Fluorescence automatic cell sorter and immunohistochemical investigation of CD68-positive cells in meningioma.

Abstract:

:Infiltration of brain neoplasms by mononuclear cells including monocytes/macrophages has attracted little attention since they have marked morphological heterogeneity. Twenty-seven meningiomas were studied by anti-CD68 antibody-gated flow cytometry and by immunohistochemical analysis using the anti-CD68 antibodies. Flow cytometric analysis divided cells contained within tumor tissues into CD68-positive and -negative cells. In addition, eight gliomas, eight metastatic brain tumor, and 12 pituitary adenomas were investigated in the same way to compare meningiomas. The mean contents of CD68-positive cells were 24.0 +/- 3.7% in meningiomas, 4.4 +/- 1.4% in gliomas, 9.5 +/- 3.9% in metastatic brain tumors, and 4.5 +/- 1.8% in pituitary adenomas. Immunohistochemically, CD68-positive cells showed significant heterogeneity and were detected as round, rod-shaped, ameboid and ramified cells in meningiomas. Although the infiltrated mononuclear cells in gliomas have been investigated to some degree and showed that they express cytokines and/or growth factors, these infiltrated cells in meningioma have barely been studied. The CD68-positive cells detected in this study are likely to be monocytes, macrophages and microglias, and are presumed to be in various functional stages and to play important roles in growth regulation in meningioma.

journal_name

Clin Neurol Neurosurg

authors

Asai J,Suzuki R,Fujimoto T,Suzuki T,Nakagawa N,Nagashima G,Miyo T,Hokaku H,Takei A

doi

10.1016/s0303-8467(99)00052-9

keywords:

subject

Has Abstract

pub_date

1999-12-01 00:00:00

pages

229-34

issue

4

eissn

0303-8467

issn

1872-6968

pii

S0303846799000529

journal_volume

101

pub_type

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