Cited by 125Pancreatic function and diabetesDiabetes, Cardiovascular Risks, and LipoproteinsDiet, Metabolism, and Disease

Metabolic Adaptations to Dexamethasone‐Induced Insulin Resistance in Healthy Volunteers

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Nicod, Nathalie, Giusti, Vittorio, Besse, Christine, Tappy, Luc·2003·Obesity Research

Abstract

Objective: Insulin resistance is observed in individuals with normal glucose tolerance. This indicates that increased insulin secretion can compensate for insulin resistance and that additional defects are involved in impaired glucose tolerance or type 2 diabetes. The objective of this study was to evaluate a procedure aimed at assessing the compensatory mechanisms to insulin resistance. Research Methods and Procedures: Eight healthy nonobese female patients were studied on two occasions, before and after administration of 2 mg/d dexamethasone for 2 days during a two‐step hyperglycemic clamp. Insulin secretion was assessed from plasma insulin concentrations. Insulin sensitivity was assessed from the ratio of whole‐body glucose use (6, 6 2 H 2 glucose) to plasma insulin concentrations. This procedure is known to induce a reversible impairment of glucose tolerance and insulin resistance. Results: In all subjects, dexamethasone induced a decrease in insulin sensitivity and a proportionate increase in first‐phase insulin secretion and in insulin concentrations at both steps of glycemia. The resulting hyperinsulinemia allowed the restoration of normal whole‐body glucose uptake and the suppression of plasma free fatty acids and triglycerides. In contrast, the suppression of endogenous glucose production was impaired after dexamethasone (p < 0.01). Discussion: Increased insulin secretion fully compensates dexamethasone‐induced insulin resistance in skeletal muscle and adipose tissue but not in the liver. This suggests that failure to overcome hepatic insulin resistance can impair glucose tolerance. The compensatory insulin secretion in response to insulin resistance can be assessed by means of a hyperglycemic clamp after a dexamethasone challenge.

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  1. Finegood DT, Bergman RN, Vranic M. Estimation of en- dogenous glucose production during hyperinsulinemic eugly- cemic glucose clamps: comparison of labelled and unlabelled glucose infusates. Diabetes. 1987;36:914 -24.
  2. Metabolic Adaptations to Dexamethasone-Induced Insulin Resistance, Nicod et al. OBESITY RESEARCH Vol. 11 No. 5 May 2003 631 15508528, 2003, 5, Downloaded from https://onlinelibrary.wiley.com/doi/10.1038/oby.2003.90 by Mount Vernon Nazarene University, Wiley Online Library on [23/06/2026]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License · DOI

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Authors
Nicod, N., Giusti, V., Besse, C., & Tappy, L.
Affiliations
  • University of Lausanne (CH)
  • Centre Hospitalier Universitaire Vaudois (CH)
Corresponding author
Tappy, Luc
Venue
Obesity Research
Publisher
Wiley
Published
2003-05
Volume
11
Issue
5
Pages
625-631
ISSN
  • 1071-7323 (ISSN-L)
  • 1550-8528
OpenAlex
W1969834886
Cited by
125
References
41
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 5 · 2022: 3 · 2021: 4 · 2020: 4 · 2019: 3 · 2018: 4 · 2017: 2 · 2016: 12 · 2015: 8 · 2014: 10 · 2013: 9 · 2012: 9
FWCI
3.52
Type
journal article
Language
en
Open access
Locations
  • Obesity Research (publishedVersion)
  • PubMed (publishedVersion)
  • IRIS (submittedVersion)
  • SERVAL (Université de Lausanne) (submittedVersion)
Funders
  • National Science Foundation
  • Eli Lilly and Company
  • Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung
Topics
  • Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diabetes, Cardiovascular Risks, and Lipoproteins
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
Keywords
insulin resistance, dexamethasone, compensatory insulin secretion, first-phase insulin secretion, hyperinsulinemia, hyperglycemic clamp, hepatic insulin resistance, endogenous glucose production, plasma free fatty acids, plasma triglycerides, skeletal muscle glucose uptake, adipose tissue glucose uptake, glucose tolerance, type 2 diabetes
MeSH terms
Adult, Blood Glucose, Dexamethasone, Fatty Acids, Nonesterified, Female, Glucagon, Glucocorticoids, Glucose, Glucose Tolerance Test, Humans, Insulin, Insulin Resistance, Triglycerides, Glucose Clamp Technique

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