@article { author = {Zaid, khaled and Azar-Maalouf, Elie and Barakat, Charif and Chantiri, Mansour}, title = {p53 Overexpression in Oral Mucosa in Relation to Shisha Smoking in Syria and Lebanon}, journal = {Asian Pacific Journal of Cancer Prevention}, volume = {19}, number = {7}, pages = {1879-1882}, year = {2018}, publisher = {West Asia Organization for Cancer Prevention (WAOCP), APOCP's West Asia Chapter.}, issn = {1513-7368}, eissn = {2476-762X}, doi = {10.22034/APJCP.2018.19.7.1879}, abstract = {Introduction: Shisha (waterpipe) smoking is becoming a very prevalent form of tobacco consumption in the Middleeast and use is growing over the world. Smoking-related malignancies have a high genome-wide burden of mutations,including examples in the gene encoding p53. Aims: To investigate alterations in p53 immunohistochemical expressionin the normal, pre-malignant, malignant oral mucosa in relation to Shisha smoking habits. Materials and Methods:A total of 105 paraffin embedded tissue sections of OSCCs (52 smokers,53 non-smokers), 96 of premalignant lesions(48 smokers,48 non-smokers) and 60 normal oral mucosa. Some 30 patients with a history of Shisha smoking dailyfor more than 5 years were also investigated for mutant expression of p53. Tissue samples were considered positivefor p53 staining when any positive cells of epithelial origin could be detected. Results: The majority (74.3%) of oralsquamous cell carcinomas showed positive staining for p53 expression (83.1% and 65.5% with Shisha smokers andnon-smokers, respectively). In the 96 premalignant lesions, about 23% from non-smokers and 41.7% from smokersshowed p53 positivity. In normal epithelium, P53 positive cells were noted in 6.6% of non-smokers and 16.6% ofsmokers. Positive correlations with Shisha smoking were evident for the following groups: WDOSCC, MDOSCC,mild dysplasia G1, moderate dysplasia G2 and in normal mucosa using Student’s t- test, P valueThese results strongly suggest that p53 mutations are associated with Shisha smoking in OSCC, pre-malignant lesionsand normal mucosa of the oral cavity.}, keywords = {Shisha,Malignancy,oral mucosa,p53}, url = {https://journal.waocp.org/article_65366.html}, eprint = {https://journal.waocp.org/article_65366_aff5b4bca15838e56a6301d144992ee1.pdf} }