Protection of Negative Gravitaxis in Euglena gracilis Z against Gamma-ray Irradiation by Trolox C
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概要
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The protective effects of Trolox on the inhibition of negative gravitaxis in Euglena gracilis exposed to 200 Gy ^<60>Co gamma-rays were examined using different concentrations (1, 10 and 100 μM). The orientation precision of the negative gravitaxis was quantified using the r-value. A significant decrease in the r-value was observed in gamma-irradiated samples (0.18+/-0.03) compared to those of non-irradiated samples (0.47+/-0.03). There were no significant changes in the r-value of cells exposed to 200 Gy gamma-rays by the addition of 1 or 10 μM of Trolox. A significant increase (0.19) in the r-value of cells exposed to 200 Gy with 100 μM Trolox was observed. The results indicates that Trolox at a concentration of 100 μM protects negative gravitaxis against ^<60>Co gamma-ray irradiation at a dose of 200 Gy. It also suggests that the negative gravitaxis of Euglena gracilis is affected by free radicals.
- 日本放射線影響学会の論文
著者
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YASUDA Hiroshi
Research Center for Radiation Protection, National Institute of Radiological Sciences
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Doi Masahiro
National Institute Of Radiological Sciences
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YASUDA Hiroshi
東大
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Doi Masahiro
Research Center For Radiation Safety National Institute Of Radiological Sciences
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SAKASHITA Tetsuya
National Institute of Radiological Sciences
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SAKASHITA TETSUYA
Research Center for Radiation Safety, National Institute of Radiological Sciences
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FUMA SHOICHI
Research Center for Radiation Safety, National Institute of Radiological Sciences
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HADER DONAT-P.
Institut fur Botanik und Pharmazeutische Biologie der Friedrich-Alexander Universitat
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Sakashita Tetsuya
Research Center For Radiation Safety National Institute Of Radiological Sciences
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Yasuda H
National Inst. Radiological Sci. Chiba‐shi Jpn
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Fuma Shoichi
Env. Toxic. Sci. Cent. Radiat. Safety Nat. Inst. Rad. Sci.(nirs)
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Fuma Shoichi
Research Center For Radiation Safety National Institute Of Radiological Sciences
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Haeder D‐p
Institut Fur Botanik Und Pharmazeutische Biologie Der Friedrich-alexander Universitat
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Doi Masahiro
Environmental And Toxicological Sciences Research Group National Institute Of Radiological Sciences
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Yasuda H
東大
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Yasuda Hiroshi
Research Center For Advanced Science And Technology University Of Tokyo
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Yasuda Hiroshi
Research Center For Advanced Science And Technology The University Of Tokyo
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Doi Masahiko
Research Center for Radiation Safety, National Institute of Radiological Sciences
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