• Turk J Med Sci · Jan 2014

    Expression and clinical implications of P53, P63, and P73 protein in malignant tumor of the parotid gland.

    • Mei Yong, Ling Yang, Qimuge Suyila, Wenyan Han, Hongwei Yuan, Cheng Zhao, and Xiulan Su.
    • Turk J Med Sci. 2014 Jan 1; 44 (5): 875-82.

    Background/AimTo investigate the expression of P53, P63, and P73 proteins in malignant parotid gland tumors and adjacent nonneoplastic tissues and the association between the 3 proteins and their clinical characteristics.Materials And MethodsA total of 40 pairs of paraffin-embedded malignant parotid gland tumors and adjacent nonneoplastic tissues were collected. We detected P53, P63, and P73 protein expression by immunohistochemistry. Statistical analysis was performed by using the chi-square test.ResultsP53, P63, and P73 protein expression in malignant parotid gland tumors was higher than their expression in adjacent nonneoplastic tissue (P = 0.030, 0.001, and 0.001, respectively). Expression of P53, P63, and P73 proteins was not associated with age, sex, or lymph node metastasis (P > 0.05). Expression of P53 and P73 proteins, instead of the P63 protein, was correlated to the degree of malignancy (P = 0.026 and 0.018, respectively). There was no significant difference among the P53, P73, and P63 proteins in malignant parotid gland tumors (P > 0.05). In the follow-up, only one patient died of colon cancer.ConclusionOur results suggest that the P53, P63, and P73 proteins may play a role in the development of malignant parotid gland tumors and provide data for their diagnosis.

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