this hyperglycemic effect of beta-endorphin was prevented by prior systemic administration of naloxone , thus supporting the hypothesis that this beta-endorphin-induced effect is mediated at opioid receptors . beta-endorphin also markedly increased plasma concentrations of epinephrine , norepinephrine and , to a lesser extent , dopamine .
C0014563
epinephrine
C0028351
norepinephrine