Objective To study the expression of connective tissue growth factor(CTGF) and PEST containing nuclear pro‐tein(PCNP) and their significance in pancreatic cancer .Methods The expressions of CTGF and PCNP proteins were tested by im‐munohistochemistry and Immunofluorescence in 39 cases of pancreatic carcinomas and adjacent paracancerous tissues .Results The positive rate of CTGF and PCNP in pancreatic carcinomas was significantly higher than adjacent paracancerous tissues(χ2 =60 .41 , 51 .46 ,all P<0 .01) .The differences of the expression of CTGF and PCNP in pancreatic carcinoma of tumor differentiation ,TNM stage and lymph node metastasis was significant (P< 0 .05) .Conclusion The expression of CTGF and PCNP in the pancreatic cancer was obviously increased ,and the level of CTGF ,PCNP had remarkable connection with the stages of tumor and the condition of lymph node metastasis .

Objective:To evaluate combining fistula risk score(FRS) with drain fluid amylase on postoperative day 1(DFA1) in predicting clinically relevant postoperative pancreatic fistula(CR-POPF) following pancreaticoduodenectomy(PD).Methods:The clinical data of 430 patients who underwent PD in the First Affiliated Hospital of Amy Medical University from Jan 2013 to Oct 2015 was retrospectively analyzed, receiver operating characteristic curve(ROC curve) was used to test whether the FRS predicts the CR-POPF, and DFA1 was employed to predict the CR-POPF in the moderate/high subgroup patients(FRS 3-10).Results:Fifty six patients(13.0%) had CR-POPF, the ROC curve for FRS predicting CR-POPF was formed with area under curve 0.894(95% CI: 0.861-0.921, P<0.001), the results from univariate and multivariate logistic regression analysis showed that FRS was independent risk factor associated with CR-POPF ( OR=2.933, 95% CI: 2.230-3.856, P<0.001). After dividing 430 patients into 2 groups by FRS category, there was no CR-POPF in negligible/low subgroup patients(FRS 0-2), and FRS>2 predicted CR-POPF with negative predictive value 100%; in moderate/high subgroup patients(FRS 3-10), ROC curve worked out DFA1>653.9 U/L predicting CR-POPF well with sensitivity, specificity, positive and negative predictive value of 87.5%, 63.8%, 39.2%, 95.0%, respectively. Conclusion:For patients with FRS≤2, and FRS≥3 accompanying DFA1≤650 U/L, early removal of intra-abdominal drains after PD is safe.

Objective To investigate the clinical application value of pancreatoduodenectomy combined with vascular resection and reconstruction for pancreatic head carcinoma.Methods The clinical data of a patient with pancreatic head carcinoma who underwent pancreatoduodenectomy combined with vascular resection and reconstruction at the Southwest Hospital in March 2014 were retrospectively analyzed.Preoperative imaging examination showed no gap between vascular wall of portal vein (PV) and pancreatic head space-occupying lesion,vascular compression and stenosis at intersection of PV,splenic vein (SV) and superior mesenteric vein (SMV),but not excluding adjacent main PV invasion.During the operation,it was difficult to separate pancreatic head carcinoma from PV,indicating vascular wall invasion at intersection of PV,SV and SMV.Therefore,the pancreatic head,bile ducts,duodenum,partial jejunum,invasive vein vessels,lymphatic and nerve tissues were radically resected,then PV,SMV and SV were reconstructed.The patient was followed up by outpatient examination and telephone interview after surgery till April 2015.Results The patient underwent pancreatoduodenectomy combined with vascular resection and reconstruction successfully without blood transfusion.The operation time was 285 minutes and volume of intraoperative blood loss was 300 mL.The patient had a smooth postoperative recovery,resuming diet at postoperative day 5.The abdominal drainage tube and stitches were removed at postoperative day 6 and day 12,and the patient was discharged from hospital at postoperative day 15.Computed tomography reexamination showed clear vascular anastomose.The patient was not complicated with pancreatic fistula,biliary fistula,intra-abdominal hemorrhage and vascular embolism.The postoperative pathological examination confirmed the diagnosis of pancreatic head moderately differentiated adenocarcinoma accompanied by PV invasion and lymph node metastasis,with a negative margin.The patient began a course of single drug common chemotherapy using gemcitabine at postoperative day 40.No cancer recurrence was detected during the one-year follow-up.Conclusion Pancreatoduodenectomy combined with vascular resection and reconstruction is safe and feasible for the treatment of pancreatic head carcinoma with good surgical effects.

