RESUMO
Objective: To investigate the effect of CXCL12/CXCR4/CXCR7 axis on the metastasis and invasion in pancreatic cancer so as to provide new evidence for research on pancreatic cancer metastasis treatment. Methods: MiaPaCa-2 cells were transfected with CXCR4 shRNA and CXCR7 shRNA, and the Transwell assay was used to determine the effects of CXCL12/CXCR4/CXCR7 axis on cell invasion and migration. Quantitative RT-PCR and Western blotting were used to explore the effects of CXCL12/CXCR4/CXCR7 axis on the expressions of invasion-related genes (MMP-2 and uPA) and EMT-related genes (E-cadherin and Vimentin). Results: CXCL12 significantly increased the metastasis and invasion of pancreatic cancer cells. The enhancement of tumor cell invasion was effectively countered by CXCR4 shRNA or CXCR7 shRNA. CXCL12/CXCR4 axis in cancer cells increased the expressions of invasion-related genes (MMP-2 and uPA) and EMT-related genes (E-cadherin and Vimentin). CXCL12/CXCR7 axis only increased the expressions of MMP-2 and uPA. Compared to blocking CXCR4 or CXCR7 alone, the inhibitory effects on invasion-related genes and EMT-related genes were more effective when both CXCR4 and CXCR7 were blocked. Conclusion: CXCL12/CXCR4/CXCR7 axis regulates the EMT, metastasis, and invasion of pancreatic cancer cells.
RESUMO
Objective To explore the effect of early enteral nutrition (EEN) and parenteral nutrition (PN) on the postoperative outcomes of patients with gastric cancer and nutritional risk in enhanced recovery after surgery. Methods A total of 130 patients with gastric cancer hospitalized in department of surgery of Ningbo First Hospitalfrom September 2016 to May 2018 were selected and divided into early enteral nutrition support group (EEN) which was placed with jejunal nutrition tube during the operation, and enteral nutrition started within 12-24 hours after the operation, and parenteral nutrition support group (PN) which was given parenteral nutrition support one day after surgery. Patients in both groups were given nutrients of equal heat and nitrogen. The incidence of nutrition-related complications, the incidence of infection-related complications, the length of postoperative hospital stay and the time of anal exhaust were compared between the two groups. Results The incidence of nutrition-related complications was 10 cases (15. 38％) and 4 cases (6. 15％) in EEN group and PN group, that was not statistically different (P = 0. 157). The incidence of infection-related complications was 3 cases (4. 61％) and 5 cases (7. 69％) in EEN group and PN group, that was not statistically different (P = 0. 715). The postoperative hospital stay was 11 days (range, 10-15) and 12 days (range, 11-13) in EEN group and PN group, that was not statistically different (P = 0. 233). The first anal exhaust time and defecation timewere 64 hours (range, 52-77) and 87 hours (range, 76-100) in EEN group and 72 hours (range, 60-86) and 96 hours (range, 86-120) in PN group, that was statistically different (P=0. 001, P=0. 034). Conclusion Enhanced recovery after surgery, early enteral nutrition after gastric cancer surgery may promote the recovery of intestinal function, but the complications and hospital stay after operation are not improved.
