Humans ; Pancreatectomy ; adverse effects ; methods ; Postoperative Complications ; Spleen ; blood supply

Humans ; Lymph Node Excision ; Pancreatic Neoplasms ; surgery

Humans ; Lymph Node Excision ; standards ; Pancreatic Ducts ; pathology ; surgery

Objective To explore the clinical efficacy and safety of complex splenectomy.Methods The retrospective cohort study was adopted.The clinical data of 235 patients including 135 from Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine,67 from Shanghai Jiaotong University Affiliated First People's Hospital,26 from Shanghai Jiaotong University Affiliated Sixth People's Hospital,7 from 85 Hospital of PLA who underwent complex splenectomy from January 2005 to December 2015 were collected.All the patients received total splenectomy after splenic artery ligation.The observation indexes included:(1) surgical situations,(2) major complications including intraperitoneal hemorrhage,pulmonary complication,left subphrenic abscess and peritoneal effusion,(3) follow-up situations:portal vein (PV) complications (splenic venous thrombophlebitis,thrombosis of splenic vein and main portal vein thrombosis),survival of patients.The follow-up using outpatient examination and telephone interview was performed up to March 2016,and patients received regularly ultrasound reexamination,computed tomography (CT) rescan,routine blood retest and coagulation function.Measurement data with normal distribution were presented as-x ± s,and count data were analyzed using the chisquare test.Results (1) Surgical situations:of 235 patients,200 patients underwent secondary spleen pedicle severance and 35 patients underwent non-secondary spleen pedicle severance.Volume of intraoperative blood loss and duration of splenic resection were (268 ± 103) mL and (82 ± 29) minutes.(2) Major complications:of 31 patients with postoperative complications,intraperitoneal hemorrhage was detected in 12 patients,pulmonary complication in 17 patients,left subphrenic abscess in 3 patients and massive peritoneal effusion in 21 patients.Some patients were combined with multiple symptoms.The patients with above complications were cured after reoperations and non-operative treatments.(3) Follow-up situations:PV complications:splenic venous thrombophlebitis was detected in 16 patients,thrombosis of splenic vein in 17 patients,thrombosis of splenic vein combined with main portal vein thrombosis in 7 patients,and they were improved after the treatments of antiinflammation,anti-coagulation and thrombolysis.The thrombi rate after splenectomy was 32.4％ (12/37) in patients with schistosoma-related cirrhosis and 8.1％ (12/149) in patients with HBV-related cirrhosis,with a statistically significant difference (x2 =10.9,P ＜ 0.05).Survival of patients:of 235 patients,228 were followed up for (7.9 ± 4.2) years,with good survival.Conclusion Complex splenectomy is safe and effective,and the key procedure determining the safety of complex splenectomy includes careful preoperative evaluation,delicate surgical technique,proper splenic pedicle severance and peritoneal wounds.

Objective To investigate the clinical significance of silent mating-type information regulation 2 homologue 1 (SIRT1) in hepatocellular carcinoma (HCC).Method We analyzed p53 mutation by gene sequencing and activation of SIRT1 and AMP-actived protein kinase (AMPK) using western-blot in 252 patients with hepatitis B virus-positive HCC.Results A higher proportion of tissues with mutant p53 were demonstrated to harbor activated SIRT1 (64.8％ vs 31.8％ ; P ＜ 0.01).Activated SIRT1 predicted a longer relapse-free survival.On multivariate analysis,activated SIRT1 remained significant (OR:0.339,CI:0.160-0.720,P =0.005).Analysis of 252 paired specimens revealed a significant correlation between activated SIRT1 and activated AMPK in HCC tissues harboring mutant p53 (P =0.007).Conclusion SIRT1 exerted anti-carcinogenic effects through the AMPK pathway in HCC in the context of mutant p53.

Objective To evaluate the outcome of surgical approaches in patients of gastric cancer with portal hypertension.Methods The clinical data of 80 patients with portal hypertension undergoing curative surgery for gastric cancer or simultaneous surgery for portal hypertension were retrospectively analyzed.Results The radical gastrectomy alone had no tremendous impact on postoperative liver function.But simultaneous surgery for portal hypertension affected patients' liver function dramatically (P =0.018).For those who underwent surgery for portal hypertension simultaneously,the incidence of complications in Child B patients was much higher than that in Child A patients (P =0.018).However,the incidence of complications did not differ between Child A and B patients who underwent radical gastrectomy alone.In addition,patients undergoing simultaneous surgery for portal hypertension had more severe complications than those who underwent radical gastrectomy only (P =0.042).Age ＞ 50 (P =0.012),tumor stage (P =0.015),and simultaneous surgery for portal hypertension (P =0.007) were the independent risk factors for postoperative liver dysfunction.The survival time of patients undergoing simultaneous surgery for portal hypertension was significantly shorter than that of patients undergoing radical gastrectomy only (in Child A patients,P =0.009,in Child B patients,P =0.000).Conclusions Individualized surgical approaches for the treatment of gastric cancer with portal hypertension should be decided by preoperative liver function.Simultaneous management of portal hypertension was not recommended.

