ObjectiveTo investigate the inhibitory effect of peroxisome proliferator-activated receptor-?(PPAR?) agonist on mesangial cell(MC) proliferation and extracellular matrix expression induced by angiotensin Ⅱ(Ang Ⅱ).MethodsThe incorporation of 3H-thymidine(3H-TdR) and cell count were used as the measurement of MC proliferation.MC cell-cycle was analyzed by flow cytometry.Mouse primary MC was treated with various concentration of Ang Ⅱ(1,10,100 nmol/L) in the presence or Absence of N-acytosistin(NAC) or rosiglitazone.Transforming growth factor-?1(TGF-?1),plasminogen activator inhibitor-1(PAI-1),and fibronectin(FN) mRNA expression were determined by real time-PCR.Reactive oxygen species(ROS) production was measured by 2,7-dichlorofluorescein diacetate(DCFDA) fluorescence.Results1.One hundred nmol/L Ang Ⅱ increased 3H-TdR incorporation and cell number by 2.14 and 2.32 fold,respectively.Ang Ⅱ-induced MC proliferation was inhibited by PPAR? agonist rosiglitazone with dose-dependent manner in mouse MC.2.One hundred nmol/L Ang Ⅱ stimulation for 24 h induced 48% MC processed to S and G2/M phase.Rosiglitazone significantly blocked Ang Ⅱ increased cell number in S and G2/M phase.3.Rosiglitazone reduced Ang Ⅱ-induced TGF-?1,PAI-1,and FN mRNA expression with dose-dependent manner.4.One hundred nmol/L Ang Ⅱ stimulation for 60 min increased ROS production by 3.85 folds.Rosiglitazone significantly inhibited Ang Ⅱ-induced ROS production.Ten ?mol/L rosiglitazone almost completely blocked Ang Ⅱ-induced ROS production.ConclusionPPAR? agonist rosiglitazone could block Ang Ⅱ-induced MC proliferation and extracellular matrix expression via inhibition of ROS production.

Objective:To investigate the immuno-effects triggered by dendritic cells (DCs) pulsed with Heat-treated lymphoma cells.Methods:Mononuclear cells from healthy human peripheral blood(PBMC) were isolated and DCs were generated in vitro with normal methods.Lymphoma cells were heated (42℃,2 h) and then loaded onto DCs.Immunotypes of DCs and lymphocytes were detected with flow-cytometric analysis.IFN-γ releasing was detected by ELISPOT,lymphocyte cytotoxicity was analyzed by MTT method after mixing with DC reaction.Results:After pulsing DCs with hyperthermia lymphoma cells,CD80~+,CD86~+ and HLA-DR existed higher than those of the control group,IFN-γ releasing and cytotoxicities were also strengthened,but there was no difference between them,cytotoxitic lymphocytes (CTLs) were produced more as CD8~+,CD25~+ and CD56~+ cells by flow-cytometric analysis.Conclusion:Anti-lymphoma immuno-effects could be strengthened by loading DC with hyperthermia lymphoma cells.

Analgesics, Opioid ; poisoning ; Diphenoxylate ; poisoning ; Humans ; Naloxone ; therapeutic use ; Narcotic Antagonists ; therapeutic use ; Poisoning ; drug therapy

[Objective] To evaluate the treatment with total hip arthroplasty(THA)using Zweym?ller system for short females with Crowe-Ⅲ and Ⅳ developmental dysplasia hip(DDH).[Method]From January 2004 to December 2006,thirteen THA procedures were performed in 12 female patients with 13 hips.The age of the patients was from 28 to 62 years old(average 51 years).The height was from 1.48 to 1.55 meters.Based on Crowe classification,8 patients with 9 hips were type-Ⅲ,and 4 patients with 4 hips were type-Ⅳ.before surgery,the discrepancy of lower limbs was from 3 cm to 5 cm.All patieds had severe hip pain and dysfunction.The Harris hip score ranged from 35 to 64 points with 40 points on the average.In all procedures the soft tissue was released entirely,the acetabular component was placed in the true acetabulum without femoral osteotomy.[Result]After operation,the legs lengthened from 2 to 5 cm.During the follow-up of 12 to 36 months(average 24 months),no femoral fracture,femoral or sciatic nerve palsy or loosening was detected except one dislocation according to clinical outcomes and X-ray findings.The Harris score was improved from 60 to 95.There was significant difference between before and after operation(P

