel, Aykan; Sagsöz, NevinObjective: To evaluate adrenomedullin levels in patients. with polycystic ovary syndrome (PCOS). Design: Prospective study. Setting: Department of obstetrics and gynecology in a university hospital. Patient(s): Thirty-eight women with PCOS and 29 healthy control subjects were enrolled in the study. Intervention(s): Plasma. adrenomedullin, serum androstenedione, free T, T, DHEAS, SHBG, thyrotropin, PRL, FSH, LH, and E-2 were measured in each subject. Insulin resistance was estimated by fasting insulin level, fasting glucose:insulin ratio and 75-g glucose tolerance test for 2 hours. Main Outcome Measure(s): Plasma adrenomedullin levels and, correlations among adrenomullin and gonadotropins , female sex steroids, androgens, and insulin resistance. Result(s): There was no significant difference concerning plasma adrenomullin concentrations between the groups. In patients with PCOS, fasting glucose, fasting insulin, body mass index, and free T were inversely 179 y correlated with glue correlated with the plasma adrenomedullin. Plasma adrenomedullin was significantly correlated with glucose: insulin ratio. After controlling for, body mass index, there were no significant correlations between the above-mentioned parameters. Conclusion(s): Adrenomedullin may play a role in regulating the insulin metabolism in patients with PCOS.Öğe Protective effects of trapidil in ischemia-reperfusion injury due to testicular torsion and detorsion: An experimental study(Blackwell Publishing, 2006) Somuncu, Salih; Çakmak, Murat; Erdoğan, Sibel; Cağlayan, Osman; Akman, Hülya; Kaya, MuratObjective: We aimed to detect the preventive effects of trapidil in ischemia reperfusion (IR) injury due to testicular torsion and detorsion. Methods: Forty prepubertal albino rats were used. In the IR group, torsion was created by rotating the left testis over 2 h, and detorsion was done by untwisting the testis. Bilateral orchiectomies were performed after 4 h. In study group, 2-h torsion was performed and trapidil was administered as a single dose I h before detorsion. Bilateral orchiectomies were performed after 4 h. In the sham group, a sham operation was done. In the sham plus trapidil group, a sham operation was done and trapidil was administered as a single dose. Testicular tissue malondialdehyde (MDA), nitric oxide (NO) and total sulfhydryl (T-SH) levels were determined for each group. The grades of interstitial injury were determined in histopathologic examination. Results: The NO and MDA levels in the IR group were significantly higher than the study, sham and sham plus trapidil groups in the left testis (P < 0.05 P < 0.001 and P < 0.001, respectively). A statistical difference was not found among Study, sham and sham plus trapidil groups in the left testis in NO and MDA levels (P > 0.05). The T-SH level in the study group was significantly higher than in the IR. sham and sham plus trapidil groups in left testis P < 0.05). In the IR group (left testis), grade I interstitial injury was 30% (3/10), grade 2 injury was 60% (6/10) and grade 3 injury was 10% (1/10). In the study group (left testis), grade I interstitial injury was 30% (3/10) and there was no injury in 70% (7/10). Conclusion: Trapidil decreased free oxygen radical formation in testicular torsion and detorsion, and attenuated histopathological damage in the ipsilateral twisted testis.Öğe Similar effects of general and spinal anaesthesia on perioperative stress response in patients undergoing haemorrhoidectomy(Hindawi Ltd, 2006) Büyükkoçak, Ünase; Cağlayan, Osman; Daphan, Cağatay; Aydinuraz, Kuzey; Saygun, Oral; Kaya, Tahsin; Agalar, FatihSurgery induces release of neuroendocrine hormones (cortisol), cytokines (interleukin-6: IL-6, tumour necrosis factor-alpha: TNF-alpha), acute phase proteins (C-reactive protein: CRP, leptin). We studied the effects of general and spinal anaesthesia on stress response to haemorrhoidectomy. Patients were assigned to general and spinal anaesthesia groups (n = 7). Blood samples were drawn before induction and 24 hours after surgery. Perioperative levels of IL-6, TNF-alpha, CRP, cortisol, and leptin were comparable among the groups. Twenty four hours after surgery, TNF-alpha and cortisol did not change; IL-6 and CRP increased significantly in all patients. Significant increase in leptin levels was found in patients undergoing spinal anaesthesia. Except for the increase in leptin levels, there was no significant difference related to the effects of general and spinal anaesthesia. Copyright (c) 2006 Unase Buyukkocak et al.Öğe Testicular nitric oxide and thiobarbituric acid reactive substances levels in obstructive azoospermia: A possible role in pathophysiology of infertility(Hindawi Ltd, 2006) Basar, M. Murad; Kısa, Üçler; Tuğlu, Devrim; Yılmaz, Erdal; Basar, Halil; Cağlayan, Osman; Batislam, ErtanObjective. The aim of the study is to evaluate the levels of nitrite/nitrate and thiobarbituric acid reactive substances (TBARS) and their relationship with seminal parameters in experimental obstructive azoospermic rats to explain the possible mechanism of impaired sperm quality in obstructive azoospermia. Methods. A total of 10 male Spraque-Dawley rats underwent bilateral vas resection and ligation (Group-1 = vasectomy group). The findings were compared with control group (Group-2 = sham group, n = 10). Animals were sacrificed 8 weeks after surgery. Testes were removed and used for the evaluation of nitrate/nitrite and TBARS levels and for histology. Epididymal-aspirated seminal plasma was used for semen count and morphological analysis according to the Kruger criteria. Results. Testicular tissue nitrate/nitrite and TBARS levels were 35.7 +/- 3.1 mu mol/g protein and 3.7 +/- 0.1 nmol/g protein in Group-1, and 19.3 +/- 0.7 mu mol/g protein and 3.1 +/- 0.1 nmol/g protein in Group-2, respectively. Both parameters showed statistical differences between the two groups. Testicular tissue nitrate/nitrite and TBARS levels showed negative and statistically significant correlations with sperm motility and morphology. Conclusions. The present study showed that testicular nitrate/nitrite and TBARS levels were increased in obstructive azoospermia. For that reason, we concluded that antioxidant treatment can be recommended to patients before sperm extraction for artificial reproduction due to obstructive infertility after vasectomy reversal. Copyright (c) 2006 M. Murad Basar et al.