Objective To study the regulation mechanism of bone mesenchymal stem cell (MSC)combined co-translation of islets in differentiation of Follicular Helper T cell (Tfh),and its roll on immunotolerence induction in non-obese diabetic (NOD) mice transplantation model.Methods The NOD mice were divided into 4 groups:Group A with islet transplantation alone;Group B with MSC co-transplantation with islets (MSC:0.5 × 106);Group C with MSC co-transplantation with islets (MSC:2 × 106);Group D with MSC co-transplantation with islets (MSC:3 × 106).ELISA was used to test the expression level of diabetes autoantibody GAD65Ab and IAA.Tfh cell count was detected by FACS.Results The survival time of transplantation groups was much longer in MSCs co-transplantation group than islet-alone group;the level of GAD65Ab,IAA and Tfh cell count were much lower in MSCs co-transplantation group than islet-alone group.Conclusion MSC may protect the islet transplants by regulating the Tfh cell differentiation.

Objective To understand how SIRT1 differently regulates oncogenesis in hepatocellular carcinoma (HCC) with wild type and mutant type p53.Methods HCC cell line PLC5 cells (249 site mutated p53),and HepG2 cells (wild type p53) were infected with lentivirus containing shSIRT1.Western blotting was used for signaling pathway detection.Cell growth and proliferation assay,colony formation assay and tumor xenograft assay were performed to test the tumor growth ability of HepG2 cells,HepG2-shSIRT1 cells,PLC5 cells and PLC5-shSIRT1 cells respectively.Results SIRT1 silencing resulted in significant inhibition of cell proliferation in HepG2 cells but stimulating cell proliferation in PLC5 cells (t =3.595,P ＜0.01).Acetylation of p53 was found in HepG2 (HepG2-shSIRT1) and p21 was up-regulated,however,in PLC5 (PLC5-shSIRT1) cells,acetylation of p53 was found but p21 was not induced despite of p53 activation.Silence of SIRT1 resulted in no change of AMPK function in HepG2 cells but a lower activity of AMPK in PLC5 cells (t =4.268,P ＜ 0.01).Conclusions In HCC cell lines the function following SIRT1 activation is largely determined by p53 mutant status.

Objective To investigate the role of staging nutrition(SN) in the treatment of severe acute pancreatitis(SAP). Methods One hundred patients with SAP treated in our hospital since 1997 were randomly divided into two groups: Total parenteral nutrition group(TPN group,50 cases) and staging nutrition group (SN group,50 cases). The curative effects and complications between two groups were analyzed and compared. Results The incidences of total complications,incubation complication,double infection,hepatic function injury,abdominal cavity infection and hospital stay in SN-group were significantly lower than those in TPN-group(all P

Objective To investigate the proper selection of methods of hepatic vascular control during(resection) of liver carcinoma.Methods Ninety-foury cases of liver carcinoma underwent hepatectomy using 4 different types of hapatic vascular control in our hospital.The operative time,amount of intraoperative blood loss,transfusion,and postoperative drainage,changes of postoperative liver function and complications were analyzed and compared between the 4 groups.Results Of the 94 cases,38(40.4%) underwent routine Pringle′s maneuver,34(36.2%) had selective hemihepatic vascular exclusion,18(19,1%) without(hepatic) inflow occlasion and 4(4.3%) had total vascular exclusion during hepatectomies.All tumors were entirely removed and operations were performed smoothly.Postoperative complications occurred 24 case-times and 2 patients(2.1%) died.Conclusions The selection of method of hepatic vascular control during(hepatectomy) for massive liver carcinoma should be comprehensively determined,based on the size and location of tumor,preoperative liver function,diffculty of hepatectomy and findings at intraoperative exploration.Proper method manner of hepatic vascular control is crucial for successful operation and uneventful recovery of the(patient).