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Study of cyclooxygenase-2 in renal cell carcinoma

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Cyclooxygenase (COX)-2 plays an important role in the development of various cancers due to its angiogenetic function. As the expression of COX-2 is up-regulated in human colorectal carcinoma and other cancers, we investigated the expression of COX-2 in human renal cell carcinoma (RCC) tissues. One hundred and eight specimens were obtained from patients with RCC, and 20 from normal kidney (NK) tissues. Immunohistochemistry, using affinity purified anti-bodies against human COX-2, and RT-PCR to study the COX-2 mRNA expression were carried out. We also examined whether or not there was a significant difference in the expression of COX-2 among grades (G1, G2, G3) and stages (pT1, pT2, pT3a, pT3b) in RCC. While no marked expression of COX-2 was observed in the NK tissues, a significantly strong expression of COX-2 was detected in RCC tissues. The extent and intensity of immunoreactive COX-2 polypeptides in cancer cells were statistically greater than those of cells from normal kidney tissues. However, no marked difference was seen among grades or between stages. These results demonstrate that the generated COX-2 in human renal cell carcinoma plays an important role in the proliferation of malignant renal cells.
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Document Type: Research Article

Affiliations: Department of Urology, Osaka City University Hospital, Abenoku, Osaka 545-8585, Japan., Email: [email protected]

Publication date: February 1, 2004

More about this publication?
  • The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.

    The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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