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Öğe 8-Isoprostane and Coenzyme Q10 Levels in Patients with Metabolic Syndrome(Mary Ann Liebert, Inc, 2016) Ercan, Humeyra; Kiyici, Aysel; Marakoglu, Kamile; Oncel, MufideBackground: Metabolic syndrome has become an important health problem, which involves obesity, hyper-lipidemia, insulin resistance, and high blood pressure values. The components of metabolic syndrome are all suggested as independent cardiovascular disease risk factors along with high mortality and morbidity rates accompanied by many organ and system complications. Objective: We aimed to determine 8-isoprostane (8-IsoP) and coenzyme Q10 (CoQ10) levels in patients with metabolic syndrome and healthy individuals and demonstrate whether there was any relation between these parameters and metabolic syndrome criteria. Materials and Methods: A total of 30 patients (10 male, 20 female) with metabolic syndrome and 20 age-matched healthy individuals (9 male, 11 female) were involved in the study. Body mass index, waist and hip circumferences, systolic and diastolic blood pressures and serum glucose, triglyceride, total cholesterol, high-density lipoprotein cholesterol, insulin, HbA1c, 8-IsoP and CoQ10 levels, and homeostasis model assessment of insulin resistance indexes of all participants were determined. Results: 8-IsoP levels were significantly increased in metabolic syndrome compared to healthy individuals (P = 0.003), however, there was no significant difference between groups for CoQ10 levels. 8-IsoP levels were positively correlated with waist circumference (r = 0.303, P=0.032), diastolic blood pressure (r = 0.337, P = 0.017), systolic blood pressure (r = 0.329, P = 0.020) values and total cholesterol levels (r = 0.354, P=0.012). Conclusion: We can suggest that the levels of 8-IsoP, which is an indicator of the oxidative stress, increase in metabolic syndrome and this can be associated with high blood pressure and visceral adiposity, which are the components of metabolic syndrome.Öğe Cigarette smoke and bleomycin-induced pulmonary oxidative stress in rats(Spandidos Publ Ltd, 2012) Teke, Turgut; Maden, Emin; Kiyici, Aysel; Korkmaz, Celalettin; Gok, Mehmet; Ozer, Faruk; Imecik, OktayBleomycin causes pulmonary fibrosis by increasing free oxygen radicals. Cigarette smoke is a strong oxidant which adversely affects pulmonary tissue. We evaluated the effects of cigarette smoke administered with intratracheal bleomycin on pulmonary tissue. We studied 3 groups of rats (n=10): one group received intratracheal saline and served as a control; one received intratracheal Neomycin (IT) (0.5 U/100 g body weight, single dose on the first day), and one group received intratracheal bleomycin (single dose on first day) and tobacco smoke (two times per day) (IT-S). After 4 weeks, the levels of malondialdehyde (MDA) and nitric oxide (NO) and the activities of superoxide dismutase (SOD) and xanthine oxidase (XO) were assayed in the homogenate of the lung tissue samples. The severity of interstitial fibrosis was assessed using the grading system described by Ashcroft. There was more intensive fibrosis in the IT and IT-S than in the control samples (P<0.001). The levels of MDA., NO and activity of XO were significantly increased (P<0.001, <0.002 and <0.002, respectively), and SOD activity (P<0.001) was significantly decreased in the IT group when compared to these values in the control group. The concentration of NO was significantly decreased (P<0.002), and SOD activity was significantly increased (P<0.05) in the lung tissue samples of the IT-S group. Theoretically, the combination of cigarette smoke and bleomycin may have a synergistic effect on oxidative lung injury. In conclusion, we showed that inhalation of cigarette smoke provides protection against oxidative stress in the lung tissue of rats with bleomycin-induced pulmonary fibrosis.Öğe Does obesity change the effect of aromatase inhibitors (AIs) on estradiol, leptin, insulin, and IGF-1 serum levels in breast cancer patients?