Cited by 324Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismCardiovascular Disease and Adiposity

Increased Adipose Tissue Oxygen Tension in Obese Compared With Lean Men Is Accompanied by Insulin Resistance, Impaired Adipose Tissue Capillarization, and Inflammation

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Goossens, Gijs H., Bizzarri, Alessandro, Venteclef, Nicolas, Essers, Yvonne, Cleutjens, Jack P., Konings, Ellen, Jocken, Johan W.E., Čajlaković, Merima +3 more·2011·Circulation

Abstract

Background—: Adipose tissue (AT) dysfunction in obesity contributes to chronic, low-grade inflammation that predisposes to type 2 diabetes mellitus and cardiovascular disease. Recent in vitro studies suggest that AT hypoxia may induce inflammation. We hypothesized that adipose tissue blood flow (ATBF) regulates AT oxygen partial pressure (AT P o 2 ), thereby affecting AT inflammation and insulin sensitivity. Methods and Results—: We developed an optochemical measurement system for continuous monitoring of AT P o 2 using microdialysis. The effect of alterations in ATBF on AT P o 2 was investigated in lean and obese subjects with both pharmacological and physiological approaches to manipulate ATBF. Local administration of angiotensin II (vasoconstrictor) in abdominal subcutaneous AT decreased ATBF and AT P o 2 , whereas infusion of isoprenaline (vasodilator) evoked opposite effects. Ingestion of a glucose drink increased ATBF and AT P o 2 in lean subjects, but these responses were blunted in obese individuals. However, AT P o 2 was higher (hyperoxia) in obese subjects despite lower ATBF, which appears to be explained by lower AT oxygen consumption. This was accompanied by insulin resistance, lower AT capillarization, lower AT expression of genes encoding proteins involved in mitochondrial biogenesis and function, and higher AT gene expression of macrophage infiltration and inflammatory markers. Conclusions—: Our findings establish ATBF as an important regulator of AT P o 2 . Nevertheless, obese individuals exhibit AT hyperoxia despite lower ATBF, which seems to be explained by lower AT oxygen consumption. This is accompanied by insulin resistance, impaired AT capillarization, and higher AT gene expression of inflammatory cell markers. Clinical Trial Registration—: URL: http://www.trialregister.nl . Unique identifier: NTR2451.

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Crossref · 10.1161/circulationaha.111.027813

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Authors
Goossens, G. H., Bizzarri, A., Venteclef, N., Essers, Y., Cleutjens, J. P., Konings, E., Jocken, J. W. E., Čajlaković, M., Ribitsch, V., Clément, K., & Blaak, E. E.
Affiliations
Joanneum Research (AT)
Venue
Circulation
Published
2011-07-05
Volume
124
Issue
1
Pages
67-76
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W2127521961
Cited by
324
References
45
Citations by year
2026: 13 · 2025: 8 · 2024: 20 · 2023: 15 · 2022: 20 · 2021: 23 · 2020: 21 · 2019: 19 · 2018: 21 · 2017: 33 · 2016: 22 · 2015: 24 · 2014: 22 · 2013: 31 · 2012: 26
FWCI
20.04
Type
journal article
Language
en
Licence
other-oa
Locations
  • Circulation (publishedVersion)
  • PubMed (publishedVersion)
  • Research Publications (Maastricht University) (publishedVersion, other-oa)
  • Research Publications (Maastricht University) (submittedVersion, other-oa)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Disease and Adiposity
Keywords
adipose tissue hypoxia, obesity, insulin resistance, mitochondrial biogenesis, angiotensin II, isoproterenol, glucose ingestion, macrophage infiltration, type 2 diabetes
MeSH terms
Adipose Tissue, Angiotensin II, Humans, Inflammation, Insulin Resistance, Isoproterenol, Male, Microcirculation, Middle Aged, Mitochondria, Obesity, Oxygen, Oxygen Consumption, Regional Blood Flow, Thinness, Vasoconstrictor Agents, Vasodilator Agents, Hyperoxia

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