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자료유형
학술저널
저자정보
저널정보
거트앤리버 발행위원회 Gut and Liver Gut and Liver 제11권 제1호
발행연도
2017.1
수록면
79 - 86 (8page)

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Background/Aims: To evaluate the expression of cellular inhibitor of apoptosis protein 2 (cIAP2) during gastric carcinogenesis after Helicobacter pylori (HP) infection and after HP eradication. Methods: We divided non-cancer patients into four groups according to the status of HP infection and atrophic gastritis (AG)/intestinal metaplasia (IM). We compared cIAP2 mRNA expression among these four groups and patients with HP-positive early gastric cancer (EGC) by using real-time polymerase chain reaction (PCR). We evaluated the expression of cIAP2 messenger RNA (mRNA)/protein by using real-time PCR/immunohistochemistry and the degree of apoptosis with a terminal deoxynucleotidyl transferasemediated nick end labeling assay before and 12 months after endoscopic submucosal dissection (ESD) in HP-positive EGC patients, regardless of whether they had undergone eradication therapy. Results: The expression of cIAP2 mRNA was significantly higher in the groups with HP(+), AG/IM(+), and HP-positive EGC than in the control, HP(+), and AG/ IM(–) groups (p<0.005). In the HP eradication group, the expression of cIAP2 mRNA/protein significantly decreased (p=0.006) and apoptosis increased at the 12-month followup after ESD. In the HP noneradication group, the aforementioned changes were not found during the same follow-up period. Conclusions: The expression of cIAP2 increased during gastric carcinogenesis after HP infection; HP eradication in the patients who had undergone ESD for EGC reversed overexpression of cIAP2 and suppressed cell apoptosis.

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