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Abstract
Adenylate cyclase activity was measured in particulate fractions prepared from bovine and human corneal endothelium. Bovine enzyme activity was stimulated by fluoride, 5'-guanylylimidodiphosphate (GppNp) and beta-adrenergic agonists. Drug stimulation patterns of the human enzyme appeared qualitatively similar, but activities were generally higher than those of the bovine enzyme. This study demonstrates the existence of a receptor-mediated adenylate cyclase system in bovine and human corneal endothelium and suggests a possible role for cycli AMP in corneal endothelial physiology.