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Atherosclerosis is a progressive disorder characterized by the buildup of plaques on the arterial inner wall, causing them to narrow and harden over time. These plaques comprise lipids, calcium, blood components, carbohydrates, and fibrous tissue. The process primarily affects the intima of large and medium-sized arteries, reducing blood flow in any artery.Etiology and risk factorsThe cause of atherosclerosis is multifactorial, involving a complex interplay among endothelial injury, lipid...
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Related Experiment Video

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A Human Ex Vivo Atherosclerotic Plaque Model to Study Lesion Biology
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From Mitochondria to Atherosclerosis: The Inflammation Path.

Juan M Suárez-Rivero1, Carmen J Pastor-Maldonado1, Suleva Povea-Cabello1

  • 1Andalusian Center for Developmental Biology (CABD-CSIC-Pablo de Olavide University) and Center for Biomedical Network Research on Rare Diseases, Carlos III Health Institute, 41013 Seville, Spain.

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Mitochondria play a crucial role in atherosclerosis by influencing inflammation. Mitochondrial dysfunction promotes this chronic inflammatory disease, highlighting potential therapeutic targets.

Keywords:
NLRP3atherosclerosisinflammasomeinflammationmitochondriareactive oxygen species

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Area of Science:

  • Cardiovascular Biology
  • Immunology
  • Mitochondrial Medicine

Background:

  • Inflammation is vital for innate immunity but also drives chronic diseases like atherosclerosis.
  • Atherosclerosis involves arterial wall inflammation, plaque instability, and thrombosis, leading to ischemic events.
  • Mitochondria, cellular powerhouses, regulate inflammation via reactive oxygen species (ROS) and danger signals.

Purpose of the Study:

  • To review the critical role of mitochondria in atherosclerosis.
  • To elucidate the link between mitochondrial function and inflammation in atheroma progression.
  • To identify potential therapeutic strategies targeting mitochondrial pathways.

Main Methods:

  • Literature review focusing on mitochondrial roles in inflammation and atherosclerosis.
  • Analysis of mechanisms involving mitochondrial reactive oxygen species (ROS) production.
  • Examination of mitochondrial dynamics and component release as danger signals.

Main Results:

  • Mitochondrial dysfunction exacerbates atherosclerosis by increasing ROS production.
  • Altered mitochondrial dynamics and energy supply contribute to disease initiation and progression.
  • Released mitochondrial components act as danger signals, promoting innate immune responses in atherosclerosis.

Conclusions:

  • Mitochondrial dysfunction is a key driver of inflammation in atherosclerosis.
  • Understanding mitochondrial pathways offers novel therapeutic avenues for treating atherosclerosis.
  • Targeting mitochondrial-based inflammation may provide complementary treatment strategies.