The angiogenic and prognostic implications of VEGF, Ang-1, Ang-2, and MMP-9 for hepatocellular carcinoma with background of hepatitis B virus

Med Oncol. 2009;26(3):365-71. doi: 10.1007/s12032-008-9130-7. Epub 2008 Dec 11.

Abstract

The objective of this study was to investigate the expressions of angiogenic factors and elucidate their angiogenic and prognostic roles in hepatocellular carcinoma (HCC) with background of hepatitis B virus (HBV). We evaluated microvessel density (MVD) of HCC, and investigated immunohistochemical expression of vascular endothelial growth factor (VEGF), angiopoietins (Ang-1 and Ang-2), and matrix metalloproteinases-9 (MMP-9) in 67 specimens of surgically resected HCC, which were all positive for hepatitis B surface antigen. We investigated the relationship between their expressions and clinicopathological factors or prognosis. The microvessel density (MVD) of tumor tissue and surrounding normal liver tissue was 93.1 +/- 43.8/mm2 and 30.4 +/- 14.8/mm2, respectively. The MVD of well-differentiated HCC was significantly less than that of poorly differentiated HCC. MVD was positively correlated with VEGF and Ang-2 expression (P = 0.0023 and 0.0265, respectively). There was less tumor recurrence in low Ang-2 and low MMP-9 group than high Ang-2 and/or high MMP-9 group (P = 0.002). In Cox regression model, portal vein thrombus and intrahepatic metastasis was the risk factors of tumor recurrence (P = 0.003 and 0.001, respectively). Our study showed that the expression of VEGF and Ang-2 were positively correlated with MVD. Ang-2 expression and/or MMP-9 expression might be a significant predictive factor for recurrence after resection in HCC patients with the background of HBV.

MeSH terms

  • Adult
  • Aged
  • Angiogenic Proteins / metabolism*
  • Angiopoietin-1 / metabolism
  • Angiopoietin-2 / metabolism
  • Antigens, CD34 / metabolism
  • Carcinoma, Hepatocellular / blood supply*
  • Carcinoma, Hepatocellular / metabolism
  • Carcinoma, Hepatocellular / pathology
  • Carcinoma, Hepatocellular / virology*
  • Disease-Free Survival
  • Hepatitis B / complications
  • Hepatitis B / metabolism*
  • Hepatitis B Surface Antigens / metabolism
  • Hepatitis B virus / isolation & purification*
  • Humans
  • Immunohistochemistry
  • Kaplan-Meier Estimate
  • Matrix Metalloproteinase 9 / metabolism*
  • Middle Aged
  • Neovascularization, Pathologic / metabolism
  • Neovascularization, Pathologic / virology
  • Prognosis
  • Proportional Hazards Models
  • Vascular Endothelial Growth Factor A / metabolism

Substances

  • Angiogenic Proteins
  • Angiopoietin-1
  • Angiopoietin-2
  • Antigens, CD34
  • Hepatitis B Surface Antigens
  • VEGFA protein, human
  • Vascular Endothelial Growth Factor A
  • Matrix Metalloproteinase 9