Browsing by Author "Guliyev, O."

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Bioimpedance Analysis Reveals Graft Function in Renal Transplant Recipients
(2014) Sezer, S.; Demirci, B.; Guliyev, O.; Colak, T.; Sayin, C.; Haberal, M.; https://orcid.org/0000-0002-7326-8388; https://orcid.org/0000-0002-8372-7840; https://orcid.org/0000-0002-3462-7632; JYQ-2550-2024; AAJ-8554-2021; AAJ-8097-2021
Elevated FGF-23 Level Could Predict Progressive Arterial Stiffening and Graft Loss in Kidney Transplant Recipients
(2014) Sezer, S.; Bal, Z.; Uyar, M. Erkmen; Guliyev, O.; Erdemir, B.; Colak, T.; Haberal, M.; https://orcid.org/0000-0002-8372-7840; https://orcid.org/0000-0002-3462-7632; AAJ-8554-2021; AAJ-8097-2021
Fibroblast Growth Factor 23/Klotho Axis Is a Risk Factor for Kidney Transplant Loss
(2014) Sezer, S.; Bal, Z.; Uyar, M. Erkmen; Ozdemir, H.; Guliyev, O.; Yildirim, S.; Tutal, E.; Haberal, M.; https://orcid.org/0000-0002-7528-3557; https://orcid.org/0000-0002-5735-4315; https://orcid.org/0000-0002-3462-7632; AAZ-5795-2021; X-8540-2019; AAF-4610-2019; AAJ-8097-2021
Fibromyalgia and Its Clinical Relevance in Renal Transplant Recipients
(2014) Uyar, M. Erkmen; Sezer, S.; Bal, Z.; Guliyev, O.; Tutal, E.; Demirci, B. Gurlek; Haberal, M.; https://orcid.org/0000-0002-3462-7632; AAZ-5795-2021; AAJ-8097-2021
Graft Function and Arterial Stiffness: Can Bioimpedance Analysis Be Useful in Renal Transplant Recipients?
(2015) Sezer, S.; Demirci, B. Gurlek; Guliyev, O.; Sayin, C. B.; Colak, T.; Acar, F. N. Ozdemir; Haberal, M.; 0000-0002-5682-0943; 0000-0002-8372-7840; 0000-0002-3462-7632; 26036549; AAK-1697-2021; AAJ-8554-2021; AAJ-8097-2021
Objective. We aimed to determine the total body water (TBW) by means of bioimpedance analysis (BIA) and to analyze the association of TBW, graft function, and arterial stiffness by means of pulse-wave velocity (PWV) and echocardiographic measurements in renal transplant (RT) recipients. Methods. Eighty-two RT recipients (mean age, 38.7 +/- 11.5 y; 58 male) who were using >= 1 antihypertensive treatment were enrolled in the study. Biochemical parameters, 24-hour urinary protein loss, estimated glomerular filtration rate (eGFR), transthoracic echocardiography, bioimpedance analysis according to systolic blood pressure, TBW, lean tissue index (LTI), extracellular water (ECW), intracellular water (ICW), lean tissue mass (LTM), phase angle (Phi50) levels, and renal resistive index (RRI) were evaluated. Results. TBW and ECVV were significantly correlated with systolic blood pressure. Urinary protein loss, pulmonary artery pressure, frequency of overhydration, systolic blood pressure, TBW, LTI, ECW, ICVV, LTM, and Phi50 values were significantly higher in patients with estimated glomerular filtration rate (eGFR) 15-49 mL/min but similar in patients with eGFR 50-70 mL/min. Conclusions. Hypertensive RT recipients have increased TBW, LTI, ICW, FTI, LTM, and Phi50 values. Graft function is positively correlated with systolic blood pressure and BIA parameters. Therefore, hypertensive RT recipients should be closely followed with the use of BIA for an early diagnosis of loss of graft function.
