Yazar "Kurtoglu E.L." seçeneğine göre listele

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    Genotoxic effects of tacrolimus on human lymphocyte cells.
    (2012) Kurtoglu E.L.; Yuksel S.
    We designed in vitro study to determine possible genotoxic effects oftacrolimus (FK-506), which is used as a potent immunosuppressive drug, by using sister chromatid exchange (SCEs), chromosome aberration (CAs), micronuclei tests (MN) and cell growth kinetics such as mitotic index (MI) and replication index (RI) in human lymphocytes. The cells were treated with 5, 25, 50, and 100 ng/mL concentrations of tacrolimus, for 24 h and 48 h treatment periods. Tacrolimus induced CA and MN frequency at all concentrations for 24 and 48 h In additon, it induced the SCE at the highest concantration for 24 h and at 25 and 100 ng/mL for 48 h. Tacrolimus decreased MI at all concentrations (except 5 ng/mL) for all treatment periods. It also inhibited the RI at 50 and 100 ng/mL concentrations for 24 h and at all concentrations for 48 h. Treatments given with tacrolimus result in the enhance of the different endpoints ofgenotoxicity, suggesting its mutagenic action on lymphocytes in vitro.
  • Küçük Resim Yok
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    Protective effect of extracts of teucrium polium and rumex crispus against cyclophosphamide-induced genotoxic damage in human lymphocytes
    (Eco-Vector LLC, 2019) Yuksel S.; Sezer S.K.; Kurtoglu E.L.; Bag H.G.
    Teucrium polium (T. polium) and Rumex crispus (R. crispus) are plant species that grow widely in Anatolia and are thought to have healing effects for many diseases. In this study plant extracts are suggested as alternative agents in repairing cellular damage by using sister chromatid exchange (SCE), micronucleus (MN), mitotic index (MI), replication index (RI) and nuclear abnormalities (NAs), against the genotoxicity of cyclophosphamide (CP) in the human lymphocyte cells. 8 experimental groups were formed in the study. The cell culture medium was supplemented with 0.16 ?g/ml CP and the cells were treated with 50, 100 and 250 ?M T. polium and R. crispus extracts in the presence and absence of CP. As a result, CP significantly decreased MI frequency while increasing SCE, MN and NAs frequencies in cells. 100 ?M T. polium plus CP decreased SCEs when compared with CP alone. In addition, MN frequency was significantly decreased in 100 ?M T. polium plus CP and 250 ?M R. crispus plus CP combine groups. Our results suggest that these plant extracts are not genetically damaging and have improving effects at these doses. © 2019 Eco-Vector LLC. All rights reserved.