What Are Satellite Cells

A mononuclear undifferentiated cell that is found in skeletal muscle fibers and promotes their growth repair and regeneration.

What are satellite cells.

During development satellite cell derived nerve growth factor ngf is an important determinant for neurite outgrowth from sensory neurons since in the rat neurite outgrowth from neonatal sensory. They can also go into a state of dormancy if the. The stem cells of skeletal muscle known as satellite cells are responsible for muscle fiber growth turnover and regeneration. Evidence for this accumulated over the years until the link between satellite cells and the myoblasts that appear during muscle regeneration was finally established.

Satellite cells are a type of stem cell that when they divide produce either new satellite cells or myoblasts which grow to become muscle cells. Myosatellite cells also known as satellite cells or muscle stem cells are small multipotent cells with very little cytoplasm found in mature muscle. Satellite cells are precursors to skeletal muscle cells able to give rise to satellite cells or differentiated skeletal muscle cells. Satellite glial cells or satellite cells formerly called amphicytes are glial cells that cover the surface of neuron cell bodies in ganglia of the peripheral nervous system thus they are found in sensory sympathetic and parasympathetic ganglia.

Satellite cells indicated by red arrows. Following their discovery in 1961 it was speculated that satellite cells were dormant myoblasts held in reserve until required for skeletal muscle repair. Researchers have yet to determine the specific functions of satellite cells but it is generally assumed that they help regulate and stabilize the environment around ganglion cell bodies. Their role is not fully understood but it is thought they provide nutrient support and protection.

Glial cells that surround some neurons in the peripheral nervous system. Both satellite glial cells sgcs and schwann cells the cells that ensheathe some nerve fibers in the pns are derived from the neural crest of. Any of the cells that envelop the bodies of nerve cells within the peripheral nervous system. They have the potential to provide additional myonuclei to their parent muscle fiber or return to a quiescent.

Satellite cells are specialized glial cells in the sensory dorsal root ganglia ensheathing cell bodies of pseudounipolar sensory ganglion cells. Satellite cells are small flattened cells found in the ganglia of the peripheral nervous system ganglion collection of cell bodies. Satellite cell synonyms satellite cell pronunciation satellite cell translation english dictionary definition of satellite cell. Satellite cells are activated and proliferate in response to stimuli and simplistically have two main fates to repopulate the satellite cell niche or differentiate to regenerate or repair muscle fibers.