Cited by 36Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismDiet, Metabolism, and Disease

Long-term exposure to a high-fat diet results in the development of glucose intolerance and insulin resistance in interleukin-1 receptor I-deficient mice

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McGillicuddy, Fiona C., Reynolds, Clare M., Finucane, Orla, Coleman, Eilish, Harford, Karen A., Grant, Christine, Sergi, Domenico, Williams, Lynda M. +2 more·2013·American Journal of Physiology-Endocrinology and Metabolism

Abstract

Emerging evidence has demonstrated that saturated fatty acids prime pro-IL-1β production and inflammasome-mediated IL-1β activation is critical in obesity-associated insulin resistance (IR). Nonetheless, IL-1 receptor I-deficient (IL-1RI−/−) mice develop mature-onset obesity despite consuming a low-fat diet (LFD). With this apparent contradiction, the present study evaluated whether IL-1RI−/− mice were protected against long-term (6 mo) high-fat diet (HFD)-induced IR. Male wild-type and IL-1RI−/− mice were fed LFD or HFD for 3 or 6 mo, and glucose and insulin tolerance tests were performed. Adipose insulin sensitivity, cytokine profiles, and adipocyte morphology were assessed. The adipogenic potential of stromal vascular fraction was determined. Hepatic lipid accumulation and insulin sensitivity were characterized. IL-1RI−/− mice developed glucose intolerance and IR after 6 mo HFD compared with 3 mo HFD, coincident with enhanced weight gain, hyperinsulinemia, and hyperleptinemia. The aggravated IR phenotype was associated with loss of adipose functionality, switch from adipocyte hyperplasia to hypertrophy and hepatosteatosis. Induction of adipogenic genes was reduced in IL-1RI−/− preadipocytes after 6 mo HFD compared with 3 mo HFD. Obese LFD-IL-1RI−/− mice exhibited preserved metabolic health. IL-1RI−/− mice develop glucose intolerance and IR after 6 mo HFD intervention. While mature-onset obesity is evident in LFD-IL-1RI−/− mice, the additional metabolic insult of HFD was required to drive adipose inflammation and systemic IR. These findings indicate an important interaction between dietary fat and IL-1, relevant to optimal metabolic health.

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Crossref · 10.1152/ajpendo.00297.2013

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  • Pro-inflammatory cytokines such as interleukin (IL)-1β inhibit adipogenesis, or the ability of pre-adipocytes to mature into functional lipid-enriched adipocytes.

    “Pro‐inflammatory cytokines such as interleukin (IL)‐1β inhibit adipogenesis, or the ability of pre‐adipocytes to mature into functional lipid‐enriched adipocytes.[ 33 ]”

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Authors
McGillicuddy, F. C., Reynolds, C. M., Finucane, O., Coleman, E., Harford, K. A., Grant, C., Sergi, D., Williams, L. M., Mills, K. H. G., & Roche, H. M.
Affiliations
  • University College Dublin (IE)
  • University of Aberdeen (GB)
  • Trinity College Dublin (IE)
Corresponding author
Roche, Helen M.
Venue
American Journal of Physiology-Endocrinology and Metabolism
Published
2013-10-01
Volume
305
Issue
7
Pages
E834-E844
ISSN
  • 0193-1849 (ISSN-L)
  • 1522-1555
OpenAlex
W2026796986
Cited by
36
References
48
Citations by year
2026: 1 · 2025: 2 · 2024: 4 · 2023: 1 · 2022: 2 · 2021: 2 · 2020: 6 · 2019: 4 · 2018: 3 · 2017: 2 · 2016: 3 · 2015: 3 · 2014: 1 · 2013: 2
FWCI
2.19
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • American Journal of Physiology-Endocrinology and Metabolism (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Institutional Research Information System University of Ferrara (University of Ferrara) (submittedVersion, cc-by)
Funders
  • Wellcome Trust (097311/Z/11/Z)
  • Science Foundation Ireland
Topics
  • Health Sciences › Medicine › Epidemiology › Adipokines, Inflammation, and Metabolic Diseases
  • Health Sciences › Medicine › Physiology › Adipose Tissue and Metabolism
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Diet, Metabolism, and Disease
Keywords
high-fat diet, insulin resistance, impaired glucose tolerance, obesity, adipose tissue inflammation, adipocyte hypertrophy, adipocyte hyperplasia, hepatic steatosis, hepatic lipid accumulation, adipogenesis, pro-IL-1β, inflammasome, leptin, hyperinsulinemia, dietary fat
MeSH terms
Adipose Tissue, Animals, Dietary Fats, Fatty Liver, Glucose Tolerance Test, Inflammation, Insulin, Insulin Resistance, Male, Glucose Intolerance, Mice, Knockout, Leptin, Adiposity, Mice, Receptors, Interleukin-1 Type I, Diet, High-Fat

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