Expression and clinical significance of frizzled-7 and β-catenin in human hepatocellular carcinoma / 中华肝胆外科杂志

Objective To explore the expression of frizzled-7 and β-catenin proteins in hepatocellular carcinoma (HCC),and determine their relationship with clinicopathological features and prognosis.Methods Expression levels of frizzled-7 and β-catenin proteins were detected by the SP immunohistochemical technique in 64 cases of HCC and 15 normal liver tissues.Results Frizzled-7 and β-catenin proteins were found in 42 (65.6％) and 45 (70.3％) of tumor specimens respectively,which was significantly higher than that in normal liver tissues.The expression of frizzled-7 protein was significantly positively correlated with that of β-catenin (P ＜ 0.05) in HCC.The high expression of frizzled-7 was closely correlated to tumor size (P =0.014),histologic grade (P =0.020),portal vein tumor thrombus (P =0.034),tumor recurrence (2 years,P =0.030),TNM stage (P =0.022),and HBsAg (P =0.025),and negatively correlated with 5-year postoperative survival (47.6％ vs.13.2％).The expression of β-catenin protein was significantly associated with histologic grade (P =0.012),tumor recurrence (2 years,P =0.010),and TNM stage (P =0.026),and negatively correlated with 5-year postoperative survival (36.8％ vs.20.0％).Conclusions Frizzled-7 is overexpressed in HCC and associated with decreased postoperative survival.Moreover,frizzled-7 may up-regulate the expression of β-catenin and promote β-catenin-mediated tumor invasion and recurrence.

Radical pancreaticoduodenectomy via mesenteric approach / 中华消化外科杂志

Radical pancreaticoduodenectomy is the only effective method for the treatment of malignancies in the pancreatic head and the periampulary region.Early determination of the involvement of the superior mesenteric artery (SMA)is important for the selection of the surgical procedure and judgment of the prognosis.The operation should follow the principle of tumor-free and adequate resection range,safe resection margin and complete lymph node resection.For this purpose,we performed the radical pancreaticoduodenectomy via mesenteric approach.The SMA was dissected first,and then the tumor was en-bloc resected.From December 2011 to December 2012,24 patients with tumors in the pancreatic head or the periampullary region received radical pancreaticoduodenectomy via the mesenteric approach at the Second Affiliated Hospital of Harbin Medical University,and the short-term outcome was satisfactory.