Key result
Aortic stenosis was associated with tissue remodelling and decreased speed of sound after protease digestion, whereas aortic regurgitation was characterized by static chemical alterations.
Why the study?
What are the structural and histochemical differences between aortic stenosis, aortic regurgitation, and normal aortic valves in elderly patients?
Population
Aortic valves from elderly patients with aortic stenosis (AS), aortic regurgitation (AR), and normal valves
Comparison
Aortic stenosis and aortic regurgitation vs Normal aortic valves
Design
Cross-sectional
Authors
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Supports distinct mechanisms in AS versus AR; hypothesis-generating and requires prospective validation before clinical translation.
Observational
What are the structural and histochemical differences between aortic stenosis, aortic regurgitation, and normal aortic valves in elderly patients?
Tissue remodelling associated with damage and repair drives aortic stenosis pathogenesis, whereas static chemical alterations with slow collagen turnover induce aortic regurgitation.
Miura et al. (2016) conducted an observational in Aortic stenosis and aortic regurgitation. Aortic stenosis and aortic regurgitation vs. Normal valves was evaluated on Mechanical and biochemical alterations (speed of sound, collagen type, advanced glycation end-products). Aortic stenosis was associated with tissue remodelling and decreased speed of sound after protease digestion, whereas aortic regurgitation was characterized by static chemical alterations.
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