Effects of X-Irradiation and Cysteine Injection on Enzyme Systems of Rat Tissues.

Abstract

Whole body X-irradiation has no effect on adenosinetri-phosphatase, cytochrome oxidase or lactic dehydrogenase activities of spleen, liver or kidney of rats. Succinoxidase activity was reduced in the spleen of irradiated rats but remained normal in the liver and kidneys. The in vivo inhibition of spleen succinoxidase by X-rays could be prevented by either pre- or post-irradiation injn. of l-cysteine.