Alterations in diurnal salivary cortisol rhythm in a population-based sample of cases with chronic fatigue syndrome

Autor(en)
Urs M Nater, Laura Solomon Youngblood, James F Jones, Elizabeth R Unger, Andrew H Miller, William C Reeves, Christine Heim
Abstrakt

OBJECTIVE: To examine diurnal salivary cortisol rhythms and plasma IL-6 concentrations in persons with chronic fatigue syndrome (CFS), persons not fulfilling a diagnosis of CFS (we term them cases with insufficient symptoms or fatigue, ISF) and nonfatigued controls (NF). Previous studies of CFS patients have implicated the hypothalamic-pituitary-adrenal axis and the immune system in the pathophysiology of CFS, although results have been equivocal.

METHODS: Twenty-eight people with CFS, 35 persons with ISF, and 39 NF identified from the general population of Wichita, Kansas, were admitted to a research ward for 2 days. Saliva was collected immediately on awakening (6:30 AM), at 08:00 AM, 12 noon, 4:00 PM, 8:00 PM and at bedtime (10:00 PM) and plasma was obtained at 7:30 AM. Salivary cortisol concentrations were assessed using radioimmunoassay, and plasma IL-6 was measured using sandwich enzyme-linked immunosorbent assay.

RESULTS: People with CFS demonstrated lower salivary cortisol concentrations in the morning and higher salivary cortisol concentrations in the evening compared with both ISF and NF groups indicating a flattening of the diurnal cortisol profile. Mean plasma IL-6 concentrations were highest in CFS compared with the other groups, although these differences were no longer significant after controlling for BMI. Attenuated decline of salivary cortisol concentrations across the day and IL-6 concentration were associated with fatigue symptoms in CFS.

CONCLUSIONS: These results suggest an altered diurnal cortisol rhythm and IL-6 concentrations in CFS cases identified from a population-based sample.

Organisation(en)
Externe Organisation(en)
Centers for Disease Control and Prevention
Journal
Journal of Psychosomatic Research
Band
70
Seiten
298-305
Anzahl der Seiten
8
ISSN
0022-3999
DOI
https://doi.org/10.1097/PSY.0b013e3181651025
Publikationsdatum
04-2008
Peer-reviewed
Ja
ÖFOS 2012
501010 Klinische Psychologie
Schlagwörter
Sustainable Development Goals
SDG 3 – Gesundheit und Wohlergehen
Link zum Portal
https://ucrisportal.univie.ac.at/de/publications/alterations-in-diurnal-salivary-cortisol-rhythm-in-a-populationbased-sample-of-cases-with-chronic-fatigue-syndrome(fae0744e-da8e-4c22-8159-ebb1874d3ca4).html