High Grade Proteinuria as a Cardiovascular Risk Factor in Renal Transplant Recipients
(2015) Guliyev, O.; Sayin, B.; Uyar, M. E.; Genctoy, A.; Sezer, S.; Bal, Z.; Demirci, B. G.; Haberal, M.; 0000-0001-8287-6572; 0000-0002-3462-7632; 0000-0002-5145-2280; 26036546; J-3707-2015; AAJ-8097-2021; AAZ-5795-2021; IAO-2608-2023; AAJ-5551-2021
Background. Proteinuria is a marker of graft damage and is closely associated with a higher risk of morbidity, mortality, and cardiovascular disease in kidney transplant recipients (KTRs). Arterial stiffness is a well-known predictor of vascular calcification and systemic arteriosclerosis. In our study, we aimed to investigate. the association between proteinuria and graft/patient survival and to determine whether proteinuria may be a predictor for cardiovascular disease in our KTR population. Methods. Ninety KTRs (31 women; age, 38.7 +/- 11 years, with 45.9 +/- 9.6 months post-transplantation period) with normal graft functions in the 3 to 5 years of the post-transplantation period were enrolled. All patients were evaluated for their standard clinical (age, sex, and duration of hemodialysis) parameters. High-grade proteinuria was defined as proteinuria >500 mg/day in the 24-hour urine collection. All patients were evaluated by means of pulse-wave velocity (PWV) measurement at the initiation of the study. Results. Patients were divided into 2 groups: group 1 (high-grade proteinuria) patients with >= 500 mg/24 hours (n = 30) and group 2 (low-grade proteinuria) patients with <500 mg/24 hours (n = 60). High-grade proteinuria was correlated with higher PWV measurements and lower estimated glomerular filtration levels. Proteinuria appears to precede the elevation of serum creatinine and thus may be a useful marker of renal injury and may also be a contributing factor on deterioration of the graft. Conclusions. High-grade (>500 mg/day) proteinuria in KTRs is strongly associated with poor graft survival and increased risk of cardiovascular events. In our study, we proved the significant difference between high-grade and low-grade proteinuric patients, and we suggest 500 mg/day as the threshold of proteinuria in KTR population.
Hyperuricemia as a Cardiovascular Risk Factor in Renal Transplant Recipients
(2014) Uyar, M. Erkmen; Sezer, S.; Bal, Z.; Guliyev, O.; Colak, T.; Demirci, B. Gurlek; Haberal, M.; https://orcid.org/0000-0002-8372-7840; https://orcid.org/0000-0002-3462-7632; AAZ-5795-2021; AAJ-8554-2021; AAJ-8097-2021
Hyperviscosity in Renal Transplant Recipients
(2015) Tutal, E.; Uyar, M. Erkmen; Uyanik, S.; Bal, Z.; Guliyev, O.; Toprak, S. K.; Ilhan, O.; Sezer, S.; Haberal, M.; 0000-0002-3462-7632; 0000-0001-7717-5827; 26036545; AAJ-8097-2021; H-9131-2012; IAO-2608-2023; AAZ-5795-2021; ABC-8182-2021
Objective. The resistance of blood to flow is called plasma viscosity. Increased blood viscosity has been described in patients with coronary and peripheral arterial disease. In this study, we evaluated the influence of clinical and laboratory findings on plasma viscosity in renal transplant recipients. Methods. Eighty-one kidney transplant recipients (37.8 +/- 11.3 years old, 50.38 +/- 16.8 months post-transplantation period, 27 female) with normal graft functions were enrolled. The biochemical and clinical parameters in the 1st year after transplantation were retrospectively recorded, and graft function was evaluated by means of the yearly decline in eGFR. Plasma viscosity was measured and searched for the association with cross-sectionally analyzed cardiovascular parameters including body composition analyses, ambulatory blood pressure monitoring (ABPM) data, and pulse-wave velocity. Results. Patients were divided into 2 groups according to the median value of serum viscosity. Patients with high viscosity had higher serum low-density lipoprotein (P = .042) and C-reactive protein (P = .046) levels than lower viscosity group. In ABPM, daytime (P = .047) and office systolic (P = .046) blood pressure levels and left ventricular mass index (LVMI; P = .012) were significantly higher in patients with hyperviscosity. Patients with high viscosity had higher hip circumference (P = .038) and fat mass (P = .048). Estimated glomerular filtration rate decline was significantly higher in high-viscosity patients than in patients with low viscosity levels (12.9% vs 17.2%; P = .001) at 2 years' follow-up. Conclusions. We suggest that the hyperviscous state of the renal transplant recipients may arise from the inflammatory state, hypertension, and increased fat mass and increased LVMI. Hyperviscosity is also closely related to renal allograft dysfunction.
