Objective To study and observe the application effect of debridement adhesive combined with comfeel silver ion dressing in the treatment of wound after the total cystectomy.Methods 90 patients with total cystectomy in Cixi People's Hospital from July 2014 to June 2016 were selected as the research object, and all the patients were randomly divided into control group 45 cases and observation group 45 cases, the control group were treated with conventional treatment of postoperative wound, the observation group were treated with debridement adhesive combined with comfeel silver ion dressing on the treatment of control group, then the infection rates, degree of edema and local comfort, life quality and local microcirculation state before and after the intervention of two groups were respectively analyzed and compared .Results The infection rates of observation group were higher than those of control group, the degree of edema and local comfort, life quality and local microcirculation state after the intervention were all significantly better than those of control group, the difference was all statistically significant ( P <0.05 ).Conclusion The application effect of debridement adhesive combined with comfeel silver ion dressing in the treatment of wound after the total cystectomy is better , and it has active role for the improvement of discomfortableness and microcirculation state.

Objective TNF-related apoptosis-inducing ligand(TRAIL)was a new member of TNF family.It could quickly inactivate tumor cell originated from different tissues but no effects on normal tissue in vitro.Osteosarcoma was the most common primary malignant bone tumor with the survival rate of 5years no more than20%after simple surgical management.The induced apoptosis and selective cytotoxicity of human soluble TRAIL for MG -63cell line were investigated in order to explore the feasibility of sTRAIL in clinical treatment of osteosarcoma.Methods sTRAIL-mediated cytotoxicity by MTT assay in MG-63osteosarcoma cell line,MRC-5human diploid lung cell line and L-02fetus hepar cell line were assessed,apoptotic cellular morphological transformation by phase contrast microscope and electron micro-scope was observed.The expression of TRAIL receptors mRNA in the cell lines was examined by RT -PCR.The apoptotic rates of MG-63cell line were shown by flow cytometry.Moreover,the apoptosis of MG-63cell line induced by sTRAIL was confirmed by terminal-deoxynucleotidyl transferase mediated nick end labeling(TUNEL).Results MG-63,MRC-5and L-02cell lines were treated for 24hours with dif ferent concentrations of sTRAIL and the inhibitive rates of sTRAIL were evaluated with MTT assay,the in hibitive rates of 500ng /ml,1?g /ml ,2?g /ml and5?g /ml TRAIL inducing MG-63osteosarcoma cell line were10.1%,24.3%,50.6%and more than95%respectively.By flow cytometry,an obvious apoptosis peak ahead the diploid peak was obtained when MG-63cell line incubating with2?g/ml TRAIL for 6hours,howev er,the consequences of MRC-5and L-02cell line were non-differentiated.Therefore,MG-63cell line was significantly sensitive to sTRAIL-mediated apoptosis,but MRC-5and L-02cell line were resistant to sTRAIL-induced cell death.Under phase contrast microscope,when MG-63cell line were treated by sTRAIL,some cells began to became small and round in3to8hours.In24hours a large number of cells exfoliated and drifted in culture medium.Moreover,karyopyknosis and crescent aggregation of chro-matin were observed by electron microscope.By RT-PCR,the expression of TRAIL-R1,R2and R3but not R4mRNA on MG -63and MRC -5cell line were observed,and there were the expression of TRAIL-R1,R2,R3and R4mRNA on L-02cell line.In TUNEL assay,the nucleus of the apoptotic cells became brown or yellow.Conclusion TRAIL is able quickly to kill MG-63osteosarcoma cell line in vit-ro.Fur thermore,TRAIL is non significant cy-totoxic for normal tissue.TRAIL or TRAIL com bined with chemotherapy and radiotherapy is a potential and valuable proposal for clinical treatment of osteosarcoma.

Objective To evaluate the efficacy and safety of use of platelet membrane glycoprotein (GP) Ⅱ b/Ⅲ a inhibitor tirofiban for percutaneous coronary interventional (PCI) in elderly patients with acute ST segment elevation myocardial infarction (STEMI).Methods A total of 120 elderly patients who suffered from STEMI and underwent PCI were selected from July 2007 to November 2009.The patients were randomly assigned to control group, standard-dose tirofiban group and low-dose tirofiban group.We observed coronary blood reflow, the bleeding complication, coagulation factor(TF,vWF) and cell adhesion molecular(sICAM-1 and sVCAM-1).Results Total 116 patients accomplished this study (control group: 38 cases; standard-dose group: 39 cases; low-dose: 39 cases).The percentages of TIMI 3 flow after PCI were higher in the two tirofiban groups than in control group (P<0.05).The incidences of bleeding complications in both tirofiban groups (12.8%,5.1%) were higher than that in control group (2.6%, P<0.05).The concentration of TF, vWF,sICAM-1 and sVCAM-1 were lower in both tirofiban groups than in control group(P< 0.05).Conclusions GP Ⅱ b/Ⅲ a inhibitor tirofiban can benefit the elderly patients with STEMI referred for PCI therapy, low-dose tirofiban may offer almost the same level of efficacy as standard-dose, with less associated bleeding.

