Biciliated ependymal cell proliferation contributes to spinal cord growth
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Biciliated ependymal cell proliferation contributes to spinal cord growth

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Biciliated ependymal cell proliferation contributes to spinal cord growth

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dc.contributor.author Alfaro Cervelló, Clara es_ES
dc.contributor.author Soriano-Navarro, Mario es_ES
dc.contributor.author Mirzadeh, Zaman es_ES
dc.contributor.author Alvarez-Buylla, Arturo es_ES
dc.contributor.author García Verdugo, José Manuel es_ES
dc.date.accessioned 2015-06-19T10:17:59Z
dc.date.available 2015-06-19T10:17:59Z
dc.date.issued 2012 es_ES
dc.identifier.uri http://hdl.handle.net/10550/44536
dc.description.abstract Two neurogenic regions have been described in the adult brain, the lateral ventricle subventricular zone and the dentate gyrus subgranular zone. It has been suggested that neural stem cells also line the central canal of the adult spinal cord. Using transmission and scanning electron microscopy and immunostaining, we describe here the organization and cell types of the central canal epithelium in adult mice. The identity of dividing cells was determined by three-dimensional ultrastructural reconstructions of [3H]thymidine-labeled cells and confocal analysis of bromodeoxyuridine labeling. The most common cell type lining the central canal had two long motile (9+2) cilia and was vimentin+, CD24+, FoxJ1+, Sox2+ and CD133+, but nestin- and glial fibrillary acidic protein (GFAP)-. These biciliated ependymal cells of the central canal (Ecc) resembled E2 cells of the lateral ventricles, but their basal bodies were different from that of E2 or E1 cells. Interestingly, we frequently found Ecc cells with two nuclei and four cilia, suggesting they are formed by incomplete cytokinesis or cell fusion. GFAP+ astrocytes with a single cilium and an orthogonally oriented centriole were also observed. The majority of dividing cells corresponded to biciliated Ecc cells. Central canal proliferation was most common during the active period of spinal cord growth. Pairs of labeled Ecc cells were observed within the central canal in adult mice 2.5 weeks post-labeling. Our work suggests that the vast majority of postnatal dividing cells in the central canal are Ecc cells and their proliferation is associated with the growth of the spinal cord. es_ES
dc.source The Journal of comparative neurology Vol. 520 Issue 15: pp. 3528-3552 es_ES
dc.subject central canal es_ES
dc.subject ultrastructure es_ES
dc.subject ependyma es_ES
dc.subject cilia es_ES
dc.title Biciliated ependymal cell proliferation contributes to spinal cord growth es_ES
dc.type info:eu-repo/semantics/article es_ES
dc.identifier.doi 10.1002/cne.23104 es_ES
dc.identifier.idgrec 076903 es_ES

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