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Wyszukujesz frazę "Siomek, Agnieszka" wg kryterium: Autor

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Oxidative damage to DNA and antioxidant status in aging and age-related diseases
    Autorzy:
    Olinski, Ryszard
    Siomek, Agnieszka
    Rozalski, Rafal
    Gackowski, Daniel
    Foksinski, Marek
    Guz, Jolanta
    Dziaman, Tomasz
    Szpila, Anna
    Tudek, Barbara
    Powiązania:
    https://bibliotekanauki.pl/articles/1041102.pdf
    Data publikacji:
    2007
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    ROS
    aging
    oxidative DNA damage
    age-related diseases
    BER
    GO system
    Opis:
    Aging is a complex process involving morphologic and biochemical changes in single cells and in the whole organism. One of the most popular explanations of how aging occurs at the molecular level is the oxidative stress hypothesis. Oxidative stress leads in many cases to an age-dependent increase in the cellular level of oxidatively modified macromolecules including DNA, and it is this increase which has been linked to various pathological conditions, such as aging, carcinogenesis, neurodegenerative and cardiovascular diseases. It is, however, possible that a number of short-comings associated with gaps in our knowledge may be responsible for the failure to produce definite results when applied to understanding the role of DNA damage in aging and age-related diseases.
    Źródło:
    Acta Biochimica Polonica; 2007, 54, 1; 11-26
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cu,Zn-superoxide dismutase deficiency in mice leads to organ-specific increase in oxidatively damaged DNA and NF-κB1 protein activity
    Autorzy:
    Siomek, Agnieszka
    Brzoska, Kamil
    Sochanowicz, Barbara
    Gackowski, Daniel
    Rozalski, Rafal
    Foksinski, Marek
    Zarakowska, Ewelina
    Szpila, Anna
    Guz, Jolanta
    Bartlomiejczyk, Teresa
    Kalinowski, Bartlomiej
    Kruszewski, Marcin
    Olinski, Ryszard
    Powiązania:
    https://bibliotekanauki.pl/articles/1042730.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    Cu,Zn-SOD deficiency
    NF-κB pathway
    oxidative stress
    Opis:
    Earlier experimental studies have demonstrated that: i) Cu,Zn-superoxide dismutase deficiency leads to oxidative stress and carcinogenesis; ii) dysregulation of NF-κB pathway can mediate a wide variety of diseases, including cancer. Therefore, we decided, for the first time, to examine the level of oxidative DNA damage and the DNA binding activity of NF-κB proteins in SOD1 knockout, heterozygous and wild-type mice. Two kinds of biomarkers of oxidatively damaged DNA: urinary excretion of 8-oxodG and 8-oxoGua, and the level of oxidatively damaged DNA were analysed using HPLC-GC-MS and HPLC-EC. The DNA binding activity of p50 and p65 proteins in a nuclear extracts was assessed using NF-κB p50/p65 EZ-TFA transcription factor assay. These parameters were determined in the brain, liver, kidney and urine of SOD1 knockout, heterozygous and wild-type mice. The level of 8-oxodG in DNA was higher in the liver and kidney of knockout mice than in wild type. No differences were found in urinary excretion of 8-oxoGua and 8-oxodG between wild type and the SOD1-deficient animals. The activity of the p50 protein was higher in the kidneys, but surprisingly not in the livers of SOD1-deficient mice, whereas p65 activity did not show any variability. Our results indicate that in Cu,Zn-SOD-deficient animals the level of oxidative DNA damage and NF-κB1 activity are elevated in certain organs only, which may provide some explanation for organ-specific ROS-induced carcinogenesis.
    Źródło:
    Acta Biochimica Polonica; 2010, 57, 4; 577-583
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    NF-κB signaling pathway and free radical impact
    Autorzy:
    Siomek, Agnieszka
    Powiązania:
    https://bibliotekanauki.pl/articles/1039704.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    nitrogen oxygen species
    NF-κB transcription factors
    reactive oxygen species
    Opis:
    The activation of NF-κB transcription factor is critical for a wide range of processes such as immunity, inflammation, cell development, growth and survival. It is activated by a variety of stimuli including cytokines, ionizing radiation and oxidative stress. Redox modulations of NF-κB pathway have been widely demonstrated. Studies carried out during last years have advanced our knowledge about possible connections between NF-κB pathway and the impact of free radicals. This review is an endeavor to gather recent results focused on this issue, although an important question, whether oxidative stress plays a physiological role in NF-κB activation, seems to be still unanswered.
    Źródło:
    Acta Biochimica Polonica; 2012, 59, 3; 323-331
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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