DEC1 expression in 1p-aberrant oligodendroglial neoplasms.

Abstract:

BACKGROUND:Expression of hypoxia-related tissue factors in 1p-aberrant oligodendroglial neoplasms diminishes patient outcome. Differentiated embryo-chondrocyte expressed gene 1 (DEC1) has been described as novel hypoxia-related tissue factor. In our study, we assessed the expression of DEC1 in 1p aberrant oligodendroglial neoplasms and its association with necrosis and expression of hypoxia-inducible factor 1alpha (HIF-1alpha), carbonic anhydrase-9 (CA9), and vascular endothelial growth factor-mRNA (VEGF). MATERIALS AND METHODS:44 primary and 16 recurrent oligodendroglial neoplasms with 1p-aberrations were investigated immunohistochemically for the expression of DEC1, HIF-1alpha, and CA9. Expression of VEGF was investigated using in situ hybridization. DEC1 expression was correlated with necrosis and with expression of HIF-1alpha, CA9, and VEGF. RESULTS:DEC1 was expressed in tumor cell nuclei, and occasionally in nuclei of endothelial cells, and glial and neuronal cells of surrounding brain tissue. High expression (>10% of tumor cells immunolabeled) of DEC1 was found in 56 cases, low expression (<10% of tumor cells immunolabeled) was found in 3 cases. In 1 case no expression of DEC1 was evident. DEC1 expression showed no topographical association with necrosis or expression of HIF-1alpha, CA9, or VEGF. CONCLUSION:DEC1 expression is found in the majority of 1p-aberrant oligodendroglial neoplasms and does not correlate with necrosis or expression of HIF-1alpha, CA9, VEGF. Thus, immunohistochemical analysis of DEC1 expression is in our hands not suitable for detection of tissue hypoxia in this type of primary brain tumor.

journal_name

Histol Histopathol

authors

Preusser M,Birner P,Ambros IM,Ambros PF,Budka H,Harris AL,Hainfellner JA

doi

10.14670/HH-20.1173

subject

Has Abstract

pub_date

2005-10-01 00:00:00

pages

1173-7

issue

4

eissn

0213-3911

issn

1699-5848

journal_volume

20

pub_type

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