Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UNIPROT:P04637 (p53)
 77,613 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The incidence of p53 antigen and human papillomavirus (HPV) expression in archival formalin-fixed, paraffin-embedded tissue sections from verrucous carcinoma of the larynx was determined using immunohistochemistry. The p53 oncoprotein was detected in four of 10 tissue samples (40 per cent). The same number of tumours had HPV antigen, and three cases had both p53 oncoprotein and HPV antigen. All positive cases were from heavy smokers and drinkers. After surgical treatment, no tumour recurrence was present in our series. Four patients developed a second head and neck neoplasm and death occurred in three. Three of the patients with second tumour had p53 positive immunoreactivity and two had p53 and HPV expression. Verrucous carcinoma of the larynx presented with overexpression of p53 antigen in a similar percentage to other head and neck cancers. The p53 immunohistochemical determination is well correlated with HPV detection and could have prognostic value in these tumours, but no statistical evidence was present.
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PMID:Human papillomavirus and p53 oncoprotein in verrucous carcinoma of the larynx. 886 7

To investigate the expression of the apoptosis-suppressing protein Bcl-2 in head and neck neoplasm and the relationship between Bcl-2 and p53 oncoprotein, 90 malignant tumours and 20 benign diseases were studied with immunohistochemical LSAB(labeled streptavidin biotin) method. The results indicated that 48.9% (44/90) cases of head and neck malignant tumours were Bcl-2 positive, and all benign diseases were negative. The expression rate of Bcl-2 in head and neck squamous carcinoma (59.6%) was obviously higher than adenocarcinoma (24.8%), undifferentiated tumour (33.3%) and malignant lymphoma (P < 0.05). The expression rate of Bcl-2 in p53-positive tumours was significantly higher in p53-negative neoplasm. The positive rate of Bcl-2 oncoprotein was not connected with clinical stage and pathological grade. The positive staining intensity was significantly related with clinical stage. This study suggested that Bcl-2 oncoprotein may play an important role in the development of head and neck tumour.
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PMID:[Bcl-2 oncoprotein expression in head and neck malignant neoplasm]. 1118 50