Hyperviscosity in Renal Transplantation Recipients
(2014) Tutal, E.; Uyar, M. Erkmen; Uyanik, S.; Bal, Z.; Guliyev, O.; Toprak, S.; Ilhan, O.; Sezer, S.; Haberal, M.; https://orcid.org/0000-0001-7717-5827; https://orcid.org/0000-0002-7326-8388; https://orcid.org/0000-0002-3462-7632; AAZ-5795-2021; H-9131-2012; JYQ-2550-2024; AAJ-8097-2021
Non-Dipping Hypertension in Renal Transplant Recipients
(2014) Sezer, S.; Uyar, M. Erkmen; Bal, Z.; Guliyev, O.; Sayin, B.; Colak, T.; Haberal, M.; https://orcid.org/0000-0001-8287-6572; https://orcid.org/0000-0002-8372-7840; https://orcid.org/0000-0002-3462-7632; AAZ-5795-2021; J-3707-2015; AAJ-8554-2021; AAJ-8097-2021
Pulmonary Hypertension Is Closely Related to Arterial Stiffness in Renal Transplant Patients
(2015) Bal, Z.; Sezer, S.; Uyar, M. E.; Bal, U.; Kulah, E.; Guliyev, O.; Tutal, E.; Haberal, M.; 0000-0002-3462-7632; 0000-0002-9446-2518; 0000-0001-6041-4254; 26036550; AAJ-8097-2021; IAO-2608-2023; AAK-4322-2021; AAZ-5795-2021; AAJ-5764-2021
Introduction and Aims. Pulmonary hypertension (PH) is an independent predictor of increased mortality in patients on dialysis and those undergoing renal transplantation. We investigated PH and its association with vascular calcification and endothelial dysfunction in renal transplant patients. Methods. The records of 300 consecutive patients who underwent renal transplant in our center between 2005 to 2012 were evaluated. PH was defined as systolic pulmonary artery pressure (sPAP) >= 35 mm Hg. Demographic information, clinical characteristics, pulse wave velocity (PWv), and renal recessive indices (RRI) were collected and compared among patients with and without PH. Results. Eight patients in PH group (age 36 [19] years) and 87 subjects in nPH group (age 35 [9] years) were evaluated. Demographic and clinical characteristics and laboratory data of the 2 groups were similar. Additionally, sPAP was positively correlated with PWv (r = 0.263, P = .01). In multivariate analyses, RRI (P = .004), serum CRP (P = .025), and PWv (P = .001) were associated with pulmonary artery pressure. Conclusion. PH is significantly associated with arterial stiffness in renal transplant recipients who have a high risk for cardiovascular disease. Considering the common prevalence of cardiovascular diseases, including PH, we suggested that all patients with renal transplantation should be evaluated for regular echocardiographic examination in clinical practice.
Pulmonary Hypertension Is Closely Related With Arterial Stiffness in Patients With Renal Transplantation
(2014) Bal, Z.; Sezer, S.; Uyar, M. Erkmen; Bal, U.; Guliyev, O.; Demirci, B. Gurlek; Tutal, E.; Haberal, M.; https://orcid.org/0000-0002-9446-2518; https://orcid.org/0000-0002-3462-7632; AAZ-5795-2021; AAK-4322-2021; AAJ-8097-2021
Sagittal Abdominal Diameter as an Anthropometric Measure of Cardiovascular and Graft Loss Risk in Renal Transplant Recipients
(2015) Bal, Z.; Uyar, M. E.; Tutal, E.; Guliyev, O.; Colak, T.; Sezer, S.; Haberal, M.; 0000-0002-3462-7632; 0000-0002-8372-7840; 26036544; IAO-2608-2023; AAJ-8097-2021; AAZ-5795-2021; AAJ-8554-2021
Background. Sagittal abdominal diameter (SAD) has been presented as a stronger prognostic factor for all-cause and cardiovascular mortality in the general population. The aim of this study was to evaluate the relationship between SAD and its associated parameters in renal transplant recipients. Methods. One hundred eighty-one renal transplant recipients were enrolled in the study. All patients were evaluated according to standard clinical and biochemical parameters. Anthropometric measurements were performed for all patients. Pulse-wave velocity (PWV) was determined from pressure tracing over carotid and femoral arteries with the use of the Sphygmocor system. Results. Patients were divided into 2 groups according to SAD measurements. Group 1 (n = 127) was defined as SAD <24.3 cm, and group 2 (n = 54) was defined as SAD > 24.3 cm. Patients in group 2 had significantly higher triglycerides, C-reactive protein (CRP), uric acid, systolic blood pressure, PWV, and body mass index measurements compared with group 1 (P < .05 for all). In group 2, estimated glomerular filtration rate (eGFR) was significantly lower than group 1 (P = .022). SAD had positive correlation with PWV, systolic and diastolic blood pressure, body mass index, triglycerides, fasting glucose, CRP, and uric acid (P < .05 for all). On stepwise linear regression analyses, proteinuria (P = .005), SAD (P = .001), and CRP (P = .015) independently predicted the degree of percentage change of eGFR. Conclusions. Considering the significant association of visceral fat with inflammation and cardiovascular disease, estimating visceral fat by means of SAD could be a useful tool to stratify cardiovascular risk as well as graft function in renal transplant recipients.
Sagittal Abdominal Diameter as the Anthropometric Measure of Cardiovascular and Graft Loss Risk in Renal Transplant Recipients.
(2014) Bal, Z.; Uyar, M. Erkmen; Guliyev, O.; Sayin, B.; Colak, T.; Sezer, S.; Haberal, M.; https://orcid.org/0000-0001-8287-6572; https://orcid.org/0000-0002-8372-7840; https://orcid.org/0000-0002-7326-8388; https://orcid.org/0000-0002-3462-7632; AAZ-5795-2021; J-3707-2015; AAJ-8554-2021; JYQ-2550-2024; AAJ-8097-2021