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  • Title: Glutathione S-transferase-pi in malignant tissues and plasma of human colorectal and gastric cancers.
    Author: Doğru-Abbasoğlu S, Mutlu-Türkoğlu U, Türkoğlu S, Erbil Y, Barbaros U, Uysal M, Aykaç-Toker G.
    Journal: J Cancer Res Clin Oncol; 2002 Feb; 128(2):91-5. PubMed ID: 11862479.
    Abstract:
    PURPOSE: In this study, 16 paired samples of colorectal and gastric cancers and adjacent non-neoplastic tissues were analysed for the determination of glutathione S-transferase (GST) activities and the expression of GST-pi. METHODS: Western blotting procedure as well as plasma GST-pi levels were used. RESULTS: GST activities were found to be increased in malignant tissues of patient compared with adjacent normal tissues. A significant correlation was detected between GST activity and GST-pi expression in malignant tissues of patients. Plasma GST-pi levels increased in patients compared to aged-matched control subjects. When the patients were grouped according to TNM stage, GST-pi expression in malignant tissues as well as plasma GST-pi levels were higher in patients with more advanced tumor stages. CONCLUSIONS: Our results indicate that GST-pi expression in malignant tissues and plasma GST-pi levels in human colorectal and gastric cancers increased depending on the stages of tumor.
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