Early effects in kidney enzyme activities after irradiation.

Brush border enzymes of proximal tubules, lysosomal activities and protein content of rat kidney were analysed after whole-body irradiation using two different experimental schedules. Maltase, alkaline phosphatase and beta-glucuronidase activities increased moderately during the first days after irradiation, whereas LAP, cathespsin D activities and protein content were not modified. No evident morphologic alterations were observed.