Cited by 42Exercise and Physiological ResponsesMetabolism, Diabetes, and CancerCardiovascular and exercise physiology

Control of gluconeogenic genes during intense/prolonged exercise: hormone-independent effect of muscle-derived IL-6 on hepatic tissue and PEPCK mRNA

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Banzet, Sébastien, Koulmann, Nathalie, Simler, Nadine, Sanchez, Hervé, Chapot, Rachel, Serrurier, Bernard, Peinnequin, André, Bigard, Xavier·2009·Journal of Applied Physiology

Abstract

Prolonged intense exercise is challenging for the liver to maintain plasma glucose levels. Hormonal changes cannot fully account for exercise-induced hepatic glucose production (HGP). Contracting skeletal muscles release interleukin-6 (IL-6), a cytokine able to increase endogenous glucose production during exercise. However, whether this is attributable to a direct effect of IL-6 on liver remains unknown. Here, we studied hepatic glycogen, gluconeogenic genes, and IL-6 signaling in response to one bout of exhaustive running exercise in rats. To determine whether IL-6 can modulate gluconeogenic gene mRNA independently of exercise, we injected resting rats with recombinant IL-6. Exhaustive exercise resulted in a profound decrease in liver glycogen and an increase in gluconeogenic gene mRNA levels, phosphoenolpyruvate-carboxykinase (PEPCK), glucose-6-phosphatase (G6P), and peroxisome proliferator-activated receptor-gamma coactivator-1alpha (PGC-1alpha), suggesting a key role for gluconeogenesis in hepatic glucose production. This was associated to an active IL-6 signaling in liver tissue, as shown by signal transducer and activator of transcription and CAAT/enhancer binding protein-beta phosphorylation and IL-6-responsive gene mRNA levels at the end of exercise. Recombinant IL-6 injection resulted in an increase in IL-6-responsive gene mRNA levels in the liver. We found a dose-dependent increase in PEPCK gene mRNA strongly correlated with IL-6-induced gene mRNA levels. No changes in G6P and PGC-1alpha mRNA levels were found. Taken together, our results suggest that, during very demanding exercise, muscle-derived IL-6 could help increase HGP by directly upregulating PEPCK mRNA abundance.

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Crossref · 10.1152/japplphysiol.00739.2009

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  • Gluconeogenesis is normally not engaged in positive energy balance states, with the exception of forced exercise.

    “Gluconeogenesis is normally not engaged in positive energy balance states, with the exception of forced exercise (Banzet et al., 2009).”

    From Origin and function of stress-induced IL-6 in murine models (2020) · cites this paper as Banzet et al., 2009

  • Other studies demonstrate STAT3 regulation of the same gluconeogenic genes such as Pck1 and G6pc and a role for IL6 in exercise-mediated hepatic gluconeogenesis.

    “While IL6 does not appear to increase gluconeogenesis at rest (Steensberg et al., 2003), our studies resonate well with other studies demonstrating STAT3 regulation of the same gluconeogenic genes such as Pck1 and G6pc and by studies demonstrating a role for IL6 in exercise-mediated hepatic gluconeogenesis (Banzet et al., 2009).”

    From Origin and function of stress-induced IL-6 in murine models (2020) · cites this paper as Banzet et al., 2009

  • In forced exercise, IL6 is derived from myocytes and induces hepatic gluconeogenesis.

    “In this setting, IL6 is derived from myocytes and induces hepatic gluconeogenesis.”

    From Origin and function of stress-induced IL-6 in murine models (2020) · cites this paper as Banzet et al., 2009

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Authors
Banzet, S., Koulmann, N., Simler, N., Sanchez, H., Chapot, R., Serrurier, B., Peinnequin, A., & Bigard, X.
Affiliations
Service de Santé des Armées (FR)
Corresponding author
Banzet, Sébastien
Venue
Journal of Applied Physiology
Published
2009-12
Volume
107
Issue
6
Pages
1830-1839
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2027721904
Cited by
42
References
48
Citations by year
2025: 2 · 2023: 2 · 2022: 4 · 2021: 4 · 2020: 3 · 2019: 2 · 2018: 4 · 2017: 1 · 2016: 3 · 2015: 1 · 2014: 2 · 2013: 1 · 2012: 7
FWCI
4.41
Type
journal article
Language
en
Open access
Licence
other-oa
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
  • HAL (submittedVersion, other-oa)
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 › Complementary and alternative medicine › Cardiovascular and exercise physiology
Keywords
interleukin-6, hepatic glucose production, gluconeogenesis, phosphoenolpyruvate carboxykinase, glucose-6-phosphatase, PGC-1α, liver glycogen, physical activity, IL-6 signaling, STAT3, C/EBPβ, exhaustive running, plasma glucose
MeSH terms
Peroxisome Proliferator-Activated Receptor Gamma Coactivator 1-alpha, Analysis of Variance, Animals, Blood Glucose, Enzyme-Linked Immunosorbent Assay, Physical Exertion, Female, Gluconeogenesis, Glucose-6-Phosphatase, Glycogen, Liver, Phosphoenolpyruvate Carboxykinase (GTP), RNA, Messenger, Time Factors, Transcription Factors, Blotting, Western, Transcriptional Activation, Interleukin-6, RNA-Binding Proteins, Rats, Wistar, Muscle, Skeletal, Reverse Transcriptase Polymerase Chain Reaction, Rats

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