BACKGROUND: At present, there is little related report about producing a whole-kidney acellular matrix (ACM) scaffold in rats using perfusion. The cellular biocompatibility of the ACM is poorly understood. OBJECTIVE: To produce a whole-kidney ACM scaffold in rats by perfusion, to evaluate the cytocompatibility of ACM with the L929 cells in vitro, and to assess the possibility of ACM as the cytoskeleton and tissue-engineered urinary organ construction. DESIGN, TIME AND SETTING: An in vitro observation was performed at the Central Laboratory of Zhujiang Hospital, Southern Medical University from February to May 2009. MATERIALS: Kidneys were obtained from 12-week-old Whista rats, while ureter, renal veins and renal artery were reserved. Intravenous catheters were inserted through renal arteries to establish channels for perfusion. Whole-kidney retrograde perfusion was performed with successively heparinized PBS, 1% SDS, deionized water, 1% TritonX-100 and antibiotic-containing PBS under a pressure of 9.81 kPa to prepare whole-kindney acellular matrix scaffolds. METHODS: ① Samples were randomly divided into blank group (without any cells), negative control group (culture media), experimental group (rat kidney ACM leaching liquor), and positive control group (culture media containing 0.64% phenol). L929 cells in the logarithmic phase were seeded in 96-well plates at the density of 4×10~3/well, with 5 wells in each group. At 24, 72, and 120 hours after incubation, cells were stained with MTT method to detect absorbance at 490 nm and calculate relative growth rate. ② Control group (culture medium), experimental group (rat kidney ACM leaching liquor), and positive control group (culture media containing 0.64% phenol) were set up to detect cell apoptosis at 48 hours after culture using flow cytometry. MAIN OUTCOME MEASURES: Microstructure of the scaffold, cytotoxicity and cell apoptotic rate. RESULTS: After SDS and TritonX-100 union processing, reticulate structures made of basilar membrane and collagen were shown under scanning electron microscope rather than normal structures of cells. At every time intervals (24, 72, and 120 hours), there was no significant difference in the absorbance between experimental group and negative control group (P > 0.05). The grade of the cytotoxicity of the ACM was .0-1. There was no significant difference in cell apoptotic rate between experimental group and negative control group (P > 0.05). CONCLUSION: The whole-kidney acellular matrix scaffolds in rat by perfusion have good biocompatibility.

In order to investigate the strength, structure and cell cytocompatibility of injectable thermosensitive chitosan (CS)/poly(vinyl alcohol) (PVA) composite hydrogel, chitosan hydrochloride solution was transferred to a neutral pH and mixed with different proportions of PVA, then the gelation time and strength of these different hydrogels were tested and spatial structures were observed under a scanning electron microscopy (SEM) after freeze-drying. The cytocompatibility of the hydrogels was evaluated through cytotoxicity test and three-dimensional culture with bone marrow mesenchymal stem cells. The results showed that the CS/PVA solution kept in liquid state at low temperature (0-4 degrees C) and turned into transparent elastomer about 15-20 min at 37 degrees C. Gelation time was prolonged, the strength increased and porous structure became dense with the PVA content increased in the mixed hydrogel. The cytotoxicity grades of these gels were from 0 to 1. Rabbit bone marrow mesenchymal stem cells could survive and proliferate in the gel within 3 weeks, and the gel had good cytocompatibility. It was concluded that thermosensitive CS/PVA composite hydrogel not only has interpenetrating network structure and better mechanical strength, but also has good cytocompatibility, and may be used as an injectable scaffold for tissue engineering.

In order to improve the teaching quality of seven-year program courses,and by adopting LBL,PBL and CBL,we develop a comprehensive teaching mode helpful to the develop-ment of students.This teaching mode,which has better teaching effect than the traditional one,can pay attention to teaching purposes,excitate the students'learning potential,lead them to study more independently.

