ObjectiveTo investigate the expression of midkine(MK) and its relation with angiogenesis, biological features and prognosis of pancreatic carcinoma(PC).MethodsMK expression and microvessel density(MVD) were determined in 52 cases of human PC with immunohistochemistry and results were compared with pathology.ResultsMean MVD of PC was 64?18 and positive expression of MK was detected in 38 cases (73%). The positive rate of MK was significantly lower in cases of without metastasis and at early clinical stage (stageⅠ～Ⅱ) than that with metastasis and at stage Ⅲ～Ⅳ. MVD was significantly higher in MK-positive PC than in MK-negative PC (P

Objective:To explore the inflammatory responses of macrophages treated with Helicobacter pylori. Methods:Cytokines IL-23,IL-10,TNF-α and IL-8 in cell culture supernatant of macrophages stimulated with Helicobacter pylori were determined by ELISA kits,and the expression of intracellular proteins NOS2 and COX2 in Helicobacter pylori treated macrophages was analyzed by Western blot. Then,the apoptosis of Helicobacter pylori stimulated macrophages was detected by flow cytometry. Results:The secretion of cytokines IL-23,IL-10,TNF-α and IL-8 in the culture supernatant of Helicobacter pylori treated macrophages increased significantly (P<0. 05),and the expression of NOS2 and COX2 was enhanced evidently(P<0. 05). Meanwhile,helicobacter pylori could induce the apoptosis of macrophages obviously ( P<0. 03 ) . Conclusion: The inflammatory responses of macrophages treated with Helicobacter pylori would be promoted to inhibit or kill Helicobacter pylori,furthermore,Helicobacter pylori could induce the apotosis of macropha-ges.

Long terms of chronic pain may induce emotional disorder such as depression,anxiety and aversion.It is worthy of studying the mechanism and therapy on pain emotional disorder.The animal model is important in basic researches,and the quantitative evaluation methods on the psychiatric factors are gradually applied in the pain research.The methods of evaluating the psychiatric disorder of pain are discussed in this paper,which will provide theory basis in the relevant fields.

Objective To discuss the pathogeny,treatment and prophylactic measures of postcholecystectomy syndrome (PCS).Methods The clinical data of 150 patients with laparoscopic PCS in our department from October 2000 to March 2009 were analyzed.Results Etiological factors were found in 131 patients:one hundred and twelve cases were due to the reasons of biliary system,including bile duct residual stones after cystic resection,the injury bile duct stenosis,a long residual cystic canal,nipple benign stricture,bile duct tumor etc;Nineteen examples were due to other reasons,including gallbladder stone merger reflux gastritis,gastroduodenal ulcer,diverticulum beside duodenal nipple,and so on,which resulted in the symptoms un-release after cystic resection.Nineteen cases were not found organic lesion.In ones whose etiological factors were definite,117 cases were treated with different surgeries according to different etiological factors;another 33 cases were treated with conservative treatment.Total 145 cases were followed up,and 139 cases in them were cured or relieved at different degrees.Conclusion Careful preoperative examination,normalized operation avoiding damaging bile duct and leaving behind bile duct stones can effectively prevent laparoscopic PCS.

The survey of the soluble IL-2 receptor (sIL-2R) level in the sera and the membrane IL-2 receptor (mIL-2R) expression on the peripheral blood mononuclear cells (PBMCs) from 47 cases of late schistosomiasis japonica was reported. The measurement for sIL-2R was done with the double antibody sandwich ELISA. Indirect immunflurescence was performed in the measurement for mIL-2R. The levels of sIL-2R in sera from 47 patients with late schistoso-miasis was found to be higher than that in control (P

Objective To evaluate the effectiveness of immediate quantitative coronary angiography (QCA) analysis in percutaneous coronary intervention (PCI). Methods The parameters of QCA and conventional methods before and after PCI were compared and statistics was performed by using t test or ANOVA methods. Results One hundred and two patients were enrolled in our study. Significant differences between QCA and conventional methods were found in evaluation of lesion length [ ( 22.9 ± 8.9 ) mm vs (24. 8 ± 10. 6) mm,t = 9. 63, P < 0. 05 ], stenosis diameter [ (3.0 ± 0.4 ) mm vs (2. 9 ± 0. 7) mm, t = 6. 31, P < 0. 05 ] and stenosis area [ ( 87. 8 ± 10. 7 ) mm2 vs ( 85.0 ± 12.9 ) mm2, t = 2. 54, P < 0.05 ], and also in different vessels. Stenosis diameter and stenosis area after stenting in target lesion were lower than the international standards. Conclusion Immediate QCA analysis can be effective in directing stent implantation.

Objective To discuss the clinical value of combined antegrade and retrograde technique of laparoscopic cholecystectomy in prevention of bile duct injury.Methods Clinical data of 613 patients who underwent laparoscopic cholecystectomy with combined antegrade and retrograde technique from March 1991 to June 2006 were analyzed retrospectively.Results Cholecystolithiasis with atrophy of gallbladder was found in 121 cases,acute and subacute cholecystitis in 432 cases,cholecystolithiasis with chronic cholecystitis in 42 cases and polyps of cholecyst in 18 cases.Nine cases were converted to laparotomy(5 cases of cholecystolithiasis with atrophy of gallbladder and 4 cases of subacute cholecystitis).The average operation time was 43.5 minutes.Bile leakage occured in only 1 case after operation and fully recovered after 3 days of drainage,and all the other cases had smooth recovery with no bile duct injuries or serious complications such as haemorrhage,infection or death.The mean hospitalization time after operation was 5.5 days.Conclusions The application of combined antegrade and retrograde technique can increase the success rate of laparoscopic cholecystectomy,and reduce the incidence of injuries of bile duct,especially in those patients with inadequate exposure or anatomical variation of Calot′s triangle.

