Along those lines, it was also recently shown that ROS function as important signaling molecules for muscle hypertrophy in vitro, where it was found that IGF - 1 induced hypertrophy
of myotubes in culture is suppressed by antioxidants (15).
Not exact matches
Within days, the neural stem cells began to make proteins typical
of muscle cells, and even joined with the muscle cells to form
myotubes, tubes
of fused cells that make up the bulk
of living muscle.
In vitro experiments in myogenic cells initially suggested that IL - 15 was an anabolic factor for skeletal muscle, able to stimulate the accumulation
of contractile protein in differentiated
myotubes (8 — 10).
Post-transcriptional regulation
of autophagy in C2C12
myotubes following starvation and nutrient restoration.
However, further investigations are needed to clarify whether previous metabolic influences at the level
of quiescent satellite cells in vivo can induce irreversible metabolic changes in cultured human
myotubes.
In this context, cultures
of primary human
myotubes offer excellent material for performing studies under standardized conditions.
Our dose - response curve at chronic high insulin levels allowed us to differentiate between a primary defect (probably genetic) and the induction
of secondary insulin resistance in
myotube cultures due to hyperinsulinemia.
Our «biased» profiling is based on an in vitro model
of mouse terminally differentiated
myotubes, induced to re-enter the cell cycle by the E1A oncogene (23).
Overexpression
of FOXO3A in mouse
myotubes also significantly up - regulates MAFbx expression (49).
Amino acids and insulin act additively to regulate components
of the ubiquitin - proteasome pathway in C2C12
myotubes