Pathology & Oncology Research

, Volume 16, Issue 2, pp 259–266

Vasculogenic Mimicry: a New Prognostic Sign of Gastric Adenocarcinoma

  • Man Li
  • Yanjun Gu
  • Zhiguang Zhang
  • Shiwu Zhang
  • Danfang Zhang
  • Ali F. Saleem
  • Xiulan Zhao
  • Baocun Sun
Article

DOI: 10.1007/s12253-009-9220-7

Cite this article as:
Li, M., Gu, Y., Zhang, Z. et al. Pathol. Oncol. Res. (2010) 16: 259. doi:10.1007/s12253-009-9220-7

Abstract

Vasculogenic mimicry (VM) has been generally recognized as a new pattern of tumor neovascularization. It presents in many human malignancies. Till now, there is no report about VM in gastric adenocarcinoma (GAC). In this study, we collected 173 paraffin-embedded human GAC samples, with detailed follow-up and clinicopathologic data. CD31/ periodic acid-Schiff (PAS) double staining, immunohistochemical staining of CK8 & 18 and laminin were performed to validate the existence of VM in GAC. Microvascular density (MVD) and vasulogenic mimicry density (VMD) were counted respectively. VM was observed in 40 of the 173 GAC patients, especially in poorly differentiated GAC (P = 0.014). Patients with VM were prone to hematogenous metastasis and distant recurrence compared with patients without VM (P = 0.020, 0.029). Higher VMD values was also associated with hematogenous metastasis (P = 0.003). Immunohistochemical staining index (SI) of hypoxia-inducible factor 1α (HIF-1α), vascular endothelial growth factor (VEGF), matrix metalloproteinase (MMP)-2, and MMP-9 were compared between the VM and non-VM group. The SI of four factors were all higher in the VM group than those of non-VM group (P = 0.000, 0.000, 0.004, 0.009, respectively). The Kaplan-Meier survival analysis showed that the VM group has shorter life span compared with non-VM group (P = 0.022). Cox proportional hazards model indicated that the presence of VM and TNM stage were independent predictors of poor prognosis (P = 0.039 and 0.004) for GAC. In conclusion, VM exists in GAC, especially in poorly differentiated GAC. Additionally, it is an unfavorable prognostic indictor for GAC. Hypoxia may play a role in VM formation in GAC.

Keywords

Gastric adenocarcinoma Hypoxia-inducible factor 1α Microvascular density Poorly differentiated Tissue array Vasculogenic mimicry 

Abbreviations

ECM

extracellular matrix

EDV

endothelium dependent vessel

GAC

gastric adenocarcinoma

HIF-1α

hypoxia-inducible factor 1 α

MMP

matrix metalloproteinase

MV

mosaic vessel

MVD

microvascular density

PAS

periodic acid-Schiff

SI

staining index

RBCs

red blood cells

VEGF

vascular endothelial growth factor

VM

vasculogenic mimicry

VMD

vasulogenic mimicry density

Copyright information

© Arányi Lajos Foundation 2009

Authors and Affiliations

  • Man Li
    • 1
    • 2
  • Yanjun Gu
    • 1
  • Zhiguang Zhang
    • 2
  • Shiwu Zhang
    • 1
  • Danfang Zhang
    • 1
  • Ali F. Saleem
    • 3
  • Xiulan Zhao
    • 4
  • Baocun Sun
    • 1
    • 4
  1. 1.Department of Pathology, Tianjin Cancer Institute and HospitalTianjin Medical UniversityTianjinPeople’s Republic of China
  2. 2.Department of DigestiveThe Second Hospital of Tianjin Medical UniversityTianjinPeople’s Republic of China
  3. 3.Department of SurgeryTianjin Medical UniversityTianjinPeople’s Republic of China
  4. 4.Department of PathologyTianjin Medical UniversityTianjinPeople’s Republic of China

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