... might be that tryptophan prevented the activation of the enzyme, phosphorylase, which is an indirect result of epinephrine action on the liver. This report presents evidence supporting this hypothesis: (1) The injection of tryptophan (2.5 mM/kg) prevented epinephrine-induced glycogenolysis in the liver...

... is not accompanied by changes in the phosphorylase a content or phosphorylase a/phosphorylase (total) ratio, it becomes unlikely that adrenergic mechanisms play a major role in the stimulation of carbohydrate breakdown during carbon monoxide poisoning. It appears more likely that by analogy to the condition in heart...