RT Journal Article SR Electronic T1 Adenylate cyclase and guanylate cyclase of normal and denervated skeletal muscle JF Neurology JO Neurology FD Lippincott Williams & Wilkins SP 869 OP 869 DO 10.1212/WNL.27.9.869 VO 27 IS 9 A1 STEVEN NOVOM A1 CHARLES LEWINSTEIN YR 1977 UL http://n.neurology.org/content/27/9/869.abstract AB Cyclic nucleotides mediate the intracellular effects of various extracellular influences. To explore the possibility that nerve-muscle influences are mediated by cyclic nucleotides, we studied the effect of denervation on the cyclase enzymes of rabbit gastrocnemius using the contralateral, unoperated limb as the control. Adenylate cyclase activity decreased dramatically after denervation, while guanylate cyclase activity increased several times in all tissue fractions studied. Neither enzyme demonstrated cholinergic responsiveness. The dramatic changes in cyclase activities following denervation could result from a role of these enzymes in the mediation of nerve-muscle influences.