Relation between the expression of P-gp and GST-pi in oral and maxillofacial squamous carcinoma and chemoresistance / 中华口腔医学杂志

ABSTRACT

<p><b>OBJECTIVE</b>To investigating the relation between the expression of P-glycoprotein and Glutathione transferase-pi and the chemoresistance.</p><p><b>METHODS</b>The expressions of these two proteins in patients with oral and maxillofacial squamous carcinoma and normal oral tissues were detected by immunohistochemistry.</p><p><b>RESULTS</b>The positive expression rate of P-gp and GST-pi in oral and maxillofacial malignant tumor was 57.1% and 53.6% respectively, and no expression in normal oral tissues; the expression of GST-pi was relevant to the resistance to cisplatin, while the expression of P-gp was relevant to the resistance to chemotherapeutic drug in general.</p><p><b>CONCLUSIONS</b>The method of immunohistochemistry combining MTT assay in vitro may become an efficient way to predict the sensitivity to chemotherapeutic drug.</p>