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Wyszukujesz frazę "Zadrag, Renata" wg kryterium: Autor

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Relationship between the replicative age and cell volume in Saccharomyces cerevisiae
    Autorzy:
    Zadrag, Renata
    Kwolek-Mirek, Magdalena
    Bartosz, Grzegorz
    Bilinski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1041168.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    replicative aging
    Saccharomyces cerevisiae
    cell volume
    yeast
    Opis:
    Reaching the limit of cell divisions, a phenomenon referred to as replicative aging, of the yeast Saccharomyces cerevisiae involves a progressive increase in the cell volume. However, the exact relationship between the number of cell divisions accomplished (replicative age), the potential for further divisions and yeast cell volume has not been investigated thoroughly. In this study an increase of the yeast cell volume was achieved by treatment with pheromone α for up to 18 h. Plotting the number of cell divisions (replicative life span) of the pheromone-treated cells as a function of the cell volume attained during the treatment showed an inverse linear relationship. An analogous inverse relationship between the initial cell volume and replicative life span was found for the progeny of the pheromone-treated yeast. This phenomenon indicates that attaining an excessive volume may be a factor contributing to the limitation of cellular divisions of yeast cells.
    Źródło:
    Acta Biochimica Polonica; 2006, 53, 4; 747-751
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The rules of aging: are they universal? Is the yeast model relevant for gerontology?
    Autorzy:
    Bilinski, Tomasz
    Zadrag-Tecza, Renata
    Powiązania:
    https://bibliotekanauki.pl/articles/1039193.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    aging
    age related diseases
    longevity
    yeast
    Opis:
    The success of experimental biology was possible due to the use of model organisms. It is believed that the mechanisms of aging have a universal character and they are conserved in a wide range of organisms. The explanation of these universal mechanisms by tracing survival curves of model organisms clearly suggests that death of individuals is a direct consequence of aging. Furthermore, the use of unicellular organisms like yeast Saccharomyces cerevisiae to explain the aging processes of multicellular organisms runs the risk of oversimplification. Aging is a very complex process and therefore in this paper we present arguments suggesting that some of these fundamental assumptions require a deep rethinking and verification.
    Źródło:
    Acta Biochimica Polonica; 2014, 61, 4; 663-669
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The links between hypertrophy, reproductive potential and longevity in the Saccharomyces cerevisiae yeast
    Autorzy:
    Molon, Mateusz
    Zadrag-Tecza, Renata
    Powiązania:
    https://bibliotekanauki.pl/articles/1038822.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    yeast
    lifespan
    longevity
    hypertrophy
    Opis:
    The yeast Saccharomyces cerevisiae has long been used as a model organism for studying the basic mechanisms of aging. However, the main problem with the use of this unicellular fungus is the unit of "longevity". For all organisms, lifespan is expressed in units of time, while in the case of yeast it is defined by the number of daughter cells produced. Additionally, in yeast the phenotypic effects of mutations often show a clear dependence on the genetic background, suggesting the need for an analysis of strains representing different genetic backgrounds. Our results confirm the data presented in earlier papers that the reproductive potential is strongly associated with an increase in cell volume per generation. An excessive cell volume results in the loss of reproductive capacity. These data clearly support the hypertrophy hypothesis. The time of life of all analysed mutants, with the exception of sch9D, is the same as in the case of the wild-type strain. Interestingly, the 121% increase of the fob1D mutant's reproductive potential compared to the sfp1D mutant does not result in prolongation of the mutant's time of life (total lifespan).
    Źródło:
    Acta Biochimica Polonica; 2016, 63, 2; 329-334
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Yeast as a biosensor for antioxidants: simple growth tests employing a Saccharomyces cerevisiae mutant defective in superoxide dismutase
    Autorzy:
    Żyracka, Ewa
    Zadrąg, Renata
    Kozioł, Sabina
    Krzepiłko, Anna
    Bartosz, Grzegorz
    Biliński, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1041375.pdf
    Data publikacji:
    2005
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    superoxide dismutase
    Saccharomyces cerevisiae
    antioxidants
    ascorbate
    yeast
    Opis:
    Mutants of Saccharomyces cerevisiae devoid of Cu,Zn-superoxide dismutase are hypersensitive to a range of oxidants, hyperbaric oxygen and hyperosmotic media, show lysine and methionine auxotrophy when grown under the atmosphere of air and have a shortened replicative life span when compared to the wild-type strain. Ascorbate and other antioxidants can ameliorate these defects, which may be a basis of simple tests sensing the presence of antioxidants. In particular, tests of growth on solid medium (colony formation) in the absence of methionine and/or lysine, or in the presence of 0.8 M NaCl can be useful for detection and semiquantitative estimation of compounds of antioxidant properties. Hypoxic atmosphere was found to increase the sensitivity of detection of antioxidants. The test of abolishment of lysine auxotrophy showed a concentration dependence of the antioxidant effects of cysteine and N-acetylcysteine which, however, lost their protective action at high concentration, in contrast to glutathione which was effective also at higher concentrations.
    Źródło:
    Acta Biochimica Polonica; 2005, 52, 3; 679-684
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dependence of the yeast Saccharomyces cerevisiae post-reproductive lifespan on the reproductive potential
    Autorzy:
    Zadrag-Tecza, Renata
    Molon, Mateusz
    Mamczur, Jan
    Bilinski, Tomasz
    Powiązania:
    https://bibliotekanauki.pl/articles/1039620.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    aging
    lifespan
    oxidative stress
    yeast
    Opis:
    The lifespan of budding yeast cells is divided into two stages: reproductive and post-reproductive. The post-reproductive stage of the yeast's lifespan has never been characterized before. We have analyzed the influence of various mutations on the post-reproductive (PRLS) and replicative (RLS) lifespans. The results indicate that PRLS demonstrates an inverse relationship with RLS. The observed lack of differences in the total lifespan (TLS) (expressed in units of time) of strains differing up to five times in RLS (expressed in the number of daughters formed) suggests the necessity of revision of opinions concerning the use of yeast as a model organism of gerontology.
    Źródło:
    Acta Biochimica Polonica; 2013, 60, 1; 111-115
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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