Browsing by Author "Kurban, Sevil"

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Influence of Exercise on Leptin, Adiponectin and Quality of Life in Type 2 Diabetics
(2015) Dede, Nesrin Dogan; Ipekci, Suleyman Hilmi; Kebapcilar, Levent; Arslan, Mihriban; Kurban, Sevil; Yildiz, Mustafa; Gonen, Mustafa Sait
Purpose: This study aimed to investigate the influence of aerobic exercise on the quality of life and leptin and adiponectin levels in patients with type 2 diabetes mellitus. Material and Method: Patients were randomized into two groups: aerobic exercise-training and control group. Parameters were assessed at baseline and end of the twelve-week follow-up for 60 type 2 diabetic patients who completed the program. The 36-item Short Form Health Survey was administered to the patients. Results: The exercise-training group results showed a decrease in adiponectin and leptin levels, a reduction of waist circumference and percentage of body fat (p=0.007, 0.023, 0.012 and 0.048, respectively). The leptin levels in the aerobic exercise group were positively correlated with body mass index (r=0.303, p=0.021) and percentage of body fat (r=0.371, p=0.005); they were negatively correlated with physical problems (r=-0.482; p=0.009) and pain (r=-0.540; p=0.003). Exercise led to statistically significant improvements in the SF-36 physical functioning and mental health subscales (p=0.020 and 0.023, respectively). Discussion: The association of better HbA1c, waist circumference, and percentage of body fat with improved mental and physical scores may be related to a decrease in leptin levels, despite a significant reduction in serum adiponectin levels.
Oxidant and Antioxidant Balance in Patients with Childhood Non-Cystic Fibrosis-Related Bronchiectasis
(2018) Gokturk, Bahar; Pekcan, Sevgi; Kose Karatas, Seda; Kurban, Sevil; Guner, Sukru Nail
Objective: To evaluate the role of the oxidant and antioxidant balance in the pathogenesis and prognosis of non-cystic fibrosis bronchiectasis (non-CF BE) in children. Materials and Methods: Twenty-nine children with non-CF BE were enrolled between June 2009 and October 2010. Thirty healthy children were enrolled as controls. Paraoxonase 1 (PON1), total oxidant status (TOS), and total antioxidant status (TAS) serum levels were measured in controls and in patients when stable and at acute exacerbation. Results: PON1 and TAS levels were lower in patients at acute exacerbation than in controls (P=0.05 and P=0.01, respectively). TOS levels indicative of oxidative stress were higher, and TAS/TOS levels were lower, in immune-deficient patients than control group (P=0.008 and P=0.01, respectively). TAS levels and PON1/TOS ratio were significantly lower in patients with moderate-severe bronchiectasis than in patients with mild bronchiectasis (P=0.043 and P=0.03, respectively). Conclusion: Oxidative stress was increased and antioxidant capacity decreased in patients with non-CF BE during the exacerbation period. Antioxidant treatment in patients with non-CF BE, especially in patients with immunodeficiency and/or with moderate-severe bronchiectasis, could be helpful to reduce the frequency and severity of the attacks by reducing oxidative stress-induced damage, ultimately contributing to a better prognosis.
The Role of the Central and the Peripheral Neuropeptides in Weight Gain and Metabolic Changes Related to Olanzapine
(2021) Arpaci, Nazile; Ak, Mehmet; Uguz, Faruk; Kurban, Sevil; Kulaksizoglu, Sevsen
Objective: This study aimed to examine the role of central and peripheral neuropeptides in olanzapine-induced weight gain and metabolic changes. Materials and Methods: Thirty patients who would receive olanzapine treatment were evaluated at the beginning of the treatment at the 2nd and 8th weeks. Weight, waist circumference, the central neuropeptides pro-opiomelanocortin (POMC) and neuropeptide Y (NPY), and the peripheral adipokine leptin and the peripheral peptide cholecystokinin (CCK) levels were measured in each control. In addition, biochemical parameters such as fasting blood glucose (FBG), aspartate aminotransferase (AST), alanine aminotransferase (ALT), gamma-glutamyl transferase (GGT), alkaline phosphatase (ALP), lactate dehydrogenase (LDH), total and direct bilirubin, very-low-density lipoprotein (VLDL), low-density lipoprotein (LDL), high-density lipoprotein (HDL), total cholesterol, and triglyceride (TG) were measured. Results: There were statistically significant differences weight and waist circumference levels compared to the initial levels. As observed in previous studies in the literature, changes in biochemical parameters including AST, ALT, total and direct bilirubin, LDL, TG, total cholesterol, and HDL levels were statistically significant. Levels of the neuropeptides POMC and NPY tended to increase at early stages and decrease at later stages of the treatment, while CCK and leptin levels kept increasing throughout the treatment period. The changes in POMC and CCK levels were statistically significant. Conclusion: The results suggest that POMC and CCK may play a role in olanzapine-related weight gain.