1.Effect of Recombinant Tissue Factor Pathway Inhibitor 2 Gene on The Invasion of Human Pancreatic Cancer in Vitro and in Vivo
Zhigang TANG ; Zhenyang SUN ; Hejie HU ; Geliang XU ; Jiong CHEN ; Jiansheng LI
Chinese Journal of Bases and Clinics in General Surgery 2004;0(01):-
Objective To investigate the invasion ability of Panc-1 cells in vivo and in vitro after being transfected with tissue factor pathway inhibitor 2 gene(TFPI-2).Methods The expression vector pEGFP-C1-TFPI-2 was transfected into human pancreatic cancer line Panc-1 cells by using liposome.TFPI-2 mRNA and protein of transfected and nontransfected cells were detected by reverse transcription-polymerase chain reaction(RT-PCR)and Western blot respectively.The tumor cells invasive behavior of transfected(Panc-1-TFPI-2)and nontransfected(Panc-1-V and Panc-1-P)cells were assessed in vitro through Boyden Chamber method.The transfected and nontransfected cells were implanted into nude mice to observe its growth and metastasis in vivo.Results Expressions of mRNA and protein of TFPI-2 were confirmed in transfected cells.After TFPI-2 transfection,the number of Panc-1-TFPI-2,Panc-1-V and Panc-1-P cells passing through membrane of Boyden Chamber were 24.4?3.5,61.3?4.1 and 60.2?3.9,respectively.The number of TFPI-2-expressing cells to traverse a Matrigel-coated membrane was obviously decreased compared with that of non-expressing cells,the invasion ability was lower than that before transfection in vitro.The subcutaneous tumor volume of the Panc-1-TFPI-2 group was(438.0?69.8)mm3,the Panc-1-V group was(852.0?102.9)mm3 and the Panc-1-P group was(831.0?78.1)mm3,P
2.Current Status of Multimodal Therapy for Advanced Gastric Carcinoma
Chinese Journal of Bases and Clinics in General Surgery 2004;0(01):-
Objective To review the research advancement of multimodal therapy for advanced gastric carcinoma.Methods The literatures on multimodal therapy for advanced gastric carcinoma in recent years were collected and reviewed.Results The multimodal therapy,such as preoperative chemotherapy,preoperative adjuvant chemoradiotherapy,preoperative interventional chemoradiotherapy for advanced gastric carcinoma was effective because it could increase the rate of R0 resection for the patients with advanced gastric carcinoma.And it can decrease the mortality rate after operation,extend the overall survival time and improve patients' life quality.Conclusion Multimodal therapy is a promising method for the treatment of advanced gastric carcinoma and it should be further developed.
3.Advances in Medical Imaging Evaluation of Fatty Liver
Liming ZHAO ; Ningjing YANG ; Bin SONG
Chinese Journal of Bases and Clinics in General Surgery 2004;0(01):-
Objective To evaluate the value of medical imaging technology in qualitative and quantitative diagnosis of liver steatosis.Methods To describe the current status and advancements of medical imaging technology such as sonography,CT and MRI in qualitative and quantitative diagnosis of liver steatosis,and to contrast their advantages and shortages.Results Sonography could be used as the primary screening and evaluate measures in qualitative and quantitative diagnosis of liver steatosis,and CT was more reliable in quantitative diagnosis,MRI had significant improving with its high sensitivity and specificity.Conclusion Medical imaging technology has significant clinical value in qualitative and quantitative diagnosis of liver steatosis,especially with the help of functional MR imaging techniques such as spectroscopy and chemical shift Gradient-Echo technic.
4.The Application of Comparative Proteomics in Study of Tumor Marker
Shunzhen ZHENG ; Shengquan ZOU
Chinese Journal of Bases and Clinics in General Surgery 2003;0(02):-
Objective The article introduces the present status of the application of comparative proteomics in study of tumor marker. Methods This essay review the present status and advances of the application of comparative proteomics in study of tumor marker through refer considerable literatures about proteome, proteomics and tumor marker. Results Follow the study of human genome deepening; the paradox between the finiteness of genes’ number and stability of genes’ structure and the variety of the life phenomena is more conspicuous. Then, the study of proteomics was pushed to the advancing front of life science research. The application of comparative proteomics to tumor research becomes a hot spot nowadays. Conclusion Screening tumor marker via comparative proteomics is an extremely promising research.
