Overexpression of Protein Phosphatase 2 Regulatory Subunit B"Alpha Promotes Glycolysis by Regulating Hexokinase 1 in Hepatocellular Carcinoma / 生物医学与环境科学（英文）

Objective@#To investigate the regulatory relationship of Protein Phosphatase 2 Regulatory Subunit B"Alpha ( PPP2R3A) and hexokinase 1 ( HK1) in glycolysis of hepatocellular carcinoma (HCC).@*Methods@#In HepG2 and Huh7 cells, PPP2R3A expression was silenced by small interfering RNA (siRNA) and overexpression by plasmid transfection. The PPP2R3A-related genes were searched by RNA sequencing. Glycolysis levels were measured by glucose uptake and lactate production. QRT-PCR, ELISA, western blot and immunofluorescence assay were performed to detect the changes of PPP2R3A and HK1. Cell proliferation, migration and invasion assay were used to study the roles of HK1 regulation by PPP2R3A.@*Results@#RNA sequencing data revealed that PPP2R3A siRNA significantly downregulated the expression of HK1. PPP2R3A gene overexpression promotes, while gene silencing suppresses, the level of HK1 and glycolysis in HCC cells. In HCC tissue samples, PPP2R3A and HK1 were colocalized in the cytoplasm, and their expression showed a positive correlation. HK1 inhibition abrogated the promotion of glycolysis, proliferation, migration and invasion by PPP2R3A overexpression in liver cancer cells.@*Conclusion@#Our findings showed the correlation of PPP2R3A and HK1 in the glycolysis of HCC, which reveals a new mechanism for the oncogenic roles of PPP2R3A in cancer.

Risk factors associated with postoperative complications after reoperation for recurrent Crohn disease / 中华胃肠外科杂志

<p><b>OBJECTIVE</b>To evaluate the risk factors of postoperative complications after reoperation for recurrent Crohn disease(CD).</p><p><b>METHODS</b>From 1995 to 2009, 65 patients undergoing reoperation for recurrent CD were identified in the First Affiliated Hospital of Fujian Medical University. Risk factors of postoperative complications were analyzed. These patients were matched by age to 65 patients undergoing primary operation and treatment outcomes were compared between primary operation and reoperation.</p><p><b>RESULTS</b>Postoperative complications were observed in 25 cases(38.5%) undergoing reoperation for CD recurrence and the rate of postoperative complication was higher than that after primary operation(12.3%). Postoperative complications rate in patients with stoma was significantly lower than those without stoma(15.8% vs. 47.8%, χ(2)=5.831, P=0.016). Compared to primary operation, reoperation had longer operative time, more severe intraperitoneal adhesion, and a longer postoperative hospital stay(all P<0.05).</p><p><b>CONCLUSION</b>Reoperation for CD recurrence is associated with higher postoperative complications. Temporary stoma may decrease the rate of postoperative complication.</p>