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. 2015 Dec 14;8(1):39–57. doi: 10.15252/emmm.201505505

Figure 6. Bevacizumab therapy leads to reduced vessel density and increased Ang‐2 expression.

Figure 6

  • A–E
    Immunohistochemistry stainings with antibodies directed against CD31 (A) and Ang‐2 (B) in treatment‐naive GBM, post‐radiochemotherapy (S/RTx/CTx), and post‐radiochemotherapy + bevacizumab (S/RTx/CTx/Bev) therapy are displayed. Quantitative analyses of microvessel densities and Ang‐2+ vessels are shown in (C) and (D). The ratio of Ang‐2+ versus CD31+ vessels was determined in (E). Scale bars: 200 μm (A), 100 μm (B).
  • F
    Western Blot and corresponding quantification of CD31 and Ang‐2 in control and aflibercept‐treated mice (n = 5 each).
  • G–I
    CAIX staining of treatment‐naive GBM and S/RTx/CTx/Bev patients. Analyses of hypoxic (CAIX +) area with regard to the whole tumor in human GBM (H). Tumor‐infiltrating lymphocytes (CD8/CD3) in human patients (I). Scale bar: 100 μm.
Data information: Kruskal–Wallis (C–E, H–I). *< 0.05, **< 0.01, ***< 0.005; treatment‐naive GBM = 26, S/RTx/CTx = 7, S/RTx/CTx/Bev = 29; t‐test (F); data are mean ± SEM.