Research  on  Relation  of  HRS/IRR  and  Antioxidases  in  E.coli Implanted  by  30 keV  N<SUP>+</SUP>

YANG  Tian-you; WANG  Tie-gu; TIAN  Jing; CHANG  Jing-ling

doi:10.11804/NuclPhysRev.27.02.197

YANG Tian-you, WANG Tie-gu, TIAN Jing, CHANG Jing-ling. Research on Relation of HRS/IRR and Antioxidases in E.coli Implanted by 30 keV N+[J]. Nuclear Physics Review, 2010, 27(2): 197-201. DOI: 10.11804/NuclPhysRev.27.02.197

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Research on Relation of HRS/IRR and Antioxidases in E.coli Implanted by 30 keV N⁺

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The inducement of hyperradiosensitivity/increased radioresistance(HRS/IRR) and activities of antioxidases in Escherichia coli implanted by 30 keV N⁺ and relationship between them were investigated. The results showed the change trend of the survival rate and the activity of superoxide dismutase(SOD) and Catalas(CAT) of E. coli K12 was consistent. The activity of SOD and CAT of E.coli were lower， less than 10 and 8 U/mg， when the HRS was induced at 0—5×10¹⁴  N⁺/cm² doses. And the activity of SOD and CAT of E.coli increased and reached highest rate， were 58 and 26 U/mg respectively， when the IRR was induced at 5×10¹⁴—10×10¹⁴ N⁺/cm² doses. It could be concluded that the change of SOD and CAT activity was related with the HRS/IRR.

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Research on Relation of HRS/IRR and Antioxidases in E.coli Implanted by 30 keV N+

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Research on Relation of HRS/IRR and Antioxidases in E.coli Implanted by 30 keV N⁺