The Role of the Androgen Receptor in Skeletal Muscle and Its Utility as a Target for Restoring Muscle Functions.

Our findings suggest that the downregulation of the androgen signaling, or of the AR expression, is a key node in the pathogenesis of skeletal muscle related to aging, and is thus related to excessive metabolic functions and loss of skeletal muscle. Given the important knowledge gaps with regards to the mechanism by which androgens regulate skeletal mass functions, more research is needed. Other in vitro or in vivo experiments are necessary in order to inform the utility of targeting the non-genomic AR signaling pathways with new selective androgen receptor modulators and to improve the clinical outcome of age-related frailty and sarcopenia.