Objective To explore the changes of Nogo-A mRNA and Nogo receptor(Ng-R) mRNA expressions in hippocampus of immature rats after febrile seizures(FS).Methods One hundred and twenty-seven male SD rats(15 days) were randomly divided into control group(immersed in 37 ℃ water,n=40)and hyperthermia treated group(immersed in 44.5 ℃ water,n=87).The latter was further divided into febrile control group(n=42) and FS group(n=45) according to whether seizures occurred or not.Each group was further divi-ded into 5 groups according to different therapies(1,3,5,7,10 times treatment).Then 5 cases of the 8 rats were randomly used to observe the expressions of Nogo-A mRNA,Ng-R mRNA in hippocampus by using reverse transcriptase polymerase chain reaction(RT-PCR).Three of the 8 rats were randomly used to observe the changes of neurons and mossy fiber sprouting(MFS) in hippocampus by Nissl and Timm staining.Results 1.No seizures occurred in normal control group.Seizures occurred in 2 rats of febrile control group.In FS group,various seizures occurred such as nodding spasms,tonic seizures,clonic seizures and tonic-clonic seizures,2 rats died of drowning and 3 rats died of status epilepticus.2.The expressions of Nogo-A mRNA,Ng-R mRNA in the immature rats′ hippocampus became up-regulated after the 7th and 10th seizure,significantly higher than those of the other 2 control groups(Pa

Nampt is a rate -limiting enzyme in the mammalian salvaging pathway for the synthesis of NAD that is involved in cell metabolism and proliferation .In recent years,growing research has elucidated that Nampt is correlated to various malignant tumors .It has a complex functions including regulation of energy metabo-lism and genome instability,promotion of proliferation and angiogenesis ,tumor-promoting inflammation and a-voidance of immune destruction .Recent reports indicate that Nampt is highly expressed in gliomas ,and it is close-ly related to the proliferation ,migration,invasion and prognosis of gliomas ,which will provide a new target for the glioma research and therapy .

Objective To explore the effects of alcoholic extracts of traditional Chinese medicines on the post-translational processing and trafficking of tyrosinase.Methods Human YUGEN8 amelanotic melanoma cells were grown in vitro;the cells were incubated with one of the seven traditional Chinese medicines,including Rhizoma Chuanxiong and psoralen.Protein analysis with Western blot,enzymolysis with endoglycosidase H (Endo H),and subcellular localization with laser confocal microscopy were per- formed.The expression,maturity and export from endoplasmic reticulum (ER) of tyrosinase in the treated cells were compared with those in the untreated controls.Results Compared with controls,an approximate- ly 80-kDa,Endo H-resistant tyrosinase doublet,which represented mature glycoform of tyrosinase,was in- creased in melanocytes treated with Semen Cuscutae,and in those treated with Semen Persicae.Within those cells,tyrosinase was distributed outside ER resident protein calnexin.Conclusion Both Semen Cus- cutae and Semen Persicae could induce tyrosinase maturation,stability and export from ER to distal site.

Aged ; Antibodies, Monoclonal ; metabolism ; Carcinoma, Transitional Cell ; metabolism ; pathology ; surgery ; Cystectomy ; Follow-Up Studies ; Humans ; Keratin-7 ; metabolism ; Keratins ; immunology ; Lung Neoplasms ; secondary ; Male ; Urinary Bladder Neoplasms ; metabolism ; pathology ; surgery ; Vimentin ; metabolism

AIM: A new type of unsaturated poly (ester-amide) viz maleic anhydride-phthalic anhydride-propylene glycol-neopentylene glycol-hexane diamine copolymer was prepared by melt polycondensation and characterized.METHODS: To use it as biodegradable bone fixation polymer materials, the flexural strength of unsaturated poly (ester-amide) prepared under different heat treatment conditions was measured after depth cross-linking. The degradation and hydrolysis of the polymer were investigated in phosphate buffer (0.1 mol/L, pH7.4) at 37 ℃ and in 0.1 mol/L NaOH standard solution at room temperature.RESULTS: The results obtained indicate that increasing heat treatment time or temperature can dramatically increase the flexural strength of cross-linked unsaturated poly (ester-amide). The maximum flexural strength of the cross-linked polymer containing 50 wt% of cross-linker was 123 MPa. After degradation 3 months, the flexural strength of the cross-linked polymer that contained 50 wt% of cross-linker and was heated at 195 ℃ for 18 hours could maintain as high as 114.3 MPa.Heat treatment conditions and cross-linker content play an important role to control the mass loss of the cross-linked polymer during the hydrolysis. The polymer exhibits bulk erosion property.CONCLUSION: The preliminary results obtained suggested that the copolymer might be used as bone internal fixation material.

Depending on the meaning and function of the liver in traditional Chinese medicine and modern medicine,this paper explores the important role of liver in the pathogenesis of DM (Diabetes Mellitus,DM).Combined with treatment based on syndrome differentiation and specific case report study,this paper has stressed the importance of treating DM from liver and so to set a sound basis for the systemic treatment based on syndrome differentiation from internal organs for DM.