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Isolation and Analysis of Aortic Arch and Root Lesions in an Atherosclerotic Mouse Model
Published on: February 14, 2025
Regular exercise or changing diet does not influence aortic valve disease progression in LDLR deficient mice
Florian Schlotter1, Yasuharu Matsumoto, Norman Mangner
1University of Leipzig-Heart Center Leipzig, Department of Internal Medicine/Cardiology, Leipzig, Germany.
Plos One
|May 19, 2012
Summary
Exercise training and diet changes do not reverse established calcific aortic valve disease (CAVD) in mice. Once CAVD begins, interventions like exercise or dietary modification show no effect on its progression.
Area of Science:
- Cardiovascular Research
- Atherosclerosis and Valve Disease
- Exercise Physiology
Background:
- Calcific aortic valve disease (CAVD) shares similarities with atherosclerosis.
- Previous research showed exercise training (ET) prevents CAVD in LDL-receptor deficient (LDLR(-/-)) mice as primary prevention.
Purpose of the Study:
- To investigate the impact of exercise training on the progression of established CAVD.
- To evaluate secondary prevention strategies for CAVD in LDLR(-/-) mice.
Main Methods:
- Sixty-four LDLR(-/-) mice were fed a high-cholesterol diet to induce aortic valve sclerosis.
- Mice were divided into three groups: continued high-cholesterol diet, high-cholesterol diet with daily exercise, or normal chow.
- Aortic valve thickness, endothelial cell layer integrity, and inflammatory/fibroblastic/osteoblastic markers were analyzed after 16 weeks.
Main Results:
- No significant differences in aortic valve thickness were observed between the control, exercise, and diet-change groups.
- Endothelial cell layer disruption was consistent across all groups.
- Expression of inflammatory, fibroblastic, and osteoblastic markers did not differ among the groups.
Conclusions:
- Exercise training and dietary changes do not attenuate the progression of established calcific aortic valve disease.
- Once CAVD initiation occurs, secondary prevention through these interventions is ineffective in mouse models.
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