1. Association between human Papillomavirus and colorectal adenocarcinoma and its influence on tumor staging and degree of cell differentiation
- Author
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Olavo Magalhães PICANÇO-JUNIOR, Andre Luiz Torres OLIVEIRA, Lucia Thereza Mascarenhas FREIRE, Rosangela Baia BRITO, Luisa Lina VILLA, and Délcio MATOS
- Subjects
Papillomavirus infections ,Carcinoma ,Colorectal neoplasms ,Neoplasm saging ,Cell differentiation ,Surgery ,RD1-811 ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
BACKGROUND: Colorectal cancer is one of the most common types of neoplasia among the worldwide adult population. Among neoplasms of the gastrointestinal tract, it is ranked second in relation to prevalence and mortality, but its etiology is only known in around 5% of the cases. It is believed that 15% of malignant diseases are related to viral oncogenesis. AIM: To correlate the presence of HPV with the staging and degree of cell differentiation among patients with colorectal adenocarcinoma. METHODS: A retrospective case-control study was conducted on 144 patients divided between a test group of 79 cases of colorectal cancer and a control group to analyze 144 patients aged 25 to 85 years (mean, 57.85 years; standard deviation, 15.27 years and median, 58 years). Eighty-six patients (59.7%) were male. For both groups, tissue samples from paraffin blocks were subjected to DNA extraction followed by the polymerase chain reaction using generic and specific primers for HPV 16 and 18. Dot blot hybridization was also performed with the aim of identifying HPV DNA. RESULTS: The groups were shown to be homogenous regarding sex, age and site of HPV findings in the samples analyzed. Out of the 41 patients with HPV, 36 (45.6%) were in the cases and five (7.7%) were in the control group (p
- Published
- 2014
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