Cited by 455Exercise and Physiological ResponsesMetabolism, Diabetes, and CancerAdipokines, Inflammation, and Metabolic Diseases

Interleukin-6 Is a Novel Factor Mediating Glucose Homeostasis During Skeletal Muscle Contraction

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Febbraio, Mark A., Hiscock, Natalie, Sacchetti, Massimo, Fischer, Christian P., Pedersen, Bente K.·2004·Diabetes

Abstract

The mechanisms that mediate the tightly controlled production and clearance of glucose during muscular work are unclear, and it has been suggested that an unidentified “work factor” exists that influences the contraction-induced increase in endogenous glucose production (EGP). The cytokine interleukin (IL)-6 is released from skeletal muscle during contraction. Here we show that IL-6 contributes to the contraction-induced increase in EGP. Six men performed 2 h of bicycle exercise on three separate occasions, at a relatively high intensity (HI) or at a low intensity with (LO + IL-6) or without (LO) an infusion of recombinant human IL-6 that matched the circulating concentration of IL-6 seen in HI exercise. The stable isotope 6,6 2H2 glucose was infused to calculate EGP (rate of glucose appearance [Ra]), whole-body glucose disposal (rate of glucose disappearance [Rd]), and metabolic clearance rate (MCR) of glucose. Glucose Ra, Rd, and MCR were higher (P < 0.05) at HI than at LO. Throughout exercise at LO + IL-6, glucose Ra and Rd were higher (P < 0.05) than LO, even though the exercise intensity was identical. In addition, MCR was higher (P < 0.05) at LO + IL-6 than at LO at 90 min. Insulin, glucagon, epinephrine, norepinephrine, cortisol, and growth hormone were identical when comparing LO + IL-6 with LO. These data suggest that IL-6 influences glucose homeostasis during exercise. Our results provide potential new insights into factors that mediate glucose production and disposal and implicates IL-6 in the so-called “work factor.”

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Authors
Febbraio, M. A., Hiscock, N., Sacchetti, M., Fischer, C. P., & Pedersen, B. K.
Affiliations
University of Copenhagen (DK)
Venue
Diabetes
Published
2004-07-01
Volume
53
Issue
7
Pages
1643-1648
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2098882931
Cited by
455
References
29
Citations by year
2026: 20 · 2025: 18 · 2024: 27 · 2023: 27 · 2022: 24 · 2021: 28 · 2020: 28 · 2019: 19 · 2018: 24 · 2017: 25 · 2016: 14 · 2015: 12 · 2014: 26 · 2013: 19 · 2012: 21
FWCI
19.47
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed (publishedVersion)
  • RMIT Research Repository (RMIT University Library) (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • Research at the University of Copenhagen (University of Copenhagen) (submittedVersion, other-oa)
Funders
  • Sundhed og Sygdom, Det Frie Forskningsråd (22-01-009)
  • National Research Foundation
  • Danmarks Grundforskningsfond (22-01-009, 504–14)
  • Lundbeckfonden
  • Novo Nordisk
  • Augustinus Fonden
  • Rigshospitalet
  • Novo Nordisk Fonden
  • Medical Research Council
  • National Health and Medical Research Council (251558)
Topics
  • Health Sciences › Medicine › Rehabilitation › Exercise and Physiological Responses
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
Keywords
interleukin-6, glucose homeostasis, skeletal muscle contraction, physical activity, endogenous glucose production, glucose disposal, metabolic clearance rate, work factors, cytokines, glucose appearance, glucose disappearance, insulin, glucagon, epinephrine, norepinephrine, cortisol, growth hormone
MeSH terms
Adult, Bicycling, Fatty Acids, Nonesterified, Glucose, Homeostasis, Hormones, Humans, Male, Metabolic Clearance Rate, Muscle Contraction, Recombinant Proteins, Exercise, Interleukin-6, Muscle, Skeletal, Lactic Acid

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