Publications by authors named "Hakki Cetinkaya"

Article Synopsis
  • The study investigates the prognostic factors for C3 glomerulopathy (C3G), focusing on the total chronicity score (TCS) derived from a new histological index (C3G-HI).
  • 74 patients from 20 medical centers were analyzed to determine factors affecting kidney health outcomes, with a particular emphasis on hemoglobin levels and their correlation with patient survival and kidney function.
  • Results indicated that low hemoglobin levels were linked to worse outcomes in C3G patients, and a TCS of 4 or higher correlated with significantly lower kidney survival rates over three years.
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Background: Immunoglobulin A (IgA) nephropathy (IgAN) treatment consists of maximal supportive care and, for high-risk individuals, immunosuppressive treatment (IST). There are conflicting results regarding IST. Therefore, we aimed to investigate IST results among IgAN patients in Turkiye.

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Article Synopsis
  • The study looks at primary FSGS (pFSGS) in Turkey and compares it to trends in other countries, noting that pFSGS cases are rising in the USA but not in Europe or Asia.
  • Researchers used data from Turkish patients with confirmed pFSGS, finding that many are men around 40 years old, with most experiencing nephrotic syndrome as the main symptom.
  • Key findings show that many patients have specific kidney issues, with differences between males and females in blood pressure and kidney function, while overall cases of pFSGS remain stable in Turkey.
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Background: Immunoglobulin A nephropathy (IgAN) is a common primary glomerulonephropathy. There is evidence that mesangial C3 deposition plays a role in the development of the disease. The aim of this study was to examine the effect of C3 deposition on the prognosis of IgAN patients.

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Purpose: The increasing frequency of coexistence of focal segmental glomerulosclerosis (FSGS) and obesity-associated glomerulopathy and the relationship between metabolic syndrome components and chronic kidney disease have been demonstrated in studies. Based on this information, in this study, we aimed to compare FSGS and other primary glomerulonephritis diagnoses in terms of parameters of metabolic syndrome and hepatic steatosis.

Materials And Methods: In our study, the data of 44 patients who were diagnosed FSGS through kidney biopsy and 38 patients with any other primary glomerulonephritis diagnoses in our nephrology clinic were retrospectively analyzed.

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Purpose: In our study, diagnostic and demographic characteristics of patients diagnosed with minimal change disease (MCD) by biopsy, clinical and laboratory findings in our country were investigated.

Methods: Data were obtained from the Turkish Society of Nephrology Glomerular Diseases (TSN-GOLD) Working Group database. Demographic characteristics, indications for biopsy, diagnosis of the glomerular diseases, comorbidities, laboratory and biopsy findings of all patients were recorded.

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Article Synopsis
  • Hospital-acquired acute kidney injury (HA-AKI) is common in Covid-19 patients, with significantly higher mortality rates observed among chronic kidney disease (CKD) patients compared to those without CKD.
  • In a study of 621 hospitalized Covid-19 patients, 32.5% developed HA-AKI, with rates being 48.0% in CKD patients versus 17.6% in non-CKD patients.
  • The highest mortality rate (41.1%) was found in CKD patients with HA-AKI, indicating that both HA-AKI and CKD worsen outcomes for patients hospitalized due to Covid-19.
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Sarcoidosis is a multisystemic granulomatous disease of unknown etiology. Renal involvement in sarcoidosis patients is occurred, but the incidence and prevalence is uncertain. The most common renal involvement of systemic sarcoidosis is nephrocalcinosis and interstitial nephritis.

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Purpose: The recent outbreak of COVID-19 rapidly spread worldwide. Comorbid diseases are determinants of the severity of COVID-19 infection and mortality. The aim of this study was to explore the potential association between chronic kidney disease (CKD) and the severity of COVID-19 infection.

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In this work, 2'-alkoxymethyl substituted klavuzon derivatives were prepared starting from 2-methyl-1-naphthoic acid in eight steps. Anticancer potencies of the synthesized compounds were evaluated by performing MTT cell viability test over cancerous and healthy pancreatic cell lines, along with CRM1 inhibitory properties in HeLa cells by immunostaining and Topo I inhibition properties by supercoiled DNA relaxation assay. Their cytotoxic activities were also presented in hepatocellular carcinoma cells (HuH-7) derived 3D spheroids.

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Background: Neutrophil gelatinase-associated lipocalin (NGAL) is a member of the lipocalin family best known as a novel and early marker of acute kidney injury (AKI). Recent data suggest that NGQueryAL is not only a marker of AKI, but also an important player in the vascular remodeling, atherosclerotic plaque stability and thrombus formation. We conducted this study to investigate the association of serum NGAL levels with fatal and composite (fatal and non-fatal) cardiovascular events (CVE) in a cohort of patients with stage 1-5 CKD.

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Background: Cardiovascular disease (CVD) risk is substantially increased in subjects with chronic kidney disease (CKD). The Triglycerides (TG) to High-Density Lipoprotein Cholesterol (HDL-C) ratio is an indirect measure of insulin resistance and an independent predictor of cardiovascular risk. No study to date has been performed to evaluate whether the TG/HDL-C ratio predicts CVD risk in patients with CKD.

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Background And Objectives: The role of reversibility of nontraditional risk factors, like inflammation and CKD-mineral bone disorder, in the reduction of cardiovascular risk after renal transplantation is still scarcely defined.

