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Histopathological vascular investigation of the peritumoral brain zone of glioblastomas.

Abstract：

:To date, no histopathological vascular investigation focusing on peritumoral brain zone (PBZ) has been reported for glioblastoma. We analyzed 10 newly diagnosed cases of glioblastomas. For these PBZs, histopathological investigation was performed by hematoxylin-eosin (H&E) staining and immunohistochemistry was analyzed for CD31, CD34, Factor VIII, VEGF, VEGFR-1/2, Ki67, p53 and nestin. Although it was difficult to identify PBZ by H&E, Ki67 and p53 staining, there were apparent differences in nestin staining among PBZ, tumor core (TC), and normal zone (NZ). Therefore, in this study, we divided PBZ from TC and NZ by nestin staining. Differences in histological features, microvessel density, expression of VEGF and its receptors were assessed for PBZ, TC and NZ. The microvessel density, as determined by counting CD31, CD34 and VEGF receptors, and VEGF-A expression were lower in PBZ than TC. The expression patterns for CD31, CD34 and VEGF receptors in vessels show dissociation in PBZ. In addition, the vascular characteristics of the PBZ may correlate with findings of radiographic imaging. We provide the first clinicopathological evidence that PBZ exhibits unique angiogenic characteristics. These in situ observations will help to elucidate the mechanisms of tumor recurrence.

journal_name

J Neurooncol

journal_title

Journal of neuro-oncology

authors

Tamura R,Ohara K,Sasaki H,Morimoto Y,Yoshida K,Toda M

doi

10.1007/s11060-017-2648-9

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

233-241

issue

2

eissn

0167-594X

issn

1573-7373

pii

10.1007/s11060-017-2648-9

journal_volume

136

pub_type

杂志文章

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