PMID- 9215292 OWN - NLM STAT- MEDLINE DCOM- 19970807 LR - 20220408 IS - 0021-972X (Print) IS - 0021-972X (Linking) VI - 82 IP - 7 DP - 1997 Jul TI - Exercise and circadian rhythm-induced variations in plasma cortisol differentially regulate interleukin-1 beta (IL-1 beta), IL-6, and tumor necrosis factor-alpha (TNF alpha) production in humans: high sensitivity of TNF alpha and resistance of IL-6. PG - 2182-91 AB - Although we have previously shown that the integrity of inflammatory mediator-induced activation of the hypothalamic-pituitary-adrenal axis is essential for conferring resistance to inflammatory disease in susceptible Lewis rats, the role of endogenous glucocorticoid secretion in human immune function in either health or disease is less clear. To further understand the relevance of physiological variations in plasma cortisol on immune function in humans, we evaluated ex vivo lipopolysaccharide-induced interleukin-1 beta (IL-1 beta), IL-6, and tumor necrosis factor-alpha (TNF alpha) production in the whole blood of healthy volunteers studied under conditions chosen to approximate either physiological or pharmacological glucocorticoid levels. Administration of a pharmacological dose of hydrocortisone suppressed the production of all three cytokines, whereas administration of a physiological dose of hydrocortisone suppressed only TNF alpha production. Stress-induced levels of glucocorticoids, achieved during exercise at 100% maximal oxygen utilization, suppressed IL-1 beta and TNF alpha production, but were without effect on IL-6 production. In addition, circadian variations of cortisol were associated with decreased TNF alpha production, but were without effect on IL-1 beta or IL-6 production. These studies challenge the generally accepted idea that glucocorticoids consistently suppress cytokine production and indicate a hierarchy of sensitivity, with TNF alpha having the greatest sensitivity, IL-1 beta having intermediate sensitivity, and IL-6 being resistant. The resistance of IL-6 production to glucocorticoid suppression is compatible with data suggesting an antiinflammatory as well as a proinflammatory action for this cytokine. FAU - DeRijk, R AU - DeRijk R AD - Clinical Neuroendocrinology Branch, National Institute of Mental Health, National Institutes of Health, Bethesda, Maryland 20892, USA. r.rijk@lacdr.leidenuniv.nl FAU - Michelson, D AU - Michelson D FAU - Karp, B AU - Karp B FAU - Petrides, J AU - Petrides J FAU - Galliven, E AU - Galliven E FAU - Deuster, P AU - Deuster P FAU - Paciotti, G AU - Paciotti G FAU - Gold, P W AU - Gold PW FAU - Sternberg, E M AU - Sternberg EM LA - eng PT - Journal Article PL - United States TA - J Clin Endocrinol Metab JT - The Journal of clinical endocrinology and metabolism JID - 0375362 RN - 0 (Enterotoxins) RN - 0 (Interleukin-1) RN - 0 (Interleukin-2) RN - 0 (Interleukin-6) RN - 0 (Lipopolysaccharides) RN - 0 (Superantigens) RN - 0 (Tumor Necrosis Factor-alpha) RN - 39424-53-8 (enterotoxin B, staphylococcal) RN - WI4X0X7BPJ (Hydrocortisone) SB - IM MH - Adult MH - *Circadian Rhythm MH - Dose-Response Relationship, Drug MH - Enterotoxins/pharmacology MH - *Exercise MH - Female MH - Humans MH - Hydrocortisone/administration & dosage/*blood MH - Interleukin-1/*blood MH - Interleukin-2/blood MH - Interleukin-6/*blood MH - Lipopolysaccharides/pharmacology MH - Male MH - Middle Aged MH - Superantigens/pharmacology MH - Time Factors MH - Tumor Necrosis Factor-alpha/*metabolism EDAT- 1997/07/01 00:00 MHDA- 1997/07/01 00:01 CRDT- 1997/07/01 00:00 PHST- 1997/07/01 00:00 [pubmed] PHST- 1997/07/01 00:01 [medline] PHST- 1997/07/01 00:00 [entrez] AID - 10.1210/jcem.82.7.4041 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 1997 Jul;82(7):2182-91. doi: 10.1210/jcem.82.7.4041.