Para acceder a los documentos con el texto completo, por favor, siga el siguiente enlace: http://hdl.handle.net/2445/146387

Título:	Acetylsalicylic acid prevents intermittent hypoxia-induced vascular remodeling in a murine model of sleep apnea
Autor/a:	Suarez Giron, Monique C.; Castro Grattoni, Anabel; Torres, Marta; Farré Ventura, Ramon; Barbé, Ferran; Sanchez de la Torre, Manuel; Gozal, David; Picado, Cesar; Montserrat, Josep M.; Almendros López, Isaac
Otros autores:	Universitat de Barcelona
Abstract:	Study objectives: Chronic intermittent hypoxia (CIH), a hallmark feature of obstructive sleep apnea (OSA), induces accelerated atherogenesis as well as aorta vascular remodeling. Although the cyclooxygenase (COX) pathway has been proposed to contribute to the cardiovascular consequences of OSA, the potential benefits of a widely employed COX-inhibitor such (acetylsalicylic acid, ASA) on CIH-induced vascular pathology are unknown. Therefore, we hypothesized that a common non-selective COX inhibitor such as ASA would attenuate the aortic remodeling induced by CIH in mice.Methods: 40 wild-type C57/BL6 male mice were randomly allocated to CIH or normoxic exposures (N) and treated with daily doses of ASA or placebo for 6 weeks. At the end of the experiments, intima-media thickness (IMT), elastin disorganization (ED), elastin fragmentation (EF), length between fragmented fiber endpoints (LFF), aortic wall collagen abundance (AC) and mucoid deposition (MD) were assessed.Results: Compared to N, CIH promoted significant increases in IMT (52.58 +/- 2.82 mu m vs. 46.07 +/- 4.18 m, p < 0.003), ED (25.29 +/- 14.60% vs. 4.74 +/- 5.37%, p < 0.001), EF (5.80 +/- 2.04 vs. 3.06 +/- 0.58, p < 0.001), LFF (0.65 +/- 0.34% vs. 0.14 +/- 0.09%, p < 0.001), AC (3.43 +/- 1.52% vs. 1.67 +/- 0.67%, p < 0.001) and MD (3.40 +/- 2.73 mu m(2) vs. 1.09 +/- 0.72 mu m(2), p < 0.006). ASA treatment mitigated the CIH-induced alterations in IMT: 44.07 +/- 2.73 mu m; ED: 10.57 +/- 12.89%; EF: 4.63 +/- 0.88; LFF: 0.25 +/- 0.17% and AC: 0.90 +/- 0.13% (p < 0.05 for all comparisons).Conclusions: ASA prevents the CIH-induced aortic vascular remodeling, and should therefore be prospectively evaluated as adjuvant treatment in patients with OSA.
Materia(s):	-Malalties cardiovasculars -Síndromes d'apnea del son -Medicaments -Cardiovascular diseases -Sleep apnea syndromes -Drugs
Derechos:	cc-by (c) Suarez Giron, Monique C. et al., 2018 http://creativecommons.org/licenses/by/3.0/es
Tipo de documento:	Artículo Artículo - Versión publicada
Editor:	Frontiers Media
Compartir:

Mostrar el registro completo del ítem