0.05).[Conclusion]The stability of the single - level anterior cervical intervertebral decompression and fusion with plating Uniplate is satisfactory.Uniplate is valuable in clinic,furthermore,it is relatively simple to operate.

Objective To set up rodent ankylosing spondylitis model. Methods Recombinant natively folded versican G1 domain(VG1) and FCA were injected into BALB/c mice to induce spondylitis and sacroiliitis. Spondylitis and sacroiliitis were determined by pathological examination. Results It was shown that immunity to recombinant VG1 resulted in spondylitis in the lumbar spine and sacroiliitis in 35 0% and 12 5% mice respectively. Accumulation of mononuclear cells was observed in spinal ligaments adjacent to the intervertebral disc, the intervertebral disc and the sacroiliac joints. No clinical peripheral arthritis was observed. Conclusion These observations suggest that immunity to human VG1 is involved in the induction of experimental spondylitis and sacroiliitis in BALB/c mice, which will do some help to probe the pathogenesis of human ankylosing spondylitis

Objective To study the role of transforming growth factor-?1(TGF-?1) and bone morphogenetic protein 2 (BMP2) in the ankylosing spondylitis, and to evaluate whether synovial levels of TGF-?1/ BMP2 mRNA and TGF-?1/BMP2 protein expression correlate with disease activity and macroscopic observation during arthroscopy. Metheds TGF-?1/BMP2 mRNA and protein were detected by in situ hybridization and immunohistochemistry.The vascular morphology of synovial membrane was assessed for vascular morphology, tortuous vessels, straight vessels, vascular density, synovial hypertrophy, by 2 blinded observers and Reece's method using a validated VAS methods. They were significantly higher in AS than that in RA in different synovial regions. Results TGF-?1 mRNA and TGF-?1 expression were significantly higher in early AS than that in early RA in perivascular region and sublining interstitial tissue. BMP2 mRNA and BMP2 expression were significantly higher in AS than that in RA in different synovial regions.No significant relation was found between TGF-?1/BMP2 expression and CRP/ESR/platelet count in early AS. A positive relation was found between the TGF-?1 and synovial hypertrophy in synovium lining layer region, and between TGF-?1 and straight vessels,vascular density in perivascular region, and between BMP2 and synovial hypertrophy in sublining region in early AS. Conclusion Expression of TGF-?1 mRNA and TGF-?1 protein is higher in AS synovial tissue than that in RA. BMP2 mRNA and BMP2 expression are significantly higher in AS than that in RA.

Objective To evaluate the value and feasibility of Microsim medical simulation training system in medical students' clinical thinking training. Method 96 students of 5-year program of medicine of Grade 2009 and Grade 2010 were the research object. These students were randomly divided into two groups (group A:After 3 weeks' clinical practice in respiratory medicine, taking 1 week Microsim training. group B: Taking 4 weeks clinical practice in respiratory medicine. Each group has 48 students.). The examination and teaching satisfaction of the two groups were observed after the end of the internship. SPSS 17.0 statistical software was used to analyze the collected data (measurement data matching t test, counting data by chi-square test). Results The Microsim system score: group A was (89.37±7.18), group B was (61.95±15.34). The difference between groups was statistically signifi-cant. The following scores suggested the assessment of students' ability of clinical thinking: ability to analyze problems [group A (89.95±4.02) vs. group B (75.51±6.34)], the ability to deal with the prob-lem [group A (78.81±8.09) vs. group B (59.67±9.33)], treatment scheme [group A (86.74±6.59) vs. group B (70.39±7.05)] and the treatment effect [group A (88.61±8.16) vs. group B (63.54±11.48)]. In these aspects, the two groups had statistically significant difference, but communication [group A (82.47 ±5.23) vs. group B (84.09 ±3.72)] had no statistically significant difference between the two groups. 89.6% (43) of the participants believed that the Microsim medical simulation training system could significantly improve the clinical thinking ability, but only 58.3% (28) of the students believed that the basic theory of knowledge could be consolidated. Conclusion Microsim medical simulation training system can improve the students' ability of clinical thinking and clinical comprehensive treat-ment ability. It can be used as an effective complement to clinical practice teaching.

Objective To evaluate the hemocompatibility of polydioxanone(PDO)bioabsorbable stents.Methods Whole blood clotting time,prothrombin time(PT),activated partial thromboplastin time(APTT),platelet adhesion and hemolysis were used to evaluate the hemocompatibility of PDO bioabsorbable stents,and the results were compared with those of 316L stainless stents which are widely used clinically.Results The anticoagulant property of PDO bioabsorbable stents was similar to that of 316L stainless stents.Both PDO bioabsorbable and 316L stainless stents were not prone to activate blood coagulation factors.Compared with 316L stainless stents,PDO bioabsorbable stents had weaker platelet adhesion and activation.Hemolysis ratios of two groups were less than 5%.Conclusions PDO bioabsorbable stents had good hemocompatibility in vitro.

