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Calcification of Vascular Smooth Muscle Cells and Imaging of Aortic Calcification and Inflammation
Published on: May 31, 2016
Calcification of the human thoracic aorta during aging
1Division of Biochemistry, School of Biology and Biochemistry, Queen's University of Belfast, N. Ireland.
Calcified Tissue International
|April 1, 1994
Summary
Aortic calcification increases with age, particularly in the middle medial layer. This study quantifies calcium accumulation in different aortic layers from youth to old age.
Area of Science:
- Cardiovascular Biology
- Aging Research
- Biomaterials Science
Background:
- Aortic calcification is a common feature of aging.
- Understanding the distribution and progression of calcification is crucial for cardiovascular health.
- Previous studies have not fully detailed calcification rates across distinct aortic layers.
Purpose of the Study:
- To quantify the rate of calcification in human thoracic aorta layers.
- To investigate age-related changes in calcium content within the intima and media.
- To correlate calcification with arterial wall thickness and cholesterol content.
Main Methods:
- Analysis of 58 human thoracic aortae obtained post-mortem.
- Dissection of aortae into intima and three medial layers (inner, middle, outer).
- Measurement of calcium content (micrograms Ca/mg tissue), arterial wall thickness, and cholesterol in each layer from plaque-free regions.
Main Results:
- Intimal calcification increased with age (1.6 to 5.2 micrograms Ca/mg tissue).
- Medial calcification significantly increased with age, both by weight and volume.
- The middle, elastin-rich medial layer showed the most substantial calcium accumulation (1.4 to 49.50 micrograms Ca/mg tissue).
Conclusions:
- Both intimal and medial calcification progress with aging in the thoracic aorta.
- The middle medial layer is a primary site for age-related calcium deposition.
- Findings highlight differential calcification patterns within aortic layers during senescence.
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