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Title: | Cardiovascular benefits of moderate exercise training in Marfan syndrome: Insights from an animal model. |
Author: | Mas-Stachurska, Aleksandra Siegert, Anna-Maria Elisa Batlle, Montserrat Gorbenko del Blanco, Darya Meirelles, Thayna Rubies, Cira Bonorino, Fabio Serra-Peinado, Carla Bijnens, Bart Baudin, Julio Sitges Carreño, Marta Mont Girbau, Lluís Guasch i Casany, Eduard Egea Guri, Gustavo |
Keywords: | Malalties hereditàries Exercici Aneurismes aòrtics Models animals en la investigació Genetic diseases Exercise Aortic aneurysms Animal models in research |
Issue Date: | 25-Sep-2017 |
Abstract: | BACKGROUND: Marfan syndrome (MF) leads to aortic root dilatation and a predisposition to aortic dissection, mitral valve prolapse, and primary and secondary cardiomyopathy. Overall, regular physical exercise is recommended for a healthy lifestyle, but dynamic sports are strongly discouraged in MF patients. Nonetheless, evidence supporting this recommendation is lacking. Therefore, we studied the role of long-term dynamic exercise of moderate intensity on the MF cardiovascular phenotype. METHODS AND RESULTS: In a transgenic mouse model of MF (Fbn1C1039G/+), 4-month-old wild-type and MF mice were subjected to training on a treadmill for 5 months; sedentary littermates served as controls for each group. Aortic and cardiac remodeling was assessed by echocardiography and histology. The 4-month-old MF mice showed aortic root dilatation, elastic lamina rupture, and tunica media fibrosis, as well as cardiac hypertrophy, left ventricular fibrosis, and intramyocardial vessel remodeling. Over the 5-month experimental period, aortic root dilation rate was significantly greater in the sedentary MF group, compared with the wild-type group (∆mm, 0.27±0.07 versus 0.13±0.02, respectively). Exercise significantly blunted the aortic root dilation rate in MF mice compared with sedentary MF littermates (∆mm, 0.10±0.04 versus 0.27±0.07, respectively). However, these 2 groups were indistinguishable by aortic root stiffness, tunica media fibrosis, and elastic lamina ruptures. In MF mice, exercise also produced cardiac hypertrophy regression without changes in left ventricular fibrosis. CONCLUSIONS: Our results in a transgenic mouse model of MF indicate that moderate dynamic exercise mitigates the progression of the MF cardiovascular phenotype. |
Note: | Reproducció del document publicat a: https://doi.org/10.1161/JAHA.117.006438 |
It is part of: | Journal Of The American Heart Association, 2017, vol. 6, num. 9, p. e006438 |
URI: | http://hdl.handle.net/2445/116287 |
Related resource: | https://doi.org/10.1161/JAHA.117.006438 |
ISSN: | 2047-9980 |
Appears in Collections: | Articles publicats en revistes (Medicina) Articles publicats en revistes (IDIBAPS: Institut d'investigacions Biomèdiques August Pi i Sunyer) |
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