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    Tytuł:
    N-acetyl-beta-glucosaminidase urine activity as a marker of early proximal tubule damage and a predictor of the long-term function of the transplanted kidneys
    Autorzy:
    Kwiatkowska, Ewa
    Domański, Leszek
    Bober, Joanna
    Kłoda, Karolina
    Safranow, Krzysztof
    Szymańska-Pasternak, Jolanta
    Romanowski, Maciej
    Sulecka, Aneta
    Pawlik, Andrzej
    Ciechanowski, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1039287.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    allograft
    CAD
    DGF
    kidney function
    NAG
    Opis:
    Introduction: Ischaemia-reperfusion injury (IRI) is a factor leading to the damages of the transplanted kidney, what affects mainly the proximal tubules. Early monitoring of tubule damage can be an efficient tool to predict the allograft dysfunction. Present in proximal tubules, N-acetyl-beta-glucosaminidase (NAG) is a lysosomal enzyme whose excretion rises as a result of IRI or acute rejection. The aim of this study was to monitor the NAG urine activity to evaluate the early proximal tubule damage, and to try to predict the long-term function of the transplanted kidney. Material and methods: The study enrolled 87 Caucasian renal transplant recipients (61.7% males, 38.3% females, mean age 45.56±14.34 years). Urine samples were collected for NAG and creatinine analysis on the 1st day after transplantation, and then in the 3rd and 12th month. Protocol biopsies were performed in the 3rd and 12th month. Results: A significant positive correlation between NAG urine activity in the 3rd month after transplantation and creatinine concentration on the 14th (p=0.004) and 30th day (p=0.05), in the 3rd month (p=0.009) and after the 1st (p=0.005) and 2nd year (p=0.003) was observed. A statistically significantly higher urinary NAG activity in samples collected in the first 3 days and in the 3rd month after transplantation among patients with DGF (p=0.006 and p=0.03 respectively) was found. There was a significant positive correlation between NAG urine activity in the 3rd month and the grade of tubular atrophy in specimens collected in the 3rd (p=0.03) and 12th (p=0.04) month. Conclusions: Monitoring of NAG urine activity is useful in the evaluation of early proximal tubule damage and predicting the long-term function of the transplanted kidneys.
    Źródło:
    Acta Biochimica Polonica; 2014, 61, 2; 275-280
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adipokines and parameters of peritoneal membrane transport in newly started peritoneal dialysis patients
    Autorzy:
    Golembiewska, Edyta
    Safranow, Krzysztof
    Ciechanowski, Kazimierz
    Bober, Joanna
    Bogacka, Anna
    Stepniewska, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1039455.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    peritoneal dialysis
    serum adiponectin
    serum leptin
    solute transport
    Opis:
    Aim: Adiponectin and leptin are two adipokines playing important roles in the regulation of body weight, appetite, carbohydrate and lipid metabolism. In patients with chronic kidney disease (CKD) adipokines accumulate in serum due to reduced renal clearance. Since adipokines have pleiotropic actions, the adipokine balance may have an impact on peritoneal membrane transport. The aim of this study was to assess whether serum adiponectin and leptin levels were related to peritoneal transport and residual renal function (RRF) in newly started peritoneal dialysis patients. Methods: 25 clinically stable patients, 4 to 6 weeks after the onset of PD, were included in the study. For each patient clinical and laboratory data were reviewed and standard PET test was performed. Serum adiponectin and leptin concentrations were determined and leptin/adiponectin (L/A) ratio was calculated. Results: Serum adiponectin correlated negatively with weight, BMI and glucose concentration. Serum leptin and L/A ratio correlated positively with BMI. Serum adiponectin correlated positively with dialysate to plasma (D/P) creatinine ratio and ultrafiltration in PET test. Serum leptin level and L/A ratio correlated strongly negatively with peritoneal creatinine clearance. Conclusions: Serum adiponectin concentration is positively associated with baseline solute transport. Leptin concentration and L/A ratio are negatively associated with dialysis adequacy in newly started PD patients.
    Źródło:
    Acta Biochimica Polonica; 2013, 60, 4; 617-621
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Renal tubular acidosis - underrated problem?
    Autorzy:
    Golembiewska, Edyta
    Ciechanowski, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1039734.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    molecular pathophysiology
    kidney transplantation
    renal tubular acidosis
    gene mutations
    Opis:
    Renal tubular acidosis (RTA) is a hyperchloremic metabolic acidosis characterized by a normal anion gap and normal (or near normal) glomerular filtration rate in the absence of diarrhoea. Inherited isolated forms of renal tubular acidosis are not common. However, they can also be a part of a more generalized tubule defect, like in Fanconi syndrome. In recent years more and more gene mutations have been found which are associated with RTA (mutations in the gene SLC4A4, encoding a Na+-HCO3- cotransporter (NBC-1); in the gene SLC4A1, encoding Cl-/HCO3- exchanger (AE1); in the gene ATP6B1, encoding B1 subunit of H+-ATPase; in the gene CA2 encoding carbonic anhydrase II; and others) and allow better understanding of underlying processes of bicarbonate and H+ transport. Isolated renal tubular acidosis can be frequently acquired due to use of certain drug groups, autoimmune disease or kidney transplantation. As the prevalence of acquired forms of RTA is common, new therapeutic options for the currently used supplementation of oral alkali, are awaited.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 2; 213-217
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Serum soluble Klotho protein level is associated with residual diuresis in incident peritoneal dialysis patients
    Autorzy:
    Golembiewska, Edyta
    Safranow, Krzysztof
    Kabat-Koperska, Joanna
    Myślak, Marek
    Ciechanowski, Kazimierz
    Powiązania:
    https://bibliotekanauki.pl/articles/1039572.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    residual diuresis
    peritoneal dialysis
    soluble Klotho
    phosphate
    FGF-23
    Opis:
    Aim: Active vitamin D (1,25-dihydroxyvitamin D3), PTH, fibroblast growth factor-23 (FGF-23) and Klotho protein are key regulators of phosphate metabolism. Hyperphosphatemia and increased FGF-23 level in patients with end-stage renal disease are associated with increased morbidity and mortality. The relationships among key regulators of phosphate metabolism are still being investigated. FGF-23, the humoral factor involved in phosphate metabolism, is strongly associated with serum phosphorus level. Klotho, a transmembrane protein expressed primarily in renal tubules, functions as an obligatory co-receptor for FGF-23. The soluble form of Klotho, produced by the shedding of the transmembrane protein, is detectable in body fluids. The purpose of the study was to assess if serum soluble alpha-Klotho level was related to phosphate metabolism parameters and residual renal function (RRF) in incident peritoneal dialysis (PD) patients. Methods: Thirty-five clinically stable patients 4 to 6 weeks after the onset of PD were included in the study. For each patient, clinical and laboratory data were reviewed. Serum phosphorus concentration, urinary and peritoneal phosphate clearance, serum FGF-23 and soluble Klotho protein concentrations were determined. Results: Serum soluble alpha-Klotho was strongly negatively correlated with 24-hour diuresis (Rs = -0.55, p = 0.004) and renal phosphate clearance (Rs = -0.40, p = 0.049), but not with RRF. Conclusions: Serum soluble Klotho protein concentration is inversely related to residual diuresis and renal phosphate clearance in incident PD patients.
    Źródło:
    Acta Biochimica Polonica; 2013, 60, 2; 191-194
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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