Cited by 112Adipokines, Inflammation, and Metabolic DiseasesAdipose Tissue and MetabolismCardiovascular Disease and Adiposity

Ageing, adipose tissue, fatty acids and inflammation

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Pararasa, Chathyan, Bailey, Clifford J., Griffiths, Helen R.·2015·Biogerontology

Abstract

A common feature of ageing is the alteration in tissue distribution and composition, with a shift in fat away from lower body and subcutaneous depots to visceral and ectopic sites. Redistribution of adipose tissue towards an ectopic site can have dramatic effects on metabolic function. In skeletal muscle, increased ectopic adiposity is linked to insulin resistance through lipid mediators such as ceramide or DAG, inhibiting the insulin receptor signalling pathway. Additionally, the risk of developing cardiovascular disease is increased with elevated visceral adipose distribution. In ageing, adipose tissue becomes dysfunctional, with the pathway of differentiation of preadipocytes to mature adipocytes becoming impaired; this results in dysfunctional adipocytes less able to store fat and subsequent fat redistribution to ectopic sites. Low grade systemic inflammation is commonly observed in ageing, and may drive the adipose tissue dysfunction, as proinflammatory cytokines are capable of inhibiting adipocyte differentiation. Beyond increased ectopic adiposity, the effect of impaired adipose tissue function is an elevation in systemic free fatty acids (FFA), a common feature of many metabolic disorders. Saturated fatty acids can be regarded as the most detrimental of FFA, being capable of inducing insulin resistance and inflammation through lipid mediators such as ceramide, which can increase risk of developing atherosclerosis. Elevated FFA, in particular saturated fatty acids, maybe a driving factor for both the increased insulin resistance, cardiovascular disease risk and inflammation in older adults.

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Authors
Pararasa, C., Bailey, C. J., & Griffiths, H. R.
Affiliations
Aston University (GB)
Corresponding author
Pararasa, Chathyan
Venue
Biogerontology
Published
2014-11-04
Volume
16
Issue
2
Pages
235-248
ISSN
  • 1389-5729 (ISSN-L)
  • 1573-6768
OpenAlex
W2037497975
Cited by
110
References
158
Citations by year
2026: 6 · 2025: 9 · 2024: 9 · 2023: 10 · 2022: 13 · 2021: 12 · 2020: 11 · 2019: 8 · 2018: 15 · 2017: 7 · 2016: 8 · 2015: 2
FWCI
0.76
Type
journal article
Language
en
Open access
Locations
  • Biogerontology (publishedVersion)
  • PubMed (publishedVersion)
  • Aston Publications Explorer (Aston University) (submittedVersion)
Funders
Biotechnology and Biological Sciences Research Council
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
aging, adipose tissue, ectopic fat, visceral fat, insulin resistance, adipocyte dysfunction, adipogenesis, free fatty acids, saturated fatty acids, ceramide, diacylglycerol, low-grade inflammation, inflammatory cytokines, atherosclerosis, cardiovascular risk, skeletal muscle
MeSH terms
Adipose Tissue, Aging, Animals, Fatty Acids, Humans, Inflammation, Insulin Resistance, Metabolic Diseases, Models, Immunological

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