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Effects of different intensity exercise training on apoptosis-related microRNAs and the targeted proteins in cardiomyocytes / 中国应用生理学杂志
Chinese Journal of Applied Physiology ; (6): 93-96, 2018.
Artículo en Chino | WPRIM | ID: wpr-773795
ABSTRACT
OBJECTIVE@#To detect the levels of miR-1, miR-21 and their targeted proteins in hearts of mice after different exercise training, and discuss potential molecular mechanism.@*METHODS@#Male C57BL/6 mice were randomly divided to 3 groupssedentary (SE), exercise training 1(ET1) and exercise training 2 (ET2). SE did not do any exercise; ET1 undertook swimming training for 8 weeks, once a day, 5 days/week. Swimming 30 min in the 1 week, and the duration was increased 10 min per week to 90 min and maintained in the 7 and 8 week. ET2 performed the same work as ET1 and switched to twice a day by the end of the 5th week. TUNEL assay was applied to test myocardial apoptosis. Western blot and RT-PCR were used to detect proteins and miRs levels respectively.@*RESULTS@#Compared with SE, in ET1, myocardial apoptosis and miR-1 level did not change, but its targeted protein Bcl-2 increased significantly(<0.01). miR-21 and its targeted protein PDCD4 did not change significantly. In ET2, myocardial apoptosis and miR-1 level were decreased significantly(<0.05). Bcl-2 was increased significantly(<0.01). miR-21 also increased significantly (<0.05), but PDCD4 did not decrease significantly.@*CONCLUSIONS@#Exercise training in ET2 other than ET1 could down-regulate myocardial apoptosis. Alterations of miR-1 and Bcl-2 may be responsible for this cardioprotection. PDCD4 is not sensitive to exercise training, it is likely that miR-21 and other targeted proteins participate in exercise-regulative apoptosis.
Asunto(s)

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Patología / Condicionamiento Físico Animal / Distribución Aleatoria / Proteínas de Unión al ARN / Apoptosis / Proteínas Proto-Oncogénicas c-bcl-2 / Biología Celular / Miocitos Cardíacos / MicroARNs / Proteínas Reguladoras de la Apoptosis Límite: Animales Idioma: Chino Revista: Chinese Journal of Applied Physiology Año: 2018 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Asunto principal: Patología / Condicionamiento Físico Animal / Distribución Aleatoria / Proteínas de Unión al ARN / Apoptosis / Proteínas Proto-Oncogénicas c-bcl-2 / Biología Celular / Miocitos Cardíacos / MicroARNs / Proteínas Reguladoras de la Apoptosis Límite: Animales Idioma: Chino Revista: Chinese Journal of Applied Physiology Año: 2018 Tipo del documento: Artículo