浸潤能からみた脳腫瘍細胞の動態 : Invasion testによるヒト脳腫瘍87例の検討

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The authors previously reported a new, in vitro technique for determining the invasiveness of four rat neurogenic tumor cell lines. Now this method has been modified and applied to the analysis of the invasiveness of human brain tumors. Eighty-seven tumors, including 61 gliomas, six metastatic brain tumors, 10 meningiomas, four neurinomas, one melanoma, one hemangioblastoma, two craniopharyngiomas, one chemodectoma, and one pituitary adenoma, were studied. Since gliomas were of primary interest, their invasiveness was studied more extensively. Fresh tumor specimens obtained during craniotomy were immediately minced in Dulbecco's modified Eagles's minimum essential medium containing 20% fetal calf serum to obtain fragments of 300-500 μm in size. These tumor fragments and precultured embryonic chick heart fragments were placed together on semisolid agar (0.35%) for 2 hours at 37℃. These fused tissues were then cultured in a gyratory shaker at 100 rpm for 7 days. From hematoxylin-eosin stained dnd immunostained serial sections, the degree of invasiveness was determined according to the "classification ofinvasiveness." Although there were discrepancies between the histologic findings and the degree of invasiveness in 22.5% of high-grade astrocytomas, conventional histological diagnosis was well correlated with invasiveness in almost all low-grade astrocytomas. This in vitro technique appears to be a simple and useful means of evaluating the invasive potential of brain tumors.
日本脳神経外科学会の論文
1988-05-15

浸潤能からみた脳腫瘍細胞の動態 : Invasion testによるヒト脳腫瘍87例の検討

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