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ENGLISH ABSTRACT
JOURNAL ARTICLE
[Expressions of hypoxia inducible factor-1alpha and vascular endothelial growth factor in human renal cell carcinoma].
OBJECTIVE: To explore the expression of hypoxia inducible factor-1alpha (HIF-1alpha) and vascular endothelial growth factor (VEGF) in renal cell carcinoma (RCC) and their relationship.
METHODS: The expression of HIF-1alphaand VEGF was examined in 42 patients with renal cell carcinoma by SABC methods of immunohistochemistry.
RESULTS: The positivity rate of HIF-1alpha was 57.1% in the RCC tissues, and there was no expression in the tissue adjacent to the tumor and normal tissues. The positivity rate of VEGF was 61.9% in the tumor tissues, with significant difference from the control tissues (P<0.05). The expression levels of HIF-1alpha and VEGF were significantly higher in metastatic RCC than in non-metastatic RCC (P<0.01) tissues, and there was a significant correlation between HIF-1alpha and VEGF expressions (Kappa=0.41, P<0.01).
CONCLUSIONS: HIF-1alpha is highly expressed in renal cell carcinoma tissues in close correlation with VEGF. HIF-1alpha and VEGF may serve as important indicators to evaluate the biological behaviors of RCC such as metastasis and prognosis. HIF-1alpha is an important regulator of VEGF.
METHODS: The expression of HIF-1alphaand VEGF was examined in 42 patients with renal cell carcinoma by SABC methods of immunohistochemistry.
RESULTS: The positivity rate of HIF-1alpha was 57.1% in the RCC tissues, and there was no expression in the tissue adjacent to the tumor and normal tissues. The positivity rate of VEGF was 61.9% in the tumor tissues, with significant difference from the control tissues (P<0.05). The expression levels of HIF-1alpha and VEGF were significantly higher in metastatic RCC than in non-metastatic RCC (P<0.01) tissues, and there was a significant correlation between HIF-1alpha and VEGF expressions (Kappa=0.41, P<0.01).
CONCLUSIONS: HIF-1alpha is highly expressed in renal cell carcinoma tissues in close correlation with VEGF. HIF-1alpha and VEGF may serve as important indicators to evaluate the biological behaviors of RCC such as metastasis and prognosis. HIF-1alpha is an important regulator of VEGF.
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