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Assessment of Vascular Tone Responsiveness using Isolated Mesenteric Arteries with a Focus on Modulation by Perivascular Adipose Tissues
Published on: June 3, 2019
Endothelial cell senescence and mitochondrial dysfunction in vascular ageing.
Iga Walczak1, Maria Tarnawska2, Klaudia Stawarska1
1Department of Biochemistry, Medical University of Gdansk, Dębinki 1, Gdańsk 80-211, Poland; Department of Experimental Cardiooncology, Medical University of Gdansk, Smoluchowskiego 17, Gdańsk 80-214, Poland.
Ageing impairs endothelial cell metabolism and mitochondrial function, leading to vascular dysfunction. Targeting mitochondrial metabolism offers a promising therapeutic strategy for age-related vascular diseases.
Area of Science:
- Vascular Biology
- Cellular Metabolism
- Mitochondrial Biology
Background:
- Endothelial dysfunction contributes to various diseases.
- Ageing alters endothelial cell metabolism and mitochondrial function, impacting homeostasis.
- Key age-related endothelial changes include reduced nitric oxide, increased oxidative stress, and inflammation.
Purpose of the Study:
- To review how ageing affects endothelial cell metabolism and mitochondrial function.
- To examine the role of cellular senescence in age-related endothelial dysfunction.
- To identify mitochondria-driven metabolic deterioration as a mechanism in vascular ageing.
Main Methods:
- Literature review of endothelial cell bioenergetics.
- Analysis of mitochondrial impairment in ageing.
- Examination of metabolic reprogramming in vascular ageing.
Main Results:
- Ageing causes shifts in endothelial energy production, substrate utilization, and redox signaling.
- Cellular senescence in endothelial cells propagates dysfunction via inflammatory and oxidant signaling.
- Mitochondrial dysfunction in ageing disrupts bioenergetics, increases reactive oxygen species, and fuels inflammation.
Conclusions:
- Mitochondria-driven metabolic deterioration is a key mechanism underlying endothelial ageing.
- Cellular senescence actively accelerates vascular ageing.
- Mitochondrial metabolism represents a potential therapeutic target for age-related vascular dysfunction.
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