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Research ArticleClinical Studies

Expression of Hypoxia-inducible Factor (HIF-1α), VEGF-C and VEGF-D in Non-invasive and Invasive Breast Ductal Carcinomas

KOICHIRO OKADA, MITSUHIKO OSAKI, KUNIO ARAKI, KIYOSUKE ISHIGURO, HISAO ITO and SHIGETSUGU OHGI
Anticancer Research July 2005, 25 (4) 3003-3009;
KOICHIRO OKADA
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MITSUHIKO OSAKI
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  • For correspondence: osamitsu@grape.med.tottori-u.ac.jp
KUNIO ARAKI
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KIYOSUKE ISHIGURO
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HISAO ITO
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SHIGETSUGU OHGI
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Abstract

Background: Hypoxia-inducible factor 1 alpha (HIF-1α) is a transcription factor that may play an important role in tumour growth and metastasis by its regulation of angiogenesis and lymphangiogenesis to survive cellular hypoxia. Lymphangiogenesis is promoted by vascular endothelial growth factors (VEGF)-C and VEGF-D, but the correlation between the expression of HIF-1α and VEGF-C or VEGF-D in human breast carcinoma is not well elucidated. This study examined the pathobiological role of these molecules in human breast ductal carcinoma. Materials and Methods: The expressions of HIF-1α, VEGF-C and VEGF-D were analyzed in 10 normal mammary epithelia, 12 fibroadenomas, 20 ductal carcinomas in situ (DCISs and 36 invasive ductal carcinomas (IDCs) by immunohistochemistry, comparing clinicopathological parameters. Results: HIF-1α expression in nuclei was found in DCIS and IDC, but not in normal or fibroadenoma cells. The HIF-1α labelling index was significantly correlated with the degree of VEGF-C expression in IDC (p<0.001), but not in DCIS. HIF-1α expression was significantly correlated with tumour necrosis and with the Van Nuys prognostic index (VNPI) (p<0.05, p<0.05, respectively) in the 20 DCISs. On the other hand, VEGF-D levels, but not those of HIF-1α and VEGF-C, were significantly higher in cases with lymph node metastasis and estrogen receptor expression in carcinoma cells (p<0.01, p<0.05, respectively) in the 36 IDCs. Conclusion: These findings suggest that HIF-1α is expressed in the early stage of mammary carcinogenesis, in which the expression correlates with necrosis in the DCISs and with VEGF-C expression in the IDCs, the latter resulting in a higher frequency of metastasis to regional lymph nodes.

  • HIF-1α
  • VEGF-C
  • VEGF-D
  • breast ductal carcinoma

Footnotes

  • Received December 20, 2004.
  • Accepted April 13, 2005.
  • Copyright© 2005 International Institute of Anticancer Research (Dr. John G. Delinassios), All rights reserved
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Anticancer Research: 25 (4)
Anticancer Research
Vol. 25, Issue 4
1 Jul 2005
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Expression of Hypoxia-inducible Factor (HIF-1α), VEGF-C and VEGF-D in Non-invasive and Invasive Breast Ductal Carcinomas
KOICHIRO OKADA, MITSUHIKO OSAKI, KUNIO ARAKI, KIYOSUKE ISHIGURO, HISAO ITO, SHIGETSUGU OHGI
Anticancer Research Jul 2005, 25 (4) 3003-3009;

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Expression of Hypoxia-inducible Factor (HIF-1α), VEGF-C and VEGF-D in Non-invasive and Invasive Breast Ductal Carcinomas
KOICHIRO OKADA, MITSUHIKO OSAKI, KUNIO ARAKI, KIYOSUKE ISHIGURO, HISAO ITO, SHIGETSUGU OHGI
Anticancer Research Jul 2005, 25 (4) 3003-3009;
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