Abstract:
Muscle activity can be reversibly arrested by administering a reagent, such as 2,3-butanedione monoxime (BDM), which selectively blocks the interaction of the contractile proteins actin and myosin. Muscle such as the heart is contacted with the reagent to arrest activity and, after surgery or transplantation, the reagent is removed from the muscle to restore muscle activity. The preferred reagent BDM has the following structure: ##STR1##.