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    Wyświetlanie 1-4 z 4
    Tytuł:
    Association between intestinal and antioxidant barriers in children with cancer
    Autorzy:
    Stachowicz-Stencel, Teresa
    Synakiewicz, Anna
    Owczarzak, Anna
    Sliwinska, Aleksandra
    Lysiak-Szydlowska, Wieslawa
    Balcerska, Anna
    Powiązania:
    https://bibliotekanauki.pl/articles/1039739.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    childhood cancer
    intestinal permeability
    oxidative stress
    Opis:
    Objective: Reactive oxygen species (ROS) play a role in cancerogenesis processing and damage tissues. Furthermore, oncological treatment may impair proper function of the gut barrier. The aim of this study was to measure intestinal permeability in children in clinical remission for solid tumours and to search for a possible relationship between free radicals and the intestinal barrier. No such investigation in children has been reported so far. Research Methods and Procedures: The prospective study consisted of 19 paediatric patients with cancer after completion of chemotherapy. 32 healthy children from the outpatients clinics were recruited for measurement of intestinal permeability and antioxidant barrier as a control group. Intestinal permeability was assessed by measurement of urinary lactulose and mannitol after oral challenge. Antioxidant enzymes: superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) in erythrocytes were assessed. Ischemia modified albumin (IMA) concentration was measured in serum. Results: Cancer patients excreted less mannitol and more lactulose versus controls. The ratio of lactulose to mannitol was significantly higher in oncological children vs control (mean 0.188 and 0.0453, respectively, p=0.0006,). Significantly higher IMA level in the oncological group vs control was noted (mean 123.8 and 87.3 U/ml, respectively, p=0.0037). No correlation between intestinal permeability and oxidative stress barrier was found. Conclusions: Our data shows that intestinal barrier is damaged in paediatric cancer patients after chemotherapy. IMA is believed to play a protective role in the defence against tissue damage. No correlation was found between these two barriers.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 2; 237-242
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of megestrol acetate on nutrition and inflammation in dialysis patients - preliminary results
    Autorzy:
    Gołębiewska, Justyna
    Lichodziejewska-Niemierko, Monika
    Aleksandrowicz, Ewa
    Majkowicz, Mikołaj
    Łysiak-Szydłowska, Wiesława
    Rutkowski, Bolesław
    Powiązania:
    https://bibliotekanauki.pl/articles/1040501.pdf
    Data publikacji:
    2009
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    malnutrition
    megestrol acetate
    proinflammatory cytokines
    Opis:
    Malnutrition is a common clinical problem in dialysis patients. So far the management of malnutrition in this population has not been fully successful. The aim of the study was to evaluate the efficacy and safety of use of megestrol acetate suspension in malnourished dialysis patients. Twenty-six hypoalbuminemic (albumin ≤ 3.8 g/dl) dialysis patients took 160 mg of megestrol acetate daily for a period of two months. Anthropometry (dry weight, body mass index) and biochemical measurements of nutrition (serum albumin, triglycerides, total cholesterol) and inflammation (hsCRP, IL-1β, IL-6) were performed on a monthly basis. The treatment led to a statistically significant increase (P < 0.05) in anthropometry and albumin concentration, with no statistically significant changes in total cholesterol, triglycerides and indices of inflammation. Side effects included overhydration, diarrhoea and hyperglycaemia. Thus, megestrol acetate may be an effective therapeutic agent in improving the nutritional status of carefully selected dialysis patients, while it might not mitigate inflammation. Because of the prevalent side effects it must be monitored closely.
