Cited by 590Fibroblast Growth Factor ResearchAdipokines, Inflammation, and Metabolic DiseasesMetabolism, Diabetes, and Cancer

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Circulating FGF21 Is Liver Derived and Enhances Glucose Uptake During Refeeding and Overfeeding

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Abstract

Fibroblast growth factor (FGF)21 is an endocrine hormone that is expressed in multiple tissues and functions physiologically to maintain energy homeostasis. FGF21 is being pursued as a therapeutic target for diabetes and obesity because of its rapid and potent effects on improving insulin sensitivity. However, whether FGF21 enhances insulin sensitivity under physiologic conditions remains unclear. Here, we show that liver-derived FGF21 enters the circulation during fasting but also remains present and functional during the early stage of refeeding. After a prolonged fast, FGF21 acts as an insulin sensitizer to overcome the peripheral insulin resistance induced by fasting, thereby maximizing glucose uptake. Likewise, FGF21 is produced from the liver during overfeeding and mitigates peripheral insulin resistance. DIO FGF21 liver-specific knockout, but not FGF21 adipose-specific knockout, mice have increased insulin resistance and decreased brown adipose tissue–mediated glucose disposal. These data are compatible with the concept that FGF21 functions physiologically as an insulin sensitizer under conditions of acute refeeding and overfeeding.

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Authors
Markan, K. R., Naber, M. C., Ameka, M. K., Anderegg, M. D., Mangelsdorf, D. J., Kliewer, S. A., Mohammadi, M., & Potthoff, M. J.
Affiliations
  • University of Iowa (US)
  • Howard Hughes Medical Institute (US)
  • The University of Texas Southwestern Medical Center (US)
  • New York University (US)
Corresponding author
Potthoff, Matthew J.
Venue
Diabetes
Published
2014-11-13
Volume
63
Issue
12
Pages
4057-4063
ISSN
  • 0012-1797 (ISSN-L)
  • 1939-327X
OpenAlex
W2133706171
Cited by
590
References
23
Citations by year
2026: 26 · 2025: 42 · 2024: 41 · 2023: 60 · 2022: 56 · 2021: 64 · 2020: 62 · 2019: 60 · 2018: 44 · 2017: 53 · 2016: 51 · 2015: 28 · 2014: 3
FWCI
18.44
Type
journal article
Language
en
Open access
Locations
  • Diabetes (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Howard Hughes Medical Institute
  • National Institutes of Health (5p60dk020593-31)
  • National Institute of Diabetes and Digestive and Kidney Diseases (P60-DK020593, DK 20593, R01DK067158, P30DK020593)
  • National Institute of Dental and Craniofacial Research (R01DE013686)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fibroblast Growth Factor Research
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adipokines, Inflammation, and Metabolic Diseases
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Metabolism, Diabetes, and Cancer
Keywords
FGF21, insulin sensitivity, insulin resistance, refeeding, overfeeding, fasting, glucose uptake, brown adipose tissue, energy homeostasis, obesity, liver-specific knockout
MeSH terms
Adipose Tissue, Animals, Blood Glucose, Adipose Tissue, Brown, Fasting, Fibroblast Growth Factors, Glucose, Insulin, Insulin Resistance, Liver, Mice, Knockout, Mice

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