Gastric ulcer patients are more susceptible to developing gastric cancer compared with concomitant gastric and duodenal ulcer patients.

Intestinal metaplasia (IM) and dysplasia are precancerous lesions of gastric cancer (GC); however, the prevalence of IM and dysplasia in patients exhibiting single gastric ulcer (GU) and concomitant gastric and duodenal ulcer (CGDU) varies. In the present study consecutive patients who had undergone esophagogastroduodenal endoscopy were retrospectively screened, and those presenting with GU or CGDU were further evaluated for IM and dysplasia. Patients diagnosed with GC or lymphoma and patients with a history of anti-, non-steroidal anti-inflammatory medicine (NSAIM), H-receptor antagonist or proton pump inhibitor therapy, were excluded from the present study.

[Establishment of a stable nasopharyngeal carcinoma cell line with lentivirus-mediated RNA interference for EIF4G1 gene silencing].

Objective: To establish a nasopharyngeal carcinoma (NPC) cell line with stable EIF4G1 gene silencing induced by small interfering RNA (siRNA).

Methods: The EIF4G1 mRNA levels in 8 NPC cell lines including 5-8F, 6-10B, C666-1, CNE1, CNE2, HNE1, HONE1, and SUNE1 were detected by fluorescence quantitative RT-PCR (QRT-PCR). The recombinant lentivirus shRNA expression plasmid targeting EIF4G1 gene was packaged into mature lentivirus by 293FT cells and used to infect 5-8F cells.