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Related Concept Videos

Mitochondria01:37

Mitochondria

13.4K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
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Electron Transport Chain: Complex I and II01:46

Electron Transport Chain: Complex I and II

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The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
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Mitochondrial Membranes01:45

Mitochondrial Membranes

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A single mitochondrion is a bean-shaped organelle enclosed by a double-membrane system. The outer membrane of mitochondria is smooth and contains many porins - the integral membrane transporters. Porins enable free diffusion of ions and small uncharged molecules through the outer mitochondrial membrane but limit the transport of molecules larger than 5000 Daltons. Further, the outer mitochondrial membrane forms a unique structure called membrane contact sites with other subcellular organelles,...
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Mitochondrial Membranes01:45

Mitochondrial Membranes

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Regulation of Angiogenesis and Blood Supply01:24

Regulation of Angiogenesis and Blood Supply

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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...
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The Inner Mitochondrial Membrane01:28

The Inner Mitochondrial Membrane

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The inner mitochondrial membrane is the primary site of ATP synthesis. The inner membrane domain that forms a smooth layer adjacent to the outer membrane is called the inner boundary membrane. This domain contains membrane transporters that drive metabolites in and out of the mitochondria.  In contrast, the inner membrane network that invaginates into the matrix space is called the cristae membrane. This domain accounts for principle mitochondrial function as it accommodates the protein...
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Evaluation of Bioenergetic Function in Cerebral Vascular Endothelial Cells
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Evaluation of Bioenergetic Function in Cerebral Vascular Endothelial Cells

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Mitochondria, endothelial cell function, and vascular diseases.

Xiaoqiang Tang1, Yu-Xuan Luo1, Hou-Zao Chen1

  • 1State Key Laboratory of Medical Molecular Biology, Department of Biochemistry and Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing, China.

Frontiers in Physiology
|May 17, 2014
PubMed
Summary
This summary is machine-generated.

Mitochondria are vital in endothelial cells, influencing health and disease. This review explores their function, role in vascular conditions, and therapeutic strategies targeting mitochondrial health.

Keywords:
antioxidantsatherosclerosiscaloric restrictiondiabetes mellitusendothelial cellhypertensionmitochondriapulmonary artery hypertension

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Area of Science:

  • Cell Biology
  • Cardiovascular Research
  • Mitochondrial Medicine

Background:

  • Mitochondria are dynamic organelles crucial for eukaryotic cell function.
  • Beyond energy production, they regulate reactive oxygen species, calcium, and cell death.
  • In endothelial cells, mitochondria significantly impact cellular function in health and disease.

Purpose of the Study:

  • To review the fundamental roles of mitochondria in endothelial cells.
  • To discuss the involvement of mitochondria in endothelial dysfunction and various vascular diseases.
  • To explore therapeutic strategies for enhancing mitochondrial function in vascular conditions.

Main Methods:

  • Literature review of mitochondrial functions in endothelial cells.
  • Analysis of the role of mitochondria in endothelial dysfunction.
  • Synthesis of current therapeutic approaches targeting mitochondria.

Main Results:

  • Mitochondria are central to endothelial cell homeostasis and response to stress.
  • Mitochondrial dysfunction is implicated in atherosclerosis, diabetic vascular issues, pulmonary hypertension, and hypertension.
  • Therapeutic strategies like antioxidants and calorie restriction show promise.

Conclusions:

  • Mitochondria play a critical role in endothelial cell function and vascular health.
  • Targeting mitochondrial dysfunction offers potential therapeutic avenues for vascular diseases.
  • Further research into mitochondrial-targeted therapies is warranted.