Design, Setting, Participants, And Measurements: The longitudinal relationship between C-reactive protein, CKD-mineral bone disorder biomarkers, and intima media thickness was investigated in a series of 178 patients (age=32±10 years) with stage 5 CKD maintained on chronic dialysis who underwent echo-color Doppler studies of the carotid arteries before and after renal transplantation. Smokers and patients with diabetes were excluded from the study.

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Background/aims: Ramipril attenuates renal Fibroblast growth factor-23 (FGF-23) expression, ameliorates proteinuria and normalizes serum phosphate in the diabetic Zucker rat with progressive renal disease suggesting that the renoprotective effect by this drug may be in part due to a FGF-23-lowering effect of angiotensin-converting enzyme (ACE) inhibition.

Methods: In this nonrandomized study, we tested whether ACE-inhibition reduces circulating FGF-23 in type-2 diabetics with stage-1 chronic kidney disease (CKD) and proteinuria. Intact FGF-23, the eGFR, proteinuria and the endothelium-dependent flow-mediated (FMD) response to ischemia and other parameters were measured at baseline and after 12-weeks of treatment with ramipril (n = 68) or amlodipine (n = 32).

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Objective: To determine the relationships between inflammatory mediators, mitral annular calcification (MAC), and osteocalcin in patients with chronic kidney disease (CKD).

Materials And Methods: Echocardiographic data for 60 patients diagnosed as CKD were retrospectively evaluated. The patients were divided into 2 groups; patients with MAC (MAC+ group) and patients without MAC (MAC- group).

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Background: The chronic kidney disease (CKD)-mineral and bone disorder (MBD) syndrome is an important contributor to the CKD-associated cardiovascular disease and high mortality rates. Sclerostin, a protein synthesized in osteocytes, is a potent downregulator of bone metabolism and a novel candidate for the bone-vascular axis in CKD patients. We tested whether serum sclerostin values are predictive for all-cause mortality and cardiovascular events (CVEs) in a CKD population.

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Plasma endocan levels are elevated in a large number of diseases, and may reflect endothelial cell dysfunction. There are currently no data on endocan in patients with chronic kidney disease (CKD). Therefore, we measured plasma endocan in 251 patients with CKD (stage 1-5) and 60 control individuals.

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Objectives: Secondary amyloidosis is the most important complication of FMF and endothelial function is more severely impaired. Elevated asymmetric dimethyl arginine (ADMA) may mediate the excess cardiovascular disease (CVD) risk of this group. We aimed to compare endothelial function characteristics, including ADMA, in patients with FMF-related amyloidosis and primary glomerulopathies and to define risk factors for a CVD event.

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Background And Aim: Previous studies showed that renal dysfunction was associated with both a reduction in serum high-density lipoprotein (HDL) cholesterol concentration and increased circulating monocyte count. We aimed to investigate the effect of circulating monocyte to serum HDL cholesterol ratio (M/H ratio) on fatal and composite cardiovascular events, in an observational cohort study of chronic kidney disease (CKD) patients.

Materials And Methods: A total of 340 subjects with stage 1-5 CKD were followed for a mean follow-up period of 33 (range 2-44) months and assessed for fatal and nonfatal CV events.

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Background: Soluble TWEAK (sTWEAK) and asymmetric dimethyl arginine (ADMA) concentrations have been associated with endothelial function in patients with chronic kidney disease (CKD). We tested the hypothesis that the improvement in endothelial function observed after renal transplantation is directly linked to the normalization of both sTWEAK and ADMA.

Materials And Methods: One hundred and seventy-five kidney transplant recipients (71% men; 31·6 ± 9·4 years) were studied immediately before and on the 180th day post-transplantation.

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Background: Red cell distribution width (RDW) is a measure of erythrocyte size variability and has been shown as an independent predictor of mortality. The aim of this article was to evaluate the association of RDW with endothelial dysfunction in patients with chronic kidney disease (CKD).

Methods: Patients with 1 to 5 stages of CKD were included in the study.

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Background/aims: The role of chronic kidney disease-mineral bone disorder (CKD-MBD) reversibility in the amelioration of vascular function and in the reduction of the risk for cardiovascular events after renal transplantation is still unknown.

Methods: We investigated the longitudinal relationship between the main biomarkers of CKD-MBD and the evolution of vascular function [flow-mediated dilatation (FMD)] after transplantation in a series of 161 patients with kidney failure maintained on chronic dialysis (5D-CKD).

Results: Before transplantation, FMD in patients was markedly lower (-40%, p < 0.

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The cachexia occurs frequently in lung cancer patients. Among appetite regulatory peptides, alteration of expressions of leptin and ghrelin is demonstrated in cachectic cancer patients, but nesfatin-1 has not been yet studied in cancer. We investigated serum nesfatin-1 level in advanced lung cancer patients.

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Background: Magnesium is an essential ion for all living cells because over 300 enzymes require the presence of magnesium for their catalytic action. To date, no group has evaluated magnesium as a cardiovascular risk factor in chronic kidney disease (CKD) subjects, in which closely interrelated factors and potential confounders such as endothelial dysfunction, insulin resistance (the homeostasis model assessment (HOMA) index) and inflammation (expressed as serum C-reactive protein (CRP) levels) were also considered.

Methods: Between March 2006 and December 2010, 283 CKD patients were followed up for time-to-event analysis until the occurrence of fatal or nonfatal cardiovascular events.

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