Publications by authors named "Karpati I"

Background: Chronic kidney disease (CKD) poses a significant public health challenge globally while impacting patients' physical function and quality of life. Addressing the issues of physical inactivity and pain management is essential during treatment to improve health-related quality of life. The present study investigated the effect of an aerobic training program with core stabilization exercises for hemodialysis (HD) patients on a transplant waiting list and renal transplant (RTx) patients.

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Background: Patients with end-stage kidney disease (ESKD) receiving peritoneal dialysis (PD) or haemodyalisis (PD) appear to be less physically active than healthy persons, a situation that could lead to reductions in quality of life. The aim of the present study was to assess and compare physical activity and health-related quality of life in renal patients on HD and PD programs.

Methods: In May 2020, 130 patients (106 HD and 24 PD) were enrolled in a study of chronic dialysis programs.

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Recognition of chronic kidney disease (CKD) is crucial in type 2 diabetes mellitus (T2DM). We conducted a nationwide epidemiological study to evaluate T2DM-associated CKD in Hungary between 2016 and 2020. Annual incidence and prevalence rates of registered CKD amongst all pharmacologically treated T2DM patients were analyzed in different age-groups by the central database of the Hungarian Health Insurance Fund Management.

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Background/aims: Human paraoxonase-1 (PON1) is responsible for the antioxidant effect of high-density lipoprotein (HDL) by inhibiting low-density lipoprotein oxidation. Previous studies discovered dyslipidemia (DL) and decreased PON1 activity in chronic renal failure (CRF). We aimed to determine PON and arylesterase activity, phenotypic distribution of the PON1 enzyme, and lipid profile in low and normal HDL cholesterol (HDL-C) patients with CRF, and renal transplant (TX), compared to primary DL.

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Background: Human serum paraoxonase-1 (PON1) is a high-density lipoprotein-associated ester hydrolase which can inhibit low-density lipoprotein oxidation and has an antiatherogenic effect. Two common polymorphisms are known in the PON1 gene in humans (at positions 55 and 192), from which the latter gene alteration has been mainly attributed to alter the activity of the protein. Moreover, significantly reduced PON1 activity was found in chronic kidney disease (CKD) and renal transplant patients.

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Background: Human paraoxonase-1 (PON1) inhibits LDL-oxidation and atherogenesis, and possesses lactonase activity. Decreased PON1 activity was found in hemodialyzed and renal transplanted patients. Cystatin C plays a protective role in atherosclerosis, and is a new, sensitive marker of renal function.

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Severe hyperhomocysteinemia (HHC) is associated with atherosclerosis. In hemodialysis (HD) patients, one of the main causes of death is cardiovascular disease. In animals, trace elements such as cobalt, copper, iron, and nickel ameliorated vitamin B(12) deficiency-induced HHC.

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Nowadays chronic kidney disease has become a major public health problem due to the great increase in atherogenic nephropathies. In the absence of classic renal symptoms, chronic kidney disease is mostly diagnosed when renal failure is already advanced, although it can be revealed by laboratory tests in the earlier stages. When diagnosis is late, the progression to end-stage renal failure is unavoidable and renal replacement therapy is needed.

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Tocopherol vitamers [e.g., alpha-, gamma- and delta-tocopherol (alpha-TOC, gamma-TOC and delta-TOC, respectively)] and their water-soluble 2,2'-carboxyethyl hydroxychroman metabolites (e.

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Background: Exogenous leptin markedly decreased plasma paraoxonase (PON1) activity in rats. Hyperleptinemia and decreased PON1 activity have previously been demonstrated in uremia. Therefore, we investigated the relationship between leptin level and PON1 activity in hemodialysis (HD) patients.

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Background: Analysing a 12-lead surface electrocardiogram (ECG), the inter-lead variability of the P wave interval, i.e. P wave dispersion, is defined as the difference between the maximum and the minimum P wave duration.

