Abstract
Diabetes mellitus (DM) is a main risk factor for diastolic dysfunction (DD) and heart failure with preserved ejection fraction. High-fat diet (HFD) mice presented with diabetes mellitus, DD, higher cardiac interleukin (IL)-1β levels, and proinflammatory cardiac macrophage accumulation. DD was significantly ameliorated by suppressing IL-1β signaling or depleting macrophages. Mice with macrophages unable to adopt a proinflammatory phenotype were low in cardiac IL-1β levels and were resistant to HFD-induced DD. IL-1β enhanced mitochondrial reactive oxygen species (mitoROS) in cardiomyocytes, and scavenging mitoROS improved HFD-induced DD. In conclusion, macrophage-mediated inflammation contributed to HFD-associated DD through IL-1β and mitoROS production.
Original language | English (US) |
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Pages (from-to) | 174-185 |
Number of pages | 12 |
Journal | JACC: Basic to Translational Science |
Volume | 8 |
Issue number | 2 |
DOIs | |
State | Published - Feb 2023 |
Bibliographical note
Funding Information:The authors thank D. Dicky for the assistance on FABP4 mice breeding and maintenance.
Publisher Copyright:
© 2023 The Authors
Keywords
- HFpEF
- IL-1β
- diabetes
- diastolic dysfunction
- inflammation
- macrophage
- mitochondria
PubMed: MeSH publication types
- Journal Article