Adenine metabolism in rat skeletal muscle

Electrical stimulation, as anticipated brought about a fall in total ATP. Despite this there was little extra utilization of [8-14C]adenine to replace the ATP lost. The results suggest that allopurinol increased [8-14C]adenine utilization in both resting and stimulated muscle and, in particular, increased incorporation into ATP. After 30 minutes recovery total ATP levels had not returned to control resting values. [8-14C]adenine utilization, however, was markedly increased with most of the label incorporated into ATP. The results again suggest that addition of allopurinol to the medium increased [8-14C] adenine utilization of the label by recovering muscle.