It was proven that MDR in gastric cancer reversed by curcumin is closely related to NF-κB-mediated apoptosis [25,26], and the Chinese herb glaucine, an isoquinoline alkaloid isolated from the stem of Corydalis yanhusuo, can inhibit P-gp and MRP1 mediated efflux and increase ATPase activity of the transporter protein pumps in MCF-7/ADR drug-resistant breast cancer cells [27]. Here, PGP is linked to gastric cancer.