6, 39 cases were with 3～6, 13 cases were with the number less than 3. The diameter of stones was 0.5～1.2 cm. Five cases suffered from bile leakage, 2 cases from peritonitis and 2 cases from remnant stones in the common bile duct. Forty-one patients were followed up and doing well. Conclusions Surgical approach is choosen on the basis individually. Laparoscopic common bile duct exploration for gallstone concomittant with choledocholithiasis is safe.

Objective To investigate the existence of epithelial-mesenchymal transition(EMT)and its relation to the expression of HBx protein in hepatocellular carcinoma(HCC).Methods The expression of HBx protein,E-cadherin,β-catenin,N-cadherin and fibronectin were detected by immumnohistochemistry technique in 76 cases of HCC.Results Among 76 HCC samples,the loss of expressions of E-cadherin and β-catenin were 34%(26/76)and 20%(15/76),respectively.The positive expressions of HBx protein,N-cadherin and frbronectin were observed in 68%(52/76),55%(42/76),46%(35/76)of HCC samples,respectively.The loss of expression of E-cadherin significantly correlated with the positive expression of N-cadherin and HBx protein (P＜0.01).The positive expression of N-cadherin and fibronectin significantly correlated with the loss of expression of β-catenin and the positive expression of HBx protein(P＜0.05).Conclusions EMT exists in hepatocellular carcinoma,and the expression of HBx is significantly associated with EMT.

Objective To investigate the effects of vascular endothelial growth factor receptor-1(VEGFR-1) in the invasion and metastasis of hepatocellular carcinoma(HCC)by detecting the expression of VEGFR-1 in HCC tissues.Methods Paraffin-embedded tissue which containing HCC tissues and adjacent tissues were prepared from patients(n=82)with HCC,then were analyzed by immunohistochemical technique for the expression of VEGFR-1,epithelial marker E-cadherin and mesenchymal marker Vimentin.The relationship between the expression of VEGFR-1 and pathological parameters,and the correlation between VEGFR-1 and E-cadherin,VEGFR-1 and Vimentin were analyzed.Results The expression rates of VEGFR-1 in HCC tissues and adjacent tissues were 89%(73/82)and 0,respectively.The difference of VEGFR-1 expression in portal vein tumor thrombus,tumor capsule,stage,size and differentiation grade of tumor had statistical significance(x2=22.192,15.934,16.751,20.154,6.487,P＜0.05).The expression of VEGFR-1 had effect on the 1-,2-year recurrence rate and 2-year survival rate (x2=0.983,0.958,0.847,P＜0.05),but not on 1-year survival rate(x2=0.359,P＞0.05).The expression of VEGFR-1 was negatively correlated with that of E-cadherin(r=0.765,P＜0.01)but positively with that of Vimentin (r=1.469,P＞0.05).Conclusions VEGFR-1 may play an important role in invasion and metastasis of HCC.Epithelial-mesenehymal transition that induced by VEGFR-1 may contribute to the invasion and metastasis of HCC.

