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Related Concept Videos

Peroxisomes01:24

Peroxisomes

Peroxisomes are specialized organelles present in fungi, plant, and animal cells. It can vary in number, size, morphology, and activity depending on the type of tissue and the nutritional state of the cell. For example, cells with active lipid metabolism, such as adipocytes, neurons, and hepatocytes, have more peroxisomes than other cells in the body. Besides their primary role in breaking down complex organic molecules, peroxisomes can also synthesize specific macromolecules and participate in...
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Coronary Artery Disease II: Pathophysiology

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Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits.  Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl hydroxylase and factor...
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Analysis of Oxidative Stress in Zebrafish Embryos
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Analysis of Oxidative Stress in Zebrafish Embryos

Published on: July 7, 2014

Oxidative stress impairs endothelial progenitor cell function.

Jamie Case1, David A Ingram, Laura S Haneline

  • 1Department of Pediatrics, Herman B Wells Center for Pediatric Research, Indianapolis, Indiana 46202, USA.

Antioxidants & Redox Signaling
|July 17, 2008
PubMed
Summary
This summary is machine-generated.

Endothelial progenitor cells (EPCs) are crucial for cardiovascular health and vascular regeneration. Understanding their response to oxidative stress is key to preventing cardiovascular diseases.

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Area of Science:

  • Cardiovascular Biology
  • Cellular Redox Biology
  • Regenerative Medicine

Background:

  • Endothelial progenitor cells (EPCs) identified in 1997 are vital for vascular health.
  • EPCs serve as biomarkers for cardiovascular disease risk and potential cell therapeutics.
  • Oxidative stress impacts EPC function during vascular injury and regeneration.

Purpose of the Study:

  • To review techniques for defining and isolating EPCs.
  • To explore genetic insights into redox control in EPC biology.
  • To understand EPC responses to oxidant stress in cardiovascular health and disease.

Main Methods:

  • Review of cell and flow-cytometric techniques for EPC isolation.
  • Analysis of human and mouse genetic data on redox regulation.
  • Synthesis of current research on EPCs and oxidative stress.

Main Results:

  • EPCs play a critical role in maintaining cardiovascular system integrity.
  • Redox regulation is central to EPC biology and function.
  • Dysfunctional redox control in EPCs contributes to human diseases.

Conclusions:

  • EPCs are key players in cardiovascular homeostasis and repair.
  • Understanding EPC redox biology is essential for therapeutic strategies.
  • Perturbations in EPC redox control are linked to cardiovascular pathologies.