Oral loading with L-tryptophan may augment the simultaneous release of ACTH and beta-endorphin that accompanies periaqueductal stimulation in humans.
D000324:Adrenocorticotropic Hormone / Q000134:cerebrospinal fluid*; D000368:Aged; D001921:Brain / Q000502:physiology*; D002535:Cerebral Aqueduct; D004558:Electric Stimulation; D004723:Endorphins / Q000134:cerebrospinal fluid*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D013268:Stimulation, Chemical; D013997:Time Factors; D014364:Tryptophan / Q000494:pharmacology*
D004723:Endorphins; D014364:Tryptophan; D000324:Adrenocorticotropic Hormone