Cited by 464Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismPeroxisome Proliferator-Activated Receptors

Hypoxia in adipose tissue: a basis for the dysregulation of tissue function in obesity?

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Trayhurn, Paul, Wang, Bohan, Wood, I. Stuart·2008·British Journal of Nutrition

Abstract

White adipose tissue is a key endocrine and secretory organ, releasing multiple adipokines, many of which are linked to inflammation and immunity. During the expansion of adipose tissue mass in obesity there is a major inflammatory response in the tissue with increased expression and release of inflammation-related adipokines, including IL-6, leptin, monocyte chemoattractant protein-1 and TNF-α, together with decreased adiponectin production. We proposed in 2004 (Trayhurn & Wood,Br J Nutr92, 347–355) that inflammation in adipose tissue in obesity is a response to hypoxia in enlarged adipocytes distant from the vasculature. Hypoxia has now been directly demonstrated in adipose tissue of several obese mouse models (ob/ob, KKAy, diet-induced) and molecular studies indicate that the level of the hypoxia-inducible transcription factor, hypoxia-inducible factor-1α, is increased, as is expression of the hypoxia-sensitive marker gene, GLUT1. Cell- culture studies on murine and human adipocytes show that hypoxia (induced by low O 2 or chemically) leads to stimulation of the expression and secretion of a number of inflammation-related adipokines, including angiopoietin-like protein 4, IL-6, leptin, macrophage migration inhibitory factor and vascular endothelial growth factor. Hypoxia also stimulates the inflammatory response of macrophages and inhibits adipocyte differentiation from preadipocytes. GLUT1 gene expression, protein level and glucose transport by human adipocytes are markedly increased by hypoxia, indicating that low O 2 tension stimulates glucose utilisation. It is suggested that hypoxia has a pervasive effect on adipocyte metabolism and on overall adipose tissue function, underpinning the inflammatory response in the tissue in obesity and the subsequent development of obesity-associated diseases, particularly type 2 diabetes and the metabolic syndrome.

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  • The enlargement of adipose tissue in obesity induces mechanical stress, ER stress and hypoxia in adipocytes, resulting in the release of free fatty acids and inflammatory cytokines such as IL-6 and TNFα and chemokines, suggesting activation of the IL-6 Amp.

    “The enlargement of adipose tissue in obesity induces mechanical stress, ER stress and hypoxia in adipocytes, resulting in the release of free fatty acids (FFAs) and inflammatory cytokines such as IL-6 and TNFα and chemokines (303–305), suggesting activation of the IL-6 Amp.”

    From IL-6 in inflammation, autoimmunity and cancer (2021) · cites this paper as [305]

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  • Galectin-3 ablation accelerates lipid-induced atherogenesis.

    “and recent studies have shown that galectin-3 ablation accelerates lipid-induced atherogenesis (501) .”
  • Hypoxia in adipose tissue of obese patients is supported by the observation that cardiac output and blood flow directed to adipose tissue are not increased during obesity.

    “In humans, the existence of hypoxia in the adipose tissue of obese patients is supported by the observation that although obese patients have more adipose tissue than lean patients, the cardiac output and blood flow directed to adipose tissue are not increased during obesity (24).”

    From Hypoxia decreases insulin signaling pathways in adipocytes. (2009) · cites this paper as [24]

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Authors
Trayhurn, P., Wang, B., & Wood, I. S.
Affiliations
University of Liverpool (GB)
Corresponding author
Trayhurn, Paul
Venue
British Journal of Nutrition
Published
2008-08
Volume
100
Issue
2
Pages
227-235
ISSN
  • 0007-1145 (ISSN-L)
  • 1475-2662
OpenAlex
W1972235985
Cited by
464
References
93
Citations by year
2026: 9 · 2025: 11 · 2024: 14 · 2023: 21 · 2022: 27 · 2021: 11 · 2020: 16 · 2019: 18 · 2018: 22 · 2017: 25 · 2016: 23 · 2015: 24 · 2014: 25 · 2013: 45 · 2012: 32
FWCI
5.01
Type
journal article
Language
en
Open access
Locations
  • British Journal Of Nutrition (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Directorate for Biological Sciences
  • Biotechnology and Biological Sciences Research Council
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Peroxisome Proliferator-Activated Receptors
Keywords
hypoxia, white adipose tissue, obesity, adipose tissue inflammation, adipokines, hypoxia-inducible factor-1α, GLUT1, glucose transport, adipogenesis, macrophage inflammation, ANGPTL4, leptin, interleukin-6, adiponectin, type 2 diabetes, metabolic syndrome
MeSH terms
Adipose Tissue, Animals, Humans, Obesity, Signal Transduction, Cell Hypoxia, Adipocytes, Adipose Tissue, White, Adipokines

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