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Background: It is known that hyperhomocystinemia is an independent risk factor for development of atherosclerosis. In end stage renal disease the frequency of hyperhomocystinemia is much greater than in normal populations.

Aim: In this study homocystein (Hcy), folic acid and vitamin B12 concentrations were determined in 125 chronic renal failure patients being on folic acid supplementation (3 mg/day).

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Angiotensin II (AII) in 1-10 nM concentrations has an in vivo immunostimulating effect on human neutrophils. The release of superoxide anions and leukotrienes (LTs) is significantly increased by 10 nM AII-stimulated neutrophils of patients with hypercholesterolaemia (HCH). These oxidizing agents may be involved in the damage of vessel walls, i.

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Background: Cytosolic free calcium ([Ca(2+)](i)) is an important second messenger during stimulation in a wide variety of cells, including polymorphonuclear leukocytes (PMNs). Its mobilization in PMNs is altered in various diseases such as atherosclerosis and ageing. In chronic haemodialysis (HD) patients, both atherosclerosis and accelerated ageing are well known.

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Background: The most frequent complication in patients with end-stage renal failure on chronic haemodialysis (HD) treatment is atherosclerosis, i.e. the different forms of heart and vascular diseases.

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Serum paraoxonase (PON) is a high-density lipoprotein (HDL)-associated hydrolase, which inhibits low-density lipoprotein oxidation. Uremic and kidney-transplanted patients have an increased risk of atherosclerosis, to which an increased lipoprotein oxidation may contribute. The aim of our study was to determine whether the PON activity or phenotype is altered in uremic and kidney-transplanted patients, and to compare the values with those of healthy controls.

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Human serum paraoxonase is physically associated with an apolipoprotein (Apo-A1) and clusterin-containing high-density lipoprotein (HDL) and prevents low-density lipoprotein from lipid peroxidation. The aim of our study was to determine whether paraoxonase activity or phenotype is altered in patients with chronic renal failure and in hyperlipidemic subjects without renal insufficiency and to compare the values with those of healthy controls. We investigated the serum paraoxonase activity and polymorphism in 119 hemodialyzed uremic patients, 107 patients with primary hyperlipoproteinemia, and in 110 healthy control subjects.

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The fatty acid composition in free fatty acid and phospholipid fraction of plasma in untreated mildly hyperlipidemic patients were determined. The general trend was an increase in saturation in both free and phospholipid fractions of plasma in patients compared with that of healthy controls. Furthermore, arachidonic acid, precursor of formation of prostaglandins and leukotrienes was detected in significantly lower amount in plasma of mildly and untreated hyperlipidemic patients.

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Recently a growing number of case reports has been published about successful pregnancy outcome of dialysed women on recombinant human erythropoietin therapy. During pregnancy the maternal demand for erythropoietin may undergo changes, with consideration of recombinant human erythropoietin therapy in the early stage of renal insufficiency, as is shown by our two reported cases. The use of recombinant human erythropoietin seems to be safe for the foetus: it does not cross the placental barrier, and therefore lacks any direct foetal effect.

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The unesterified fatty acid patterns in plasma of predialytic (PHD) and hemodialysis (HD) patients were determined. The HD patients were divided into three groups: (1) HD without cardiovascular disease (HD-norm); (2) HD with cardiomyopathy (HD-CAD), and (3) HD with hyperlipidemia (HD-hyp). The relative abundance of saturated fatty acids (SFAs) was greater in the plasma of HD-norm and HD-CAD patients (73.

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The authors report the case of a 38 year old man with horseshoe kidney who developed a severe nephroso-nephritis syndrome, caused by cryoglobulinemic membranoproliferative glomerulo-nephritis. A combination of steroid and cyclophosphamide treatment resulted in partial improvement, but was discontinued after 12 weeks due to adverse reactions, with a consequent early relapse. The 4 week course of cyclosporine monotherapy proved ineffective and signs of cryoglobulinemia appeared.

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