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http://www.repositorio.ufop.br/jspui/handle/123456789/10348
Título: | Swim training attenuates the adverse remodeling of LV structural and mechanical properties in the early compensated phase of hypertension. |
Autor(es): | Locatelli, Jamille Paiva, Nívia Carolina Nogueira de Carvalho, Sara Helena Resende Lavorato, Victor Neiva Gomes, Luis Henrique Lobo Silame Castro, Quênia Janaína Tomaz de Guimarães, Andrea Grabe Carneiro, Cláudia Martins Natali, Antônio José Isoldi, Mauro César |
Palavras-chave: | Cardiac remodeling Spontaneously hypertensive rats Cardiomyocytes |
Data do documento: | 2017 |
Referência: | LOCATELLI, J. et al. Swim training attenuates the adverse remodeling of LV structural and mechanical properties in the early compensated phase of hypertension. Life Sciences, v. 187, p. 42-49, out. 2017. Disponível em: <https://www.sciencedirect.com/science/article/pii/S0024320517303983?via%3Dihub>. Acesso em: 05 abr. 2018 |
Resumo: | Aim: Investigate to what extent low-intensity swim training for six weeks counterbalances the adverse remodeling due to the advance of pathological hypertrophy in the left ventricle (LV) structural and mechanical properties in the early compensated phase of hypertension in male SHR. Main methods: Four-month-old male SHR and Wistar rats were randomly divided into Sed (sedentary) and Ex (exercised) groups. The exercised rats were submitted to a swimming protocol (1 h/day, 5 times/week, no additional load) for six weeks. LV tissue and isolated myocytes were used to assess structural and mechanical properties. Myocytes were stimulted at frequencies (F) of 1 and 3 Hz at 37 °C. Key findings: Exercised SHR showed improvement in cardiovascular parameters compared to sedentary SHR (mean arterial pressure: 13.22%; resting HR: 14.28.%). About structural and mechanical properties, swim training induced a decrease in LV myocyte thickness (10.85%), number of inflammatory cells (21.24%); collagen type III (74.23%) and type I (85.6%) fiber areas; amplitude of single myocyte shortening (47% to F1 and 28.46% to F3), timecourses of shortening (16.5% to F1 and 7.55% to F3) and relaxation (15.31% to F3) compared to sedentary SHR. Significance: Six weeks of swim training attenuates the adverse remodeling of LV structural and mechanical properties in the early compensated phase of hypertension in male SHR. |
URI: | http://www.repositorio.ufop.br/handle/123456789/10348 |
Link para o artigo: | https://www.sciencedirect.com/science/article/pii/S0024320517303983?via%3Dihub#! |
ISSN: | 00243205 |
Aparece nas coleções: | DECBI - Artigos publicados em periódicos |
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ARTIGO_SwinTrainingAttenuates.pdf Restricted Access | 927,25 kB | Adobe PDF | Visualizar/Abrir |
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