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Wyszukujesz frazę "Zadrąg, Renata" wg kryterium: Autor


Wyświetlanie 1-2 z 2
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:
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
    Wyświetlanie 1-2 z 2

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