therefore , we conclude that 1 ) glucose intolerance of aging can not be explained by changes in plasma catecholamines , 2 ) the age-related increase in plasma norepinephrine is unrelated to dietary carbohydrate intake , and 3 ) there is no effect of age on suppression of plasma epinephrine after oral glucose administration .
C0028351
norepinephrine
C0014563
epinephrine