Omeprazole promotes gastric epithelial cell migration
Publication in refereed journal

香港中文大學研究人員

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摘要Proton pump inhibitors (PPIs) are effective at preventing non-steroidal anti-inflammatory drug (NSAID)-induced gastric ulcers. They are also superior to histamine H(2)-receptor antagonists and misoprostol in treating NSAID-induced gastric ulcer healing. This study explored whether omeprazole, a PPI, can modulate ulcer healing through epithelial cell proliferation and/or cell migration using a rat normal gastric epithelial cell line (RGM-1). Flow cytometry was used to determine cell proliferation and an artificial wound model was used to measure cell migration. Western blot analysis was performed to evaluate the possible mechanisms of action. Omeprazole treatment (10(-8), 10(-6) and 10(-4)M) for 12 and 24 h did not promote cell proliferation. However, similar doses of the drug (10(-6) and 10(-4) M) incubated for 24-48 h significantly promoted the basal cell migration of gastric epithelial cells. Further, the higher concentration of omeprazole (10(-4) M) reversed the inhibitory action of indometacin (10(-5) M) on cell migration. Western blot results showed that omeprazole did not increase cyclooxygenase-2 expression and did not activate signal transduction pathways, including extracellular signal-regulated kinase (ERK1/ERK2), P38 mitogenic-activated protein kinase, and phosphatidyl inositol 3-kinase. The results suggest that omeprazole is beneficial in basal ulcer healing and it reversed the adverse action of indometacin on ulcer repair under acid-independent conditions. These actions are likely to be mediated through the promotion of gastric epithelial cell migration but not cell proliferation.
著者Ng KM, Cho CH, Chang FY, Luo JC, Lin HC, Lin HY, Chi CW, Lee SD
期刊名稱Journal of Pharmacy and Pharmacology
出版年份2008
月份5
日期1
卷號60
期次5
出版社Wiley: 12 months
頁次655 - 660
國際標準期刊號0022-3573
電子國際標準期刊號2042-7158
語言英式英語
Web of Science 學科類別Pharmacology & Pharmacy; PHARMACOLOGY & PHARMACY

上次更新時間 2020-11-07 於 02:34