Journal
DIABETES OBESITY & METABOLISM
Volume 15, Issue -, Pages 152-158Publisher
WILEY
DOI: 10.1111/dom.12168
Keywords
diabetes; fatty acid; inflammation; innate immunity; macrophage
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Funding
- Takeda Science Foundation
- Mochida Memorial Foundation for Medical and Pharmaceutical Research
- Tokyo Biomedical Research Foundation
- SENSHIN Medical Research Foundation
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Type 2 diabetes (T2D) is characterized by insulin resistance and impaired insulin secretion from pancreatic beta-cells. Inflammatory cytokines, including tumour necrosis factor-alpha (TNF-alpha), have been shown to promote insulin resistance, and altered expression of cytokines (adipokines) in obese adipose tissue is thought to be an important link between obesity and insulin resistance. It is also becoming clear that inflammation plays a key role in the development of beta-cell dysfunction. Inflammatory changes, including accumulation of macrophages, have been documented in T2D islets. Moreover, therapeutic inhibition of interleukin-1 beta (IL-1 beta) ameliorates beta-cell dysfunction in humans. This review summarizes current understanding of the molecular mechanisms underlying inflammation within islets and its relation to beta-cell dysfunction in T2D. A particular focus is on the physiological and pathological functions of macrophages within islets.
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