Ricerc@Sapienza

Individual striated muscle fibers communicate in both a paracrine and endocrine fashion and are
also involved in the crosstalk with other tissues and organs such as the adipose tissue, immune
system, liver, pancreas, bones, and brain (Delezie andHandschin, 2018). The striatedmuscle, which
accounts for 40% of bodymass, presents high biosynthetic activity, and extensive vascularization,
features that endorse current thinking that muscle is the largest endocrine system of the body

The Janus kinase (JAK)/signal transducer and activator of transcription (STAT) pathway is a key intracellular mediator of a variety of metabolically relevant hormones and cytokines, including the interleukin-6 (IL-6) family of cytokines. The JAK/STAT pathway transmits extracellular signals to the nucleus, leading to the transcription of genes involved in multiple pleiotropic biological activities. The JAK/STAT pathway has been reported to be required for the homeostasis of different tissues and organs, where it is required for normal homeostasis.