Le infezioni in medicina · 2022
Higher viral load of Epstein-Barr virus in gastric cancer compared with non-cancerous gastroduodenal tissues.
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Zebardast Arghavan, Pazhoohan Maryam, Cherati Azadeh Yazdani, Salehi Maryam, Amoli Saghar Saber, Yahyapour Yousef, Ranaee Mohammad, Shirvani Javad Shokri, Sadeghi Farzin
Аннотация
INTRODUCTION: Epstein-Barr Virus (EBV)-associated gastric cancer is a distinct molecular subtype of gastrointestinal carcinomas as defined by the Cancer Genome Atlas.
METHODS: In the present study 237 samples from Iranian patients diagnosed with gastric cancer and gastroduodenal disease were retrospectively examined for EBV infection by quantitative Real-Time PCR.
RESULTS: Of the 237 samples tested, EBV DNA was detected in 37 samples (15.6%), in 13 of the 81 gastric cancer cases (16%), and 24 of the 156 non-cancerous samples (15.4%). The EBV infection rate was found higher in patients with gastric ulcer (35%) and duodenal ulcer (21.9%) compared to patients with gastric cancer (16%) and gastritis (19.6%). The EBV-encoded small RNA (EBER) copy number in the gastric cancer group (mean = 2.14×10-1 with range of 2.14×10-2 to 4.10×10-1 copies/ cell) was higher than gastroduodenal diseases group (mean = 1.39×10-2 with range 1.11×10-3 to 2.35×10-2 copies/ cell), and this difference was statistically significant (P >0.001).
CONCLUSION: The higher number of copies of EBV-EBER in the gastric cancer group compared to the non-cancer group confirmed the possible role of EBV in inducing cancer.
METHODS: In the present study 237 samples from Iranian patients diagnosed with gastric cancer and gastroduodenal disease were retrospectively examined for EBV infection by quantitative Real-Time PCR.
RESULTS: Of the 237 samples tested, EBV DNA was detected in 37 samples (15.6%), in 13 of the 81 gastric cancer cases (16%), and 24 of the 156 non-cancerous samples (15.4%). The EBV infection rate was found higher in patients with gastric ulcer (35%) and duodenal ulcer (21.9%) compared to patients with gastric cancer (16%) and gastritis (19.6%). The EBV-encoded small RNA (EBER) copy number in the gastric cancer group (mean = 2.14×10-1 with range of 2.14×10-2 to 4.10×10-1 copies/ cell) was higher than gastroduodenal diseases group (mean = 1.39×10-2 with range 1.11×10-3 to 2.35×10-2 copies/ cell), and this difference was statistically significant (P >0.001).
CONCLUSION: The higher number of copies of EBV-EBER in the gastric cancer group compared to the non-cancer group confirmed the possible role of EBV in inducing cancer.