Cited by 135Adipokines, Inflammation, and Metabolic DiseasesCardiovascular Disease and AdiposityAdipose Tissue and Metabolism

The proatherogenic cytokine interleukin-18 is secreted by human adipocytes

Skurk, Thomas, Kolb, Hubert, Müller-Scholze, Sylvia, Röhrig, Karin, Hauner, Hans, Herder, Christian·2005·European Journal of Endocrinology

Abstract

OBJECTIVE: Interleukin (IL)-18, an important mediator of innate immunity and strong risk factor for the development of cardiovascular disease, was shown recently to be elevated in obesity. The aim of our study was to investigate whether human adipocytes produce IL-18. METHODS: Human adipose tissue was obtained from lean women undergoing elective plastic surgery and from obese individuals undergoing laparoscopic surgery (gastric banding). Preadipocytes from mammary adipose tissue were isolated and differentiated under defined adipogenic conditions. IL-18 expression was analyzed by real-time reverse transcriptase PCR, ELISA and immunocytochemistry. RESULTS: Human preadipocytes of all differentiation stages spontaneously secreted IL-18. In parallel significant amounts of IL-18 mRNA were detected. Freshly isolated mature adipocytes from subcutaneous and omental depots also released IL-18. IL-18 release from adipocytes from obese donors was about 3-fold higher compared to adipocytes from non-obese donors. CONCLUSIONS: We conclude that human adipose tissue produces IL-18 and thereby contributes to systemic IL-18 concentrations. This finding supports the concepts that adipocytes behave as primitive immune cells and that IL-18 may mediate some of the detrimental complications of obesity such as cardiovascular disease and type 2 diabetes.

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Crossref · 10.1530/eje.1.01897

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Authors
Skurk, T., Kolb, H., Müller-Scholze, S., Röhrig, K., Hauner, H., & Herder, C.
Affiliations
  • Technical University of Munich (DE)
  • Deutsches Diabetes-Zentrum e.V. (DE)
Corresponding author
Herder, Christian
Venue
European Journal of Endocrinology
Published
2005-06
Volume
152
Issue
6
Pages
863-868
ISSN
  • 0804-4643 (ISSN-L)
  • 1479-683X
OpenAlex
W2159226285
Cited by
135
References
32
Citations by year
2025: 1 · 2024: 4 · 2023: 1 · 2022: 6 · 2020: 2 · 2019: 3 · 2018: 4 · 2017: 6 · 2016: 5 · 2015: 5 · 2014: 7 · 2013: 6 · 2012: 7
FWCI
10.99
Type
journal article
Language
en
Open access
closed
Locations
  • European Journal of Endocrinology (publishedVersion)
  • PubMed (publishedVersion)
  • mediaTUM (Technical University of Munich) (submittedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Disease and Adiposity
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
Keywords
IL-18, adipocytes, adipose tissue, obesity, preadipocytes, adipogenesis, cytokine production, atherosclerosis, cardiovascular disease, type 2 diabetes, innate immunity, omental adipose tissue, subcutaneous adipose tissue
MeSH terms
Adipose Tissue, Adult, Aged, Cell Differentiation, Female, Glycerolphosphate Dehydrogenase, Humans, Immunohistochemistry, Male, Middle Aged, Obesity, RNA, Messenger, Adipocytes, Reverse Transcriptase Polymerase Chain Reaction, Interleukin-18

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