Objective To evaluate the effect of urapidil on myocardial reperfusion and cardiac function during primary percutenons coronary intervention (PCI) in acute myocardial infarction (AMI) patients.Methods 54 AMI patients undergoing primary PCI were randomized to intracoronary urapidil (n=27) and nitroglycerin (n=27) group.When blood flow grade TIMI-l or more appeared in the infarct related artery (IRA) before or after percutenous transluminal coronary angioplasty (PTCA),urapidil (12.5 mg) or nitroglycerin (0.2 mg) was given intracoronary and then stents were implanted as needed.TIMI blood flow,no reflow/slow floW,corrected TIMl frame count (cTFC),myocardial blush grade (MBG),ST resolution (STR) on ECG, peak of creatine kinase (CK),cardiac troponin T (cTnT) were observed before and after PCI.Left ventricular ejection fraction (LVEF) was measured 24 hours and 30 days after PCI and MACE including death,reinfartion,revascularization in hospital were observed. Resuits Urapidil group compared to the nitroglycerin group,cTFC (18.38±3.30 vs.21.44±4.26,P=0.005) decreased and MBG (P=0.040) improved.STR in the urapidil group improved significantly compred to the nitroglycerin group (93% vs.70%,P=0.038).LVEF of 24 hours and 30 days after PCI in the urapidil group was higher than that ofthe nitroglycerin group (0.55±0.05 vs.0.52±0.06,P=0.021 and 0.58±0.06 vs 0.54±0.06,P=O.041,respectively).Peak CK (1895.26±1239.02 vs.1269.96±515.84,P=0.021) and peak TnT (5.81±5.27 vs 3.64±2.35,P=0.050) in the urapidil group decreased more significantly than that of the nitroglycerin group.No difference of MACE was found in the two groups.Conclusion Intracoronary urapidil administration adjunct to primary PCI in AMI ameliorates coronary blood flow and myocardial perfusion, improves ventricular function,and reduce the infarct size and does not incllase the incidence of complications during hospitalization.

Objective To clone and express a high mobility group box 1(HMGB1)protein of Schistosoma japonicum(Main-land strain)and analyze its function. Methods The DNA fragment of open reading frame encoding Sj HMGB1 protein was ampli-fied by RT-PCR from the mRNA of S. japonicum worms,then it was subcloned into the expression vector pET28a(+)to form the recombinant expression plasmid SjHMGB1-pET28a. The recombinant expression plasmid was transformed into the component E. coli BL21(DE3),and the tranformant containing recombinant expression plasmid was induced with IPTG to express the recombi-nant protein SjHMGB1. The recombinant SjHMGB1 protein was purified by affinity chromatography with nickel chelating affinity chromatography agarose gel. The Gel retard experiment and animal immunization were performed to analyze the DNA binding ca- pacity and the immunologic property of recombinant SjHMGB1. The expression levels of HMGB1 in different life cycle stages of S. japonicum were analyzed by Western bloting and RT-PCR. Female ICR mice were immunized with the recombinant SjHMGB1 pro-tein and infected with 45±2 cercariae of S. japonicum after three immunizations. Forty-two days post-infection,the worms and eggs of S. japonicum were recovered from the portal vein and liver tissue,respectively. The worm and egg reduction rates were calculat-ed respectively. Results A 530 bp of specific DNA fragment was amplified from mRNA of S. japonicum by RT-PCR,which was the open reading frame(ORF)encoding SjHMGB1protein confirmed by DNA sequencing analysis. The recombinant expression plasmid SjHMGB1-pET28a was constructed by cloning the ORF of SjHMGB1 into a expression vector pET28a(+). The bacterium transformants containing the recombinant plasmid expressed a soluble recombinant protein about 28 kDa after induced by IPTG, and the recombinant SjHMGB1 protein was purified by nickel chelating affinity chromatography. The gel retard experiment showed that the recombinant SjHMGB1 protein could bind to both supercoiled DNA and linear DNA,and the recombinant protein immu-nized mice produced high titers of antiserum IgG. Western bloting indicated that the recombinant SjHMGB1 protein was recognized specifically by the S. japonicum-infected mice serum. Above results showed that the recombinant SjHMGB1 protein possessed both functional activity and immunogenicity as the natural protein. RT-PCR and Western blot results showed that SjHMGB1 was abun-dantly expressed in the adult and egg stages whereas barely detectable in the cercaria stage. The immune protection experiment showed that the recombinant SjHMGB1 induced mice to produce high titers of specific antibody IgG but failed to conduct an effec-tive immune protection against S. japonicum. Conclusion The gene encoding HMGB1 from S. japonicum and the soluble recombi-nant SjHMGB1 protein with natural functional activity are obtained,and the recombinant SjHMGB1 has a high immunogenicity but is not able to induce an effective immune protection against S. japonicum.

Multiple sclerosis (MS) is a disease characterized as inflammatory demyelinating of the central nervous system,which is the main cause of non-traumatic neurological disability in young and middle-age adults.The main manifestations of MS are memory and information processing speed,executive function and other cognitive impairments.MS associated with memory impairment (MSMI) is often overlooked because of the occult onset,which seriously affecting patients' life quality.In recent years,with the rapid development of neuro-functional imaging,MRI has become an important method to observe and diagnose MS,providing imaging evidence for diagnosis of MSMI.The clinical and MRI research progresses of MEMI were reviewed in this article.