Identification of MicroRNAs linked to regulators of muscle protein synthesis and regeneration in young and old skeletal muscle
Zacharewicz, Evelyn, Della Gatta, Paul, Reynolds, John, Garnham, Andrew, Crowley, Tamsyn, Russell, Aaron P. and Lamon, Severine 2014, Identification of MicroRNAs linked to regulators of muscle protein synthesis and regeneration in young and old skeletal muscle, PLoS One, vol. 9, no. 12, Article Number : e114009, pp. 1-25, doi: 10.1371/journal.pone.0114009.
Over the course of ageing there is a natural and progressive loss of skeletal muscle mass. The onset and progression of age-related muscle wasting is associated with an attenuated activation of Akt-mTOR signalling and muscle protein synthesis in response to anabolic stimuli such as resistance exercise. MicroRNAs (miRNAs) are novel and important post-transcriptional regulators of numerous cellular processes. The role of miRNAs in the regulation of muscle protein synthesis following resistance exercise is poorly understood. This study investigated the changes in skeletal muscle miRNA expression following an acute bout of resistance exercise in young and old subjects with a focus on the miRNA species predicted to target Akt-mTOR signalling.
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