Transient high-affinity binding of agonists to alpha 1-adrenergic receptors of intact liver cells.

Abstract

At alpha 1-adrenergic receptors in isolated rat liver parenchymal cells, (-)-epinephrine is potent in eliciting a maximal increase in glycogenolysis (Kact = 24 nM). This contrasts with a 100-fold lower affinity for the agonist at alpha 1-adrenergic receptors of intact hepatocytes determined from equilibrium competition assays with the alpha 1-adrenergic… (More)

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