Cited by 354Fibroblast Growth Factor ResearchAdipose Tissue and MetabolismPeroxisome Proliferator-Activated Receptors

Fibroblast growth factor 21 regulates lipolysis in white adipose tissue but is not required for ketogenesis and triglyceride clearance in liver

Hotta, Yuhei, Nakamura, Hirotoshi, Konishi, Morichika, Murata, Yusuke, Takagi, Hiroyuki, Matsumura, Shigenobu, Inoue, Kazuo, Fushiki, Tohru +1 more·2009·Endocrinology

Abstract

Fibroblast growth factors (Fgfs) are polypeptide growth factors with diverse functions. Fgf21, a unique member of the Fgf family, is expected to function as a metabolic regulator in an endocrine manner. Hepatic Fgf21 expression was increased by fasting. The phenotypes of hepatic Fgf21 transgenic or knockdown mice and high-fat, low-carbohydrate ketogenic diet-fed mice suggests that Fgf21 stimulates lipolysis in the white adipose tissue during normal feeding and is required for ketogenesis and triglyceride clearance in the liver during fasting. However, the physiological roles of Fgf21 remain unclear. To elucidate the physiological roles of Fgf21, we generated Fgf21 knockout (KO) mice by targeted disruption. Fgf21 KO mice were viable, fertile, and seemingly normal. Food intake, oxygen consumption, and energy expenditure were also essentially unchanged in Fgf21 KO mice. However, hypertrophy of adipocytes, decreased lipolysis in adipocytes, and decreased blood nonesterified fatty acid levels were observed when Fgf21 KO mice were fed normally. In contrast, increased lipolysis in adipocytes and increased blood nonesterified fatty acid levels were observed in Fgf21 KO mice by fasting for 24 h, indicating that Fgf21 stimulates lipolysis in the white adipose tissue during feeding but inhibits it during fasting. In contrast, unexpectedly, hepatic triglyceride levels were essentially unchanged in Fgf21 KO mice. In addition, ketogenesis in Fgf21 KO mice was not impaired by fasting for 24 h. The present results indicate that Fgf21 regulates lipolysis in adipocytes in response to the metabolic state but is not required for ketogenesis and triglyceride clearance in the liver.

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Crossref · 10.1210/en.2009-0119

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25 of 25 references verified0 citation errors · 0 not checkable

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  • Under fasted conditions, FGF21 increases hepatic gluconeogenesis, β-oxidation, and ketogenesis in mice.

    “Under fasted conditions, FGF21 increases hepatic gluconeogenesis, β-oxidation, and ketogenesis in mice [142,154].”

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Authors
Hotta, Y., Nakamura, H., Konishi, M., Murata, Y., Takagi, H., Matsumura, S., Inoue, K., Fushiki, T., & Itoh, N.
Affiliations
Kyoto University (JP)
Corresponding author
Konishi, Morichika
Venue
Endocrinology
Published
2009-07-09
Volume
150
Issue
10
Pages
4625-4633
ISSN
  • 0013-7227 (ISSN-L)
  • 1945-7170
OpenAlex
W2042911346
Cited by
352
References
25
Citations by year
2026: 13 · 2025: 14 · 2024: 20 · 2023: 14 · 2022: 19 · 2021: 13 · 2020: 18 · 2019: 25 · 2018: 27 · 2017: 28 · 2016: 27 · 2015: 30 · 2014: 24 · 2013: 23 · 2012: 30
FWCI
7.78
Type
journal article
Language
en
Open access
closed
Locations
  • Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Fibroblast Growth Factor Research
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
FGF21, lipolysis, white adipose tissue, ketogenesis, triglyceride clearance, liver, fasting, free fatty acids, adipocyte hypertrophy, FGF21 knockout mice, energy metabolism, ketogenic diet
MeSH terms
Animals, Fasting, Fibroblast Growth Factors, Glycogen, Ketone Bodies, Lipolysis, Liver, Male, Mice, Inbred C57BL, Phenotype, Triglycerides, Gene Expression, Adipocytes, Mice, Knockout, Mice, Adipose Tissue, White, Gene Knockout Techniques

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