    Źródło:
    Acta Biochimica Polonica; 2009, 56, 4; 733-737
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Atorvastatin improves tubular status in non-diabetic patients with chronic kidney disease - placebo controlled, randomized, cross-over study
    Autorzy:
    Renke, Marcin
    Tylicki, Leszek
    Rutkowski, Przemysław
    Neuwelt, Alexander
    Larczyński, Wojciech
    Ziętkiewicz, Marcin
    Aleksandrowicz, Ewa
    Łysiak-Szydłowska, Wiesława
    Rutkowski, Bolesław
    Powiązania:
    https://bibliotekanauki.pl/articles/1040322.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    proteinuria
    kidney
    tubular injury
    chronic kidney disease
    Atorvastatin
    Opis:
    Background. There is evidence that dyslipidemia is associated with chronic kidney disease (CKD) and it has been implicated in the progression of renal damage. Optimal management of dyslipidemia should therefore lead to renal benefits. A number of experimental models demonstrate a beneficial effect of statins in ameliorating renal damage. However, the exact mechanism by which statins protect against renal damage remains unclear. Methods. In a placebo-controlled, randomized, cross-over study we evaluated the influence of atorvastatin (ATO) 40 mg/day added to the renin-angiotensin-aldosterone systeme (RAAS) blockade on proteinuria and surrogate biomarkers of tubular damage or injury in 14 non-diabetic patients with proteinuria (0.4-1.8 g per 24 h) with normal or declined kidney function (eGFR 55-153 ml/min). In the eight-week run-in period, therapy using angiotensin converting enzyme inhibitors (ACEI) and/or angiotensin II subtype 1 receptor antagonists (ARB) was adjusted to achieve a blood pressure below 130/80 mm Hg. Next, patients were randomly assigned to one of two treatment sequences: ATO/washout/placebo or placebo/washout/ATO. Clinical evaluation and laboratory tests were performed at the randomization point and after each period of the study. The primary end point of this study was a change in proteinuria measured as 24-h urine protein excretion (DPE). Secondary end points included urine N-acetyl-β-d-glucosaminidase (NAG) and α1-microglobulin (α1m) excretion. Results. The ATO therapy significantly reduced urine excretion of α1m (p=0.033) and NAG (p=0.038) as compared to placebo. There were no differences in proteinuria, blood pressure, eGFR and serum creatinine between the ATO and placebo groups. Conclusion. Atorvastatin treatment is safe and improves biomarkers of tubular damage or injury in non-diabetic patients with CKD.
    Źródło:
    Acta Biochimica Polonica; 2010, 57, 4; 547-552
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of pentoxifylline on proteinuria, markers of tubular injury and oxidative stress in non-diabetic patients with chronic kidney disease - placebo controlled, randomized, cross-over study
    Autorzy:
    Renke, Marcin
    Tylicki, Leszek
    Rutkowski, Przemysław
    Knap, Narcyz
    Ziętkiewicz, Marcin
    Neuwelt, Alexander
    Aleksandrowicz, Ewa
    Łysiak-Szydłowska, Wiesława
    Woźniak, Michał
    Rutkowski, Bolesław
    Powiązania:
    https://bibliotekanauki.pl/articles/1040438.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    pentoxifylline
    oxidative stress
    kidney
    chronic kidney disease
    proteinuria
    tubular injury
    Opis:
    Background: Inhibition of the renin-angiotensin-aldosterone system (RAAS) with angiotensin converting enzyme inhibitors (ACEI) and/or angiotensin II subtype 1 receptor antagonists (ARB) is a common strategy used in the management of patients with chronic kidney disease (CKD). However, there is no universal therapy that can stop progression of CKD. Pentoxifylline (PTE) is a non-specific phosphodiesterase inhibitor with anti-inflammatory properties. It has been reported to have promising effects in CKD treatment. Methods: In a placebo-controlled, randomized, cross-over study we evaluated the influence of PTE (1200 mg/day) added to RAAS blockade on proteinuria, surrogate markers of tubular injury and oxidative stress-dependent products in 22 non-diabetic patients with proteinuria (0.4-4.3 g per 24h) with normal or declined kidney function [eGFR 37-178 mL/min]. In an eight-week run-in period, therapy using ACEI and/or ARB was adjusted to achieve a blood pressure below 130/80 mm Hg. Next, patients were randomly assigned to one of two treatment sequences: PTE/washout/placebo or placebo/washout/PTE. Clinical evaluation and laboratory tests were performed at the randomization point and after each period of the study. Results: The PTE therapy reduced proteinuria (by 26%) as compared to placebo. There were no differences in α1-microglobulin, urine excretion of N-acetyl-β-d-glucosaminidase (NAG), hsCRP, the urinary excretion of 15-F2t-isoprostane, blood pressure (BP), eGFR and serum creatinine between the PTE and placebo groups. Conclusion: Pentoxifylline may decrease proteinuria in non-diabetic patients with CKD.
    Źródło:
    Acta Biochimica Polonica; 2010, 57, 1; 119-123
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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