Abstract：
AIM:The aim of the present study was to detect the relative expressions of p53, p21(Waf1/Cip1), p27(Kip1) Bcl-2 and cleaved caspase-3 in cervical lesion samples from Brazilian women by immunohistochemistry. MATERIALS AND METHODS:A total of 230 cervical biopsies in paraffin-embedded blocks were studied: 43 were invasive squamous cell carcinomas (SCC), 52 carcinomas in situ/cervical intraepithelial neoplasias III (CIN III), 54 cervical intraepithelial neoplasias II (CIN II), 51 cervical intraepithelial neoplasias I (CIN I) and 30 non-neoplastic lesions (NN) with benign cellular changes. RESULTS:Significant differences were observed in the p53 expression between the different groups: NN and CIN I (p=0.010); NN and CIN II (p<0.00001); CIN II and CIN III (p=0.02); CIN II and CIS (p=0.0220); CIN II and CEC (p=0.010). Regarding p21(WAF1/Cip1), significant differences were observed between NN and CEC (p=0.001); CIN I and CEC (p=0.001); CIN II and CIN III (p=0,001); CIN II and CIS (p=0.0004) and CIN II and CEC (p<0.0001). For p27(Kip1), significant differences were observed between NN and CIN I (p<0.00001); NN and CIN II (p<0.00001); NN and CIS (p=0.038); CIN I and CIN III (p=0.001); CIN I and CIS (p=0.009); CIN I and CEC (p=0.0001); CIN II and CIN III (p=0.0003); CIN II and CIS (p=0.002); CIN II and CEC (p< 0.00001). Bcl-2 and caspase-3 did not show remarkable differences between groups. CONCLUSION:p53, p21(WAF1/CIP1), p27(KIP1) appear to be involved in the course of carcinogenesis. Rare expression of Bcl-2 and cleaved caspase-3 suggests that these proteins probably do not participate in cervical apoptosis.
journal_name
Anticancer Resjournal_title
Anticancer researchauthors
Dobo C,Oshima CT,De Oliveira Lima F,Gomes TS,Stávale JN,Arias V,Ribeiro DA,Focchi GRsubject
Has Abstractpub_date
2014-06-01 00:00:00pages
2789-96issue
6eissn
0250-7005issn
1791-7530pii
34/6/2789journal_volume
34pub_type
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