Objective To investigate the significance of combined vascular resection and reconstruction in surgery for pancreatic cancer.Methods The clinical data of 231 patients with pancreatic canccr who received pancreaticoduodenectomy at the Southwest Hospital from January 2006 to December 2011 were retrospectively analyzed.All the patients were divided into the combined vascular resection and reconstruction group (97patients) and non-vascular resection and reconstruction group (134 patients).Effects of operation,results of pathological examination,prognosis and lymph node metastasis on the prognosis of the patients in the 2 groups were compared.Two independent samples t test was used to analyze the measurement data,and the count data were analyzed using the chi-square test.The survival curve was drawn by the Kaplan-Meier method,and the survival was analyzed using the Log-rank test.Results The operation time and intraoperative volume of blood loss were (554 ± 136)minutes and (1110 ± 939)rnl in the combined vascular resection and reconstruction group,and (445 ±106)minutes and (623 ±349)ml in the non-vascular resection and reconstruction group,with significant difference between the 2 groups (t =6.552,4.873,P ＜ 0.05).The mortality,morbidity and positive rate of lymph node metastasis of were 8.2％ (8/97),20.6％ (20/97) and 32.0％ (31/97) in the combined vascular resection and reconstruction group and 3.0％ (4/134),8.2％ (11 / 134) and 16.4％ (22/134) in the non-vascular resection and reconstruction group.There was no significant difference in the mortality between the 2 groups (x2=3.164,P ＞ 0.05),while significant differences in the morbidity and positive rate of lymph node metastasis were detected between the 2 groups (x2 =7.458,7.687,P ＜ 0.05).A total of 223 patients were followed up till September 2012,53 patients were with lymph node metastasis,and their median survival time was 8.4 months (range,6.9-10.0 months) ; 170 patients were with negative lymph node metastasis,and their median survival time was 18.6 months (range,15.8-21.5 months),which was significantly longer than that of patients with positive lymph node metastasis (x2=17.045,P ＜ 0.05).Of the 53 patients with lymph node metastasis,31 were in the combined vascular resection and reconstruction group,and their median survival time was 8.5 months (range,6.3-10.7 months) ; 22 were in the non-vascular resection and reconstruction group,and their median survival time was 8.3 months (range,6.1-10.5 months),with no significant difference between the 2 groups (x2 =0.022,P ＞ 0.05).Of the 178 patients with negative lymph node metastasis,64 were in the combined vascular resection and reconstruction group,and their median survival time was 13.2 months (range,9.2-17.1 months) ; 106 were in the non-vascular resection and reconstruction group,and their median survival time was 21.7 months (range,18.1-25.3 months),with significant difference between the 2 groups (x2 =11.908,P ＜ 0.05).Conclusions Although pancreaticoduodenectomy combined with vascular resection and reconstruction increases the incidence of postoperative complications,it could achieve the complete removal of tumors without significantly increasing the mortality rate.For patients with lymph node metastasis,pancreaticoduodenectomy combined with vascular resection and reconstruction has no influence on the postoperative survival time,while it might have influence on the patients without lymph node metastasis.

Objective To investigate the efficacy of pancreaticoduodenectomy (PD) combined with vascular resection and reconstruction.Methods The clinical data of 56 patients who received PD combined with vascular resection and reconstruction at the Southwest Hospital of Third Military Medical University from January 2007 to May 2011 were retrospectively analyzed.The incidence of perioperative complications,mortality and postoperative conditions were also analyzed.Results The mean operation time and intraoperative blood transfusion were 473 minutes (range,234-853 minutes) and 781 ml (range,0-900 ml),respectively.Seven patients did not receive blood transfusion.The median period of hospital stay was 25.9 days (range,17-100 days).A total of 43 patients underwent PD combined with vascular reconstruction.The incidence of perioperative complications and mortality rate were 34％ (19/56) and 7％ (4/56),respectively.There were 42 patients with pancreatic ductal adenocarcinoma,5 with ampullary carcinoma,3 with distal bile duct carcinoma,4 with papillary carcinoma of duodenum,1 with pancreatic neuroendocrine carcinoma and 1 with pancreatic serous cystadenoma.All patients were followed up till August 2011,and the 1-year survival rate was 57％ (32/56).The mean survival time was 13.5 months.The weight of 32 surviving patients increased and no abdominal pain occurred.Within 3 months after the operation,5 patients had slight diarrhea and were administered antidiarrheal; thrombosis in the artificial blood vessels and peritoneal effusion were found in 1 patient,while 6 months later,collateral circulation was formed and the peritoneal effusion was diminished.Conclusion PD combined with vascular resection and reconstruction can improve the quality of life for patients with pancreatic cancer and with blood vessels involvement.

