Detalhes bibliográficos
| Ano de defesa: |
2014 |
| Autor(a) principal: |
D'Alessandro, Aline Almeida Barbaresco
 |
| Orientador(a): |
Freitas Júnior, Ruffo de
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| Banca de defesa: |
Derchain, Sophie Françoise Mauricette,
Carneiro, Megmar Aparecida dos Santos,
Filot, Marta Franco,
Sousa, Ana Luiza Lima |
| Tipo de documento: |
Tese
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| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Goiás
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| Programa de Pós-Graduação: |
Programa de Pós-graduação em Medicina Tropical e Saúde Publica (IPTSP)
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| Departamento: |
Instituto de Patologia Tropical e Saúde Pública - IPTSP (RG)
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| País: |
Brasil
|
| Palavras-chave em Português: |
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| Palavras-chave em Inglês: |
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| Área do conhecimento CNPq: |
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| Link de acesso: |
http://repositorio.bc.ufg.br/tede/handle/tede/3992
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Resumo: |
The human papillomavirus (HPV) is a major etiologic factor in the development of cervical cancer, DNA virus primarily infects the epithelium and may induce benign and malignant lesions of the mucous membranes and skin. Carcinogenesis is a multistep process that involves both changes genetic and epigenetic. The two changes epigenetic most studied are DNA methylation and histone acetylation. DNA methylation may be related development to cancer, and their presence or absence can affect the prognosis. The objective of this study was to evaluate the prognosis of patients with cervical cancer in stages I and II through the verification of HPV high and low risk, and the presence and absence of genes methylated and unmethylated RARβ, TIMP3, CDH1 and MGMT. We analyzed 129 records and samples of paraffin embedded biopsies of patients with cervical cancer in stages I and II. Detection of HPV - DNA was performed by PCR for HPV DNA of low and high oncogenic risk and MSP-PCR to detect the genes methylated or not, RARβ, TIMP3, CDH1 and MGMT. The calculation of survival used the Kaplan-Meier method and the log-hank test to compare means of survival between the prognostic factors for cervical cancer. The overall survival at 60 months of patients with the presence of RARβ, TIMP3, CDH1 and MGMT methylated or not were: 100%, 90.0%, 85.7%, 92.5%, respectively, and survival free of disease were 100%, 85.7%, 100%, 100%, respectively. The presence and absence of genes did not affect the overall and disease-free survival. The prevalence of HPV of low risk patients was 45% (58/129) and the high-risk HPV was 76% (98/129). Regarding the analysis to evaluate the existence of statistical relationships between the presence and absence of genes methylated or not, RARβ, TIMP3, CDH1 and MGMT with variables clinical and HPV, it was found that there were no significant differences in the presence and the absence of genes the methylated or not in relation to the distribution of variables. The study demonstrated that the absence and presence of genes methylated or not, RARβ, TIMP3, CDH1 and MGMT, did not influence the prognosis of patients suffering from cervical cancer in stages I and II. |
