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Analysis of Colorectal Cancer and Polyps for the Presence of Herpes Simplex Virus and Epstein - Barr virus DNA Sequences by Polymerase Chain Reaction | ||
| Middle East Journal of Cancer | ||
| مقاله 2، دوره 6، شماره 4، دی 2015، صفحه 211-218 اصل مقاله (731.15 K) | ||
| نوع مقاله: Original Article(s) | ||
| نویسندگان | ||
| Sahar Mehrabani-Khasraghi* 1؛ Farzad Khalily2؛ Mitra Ameli3 | ||
| 1Department of Microbiology, Tonekabon Branch, Islamic Azad University, Mazandaran, Iran | ||
| 2Gastroenterology and Hepatology Research Center , Karaj University of Medical Sciences and Health Services, Alborz, Iran | ||
| 3Department of Medicine, Tonekabon Branch, Islamic Azad University, Mazandaran, Iran | ||
| چکیده | ||
| Background: Colorectal cancer is one of the most common malignancies worldwide with more than one million new cases diagnosed each year . The aim of this study is to investigate the prevalence of herpes simplex virus and Epstein-Barr virus in patients with colorectal carcinomas and polyps in comparison with healthy subjects by using the polymerase chain reaction technique.Methods: In this analytical case-control study, we selected 15 patients with colorectal cancer , 20 patients with colorectal polyps and 35 patients without malignancy as controls. Biopsy specimens were frozen under sterile conditions at -20ºC. After DNA extraction, analysis of polymerase chain reaction to detect herpes simplex virus and Epstein-Barr virus DNA in tissue samples was performed. Statistical analysis was performed with the χ2 test.Results: We observed herpes simplex DNA in 33.3% of tumor samples (5 of 15) and 20% from the non-malignant control group (7 of 35). There was no herpes simplex DNA in the polyp tissues (0 of 20). Epstein-Barr DNA was found in 60% of tumor samples (9 of 15), 35% of polyp samples (7 of 20), and 40% of the non-malignant control group (14 of 35). Statistical analysis showed no significant association between the prevalence of herpes simplex and Epstein- Barr viruses and the incidence of colorectal cancer and polyps compared with the control group.Conclusion: The results demonstrate a lack of direct molecular evidence to support an association between herpes simplex and Epstein-Barr viruses with human colorectal malignancies. These results do not exclude a possible oncogenic role of these viruses to infect different colon cells. | ||
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