Cited by 367Stress Responses and CortisolAdrenal Hormones and DisordersCircadian rhythm and melatonin

The cortisol response to awakening in relation to different challenge tests and a 12-hour cortisol rhythm

Schmidt-Reinwald, A., Pruessner, J.C., Hellhammer, D.H., Federenko, I., Rohleder, N., Schürmeyer, T.H., Kirschbaum, C.·1999·Life Sciences

Abstract

Recent studies have shown that cortisol levels rapidly increase within the first 30 minutes after awakening. This response is rather robust over weeks or months and is altered by chronic stress and burnout. The present study investigated to what extent the cortisol response to awakening relates to responses following hCRH, ACTH(1-24), or psychosocial stress challenges in 22 healthy subjects. Furthermore, a 12-hour circadian cortisol profile was obtained to compare the morning response with cortisol levels obtained throughout the day. Results show that the morning cortisol response was of similar magnitude to that following injection of 1 microg/kg h-CRH or exposure to a brief psychosocial stressor (TSST). All of these were significantly smaller compared to maximal stimulation of the adrenal cortex by ACTH(1-24). Correlation analyses revealed that the morning cortisol response was closely related only to the cortisol response following 0.25 mg ACTH(1-24) (r=0.63, p=0.002). We conclude that the morning cortisol response to awakening can provide important information on the (re)activity of the HPA axis in addition to more 'traditional' methods like hCRH or Synacthen challenge tests. The sensitivity/capacity of the adrenal cortex appears to play a crucial role for the magnitude of cortisol responses observed after awakening.

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Crossref · 10.1016/s0024-3205(99)00103-4

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  • The stable cortisol level may be explained by a diurnal effect: cortisol is highest in the morning, decreases during waking hours, and is lowest in the evening, and the evening rehearsal time may have restricted cortisol secretion dynamics.

    “The stable level may be explained by a diurnal effect. While the CORT levels showed the highest concentration in the morning, they decreased during the waking hours and reached the lowest level in the evening (Schmidt-Reinwald et al., 1999). Given that the choir rehearsal took place between 8.30 and 9.30 p.m., it is possible that the secretion dynamics of CORT were restricted at this time of day.”

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Authors
Schmidt-Reinwald, A., Pruessner, J. C., Hellhammer, D. H., Federenko, I., Rohleder, N., Schürmeyer, T. H., & Kirschbaum, C.
Affiliations
Universität Trier (DE)
Corresponding author
Kirschbaum, C.
Venue
Life Sciences
Publisher
Elsevier BV
Published
1999-03
Volume
64
Issue
18
Pages
1653-1660
ISSN
0024-3205 (ISSN-L)
OpenAlex
W2038352072
Cited by
367
References
11
Citations by year
2026: 5 · 2025: 4 · 2024: 6 · 2023: 11 · 2022: 7 · 2021: 11 · 2020: 15 · 2019: 13 · 2018: 14 · 2017: 13 · 2016: 15 · 2015: 17 · 2014: 30 · 2013: 19 · 2012: 15
FWCI
2.76
Type
journal article
Language
en
Open access
closed
Locations
  • Life Sciences (publishedVersion)
  • PubMed (publishedVersion)
Funders
Deutsche Forschungsgemeinschaft
Topics
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
Keywords
cortisol awakening response, diurnal cortisol rhythm, hypothalamic-pituitary-adrenal axis, chronic stress, burnout
MeSH terms
Adrenal Cortex, Adrenocorticotropic Hormone, Adult, Circadian Rhythm, Corticotropin-Releasing Hormone, Female, Humans, Hydrocortisone, Male, Saliva, Sleep, Stress, Psychological, Time Factors

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