PMID- 32394161 OWN - NLM STAT- MEDLINE DCOM- 20211004 LR - 20211004 IS - 1720-8386 (Electronic) IS - 0391-4097 (Linking) VI - 44 IP - 1 DP - 2021 Jan TI - Insufficient glucocorticoid receptor signaling and flattened salivary cortisol profile are associated with metabolic and inflammatory indices in type 2 diabetes. PG - 37-48 LID - 10.1007/s40618-020-01260-2 [doi] AB - PURPOSE: Impaired negative feedback and hyperactivation of the hypothalamic-pituitary-adrenal (HPA) axis characterizes type 2 diabetes mellitus (T2DM). The glucocorticoid receptor (GR) is a key mediator of HPA axis negative feedback; however, its role in linking hypercortisolemia and T2DM-associated hyperglycemia, hyperlipidemia and inflammation is not yet known. METHODS: In peripheral mononuclear cells (PBMC) from 31 T2DM patients and 24 healthy controls, we measured various GR-signaling parameters such as phosphorylated GR (pGR-S211), GRalpha/GRbeta gene expression and GC-sensitivity [using the basal and dexamethasone (DEX)-induced leucine zipper (GILZ) and FK506 binding-protein (FKBP5) mRNA levels as well as the basal interleukin (IL)-1beta protein levels]. Diurnal salivary cortisol curve parameters such as the cortisol awaking response (CAR) and area under the curve (AUC(total) and AUCi) as well as inflammatory and metabolic indices were also determined. RESULTS: T2DM patients exhibited diminished pGR-S211 protein content, increased GRbeta, decreased basal GILZ and FKBP5 mRNA levels and increased IL-1beta levels. Flattened DEX-induced GILZ and FKBP5 response curves and a flattened salivary cortisol profile characterized T2DM patients. Significant associations of GR measures and saliva cortisol curve parameters with biochemical and clinical characteristics were found. CONCLUSION: Our novel data implicate an insufficient GR signaling in PBMCs in T2DM patients and HPA axis dysfunction. The significant associations of GR-signaling parameters with inflammatory and metabolic indices implicate that GR may be the critical link between HPA axis dysfunction, hypercortisolemia and diabetes-associated metabolic disturbances. Our findings provide significant insights into the contribution of GR-mediated mechanisms in T2DM aetiopathology and therapy. FAU - Panagiotou, C AU - Panagiotou C AD - Department of Clinical Biochemistry, National and Kapodistrian University of Athens, School of Medicine, University General Hospital Attikon, Rimini 1, Haidari, 12462, Athens, Greece. FAU - Lambadiari, V AU - Lambadiari V AD - Second Department of Internal Medicine and Research Institute, University General Hospital Attikon, Haidari, Greece. FAU - Maratou, E AU - Maratou E AD - Department of Clinical Biochemistry, National and Kapodistrian University of Athens, School of Medicine, University General Hospital Attikon, Rimini 1, Haidari, 12462, Athens, Greece. FAU - Geromeriati, C AU - Geromeriati C AD - Department of Clinical Biochemistry, National and Kapodistrian University of Athens, School of Medicine, University General Hospital Attikon, Rimini 1, Haidari, 12462, Athens, Greece. FAU - Artemiadis, A AU - Artemiadis A AD - Medical School, University of Cyprus, Nicosia, Cyprus. FAU - Dimitriadis, G AU - Dimitriadis G AD - Second Department of Internal Medicine and Research Institute, University General Hospital Attikon, Haidari, Greece. FAU - Moutsatsou, P AU - Moutsatsou P AD - Department of Clinical Biochemistry, National and Kapodistrian University of Athens, School of Medicine, University General Hospital Attikon, Rimini 1, Haidari, 12462, Athens, Greece. pmoutsatsou@med.uoa.gr. LA - eng GR - 11SYN_2_741/Greek Secretariat of Research and Technology, Ministry of Development/ PT - Journal Article DEP - 20200511 PL - Italy TA - J Endocrinol Invest JT - Journal of endocrinological investigation JID - 7806594 RN - 0 (Biomarkers) RN - 0 (Blood Glucose) RN - 0 (Receptors, Glucocorticoid) RN - WI4X0X7BPJ (Hydrocortisone) SB - IM MH - Biomarkers/*metabolism MH - Blood Glucose/analysis MH - Case-Control Studies MH - Diabetes Mellitus, Type 2/*complications MH - Female MH - Follow-Up Studies MH - Humans MH - Hydrocortisone/*blood MH - Inflammation/etiology/metabolism/*pathology MH - Male MH - Metabolic Diseases/etiology/metabolism/*pathology MH - Middle Aged MH - Prognosis MH - Receptors, Glucocorticoid/*metabolism MH - Saliva/*metabolism OTO - NOTNLM OT - Glucocorticoid receptor OT - Glucocorticoid sensitivity OT - Inflammation OT - Saliva cortisol OT - Type 2 diabetes mellitus EDAT- 2020/05/13 06:00 MHDA- 2021/10/05 06:00 CRDT- 2020/05/13 06:00 PHST- 2020/02/01 00:00 [received] PHST- 2020/04/15 00:00 [accepted] PHST- 2020/05/13 06:00 [pubmed] PHST- 2021/10/05 06:00 [medline] PHST- 2020/05/13 06:00 [entrez] AID - 10.1007/s40618-020-01260-2 [pii] AID - 10.1007/s40618-020-01260-2 [doi] PST - ppublish SO - J Endocrinol Invest. 2021 Jan;44(1):37-48. doi: 10.1007/s40618-020-01260-2. Epub 2020 May 11.