Effect of endogenous cortisol levels on natural killer cell activity in healthy humans

Autor: Ann Ho, Mary Jeanne Kreek, Gershon Bodner
Rok vydání: 1999
Předmět:
Zdroj: Brain, behavior, and immunity. 12(4)
ISSN: 0889-1591
Popis: The aim of this study was to examine the effects of increasing and decreasing endogenous cortisol levels on natural killer (NK) cell activity in vivo. Normal healthy volunteers participated in the following studies: baseline (n = 27), metyrapone challenge test (n = 10), dexamethasone suppression test (n = 10), and adrenocorticotropic hormone (ACTH) stimulation test (n = 8). Each subject served as his own control for each study. Each subject was tested for NK activity and plasma cortisol levels at 9 a.m., just before the challenge drug administration, and at 10 a.m., except for the dexamethasone study, in which only the 9 a.m. blood was drawn, 10 h after the dexamethasone administration. On the baseline study day, a significant decrease in plasma cortisol levels was found from 9 to 10 a.m. (p
Databáze: OpenAIRE