Abstract
Skeletal muscle maintains an adequate volume that is commensurate with its surrounding environment. Although intracellular signaling molecules and pathways underlying the regulation of protein synthesis/degradation and subsequent muscle hypertrophy/atrophy are well studied, upstream regulators are largely unknown. In this review, we summarize the recent advances relating to the role of Ca2+ signaling as an upstream regulator of intracellular signaling pathways that regulate muscle plasticity, suggesting a new therapeutic target to control muscle mass.