Objective To assessed the ability of FK506 and antilymphocyte serum(ALS) to induce mixed chimerism and tolerance for knee composite tissue allograft in rabbits without chronic immunosuppression. Methods Male Flap-eared rabbits were used as donors,and female New Zealand white rabbits were used as recipients. Vascularized heterotopic knee allotransplantation was performed. Treatment consisted of ALS(1 ml/kg) only,FK506(0.5 mg/kg) only and a combination of FK506 and ALS which were administered 24h before transplantation. ALS was administered intraperitoneally every day in the first three days. FK506 was administered gastric intubation every day for fifteen days. Survival times of knee allografts were observed. Donor specific hematopoietic chimerism and histology sections were tested. Results Survial time of knee allografts with ALS single was(17.4?1.8)d,and(23.8?1.5)d with FK506 single,(40.4?2.9)d with FK506 and ALS,contrasting with(13.6?0.8)d of control. Chimerism rate show a stabilization of 3 weeks above 10% after protocol discontinue in groups with FK506 and ALS. Conclusions Short-term administration of FK506 and ALS in this ways prolong survival time of vascularized knee allograft in rabbits and could maintain mixed chimerism and tolerance for 3 weeks.

Objective To evaluate the clinical significance of peripheral atheral atherosclerosis after treatment by folicacid in combination with mecobalarain in uremia patient using vascular ultrasound.Methods 99 cases of uremia patients with carotid atherosclerosis were treated with folie acid tablets and mecobalamin tablets for six months.The carotid intimia-media thiclmess(IMT),total plaque area,numbers and ultrasound types of carotid atherosclerotic before and after treatment were observed.Results After six months,carotid IMT became tinner significantly,and the totsl plaque area decreased(P＜0.05).The ultrasound types of carotid atherosclerotic plagues have changed after six montha.and the plaque numbers decreased significantly(P＜0.05).Conclusion Threatment by folie acid combination with mecobalamin in uremia patients maybe helpful to the progression of carotid athereaclerotie disease.

Objective To investigate the composite of chitosan(CS) and polyvinyl alcohol (PVA) as scaffold carrier for rabbit chondrocytes nurture and growth.Methods The third passage of chondrocytes were seeded in CS/PVA gel scaffold and 24,48 and 72 h after which cytoactive and toxicity were determined by MTT respectively.After one,two and three weeks,the growing status and morphology of chondrocytes in CS/PVA gel were observed with scaning electron microscope (SEM) and laser confocal scanning fluorescence microscope (LCSM).Results The third passage of chondrocytes in CS/PVA gel scaffold remained high proliferation ability.MTT measuring cell activity and virulence,the result showed that the number of cells obviously increased with the time,with statistical significance of difference between each groups (P＜0.05),without side effect to cells by the material.Observation of scaning electron microscope and confocal laser scanning fluorescence microscope showed that chondrocytes grew well with the scaffold of CS/PVA gel.Conclusion CS/PVA mixed gel material can be used as scaffold for rabbit chondrocytes growing for repairing cartilages defect in tissue engineering.

ObjectiveTo observe the effect of donor liver pretreated by breviscapine on liver transplantation ischemia/reperfusion injury in rats. Methods SD rats served as liver donors and recipients (n =48 each).The recipients were divided into four groups by random number table.The donors in groups A and C were not pretreated with breviscapine,but those in groups B and D were pretreated with 20 mg/L Breviscapine.The cold ischemia time in donor livers of groups A and B was 30-40 min,and that in groups C and D was 12 h. Clotting function, liver function, serum thrombomodulin,caspase3,and relative activity of NF-kB after liver transplantation were assessed,and the pathological changes and TUNEL apoptosis staining were observed.ResultsThe mortality in groups C and D was 40.0％ (8/20) and 29.4％ (5/17),respectively (P＞0.05).There were no significant changes in coagulation function in all groups after operation. The liver function was improved,pathological lesions were alleviated,and apoptosis rate,serum TM,caspase3 expression and activity of NF-kB in the liver tissues of group D were significantly decreased as compared with group C at 3rd day after operation (P＜0.01),but all these parameters in group B had no significant change compared to group A.ConclusionPretreatment of donor livers with breviscapine can reduce the ischemia/reperfusion injury and apoptosis after liver transplantation in rats probably by inhibiting the apoptosis-related pathway and alleviating the damage to the endothelial cells of the liver microcirculation.