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A Flow Cytometry-based Assay for Measuring Mitochondrial Membrane Potential in Cardiac Myocytes After Hypoxia/Reoxygenation
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Mitochondrial Dysfunction and Inflammaging in Heart Failure: Novel Roles of CYP-Derived Epoxylipids

Hedieh Keshavarz-Bahaghighat1, Ahmed M Darwesh1, Deanna K Sosnowski1

  • 1Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, Edmonton, AB T6G 2E1, Canada.

Cells
|July 2, 2020
PubMed

Insights

Aging hearts suffer from declining mitochondrial function and inflammaging, increasing cardiovascular disease risk. N-3 and N-6 polyunsaturated fatty acids (PUFA) metabolites may protect mitochondria and combat age-related heart issues.

Area of Science:

  • Cardiovascular Science
  • Aging Biology
  • Mitochondrial Medicine

Background:

  • Aging leads to cardiac structural and functional decline, increasing cardiovascular disease (CVD) risk in elderly individuals.
  • Chronic low-grade inflammation, termed 'inflammaging,' is a key factor in cardiac aging and age-related CVD.
  • Declining mitochondrial function is a hallmark of the aging heart, contributing to heart failure and cellular stress.

Purpose of the Study:

  • To explore the mechanisms linking mitochondrial dysfunction, inflammaging, and heart failure in aging.
  • To investigate the potential protective roles of N-3 and N-6 polyunsaturated fatty acids (PUFA) and their metabolites (epoxylipids) in modulating these processes.

Main Methods:

  • Review of current literature on aging, cardiac function, inflammation, and mitochondrial biology.
  • Analysis of the role of NLRP-3 inflammasomes in age-related CVD.
  • Examination of evidence for CYP450 epoxygenase metabolites of PUFA in immune modulation and mitochondrial protection.

Main Results:

  • Mitochondrial dysfunction exacerbates cellular stress and activates NLRP-3 inflammasomes, contributing to inflammaging and CVD.
  • Epoxylipids derived from N-3 and N-6 PUFA show promise in modulating immune responses and protecting mitochondria.

Conclusions:

  • N-3 and N-6 PUFA metabolites represent a potential therapeutic avenue for mitigating age-related cardiac decline.
  • Further research into epoxylipids could uncover novel strategies for preventing and treating heart failure in aging populations.

Keywords:
N-3 and N-6 polyunsaturated fatty acidsagingepoxylipidsheart failureinflammasomemitochondria

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