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J Korean Neurosurg Soc. 2004 May;35(5):465-471. Korean. Original Article.
Kim SY , Chung SH , Kim HJ , Whang K , Han YP , Hong SK .
Department of Neurosurgery, Wonju College of Medicine, Yonsei University, Wonju, Korea.
Department of Pathology, Wonju College of Medicine, Yonsei University, Wonju, Korea.
Abstract

OBJECTIVE: We report a retrospective investigation of the prognostic value of bcl-2 and bax expression, and Ki-67 proliferative index in 42 astrocytic tumors. METHODS: We classified the astrocytic tumors and reviewed the clinical information and survival time. The sections were taken from surgically resected paraffin-embedded tissue and performed immunohistochemical stains for bcl-2, bax and Ki-67. RESULTS: The immunohistochemical stain for bcl-2 revealed a positivity in only two(4.76%) among forty-two cases. The immunostain for bax was positive in 35 cases(83.3%). However, the correlation between bcl-2 & bax expression and age, sex, tumor location, size, and histologic grade was not found. By Kaplan-Meier analysis, bcl-2 & bax expression and survival time in astrocytic tumors was no significance in log rank test(p>0.05). There were prognostic values between Ki-67 LI and histologic grade and between Ki-67 LI and survival time, respectively(p<0.05). CONCLUSION: Bcl-2 and bax are not significant, whereas Ki-67 LI is suggested as a significant prognostic factor, associated with histologic grade and survival time of astrocytic tumors.

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