(Amer Soc Clinical Oncology, 2012) Artac, Mehmet; Askin, Dudu; Kiyici, Aysel; Eren, Onder Orhan; Oncel, Mufide; Boruban, Melih Cem; Bozcuk, Hakan Sat[Abstract Not Availabe]Öğe The effects of ketamine and lidocaine on free radical production after tourniquet-induced ischemia-reperfusion injury in adults(Turkish Assoc Trauma Emergency Surgery, 2019) Peker, Kevser; Okesli, Selmin; Kiyici, Aysel; Deyisli, CemileBACKGROUND: The primary aim of this study was to compare the effects of a small-dose infusion of 2 antioxidant agents, ketamine and lidocaine, on ischemia-reperfusion injury (IRI) in patients undergoing elective lower limb surgery. Ischemia-modified albumin (IMA), lactate, and blood gas levels were all measured and assessed. METHODS: A total of 100 patients who underwent lower extremity surgery were randomized into 3 groups. After spinal anesthesia, the ketamine group (Group K, n= 33) was given a ketamine infusion, a lidocaine infusion was administered to the lidocaine group (Group L, n= 33), and in the control group (Group C), 0.9% a sodium chloride infusion was performed. Blood samples were obtained for IMA analysis before anesthetic administration (baseline), at 30 minutes of tourniquet inflation (ischemia), and 15 minutes after tourniquet deflation (reperfusion). Arterial blood gas measurements were determined before anesthetic administration and 15 minutes after tourniquet deflation. RESULTS: The lactate and IMA levels at reperfusion were significantly lower in both the ketamine group and the lidocaine group when compared with the control group. CONCLUSION: The administration of both ketamine and lidocaine infusions significantly decreased skeletal muscle IRI-related high lactate and IMA levels. These results suggest the possibility of the clinical application of ketamine or lidocaine infusions in cases of skeletal muscle-related IRI.Öğe MMP-2, TIMP-2, and MMP-2/TIMP-2 complex levels in epidermoid lung cancer(Tubitak Scientific & Technological Research Council Turkey, 2013) Oncel, Mufide; Akoz, Mehmet; Oncel, Murat; Kiyici, Aysel; Apiliogullari, BurhanAim: To investigate serum levels of MMP-2, TIMP-2, and MMP-2/TIMP-2 complex in epidermoid lung cancer and determine whether one of these markers or any combination of them can be used as a prognostic factor and in the management of this disease. Materials and methods: Twenty-eight patients with non-small cell lung cancer and 21 healthy, age-matched individuals participated in this study. MMP-2, TIMP-2, and MMP-2/TIMP-2 complex levels were measured in the sera of the patients and controls with the ELISA technique. Results: MMP-2, TIMP-2, and MMP-2/TIMP-2 complex levels were significantly elevated in patients with non-small cell lung cancer compared to the controls (P = 0.018, 0.041, and 0.034, respectively). Conclusion: MMP-2, TIMP-2, and MMP-2/TIMP-2 complex levels increased not only in lung tissues, but in the sera of the patients with non-small cell lung cancer. However, further studies are needed to fully evaluate the expression rates and diagnostic efficiency of these parameters in different histopathological subtypes of this cancer and in prospective research with a large number of participants.Öğe Obstructive Sleep Apnea Syndrome May Be a Risk Factor for the Development of Osteoporosis in Men at an Early Age?(Aves, 2015) Aslan, Saadet Han; Yosunkaya, Sebnem; Kiyici, Aysel; Sari, OktayObjective: Chronic intermittent hypoxia due to respiratory events occurring during sleep and sleep fragmentation due to arousals in obstructive sleep apnea syndrome (OSAS) may affect bone mineral density (BMD) directly or may be by causing a change in BMD through effects on hormones. We aimed to investigate whether any BMD change or any change in the level of hormones [growth hormone (GH), insulinlike growth factor-1 (IGF-1), free testosterone, total testosterone, and sex hormone-binding globulin (SHBG)], which may be related to BMD, occurs in middle-aged male patients with OSAS and compare the same with normal individuals. Material and Methods: Blood samples were collected from the participants in the morning (07.00-08.00 AM) after applying polysornnography for diagnosis. CH, IGF-1, total testosterone, and SHBG levels were measured using the enzyme-linked imrnunosorbent assay method, whereas the free testosterone level was measured using the radioimmunoassay method. BMD was measured at the femoral neck and lumbar vertebra using