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首页> 外文期刊>Medicine and science in sports and exercise >Effects of aerobic training on gene expression in skeletal muscle of elderly men.
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Effects of aerobic training on gene expression in skeletal muscle of elderly men.

机译:有氧运动对老年人骨骼肌基因表达的影响。

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PURPOSE: To analyze the effect of 3 months of training on global gene expression in skeletal muscle of healthy elderly men in order to better characterize the pathways that differentiate the trained from the sedentary state. METHODS: Needle biopsies were obtained from the vastus lateralis of six healthy, sedentary, 68.0 +/- 2.7-yr-old males, before and after 3 months of training at 80% of maximal capacity, that improved peak O2 uptake by 17.8 +/- 4.0% (P = 0.009). RNA extracted from the samples was hybridized to Affymetrix U133A Genechip arrays. RESULTS: Overall, training modified the expression of 397 out of 14,500 genes tested. In the trained state, the expression of genes linked with energy metabolism, protein amino acid dephosphorylation, and heme biosynthesis increased, whereas those linked with ribosome and protein catabolism decreased. CONCLUSION: This set of 397 genes that includes the upregulated energy pathways and the downregulated protein catabolism genes represents the transcriptional response of the skeletal muscle in the trained state. It is highly likely that many of these genes are mediators of the beneficial effects of physical activity on health and fitness.
机译:目的:分析3个月的训练对健康老年男性骨骼肌整体基因表达的影响,以更好地刻画区分训练与久坐状态的途径。方法:在六个月的健康,久坐,68.0 +/- 2.7岁男性的股外侧肌上进行穿刺活检,这三个月的训练前后均以最大容量的80%进行了训练,这使峰值O2吸收提高了17.8 + / -4.0%(P = 0.009)。从样品中提取的RNA与Affymetrix U133A Genechip阵列杂交。结果:总体而言,训练改变了测试的14,500个基因中397个的表达。在训练状态下,与能量代谢,蛋白质氨基酸去磷酸化和血红素生物合成有关的基因表达增加,而与核糖体和蛋白质分解代谢有关的基因表达减少。结论:这组397个基因包括上调的能量途径和下调的蛋白质分解代谢基因,代表了处于训练状态的骨骼肌的转录反应。这些基因中的许多很可能是体育锻炼对健康和健身有益影响的介体。

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