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International Journal of Molecular Medicine

International Journal of Molecular Medicine is an international journal devoted to molecular mechanisms of human disease.

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Oncology Reports is an international journal devoted to fundamental and applied research in Oncology.

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Experimental and Therapeutic Medicine is an international journal devoted to laboratory and clinical medicine.

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Oncology Letters is an international journal devoted to Experimental and Clinical Oncology.

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Article

Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density

  • Authors:
    • Jing Zhang
    • Wei Yang
    • Duanyun Zhao
    • Yun Han
    • Bo Liu
    • Hua Zhao
    • Hongbo Wang
    • Quanzhong Zhang
    • Guangming Xu
  • View Affiliations / Copyright

    Affiliations: Department of Neurosurgery, Shandong University, Jinan, Shandong 250100, P.R. China, Department of Neurosurgery, Shandong Provincial Hospital, Jinan, Shandong 250014, P.R. China, Department of Neurosurgery, Heze Municipal Hospital, Heze, Shandong 274000, P.R. China
  • Pages: 95-100
    |
    Published online on: October 29, 2013
       https://doi.org/10.3892/ol.2013.1650
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Abstract

Gliomas are the most common type of primary tumor in the central nervous system and are characterized by abundant capillary angiogenesis. It is important to study the underlying molecular mechanisms of angiogenesis in order to aid the identification of potential therapeutic targets. The aim of the current study was to investigate the expression levels of thrombospondin-1 (TSP-1), transforming growth factor-β (TGF-β) and peroxisome proliferator-activated receptor-γ (PPAR-γ) in gliomas, and determine their relationships with angiogenesis. Immunohistochemical methods were used to detect TSP-1, TGF-β and PPAR-γ expression levels and to assess microvascular density (MVD) in 99 glioma tissue samples of various grades. The total positive expression rates of TSP-1 and PPAR-γ were 78.4 and 94.1% in low-grade gliomas and 45.8 and 39.6% in high‑grade gliomas. These values suggest that their expression negatively correlated with tumor grade. However, TGF-β expression positively correlated with tumor grade; the total positive expression rate of TGF-β in high‑grade gliomas (93.8%) was significantly increased compared with that in low-grade gliomas (43.1%). The MVD in the low‑grade group was 28±7.2 vessels/field, which was significantly lower than in the high-grade group (45±6.2 vessels/field). TSP-1 and PPAR-γ expression levels were negatively correlated with MVD (P<0.05), while the TGF-β expression level was positively correlated with MVD (P<0.05). These results indicate that the TSP-1, TGF-β and PPAR-γ expression levels in gliomas are correlated with MVD, which suggests that these proteins may be involved in the regulation of glioma angiogenesis.
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Copy and paste a formatted citation
Spandidos Publications style
Zhang J, Yang W, Zhao D, Han Y, Liu B, Zhao H, Wang H, Zhang Q and Xu G: Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density. Oncol Lett 7: 95-100, 2014.
APA
Zhang, J., Yang, W., Zhao, D., Han, Y., Liu, B., Zhao, H. ... Xu, G. (2014). Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density. Oncology Letters, 7, 95-100. https://doi.org/10.3892/ol.2013.1650
MLA
Zhang, J., Yang, W., Zhao, D., Han, Y., Liu, B., Zhao, H., Wang, H., Zhang, Q., Xu, G."Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density". Oncology Letters 7.1 (2014): 95-100.
Chicago
Zhang, J., Yang, W., Zhao, D., Han, Y., Liu, B., Zhao, H., Wang, H., Zhang, Q., Xu, G."Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density". Oncology Letters 7, no. 1 (2014): 95-100. https://doi.org/10.3892/ol.2013.1650
Copy and paste a formatted citation
x
Spandidos Publications style
Zhang J, Yang W, Zhao D, Han Y, Liu B, Zhao H, Wang H, Zhang Q and Xu G: Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density. Oncol Lett 7: 95-100, 2014.
APA
Zhang, J., Yang, W., Zhao, D., Han, Y., Liu, B., Zhao, H. ... Xu, G. (2014). Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density. Oncology Letters, 7, 95-100. https://doi.org/10.3892/ol.2013.1650
MLA
Zhang, J., Yang, W., Zhao, D., Han, Y., Liu, B., Zhao, H., Wang, H., Zhang, Q., Xu, G."Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density". Oncology Letters 7.1 (2014): 95-100.
Chicago
Zhang, J., Yang, W., Zhao, D., Han, Y., Liu, B., Zhao, H., Wang, H., Zhang, Q., Xu, G."Correlation between TSP-1, TGF-β and PPAR-γ expression levels and glioma microvascular density". Oncology Letters 7, no. 1 (2014): 95-100. https://doi.org/10.3892/ol.2013.1650
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