PMID- 8964868 OWN - NLM STAT- MEDLINE DCOM- 19961211 LR - 20041117 IS - 0021-972X (Print) IS - 0021-972X (Linking) VI - 81 IP - 6 DP - 1996 Jun TI - Acute glucocorticoid deficiency is associated with plasma elevations of interleukin-6: does the latter participate in the symptomatology of the steroid withdrawal syndrome and adrenal insufficiency? PG - 2303-6 AB - The cytokines tumor necrosis factor-alpha (TNF alpha), interleukin-1 (IL-1), and IL-6 are secreted at inflammatory sites in tandem and play a crucial role in the inflammatory and wound-healing processes. All three cytokines are potent activators of the hypothalamic-pituitary-adrenal axis, through which they restrain inflammation, whereas IL-6 itself plays a role in the termination of inflammation as well. To test the hypothesis that endogenous glucocorticoids exert a negative tonic effect on the secretion of these cytokines, we studied 17 patients with Cushing's disease and 2 patients with primary adrenal Cushing's syndrome before and after surgery. Plasma TNF alpha, IL-1 beta and IL-6 were measured before surgery, while the patients were hypercortisolemic; on postoperative day 4 or 5, when they were hypocortisolemic; and on postoperative day 9 or 10, when they were receiving glucocorticoid replacement. During severe hypocortisolism, on postoperative day 4 or 5, plasma IL-6 levels rose significantly, compared to the preoperative values (P < 0.001). During the same interval, TNF alpha and IL-1 beta also rose, albeit to a lesser extent. Over the same interval, patients with severe hypocortisolism experienced temperature elevation, fatigue, somnolence, flu-like symptoms, and anorexia, symptoms that have been traditionally attributed to glucocorticoid deficiency; these were also experienced by subjects that received recombinant human IL-6. There was no postoperative increase in any of the cytokines studied in the patients who were not hypocortisolemic after surgery and who also lacked the corresponding symptomatology. Plasma IL-6 concentrations decreased significantly, albeit not to normal levels, in the hypocortisolemic group of patients on postoperative day 9 or 10, when they were receiving glucocorticoid replacement. We conclude that the peripheral levels of IL-6 and to a lesser extent, those of TNF alpha and IL-1 beta are tonically inhibited by basal levels of glucocorticoids. The increased IL-6 production that occurs when cortisol levels fall might explain the symptomatology of acute glucocorticoid deficiency. FAU - Papanicolaou, D A AU - Papanicolaou DA AD - Developmental Endocrinology Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA. FAU - Tsigos, C AU - Tsigos C FAU - Oldfield, E H AU - Oldfield EH FAU - Chrousos, G P AU - Chrousos GP 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 (Glucocorticoids) RN - 0 (Interleukin-1) RN - 0 (Interleukin-6) RN - 0 (Tumor Necrosis Factor-alpha) SB - IM MH - Acute Disease MH - Adrenal Glands/surgery MH - Adrenal Insufficiency/physiopathology MH - Adult MH - Aged MH - Body Temperature MH - Female MH - Glucocorticoids/administration & dosage/*deficiency/*therapeutic use MH - Humans MH - Interleukin-1/blood MH - Interleukin-6/*blood MH - Male MH - Middle Aged MH - Substance Withdrawal Syndrome/physiopathology MH - Tumor Necrosis Factor-alpha/analysis EDAT- 1996/06/01 00:00 MHDA- 1996/06/01 00:01 CRDT- 1996/06/01 00:00 PHST- 1996/06/01 00:00 [pubmed] PHST- 1996/06/01 00:01 [medline] PHST- 1996/06/01 00:00 [entrez] AID - 10.1210/jcem.81.6.8964868 [doi] PST - ppublish SO - J Clin Endocrinol Metab. 1996 Jun;81(6):2303-6. doi: 10.1210/jcem.81.6.8964868.