Radioprotective Effects of Dimethyl Sulfoxide in Golden Hamster Embryo Cells Exposed to γ Rays at 77 K: I. Radical Formation as Studied by Electron Spin Resonance

1990 ◽  
Vol 124 (1) ◽  
pp. 66 ◽  
Author(s):  
Tetsuo Miyazaki ◽  
Yuji Hayakawa ◽  
Keiji Suzuki ◽  
Masao Suzuki ◽  
Masami Watanabe
Keyword(s):  
Electron Spin Resonance ◽  
Dimethyl Sulfoxide ◽  
Electron Spin ◽  
Golden Hamster ◽  
Radical Formation ◽  
Spin Resonance ◽  
Hamster Embryo Cells ◽  
Embryo Cells ◽  
Γ Rays

Radioprotective Effects of Dimethyl Sulfoxide in Golden Hamster Embryo Cells Exposed to γ Rays at 77 K: II. Protection from Lethal, Chromosomal, and DNA Damage

1990 ◽  
Vol 124 (1) ◽  
pp. 73 ◽  
Author(s):  
Masami Watanabe ◽  
Masao Suzuki ◽  
Keiji Suzuki ◽  
Yuji Hayakawa ◽  
Tetsuo Miyazaki
Keyword(s):  
Dna Damage ◽  
Dimethyl Sulfoxide ◽  
Golden Hamster ◽  
Hamster Embryo Cells ◽  
Embryo Cells ◽  
Γ Rays

Radiolysis of ethyl iodide and carbon tetrachloride mixtures at 77°K

1968 ◽  
Vol 46 (10) ◽  
pp. 1625-1632 ◽  
Author(s):  
R. M. Leblanc ◽  
F. C. Thyrion ◽  
J. A. Herman
Keyword(s):  
Electron Spin Resonance ◽  
Charge Transfer ◽  
Carbon Tetrachloride ◽  
Electron Spin ◽  
Ethyl Iodide ◽  
Ion Molecule Reactions ◽  
Positive Ions ◽  
Spin Resonance ◽  
Γ Rays ◽  
The Difference

The radical yields of C2H5• and CCl3• observed by electron spin resonance of CCl4 + C2H5I mixtures irradiated by γ rays at 77°K are compared with yields of HCl, I2, and HI measured after thawing. The dissociative capture of thermalized electrons by CCl4 is extremely effective and accounts for most of the observed radicals. The difference between yields of HCl and CCl3• results from charge transfer from C2H5I+ to CCl3•. The formation of iodine proceeds both from neutralization processes of Cl− ions with positive ions formed from C2H5I, and from ion–molecule reactions.

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