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    Wyświetlanie 1-4 z 4
    Tytuł:
    Lower levels of Caveolin-1 and higher levels of endothelial nitric oxide synthase are observed in abdominal aortic aneurysm patients treated with simvastatin
    Autorzy:
    Kowalska, Karolina
    Habrowska-Górczyńska, Dominika
    Neumayer, Christoph
    Bolliger, Michael
    Domenig, Christoph
    Piastowska-Ciesielska, Agnieszka
    Huk, Ihor
    Piechota-Polanczyk, Aleksandra
    Powiązania:
    https://bibliotekanauki.pl/articles/1038531.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    Cav-1
    eNOS
    abdominal aortic aneurysm
    simvastatin
    Opis:
    This study was undertaken to verify whether simvastatin modulates Cav-1/eNOS expression, and if this modulation is associated with changes in pro- and anti-inflammatory cytokine and Toll-like receptor 4 (TLR4) level in abdominal aortic aneurysm (AAA). It is a 1:2 case-control study of non-statin (n=12) and simvastatin-treated patients (n=24) who underwent open AAA repair. Simvastatin treatment decreased Cav-1 (p<0.05) and increased eNOS expression (p<0.01) in the AAA wall. These changes might be dose dependent. The changes in Cav-1 and eNOS were associated with a trend towards decreased IL-6 and IL-17 concentration (p>0.05) and increased IL-10 concentration (p=0.055); however, TLR4 expression was unaffected, suggesting that simvastatin influences Cav-1 and eNOS in the AAA wall by other mechanisms. Simvastatin may modulate Cav-1 and eNOS expression in the aneurysmal wall, indicating a potentially beneficial role for statins in AAA patients.
    Źródło:
    Acta Biochimica Polonica; 2018, 65, 1; 111-118
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Female headstart in resistance to hyperoxia-induced oxidative stress in mice
    Autorzy:
    Šarić, Ana
    Sobočanec, Sandra
    Šafranko, Željka
    Popović-Hadžija, Marijana
    Aralica, Gorana
    Korolija, Marina
    Kušić, Borka
    Balog, Tihomir
    Powiązania:
    https://bibliotekanauki.pl/articles/1039219.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    hyperoxia
    sex-related
    mice
    ROS
    Sirt1
    PPAR-γ
    eNOS
    Sod2
    Opis:
    Increased oxygen concentration (hyperoxia) induces oxidative damage of tissues and organs. Oxygen toxicity in hyperoxia is controlled by factors such as sex, age, tissue, strain and hormones. In most species females show lower incidence of some age-related pathologies linked with oxidative stress, which has been attributed to a beneficial effect of ovarian hormones. In this study we found that hyperoxia induced hepatic oxidative damage exclusively in male CBA/H mice, followed by their decreased survival. Histopathological examination revealed that the observed differences in survival were not the consequence of acute lung injury induced by hyperoxia. Next, we observed that an increased Sirt1 protein level in hyperoxia-exposed female CBA/H mice correlated with their lower PPAR-γ and higher eNOS and Sod2 protein levels. In males, higher PPAR-γ and lower Sod2 protein levels were associated with unchanged Sirt1 expression. Although these results are of a correlative nature only, they clearly show that females show better survival, increased resistance to hyperoxia and have generally more efficient defense systems, which suggests that their headstart in resistance to hyperoxia could be a consequence of the beneficial effect of ovarian hormones.
    Źródło:
    Acta Biochimica Polonica; 2014, 61, 4; 801-807
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Endothelial NADH/NADPH-dependent enzymatic sources of superoxide production: relationship to endothelial dysfunction.
    Autorzy:
    Kalinowski, Leszek
    Malinski, Tadeusz
    Powiązania:
    https://bibliotekanauki.pl/articles/1043282.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    peroxynitrite
    endothelial dysfunction
    NAD(P)H oxidase
    nitric oxide
    superoxide
    eNOS
    Opis:
    There is growing evidence that endothelial dysfunction, which is often defined as the decreased endothelial-derived nitric oxide (NO) bioavailability, is a crucial factor leading to vascular disease states such as hypertension, diabetes, atherosclerosis, heart failure and cigarette smoking. This is due to the fact that the lack of NO in endothelium-dependent vascular disorders contributes to impaired vascular relaxation, platelet aggregation, increased vascular smooth muscle proliferation, and enhanced leukocyte adhesion to the endothelium. During the last several years, it has become clear that reduction of NO bioavailability in the endothelium-impaired function disorders is associated with an increase in endothelial production of superoxide (O2̇̄). Because O2̇̄ rapidly scavenges NO within the endothelium, a reduction of bioactive NO might occur despite an increased NO generation. Among many enzymatic systems that are capable of producing O2̇̄, NAD(P)H oxidase and uncoupled endothelial NO synthase (eNOS) apparently are the main sources of O2̇̄ in the endothelial cells. It seems that O2̇̄ generated by NAD(P)H oxidase may trigger eNOS uncoupling and contribute to the endothelial balance between NO and O2̇̄. That is maintained at diverse levels.
    Źródło:
    Acta Biochimica Polonica; 2004, 51, 2; 459-469
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of elastin-derived peptides, glucose, LDL and oxLDL on nitric oxide synthase expression in human umbilical artery endothelial cells
    Autorzy:
    Garczorz, Wojciech
    Francuz, Tomasz
    Gmiński, Jan
    Likus, Wirginia
    Siemianowicz, Krzysztof
    Jurczak, Teresa
    Strzałka-Mrozik, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/1039891.pdf
    Data publikacji:
    2011
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    nitric oxide synthase
    oxidized LDL
    LDL
    EDP
    atherosclerosis
    hyperglycemia
    endothelium
    elastin-derived peptides
    eNOS
    Opis:
    Endothelial dysfunction plays an important role in the development of atherosclerosis. Elastin-derived peptides (EDP), hyperglycemia, hypercholesterolemia and oxidized LDL have a proven proatherosclerotic potential. Nitric oxide generated by endothelial nitric oxide synthase (eNOS; EC 1.14.13.39) is an important vasorelaxant. Here we studied the influence of those proatherosclerotic factors on eNOS gene and protein expression in artery-derived endothelial cells. Human umbilical artery endothelial cells (HUAEC) were incubated with or without: glucose (270 mg/dl), LDL (200 mg/dl), oxidized LDL (oxLDL 25 mg/dl) or κ-elastin (0.5 and 2.5 µg/ml). Gene expression was assessed by real time RT-PCR, whilst the eNOS protein by ELISA. In cells incubated with 2.5 µg/ml of κ-elastin, a 31 % increase of eNOS mRNA expression was observed, but the protein level remained unchanged. OxLDL, LDL and glucose decreased the eNOS protein level by 74 %, 37 % and 29 %, respectively. OxLDL decreased eNOS mRNA by 42 %. LDL non-significantly decreased eNOS mRNA expression. An elevated glucose level did not affect the eNOS mRNA expression. Hyperglycemia and an elevated level of LDL, particularly oxLDL, decreased the level of eNOS protein in endothelial cells. As κ-elastin did not decrease the expression of eNOS gene in HUAEC, the proatherogenic properties of elastin-derived peptides are unlikely to be due to their influence on eNOS.
    Źródło:
    Acta Biochimica Polonica; 2011, 58, 3; 375-379
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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