5.Expressions and Clinicopathologic Significances of CA19-9 and CA125 in Benign and Malignant Lesions of Gallbladder
Jieqiong LIU ; Zhulin YANG ; Xiongyin MIAO
Chinese Journal of Bases and Clinics in General Surgery 2003;0(02):-
Objective To study the expressions of CA19-9 and CA125 and their clinicopathologic significances in gallbladder adenocarcinoma, pericancerous tissues and chronic cholecystitis. Methods EnVisionTM immunohistochemistry was used for assaying the expressive levels of CA19-9 and CA125 in the routinely paraffin-embedded sections of specimens from gallbladder adenocarcinoma (n=108), pericancerous tissues (n=46), and chronic cholecystitis (n=35). Results The positive rates of CA19-9 and CA125 were significantly higher in gallbladder adenocarcinoma (49.1%, 51.9%) than those in pericancerous tissues (26.1%, 15.2%) and chronic cholecystitis (14.3%, 5.7%), respectively (P
6.Current Research Advancement of Hepatocyte Transplantation
Chinese Journal of Bases and Clinics in General Surgery 2003;0(02):-
Objective To investigate the application and advancement of hepatocyte transplantation (HCT). Methods Literatures about the advancement of HCT were reviewed and analyzed. Results There have been many novel technologies and advancements in the application of HCT. For example, gene modified cell can be used as seed cell, subcutaneous transplantation can be taken when combined with giant molecule material and the encapsulation preconditioning technique can also carried before operation to improve the rate of survival. Conclusion With more and deeper understanding of hepatocyte transplantation and the development of advanced techniques such as the application of giant molecule, HCT will be extensively used in the clinical treatment of acute and chronic hepatic diseases.
7.Clinical Study of Effects of Targeting Therapy with Iodine-131 Labeled Monoclonal Antibody for Hepatocellular Carcinoma
Chinese Journal of Bases and Clinics in General Surgery 2003;0(04):-
Objective To investigate the clinical effects of targeting therapy with iodine-131 labeled monoclonal antibody for hepatocellular carcinoma(HCC).Methods The related published literatures were reviewed and summarized.Results The reasonable application of targeting therapy with iodine-131 labeled monoclonal antibody could improve the prognosis for patients with HCC especially for some primary HCC.It was used in various kinds of HCC patients with no severe side effects.Conclusion The targeting therapy with iodine-131 labeled monoclonal antibody may be considered as a safe and effective method to treat HCC and an adjuvant therapy for liver surgery.
8.Experimental Study of Fibrin Glue for Preventing and Curing Postoperative Bleeding and Bile Leakage in House-Hold Rabbit Following Partial Hepatectomy
Dong WANG ; Jirun PENG ; Jiye ZHU ; Xisheng LENG
Chinese Journal of Bases and Clinics in General Surgery 2003;0(04):-
Objective To investigate the precautionary effect of fibrin glue on postoperative bleeding and bile leakage when used in partial hepatic resection.Methods House-hold rabbit partial hepatectomy model was prepared and 40 rabbits were divided into sham operation(SO) group(n=10),control group(n=10) and protocol group(n=20) randomly.The SO rabbits received laparotomy only,while both the control and protocol group received partial hepatectomy.Fibrin glue was used in the protocol group following electric coagulation therapy while the control group received electric coagulation therapy only.The animals' diet,weight and adverse effects were observed then,and the celiac drainage volume,levels of hemoglobin(Hg),WBC and TBil in celiac outflow and ALT,AST,LDH and TBil in rabbit serum were checked on schedule after operation.Results The average blood loss volume and operation time in the protocol group were(16.0?2.7) ml and(23.7?2.9) min respectively,which were lower than those in the control group((20.8?3.5) ml and(27.3?2.9) min(P
9.Protective Effect of Peroxisome Proliferator-Activated Receptor ? Activator 15-Deoxyprostaglandin J_2 in Rat Hepatic Ischemia-Reperfusion Injury and Its Mechanism
Xiaofei CAO ; Feng ZHANG ; Wei ZHANG ; Yewei ZHANG
Chinese Journal of Bases and Clinics in General Surgery 2003;0(04):-
Objective To investigate the protective effect of peroxisome proliferator-activated receptor ?(PPAR?) activator 15-deoxyprostaglandin J2(15d-PGJ2) in rat hepatic ischemia-reperfusion injury and its mechanism.Methods The models of 70% warm ischemia-reperfusion injury were established in SD rats,rats were randomly divided into 4 groups: sham operation group,ischemia-reperfusion group,15d-PGJ2 group and 15d-PGJ2+GW9662 group.After reperfusion,serum AST and ALT levels were determined;the liver tissues were removed for measurement of activity of NF-?B and myeloperoxidase(MPO),TNF-? content and expression of ICAM-1.Results Compared with sham operation group,the serum levels of ALT and AST,and the activities of MPO and NF-?B,TNF-? content and expression of ICAM-1 in ischemia-reperfusion group,15d-PGJ2 group and 15d-PGJ2+GW9662 group were greatly improved(P
10.Advances in Techniques of Hepatic Blood Occlusion in Hepatectomy
Chinese Journal of Bases and Clinics in General Surgery 2003;0(04):-
Objective To review the advances in techniques of hepatic blood occlusion in hepatectomy.Methods The related literatures were reviewed and analysed.Results There were many techniques of hepatic blood occlusion.The most frequently used and studied techniques were hemihepatic vascular occlusion and intermittent hepatic inflow occlusion.Hepatic vascular exclusion was employed when hepatic veins and/or vena cava would be damaged.Total vascular exclusion and other techniques were rarely used.Conclusion To reduce blood loss in hepatectomy and make patient safe,based on the situation of the patient,the technique should be ingeniously selected.