Reduction of radiation sensitivity of dry bacterial spores with hydrogen sulfide.
Hydrogen sulfide redtuces the lethal effect of x-rays in dry spores by about 50 percent when given after irradiation, and by approximately 75 percent when present during irradiation. The first effect is the result of removal of radicals that are toxic when combined with oxygen; the second, the removcal of radicals that become toxic in the absence of oxygen. With these results we construct an explanation of the action of sulfhydryl compounds in protection against radiation damage.
D001419:Bacteria / Q000528:radiation effects*; D006862:Hydrogen Sulfide; D010100:Oxygen; D011830:Radiation Effects; D011836:Radiation Tolerance; D013170:Spores; D013171:Spores, Bacterial; D013438:Sulfhydryl Compounds; D013440:Sulfides / Q000494:pharmacology*
D013438:Sulfhydryl Compounds; D013440:Sulfides; D010100:Oxygen; D006862:Hydrogen Sulfide
BACTERIA/radiation effects; RADIATION EFFECTS/experimental; SULFIDES/pharmacology