Cell-cycle analysis and apoptosis-associated proteins in cervical lesions of Brazilian women
| Autor: | Cristine, Dobo, Celina Tizuko Fujiyama, Oshima, Flávio, De Oliveira Lima, Thiago Simão, Gomes, João Norberto, Stávale, Vítor, Arias, Daniel Araki, Ribeiro, Gustavo R A, Focchi |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Cyclin-Dependent Kinase Inhibitor p21
Caspase 3 Uterine Cervical Neoplasms Cell Cycle Proteins Prognosis Uterine Cervical Dysplasia Immunoenzyme Techniques Proto-Oncogene Proteins c-bcl-2 Biomarkers Tumor Carcinoma Squamous Cell Humans Female Neoplasm Invasiveness Tumor Suppressor Protein p53 Apoptosis Regulatory Proteins Brazil Cyclin-Dependent Kinase Inhibitor p27 Neoplasm Staging |
| Zdroj: | Anticancer research. 34(6) |
| ISSN: | 1791-7530 |
| Popis: | 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.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.Significant differences were observed in the p53 expression between the different groups: NN and CIN I (p=0.010); NN and CIN II (p0.00001); 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 (p0.0001). For p27(Kip1), significant differences were observed between NN and CIN I (p0.00001); NN and CIN II (p0.00001); 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 (p0.00001). Bcl-2 and caspase-3 did not show remarkable differences between groups.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. |
| Databáze: | OpenAIRE |
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