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Chinese Archives of General Surgery(Electronic Edition) ›› 2020, Vol. 14 ›› Issue (06): 429-433. doi: 10.3877/cma.j.issn.1674-0793.2020.06.007

Special Issue:

• Original Article • Previous Articles     Next Articles

Relationship among the expression of vascular endothelial growth factor C, platelet-derived growth factor-AA and -BB, lymphangiogenesis and lymph node metastasis in rectal cancer

Kaihuang Lin1,(), Weirong Chen1, Xigui Chen1   

  1. 1. Department of Gastrointestinal Surgery, the Second Affiliated Hospital of Shantou University Medical College, Shantou 515065, China
  • Received:2020-06-04 Online:2020-12-01 Published:2020-12-01
  • Contact: Kaihuang Lin
  • About author:
    Corresponding author: Lin Kaihuang, Email:

Abstract:

Objective

To investigate the expression of vascular endothelial growth factor C (VEGF-C), platelet-derived growth factor (PDGF)-AA and PDGF-BB in rectal cancer tissues and their relationship with lymphangiogenesis and lymph node metastasis.

Methods

The expression of VEGF-C, PDGF-AA and PDGF-BB in 60 cases of rectal cancer (the rectal cancer group) and 30 cases of normal tissues (the control group) were detected by immunohistochemical staining (SP method). The microlymphatics density (LMVD) in rectal cancer was measured by D2-40, and the correlated analysis was conducted.

Results

The positive expression rates of VEGF-C, PDGF-AA and PDGF-BB in the rectal cancer tissues were significantly higher than those in control group (VEGF-C: 63.3% vs 3.3%, P<0.05; PDGF-AA: 40.0% vs 13.3%, P<0.05; PDGF-BB: 55.0% vs 6.7%, P<0.05). The positive rates of VEGF-C and PDGF-BB in lymph node positive group were significantly higher than those in lymph node negative group (VEGF-C: 86.4% vs 50.0%, P<0.01; PDGF-BB: 77.3% vs 42.1%, P<0.05), but there was no evidence show that PDGF-AA was correlated with lymph node metastasis (54.5% vs 31.6%, P>0.05). LMVD in the lymph node positive group was significantly higher than that in the lymph node negative group [(13.11±2.01) /mm2 vs (8.13±2.99) /mm2, P<0.05], LMVD in VEGF-C, PDGF-AAand PDGF-BB positive expression group was significantly higher than that of negative expression group[VEGF-C: (12.06±2.20)/mm2 vs (6.32±2.41)/mm2, P<0.05; PDGF-AA: (11.89±2.46)/mm2 vs(8.67±3.67)/mm2, P<0.05; PDGF-BB: (12.19±2.22)/mm2 vs (7.33±3.02)/mm2, P<0.05 ]. The expression of VEGF-C, PDGF-AA and PDGF-BB in rectal cancer was significantly correlated (VEGF-C vs PDGF-AA: rs=0.366, P<0.05; VEGF-C vs PDGF-BB: rs=0.650, P<0.05; PDGF-AA vs PDGF-BB: rs=0.320, P<0.05).

Conclusions

Lymphangiogenesis is one of the important reasons for lymph node metastasis of rectal cancer. VEGF-C, PDGF-AA and PDGF-BB all can promote lymph node metastasis by participating in lymphangiogenesis of rectal cancer, and they may have a certain synergistic effect. Combined medication for VEGF-C, PDGF-AA and PDGF-BB may be more conducive to the prevention and treatment of lymph node metastasis of rectal cancer.

Key words: Rectal neoplasms, Lymphangiogenesis, Vascular endothelial growth factor-C, Platelet-derived growth factor-AA, Platelet-derived growth factor-BB

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