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    The relationship between atherogenic index of plasma and epicardial adipose tissue in hemodialysis and peritoneal dialysis patients
    (Taylor & Francis Ltd, 2013) Erdur, Mehmet Fatih; Tonbul, Halil Zeki; Ozbiner, Huseyin; Ozcicek, Adalet; Ozcicek, Fatih; Akbas, Emin Murat; Ozbek, Orhan
    Introduction: Epicardial adipose tissue (EAT) is the true visceral fat depot of the heart. The relationship between coronary artery disease and EAT was shown in end-stage renal disease (ESRD) patients. One of the established risk factor in this population is dyslipidemia. We aimed to determine the relationship between atherogenic index of plasma (AIP) and EAT in ESRD patients. Methods: This was a cross-sectional study involving 76 ESRD patients receiving PD or HD for >= 6 months and 42 healthy subjects. EAT was measured by using an electrocardiogram-gated 64-multidetector computed tomography (MDCT). Atherogenic index of plasma was calculated as the logarithmically transformed ratio of the serum trigliseride to HDL-cholesterol. Results: The etiology of ESRD patients was diabetic nephropathy (n = 16), chronic glomerulonephritis (n = 10), hypertensive nephropathy (n = 23), polycystic kidney disease (n = 7), nephrolithiasis (n = 5) and unknown (n = 15). There were no differences with respect to the following variables between ESRD patients and healthy subjects: age; sex; BMI; predialysis levels of DBP; serum levels of albumin, HDL-cholesterol and hemoglobin. However, ESRD patients had higher serum levels of trigliseride, hs-CRP and AIP when compared to healthy subjects. There was a statistically significant relationship between EAT, BMI and AIP in ESRD patients (r = 0.42, p < 0.001 and r = 0.25, p = 0.028, respectively). The stepwise linear regression analysis revealed that age, as well as BMI were independent predictors of EAT. Conclusion: We found a relationship between EAT as defined by MDCT and AIP in ESRD patients. Further clinical and experimental studies are needed.
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    The relationship between FGF23 and anemia in HD and renal transplant patients
    (Springer, 2022) Baloglu, Ismail; Ozer, Hakan; Ozturk, Yasin; Erdur, Mehmet Fatih; Tonbul, Halil Zeki; Turkmen, Kultigin
    Purpose Recent studies claim that FGF23 is also associated with anemia and inflammation. In this study, the relationship between FGF23 and anemia in hemodialysis (HD) and renal transplantation patients (RTx patients) patients was investigated. Methods This was a cross-sectional study involving 40 RTx patients (13 females, 27 males; mean age, 45.93 +/- 12.49 years) who had transplantation at least 6 months before, 25 HD patients (12 females, 13 males; mean age, 54.72 +/- 15.5 years), and 20 healthy control subjects (13 females, 7 males; mean age, 36.7 +/- 9.38 years). FGF23 was studied using Elisa method. Parameters such as iron, ferritin, total iron binding capacity, and transferrin saturation were assessed. Results FGF23 level was significantly higher in HD patients when compared with the RTx patients and control groups. In the bivariate correlation analysis, hemoglobin was positively correlated with albumin (r = 0.681, p = 0.000), ferritin (r = 0.446, p = 0.043), and negatively correlated with CRP (r = - 0.476, p = 0.016) and FGF23 (r = 0.493, p = 0.043). FGF23 was found to be an independent predictor of decreased hemoglobin in HD patients. In addition, this association was observed to disappear after transplantation. Conclusion While FGF23 is closely related to hemoglobin levels in HD patients, we have shown that this relationship disappears after transplantation.