Objective To investigate the molecular mechanism of epithelial-mesenchymal transition (EMT) induced by activated vascular endothelial growth factor receptor-1 ( VEGFR-I ) in cell line MHCC97-H.Methods MHCC97-H cells were cultured in DMEM with 1％ fetal bovine serum (control group),10 μmol/L PP2 (PP2 group),10 μmol/L PBS (PBS group),50 μmol/L VEGF-B (VEGF-B group),l0μmol/L PP2 and 50 μmol/L VEGF-B (PP2 +VEGF group),10 μmol/L PBS and 50 μmol/L VEGF-B (PBS + VEGF-B group),respectively.Protein expressions of epithelial marker E-cadherin,α-catenin and mesenchymal marker vimentin and N-cadherin were detected by Western blot.The expression sites of E-cadherin,α-catenin and mesenchymal marker vimentin and N-cadherin were detected by cell immunofluorescence.The ability of invasion and migration of cell line MHCC97-H were assessed by cell invasion and migration test.All data were analyzed by the t test.Results The expressions of E-cadherin,α-catenin,vimentin and N-cadherin were 3.23 +0.76,3.01 ±0.25,3.01 +0.22 and 2.63 +0.40 in the control group,4.18 +0.32,3.29 +0.11,4.85 +0.36 and 3.02 +0.52 in the PP2 group,2.83 +0.65,3.03 +0.27,1.37 ±0.24 and 2.98 ±0.36 in the PBS group,2.06 ±0.15,2.84 ±0.76,5.79 ± 0.38 and 5.54 ± 0.28 in the VEGF-B group,6.12 ± 0.08,5.45 ± 0.37,3.36 ± 0.42 and 3.26 ±0.13 in the PP2 + VEGF-B group and 1.36 ±0.54,1.26 ±0.45,4.05 ±0.17 and 1.05 ±0.33 in the PBS +VEGF-B group.There was a significant difference in the expressions of E-cadherin and α-catenin between the PP2 +VEGF-B group and the VEGF-B group (t =7.625,9.931,P ＜ 0.05 ).The expressions of vimentin and N-cadherin in the PP2 + VEGF-B group were significantly lower than those in the VEGF-B group (t =12.001,11.910,P ＜ 0.05).Six hours after the treatment with VEGF-B,the numbers of MHCC97-H migrated were 19 ± 1,5 ± 2and 16 ± 1 in the VEGF-B group,PP2 + VEGF-B group and PBS + VEGF-B group,respectively.The number of MHCC97-H cells migrated in the VEGF-B group was greater than that in the PP2 ± VEGF-B group ( t =13.566,P ＜ 0.05 ).The number of MHCC97-H cells passed through the Boyden chamber was 4 + 2,which was significantly less than 16 ± 1 of the VEGF-B group (t =12.350,P ＜0.05).Conclusion EMT induced by activated VEGFR-1 was mediated via c-Src kinase signal transduction in MHCC91-H cell line,and c-Src may be a potential target to interfere the invasion and migration of hepatic cancer cells.

Objective To evaluate endoscopic sphincterotomy(EST)for the management of choledocholithiasis. Methods Between July 1987 and March 2007,991 cases of choledocholithiasis treated with EST were reviewed,and 710 cases were followed-up. Results All cases were treated with EST.The common bile duct stones were removed in 909 cases(91.7%,909/991).The rate of complications after EST was 6.0%(59/991)including pancreatitls in 29 cases(2.9%),hemorrhage in 18 cases(1.8%),cholangitis in 11 cases(1.1%),and duodenal perforation in 1 case(0.1%).There was no mortality in this group.Follow-up found reflux cholangitis in 51 cases(7.2%)and recurrent choledocholithiasis in 42 cases(5.9%). Conclusion Therapeutic endoscopy for choledocholithiasis is safe and effective.