Application of flow cytometry for evaluating clinical prognosis and histopathological grade of human glioma
| Autor: | Yu-Hsuan Huang, Shih-Huang Tai, E-Jian Lee, Miin-Jye Wen, Yu Wen Lin, Che-Chao Chang, Hsin Yi Hung, Liang-Chun Chao |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Male Pathology medicine.medical_specialty Cyclin B Flow cytometry 03 medical and health sciences 0302 clinical medicine Glioma medicine Humans Aged Retrospective Studies Aged 80 and over Analysis of Variance biology medicine.diagnostic_test Receiver operating characteristic Brain Neoplasms Cell Cycle DNA General Medicine Middle Aged Cell cycle Flow Cytometry medicine.disease Staining Ki-67 Antigen ROC Curve Neurology 030220 oncology & carcinogenesis Ki-67 biology.protein Immunohistochemistry Female Neurology (clinical) Neoplasm Grading 030217 neurology & neurosurgery |
| Zdroj: | Neurological Research. 38:625-633 |
| ISSN: | 1743-1328 0161-6412 |
| DOI: | 10.1080/01616412.2016.1190119 |
| Popis: | Flow cytometry was applied to predict the biological parameters of tumor behavior based on the DNA content distribution of tumors. We used flow cytometry to determine the number of cell cycles for the characterization of intracranial gliomas and its possible prognostic role.Flow cytometric analysis of the DNA content was performed for 37 fresh operative glioma specimens. The expression of Ki-67 in glioma specimens was detected using immunohistochemistry staining. The check points of G2/M-phase fractions, cyclin B, and pCdk1 (Y15) were analyzed using Western immunoblotting.Compared to low-grade (grade I/II) gliomas, significant differences in the Ki-67, cyclin B, G2/M-phase, and S+G2/M-phase expressions were found in high-grade (grade III/IV) gliomas. Furthermore, receiver operating characteristic (ROC) analysis indicated optimal cutoff points for the G2/M-phase and S+G2/M-phase fractions of 13.47 and 17.26%, respectively, which can be used to differentiate cases with low- and high-grade gliomas. Additionally, both G2/M-phase and S+G2/M-phase fractions had significant association with the expression of Ki-67 in the gliomas. The gliomas were classified by the DNA content. We found that patients with high-grade glioma had worse survival rate than patients with low-grade glioma. Meanwhile, ROC curve analysis gave cutoffs for G2/M-phase of 9.4% and for S+G2/M-phase fractions of 15.04% as best predicting survival. The patients with glioma had poor survival when the levels of G2/M-phase and S+G2/M-phase were more than 9.4 and 15.04%, respectively. In contrast, no significant association between the DNA content of glioma patients and their age, tumor recurrence, and tumor size was found.Our results indicate that flow cytometry analysis for G2/M-phase and S+G2/M-phase fractions can be used for tumor grading for rapidly differentiating low- from high-grade gliomas. |
| Databáze: | OpenAIRE |
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