the Dual energy X-ray absorptiornetry (DEXA) method. Results: Between the two groups of hormones levels and T-score values statistically significant difference was not obtained. There was a statistically significant positive relationship between age and T-score femur (p<0.001) and T-score vertebra (p=0.017) and between rapid eye movement sleep time and T-score femur (p=0.032) in the OSAS group. Although patients who have BMD <-2.5 in the OSAS group (5/24) was detected to be higher than the control group (0/22), the difference was not statistically significant (p=0.05). Conclusion: In this study, we demonstrated that OSAS may not be a risk factor in the development of osteoporosis in middle-aged male patients. In addition, there was no direct relation between BMD and chronic intermittent hypoxia, apnea hypopnea index, or excessive sleepiness. Furthermore, we could not obtain any distinct relationship between OSAS and hormonal parameters that affects BMD.Öğe Plasma leptin, neuropeptide Y, ghrelin, and adiponectin levels and carotid artery intima media thickness in epileptic children treated with valproate(Springer, 2012) Tokgoz, Huseyin; Aydin, Kursad; Oran, Bulent; Kiyici, AyselWeight gain is a common side effect of valproate (VPA) treatment, although the mechanism is not clear. Abnormal weight gain and obesity are associated with dyslipidemia, hypertension, and atherosclerosis. Measurement of the common carotid artery intima media thickness (CAIMT) gives a picture of early arterial wall alterations and, currently, is considered a noninvasive marker of premature atherosclerosis. The aim of the present study was to evaluate plasma insulin, leptin, neuropeptide Y (NPY), ghrelin, and adiponectin levels in children with epilepsy treated with VPA and to evaluate these parameters for early atherosclerosis. Twenty prepubertal children with idiopathic epilepsy treated with VPA were enrolled in this study. Body mass index (BMI) and fasting insulin glucose ratio (FIGR) were calculated, and the plasma insulin, leptin, NPY, ghrelin, and adiponectin levels; the lipid profiles; and CAIMT were measured for all subjects before the treatment and after a follow-up period of 6 and 12 months. When pretreatment values were compared with those at the end of 6 and 12 months, the mean BMI values, plasma insulin, leptin, NPY levels, and FIGR were increased, whereas the plasma ghrelin and adiponectin levels, lipid profiles, and CAIMT did not change significantly at the end of 6 and 12 months. These results suggest that weight gain during VPA treatment may be related to increases in insulin, leptin, and NPY levels. Additionally, in this study, no increase in the risk for early atherosclerosis was determined by CAIMT in children with epilepsy treated with VPA.Öğe The Role of Ischemia Modified Album in Acute Pulmonary Embolism(Elsevier Science Inc, 2013) Kaya, Zeynettin; Kayrak, Mehmet; Gul, Enes Elvin; Altunbas, Gokhan; Toker, Aysun; Kiyici, Aysel; Gunduz, Mehmet[Abstract Not Availabe]Öğe Serum leptin level and waist-to-hip ratio (WHR) predict the overall survival of metastatic breast cancer (MBC) patients treated with aromatase inhibitors (AIs)(Springer Japan Kk, 2013) Artac, Mehmet; Bozcuk, Hakan; Kiyici, Aysel; Eren, Orhan Onder; Boruban, Melih Cem; Ozdogan, MustafaOur objective was to determine whether serum leptin levels and obesity-related factors could affect outcome for metastatic breast cancer (MBC) patients treated with aromatase inhibitors (AIs). Sixty MBC patients treated with first line hormonal therapy were enrolled in this study. Median age was 51 years (range 28-75). Median leptin level was 19400 pg/ml (1970-91900) and estradiol level 29.6 pg/ml (4.0-181.9). Factors associated with overall survival in univariate analysis were age and waist-to-hip ratio (WHR), whereas only WHR retained significance in the multivariate analysis. However, no factor was associated with progression-free survival. However, WHR was found to be a significant prognostic marker only if the leptin level was a parts per thousand yen19400 pg/ml (HR = 0.38; 95% CI: 0.16-0.91). This study suggests that serum leptin levels and WHR together may serve as potential prognostic markers in MBC patients treated with AIs.
