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    Increased hip circumference in individuals with metabolic syndrome affects serum nesfatin-1 levels
    (Bmj Publishing Group, 2020) Tekin, Tuba; Cicek, Betul; Konyaligil, Nurefsan; Gunturk, Inayet; Yazici, Cevat; Karaca, Zuleyha; Unlusavuran, Meltem
    Background This case-control study was conducted to investigate the relationship between serum nesfatin-1 levels and nutritional status and blood parameters in patients diagnosed with metabolic syndrome. Methods Thirty patients (case) diagnosed with metabolic syndrome according to National Cholesterol Education Program-Adult Treatment Panel III criteria were included. Thirty healthy subjects (control) matched with patients with metabolic syndrome in terms of age, gender and body mass index were included. Three-day food consumption records were obtained. Anthropometric indices were measured and body composition was determined by bioelectrical impedance method. Biochemical parameters and serum nesfatin-1 levels were measured after 8 hours of fasting. Results Serum nesfatin-1 levels were 0.245 +/- 0.272 ng/mL in the case group and 0.528 +/- 0.987 ng/mL in the control group (p>0.05). There was a positive significant correlation between serum nesfatin-1 levels and body weight, waist and hip circumferences in the case group (p<0.05). Each unit increase in hip circumference measurement affects the levels of nesfatin by 0.014 times. In the control group, there was a positive significant correlation between body weight and serum nesfatin-1 levels (p<0.05). A significant correlation was detected between HbA1c and serum nesfatin-1 levels in the case group (p<0.05). A significant relationship was detected between dietary fibre intake and the serum nesfatin-1 levels in the case group (p<0.05). Conclusions Anthropometric indices and blood parameters were correlated with serum nesfatin-1 levels in patients with metabolic syndrome. More clinical trials may be performed to establish the relationship between serum nesfatin-1 levels and nutritional status.
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    Serum visfatin levels are positively correlated with dietary carbohydrate and polyunsaturated fatty acid intakes in type 2 diabetes mellitus patients
    (Elsevier Science Inc, 2023) Ozturk, Nurefsan Konyaligil; Cicek, Betul; Tekin, Tuba; Gunturk, Inayet; Yazici, Cevat; Karaca, Zuleyha; Sonmez, Meltem
    Aims: To investigate the relationship between dietary intake and biochemical parameters and anthropometric measurements and serum visfatin concentrations. Study design: A case-control study. Methods: The study was carried out in 30 type 2 diabetes mellitus (T2DM) and 30 sex, age and body mass index (BMI) matches healthy control subjects. Biochemical parameters (glycemic and lipid profile, insulin resistance), anthropometric measurements (weight and bioimpedance) and dietary intake evaluation were obtained. Visfatin was assayed with ELISA method. Results: The mean BMI of the case group was 31.36 +/- 4.37 kg/m(2) and 29.80 +/- 3.53 kg/m(2) in the control group (p = 0.134). The results revealed a significant increase in the weight, waist circumference, waist/hip ratio, visceral fat ratio, fasting glucose level, HbA1c and fasting insulin as well as in insulin resistance (HOMA-IR) among T2DM patients when compared with controls (p < 0.05). Serum visfatin levels were higher in the subjects with T2DM than healthy control subjects (p < 0.05). There was no significant correlation between visfatin levels and biochemical parameters and anthropometric measurements in patients with T2DM. Serum visfatin level was positively correlated with carbohydrate (CHO) and polyunsaturated fatty acid (PUFA) in T2DM patients (r = 0.406, p = 0.026; r = 0.404, p = 0.027, respectively). Conclusion: T2DM patients compares with healthy control group increased serum visfatin levels. PUFA and CHO intake was found to be positively associated with visfatin levels.