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Nestin and WT1 expression in small-sized vasa vasorum from human normal arteries

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dc.contributor.authorVasuri, Francesco
dc.contributor.authorFittipaldi, Silvia
dc.contributor.authorBuzzi, Mariana
dc.contributor.authorDegiovanni, Alessio
dc.contributor.authorStella, Aandrea
dc.contributor.authorD’Errico-Grigioni, Antonia
dc.contributor.authorPasquinelli, Gianandrea
dc.date.accessioned2017-09-11T14:25:13Z
dc.date.available2017-09-11T14:25:13Z
dc.date.issued2012
dc.description.abstractIntroduction. Vasa vasorum (VV) neovasculogenic potential is now widely accepted, and possibly related to the presence of progenitor cells. We studied the morphology of VV in healthy arteries and their immunohistochemical (IHC) expression of Nestin and WT1, two markers of endothelial progenitor cells. Materials and Methods. Twenty arteries from 16 multiorgan donors were analyzed; IHC was performed manually (CD34, CD31, Nestin) or automatically (WT1). Microvessel positivity “density” for each antibody was calculated dividing vascular adventitia in 1-mm2 fields with an ocular micrometer. Double immunofluorescence was used to investigate Nestin and WT1 co-localization in VV. Results. The mean positivity “densities” for CD31, CD34, Nestin and WT1 were 13.63, 12.20, 8.90 and 7.98/mm2 respectively. Mean Nestin/CD31 and WT1/CD31 ratios were 0.69 and 0.63 respectively. VV <50 µm in diameter showed a higher percentage of Nestin/WT1-positive cells than larger ones, especially in “hot spots”, characterized by several small-sized arteriolar VV, often together with nerva vasorum. Immunofluorescence indentified Nestin and WT1 in the same endothelial cells. WT1 nuclear expression was mainly seen in <50 µm VV. Discussion. We describe Nestin and WT1 in adult VV, especially <50 µm and gathered in “hot spots”. The nuclear localization of WT1 could express an increasing transcriptional activity in progenitor-committed Nestin-positive cells. The “hot spot” could therefore represent a valid model for the vasculogenic niche in normal arteries and could potentially represent the main source for neovasculogenesis during atherosclerosises
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dc.format.extent8es
dc.identifier.citationHistology and histopathology, Vol. 27, nº 9 (2012)
dc.identifier.issn1699-5848
dc.identifier.issn0213-3911
dc.identifier.urihttp://hdl.handle.net/10201/54142
dc.languageenges
dc.publisherF. Hernández y Juan F. Madrid. Universidad de Murcia. Departamento de Biología Celular e Histologíaes
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectNestines
dc.subjectVasa vasorumes
dc.subject.otherCDU::6 - Ciencias aplicadas::61 - Medicina::616 - Patología. Medicina clínica. Oncología::616.1 - Patología del sistema circulatorio, de los vasos sanguíneos. Transtornos cardiovasculareses
dc.titleNestin and WT1 expression in small-sized vasa vasorum from human normal arterieses
dc.typeinfo:eu-repo/semantics/articlees
dspace.entity.typePublicationes
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Histology and histopathology Vol.27, nº 9 (2012)