Cited by 177Adrenal Hormones and DisordersPancreatic function and diabetesStress Responses and Cortisol

Metabolic Effects of Short-Term Elevations of Plasma Cortisol Are More Pronounced in the Evening Than in the Morning

Plat, L.·1999·Journal of Clinical Endocrinology & Metabolism

Abstract

To determine whether elevations of cortisol levels have more pronounced effects on glucose levels and insulin secretion in the evening (at the trough of the daily rhythm) or in the morning (at the peak of the rhythm), nine normal men each participated in four studies performed in random order. In all studies, endogenous cortisol levels were suppressed by metyrapone administration, and caloric intake was exclusively under the form of a constant glucose infusion. The daily cortisol elevation was restored by administration of hydrocortisone (or placebo) either at 0500 h or at 1700 h. In each study, plasma levels of glucose, insulin, C-peptide, and cortisol were measured at 20-min intervals for 32 h. The initial effect of the hydrocortisone-induced cortisol pulse was a short-term inhibition of insulin secretion without concomitant glucose changes and was similar in the evening and in the morning. At both times of day, starting 4-6 h after hydrocortisone ingestion, glucose levels increased and remained higher than under placebo for at least 12 h. This delayed hyperglycemic effect was minimal in the morning but much more pronounced in the evening, when it was associated with robust increases in serum insulin and insulin secretion and with a 30% decrease in insulin clearance. Thus, elevations of evening cortisol levels could contribute to alterations in glucose tolerance, insulin sensitivity, and insulin secretion.

Integrity signals

Registry

Crossref · 10.1210/jc.84.9.3082

Cites

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Cited by

Sorted by citations

Authors
Plat, L.
Venue
Journal of Clinical Endocrinology & Metabolism
Published
1999-09-01
Volume
84
Issue
9
Pages
3082-3092
ISSN
0021-972X (ISSN-L)
OpenAlex
W4250515708
Cited by
177
References
0
Citations by year
2026: 2 · 2025: 2 · 2024: 9 · 2023: 6 · 2022: 8 · 2021: 8 · 2020: 12 · 2019: 4 · 2018: 13 · 2017: 13 · 2016: 13 · 2015: 8 · 2014: 11 · 2013: 12 · 2012: 5
FWCI
2.78
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Clinical Endocrinology & Metabolism (publishedVersion)
  • Dépôt institutionnel de l'Université libre de Bruxelles (Université Libre de Bruxelles) (submittedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
Keywords
cortisol, circadian rhythm, metyrapone, insulin secretion, glucose tolerance, hyperglycemia, insulin clearance, C-peptide, glucose infusion, time of day, insulin sensitivity

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review