Abstract：
:Endothelin (ET) is a small peptide that activates astrocyte proliferation, regulates proliferation and migration of embryonic neural precursor cells and stimulates glioblastoma growth. We found that in mouse brain, ET and its receptor B (ETRB) were highly expressed in the subependymal zone (SEZ), an adult neurogenic niche. Cells with ET immunoreactivity (ET+ cells) selectively appeared along the lateral and dorsal walls of the lateral ventricle. They also appeared in the cingular region of the corpus callosum. Subependymal ET+ cells also displayed prominin (PRO), glial fibrillary acidic protein (GFAP) and ETRB immunoreactivities. ET+ processes traversed the ependymal epithelium and approached the ventricular lumen. Ependymal cells only showed ETRB-ir. A small but consistent number of ET+ cells displayed proliferation markers: 5-bromo-2'-deoxyuridine (BrdU) incorporation, and minichromosome maintenance protein 2 (Mcm2). Cortical injury and G-CSF increased subependymal endothelinergic cells and their proliferation markers. Our findings suggest that ET and ETRB might be associated with regulation of adult neural stem cells and their migration through neurogenic and gliogenic pathways.
journal_name
Brain Resjournal_title
Brain researchauthors
Castañeda MM,Cubilla MA,López-Vicchi MM,Suburo AMdoi
10.1016/j.brainres.2010.01.056subject
Has Abstractpub_date
2010-03-19 00:00:00pages
20-30eissn
0006-8993issn
1872-6240pii
S0006-8993(10)00210-6journal_volume
1321pub_type
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