Van Loon G R, De Souza E B
Res Commun Chem Pathol Pharmacol. 1978 Oct;22(1):203-4.
Acute intracisternal injection of human beta-endorphin results in increased plasma concentration of adrenocorticotropic hormone (ACTH). Repeated injections of beta-endorphin are associated with the development of tolerance with regard to this ACTH-stimulating effect.