Schwann cells


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Related to Schwann cells: schwannoma, multiple sclerosis

Schwann cells

(shwahn),
cells of ectodermal (neural crest) origin that compose a continuous envelope around each nerve fiber of peripheral nerves; such cells are comparable with the oligodendroglia cells of brain and spinal cord; like the latter, they may form membranous expansions that wind around axons and thus form the axon's myelin sheath.

Schwann cells

(shwahn selz)
Cells of ectodermal (neural crest) origin that compose a continuous envelope around each nerve fiber of peripheral nerves.
Synonym(s): neurilemma cells, neurolemma cells.

Schwann,

Theodor, German histologist and physiologist, 1810-1882.
Schwann cell unit - a single Schwann cell and all of the axons lying in troughs indenting its surface.
Schwann cells - cells of ectodermal (neural crest) origin that compose a continuous envelope around each nerve fiber of peripheral nerves. Synonym(s): neurilemma cells
Schwann tumor
Schwann white substance - the lipid material present in the myelin sheath of nerve fibers; the medulla of bones and other organs.
schwannoma - Synonym(s): neurilemoma; neuroschwannoma
sheath of Schwann - a cell that enfolds one or more axons of the peripheral nervous system. Synonym(s): neurilemma

Schwann cells

see Schwann cell.
References in periodicals archive ?
Protein Kinase A-Induced Phosphorylation of the p65 Subunit of Nuclear Factor - B promotes schwann cell differentiation into a myelinating phenotype.
The scientists wrote in the journal Development: "The next step is to determine, for example in animal models of peripheral nerve injury, whether grafts of these Schwann cells are conducive to nerve repair.
The cells eventually become undifferentiated stem cell-type cells in which Schwann cell lineage genes are downregulated and mesoderm development genes are upregulated, explains Michael Wegner.
Schwann cells harbor the somatic NF1 mutation in neurofibromas: evidence of two different Schwann cell subpopulations.
Schwann cells wrap themselves around nerve fibers forming a white, wispy layer called myelin.
Histologically they are composed of Schwann cells, nerve fibers, fibroblasts and collagen.
Kamada et al (54) demonstrated that transplantation of Schwann cells derived from bone marrow stromal cells (BMSC-SCs) promotes axonal regeneration of lesioned spinal cord, resulting in recovery of hind limb function in rats.
Cell or tissue grafts, such as Schwann cells, olfactory ensheathing glia, or olfactory lamina propria, placed in the vicinity of a spinal lesion can also induce increases in 5-HT-containing terminals [68-69].
Neurilemomas are encapsulated nerve sheath tumors that arise from the Schwann cells of myelin sheaths.
Following the presentation of bacterial or viral epitopes by macrophages, T cells become activated and penetrate the endoneurium, where they engage epitopes on abaxonal Schwann cells, thereby triggering a cytokine cascade [3].
Gastrointestinal granular cell tumors, a benign neural tumor thought to arise from Schwann cells, can occur in several areas, including the gastrointestinal tract.