Objective To investigate spinemagnetic resonance imaging(MRI) findings in patients with axial spondyloarthritis (SpA) and to analyze the correlation between imaging and clinical manifestation.Methods The clinical data of patients with axial SpA were recorded.All patients underwent whole spine MRI scanning.The MRI findings of spinal involvement were explored.Moreover,the correlation between lesions in spinal MRI and Bath Ankylosing Spondylitis Disease Activity Index(BASDAI),Bath Ankylosing Spondylitis Functional Index (BASFI),Bath Ankylosing Spondylitis Metrology Index (BASMI),nocturnal pain visual analogue scale (VAS) score,back pain VAS score,global disease activity VAS score,Ankylosing Spondylitis Disease Activity score (ASDAS),erythrocyte sedimentation rate,C-reactive protein was analyzed.Results Thirty-three patients with axial SpA were included in this study.The image abnormalities of the spine were confirmed in 29 axial SpA patients by MRI,including Romanus lesion,Andersson lesion,the inflammation of facet joints and syndesmophyte.In correlation study,BASMI was positively correlated to the numbers of acute Romanus lesions,chronic Romanus lesions,chronic Andersson lesions and whole spinal lesions(r =0.440,P＜0.05; r =0.483,P＜0.05; r=0.421,P＜0.05; r=0.589,P ＜ 0.05 respectively).There was a statistically significant correlation between chronic Andersson lesions and BASFI(r =0.392,P ＜0.05).But no significant associations were found between MRI lesions and other clinical findings.Conclusions MRI lesions in axial SpA were associated with findings reflecting the spinal function,which can better guide the clinical treatment.

OBJECTIVE:To prepare an intramyocardial bilayered porous biodegradable drug delivery stent and to evaluate its effects on myocardial channel after transmyocardial revascularization (TMR).METHODS:A biodegradable drug delivery stent was prepared by using poly (ε-caprolactone) (PCL),bovine serum albumin (BSA)and poly (D,L-lactide-co-glycolide) (PLGA).The levels of BSA in stent and released in vitro were determined by the Coomassie brilliant blue assay.The mechanical strength of stent was tested by universal material testing machines.Porcine models of chronic myocardial ischemia were created to evaluate the effects of this stent on myocardial channel after TMR,RESULTS:Each bilayered porous stent could carry 10 mg BSA and release about 80% of BSA after 30 days.The stent diminished 80% of initial scale under the stress of 1.2 MPa.It could keep myocardial channel patency after TMR.CONCLUSION:An intramyocardial bilayered porous biodegradable drug delivery stent was successfully prepared.It could sustain the pressure from the heart and maintain myocardial channel patency after TMR.

BACKGROUND: Studies have shown that basic fibroblast growth factor has effects on stimulating vessel regeneration and collateral reconstruction. However, administration was performed mostly by peripheral vein, left atrium or percutaneous coronary intervention, and it is difficult to achieve an effective therapeutic concentration in the local myocardium. OBJECTIVE: Based on the property of poly(D, I-lactic-coglycolic acid) (PLGA), to investigate outcomes of inducing neovascularization in the myocardium in combination of basic fibroblast growth factor (bFGF) by ensuring target release of protein growth factor in local tissue. METHODS: PLGA and bFGF were dissolved in dichloromethane. This liquid mixture was rolled into the form of a hollow tube (3.0 mm outer diameter, 2.8 mm inner diameter, 0.1 mm thick, 10 mm length) for further use. The middle third of the left anterior descending coronary artery of mini-swines was ligated, and the local myocardium became dark purple. After the successful establishment by abnormal regional wall motion in the cardiac apex at anterior wall using ultrasound, the mini-swines were assigned to channels and bare scaffolds (BS) group and channels and bFGF-incorporating scaffolds (FS) group. The scaffold was implanted in the myocardium using self-made hollow bit. At 6 weeks, the number of proliferative cells was quantified by immunohistochemical staining. New vessels were quantified utilizing Image-Pro Plus software package in both groups. Quantitative analysis of changes in mass defect percentage was performed by Emory Cardiac Toolbox software combined with single-photon-emission computed tomography. RESULTS AND CONCLUSION: At 6 weeks, number of proliferative cells and the density of new vessels were significantly increased in the FS group compared with BS group(P<0.001). Single-photon-emission computed tomography illustrates that MDP was significantly lower in the FS group compared with the BS group (P < 0.001). Results have suggested that PLGA scaffolds that incorporate bFGF were able to induce angiogenesis and enhance blood-flow perfusion.

This paper studied the development stages in terms of the public nature of public hospitals in China and analyzed the causes for their weakened public benefits.It proposed the principle of government guidance,achieving government purchasing of healthcare services as the roadmap,as well as building and improving the service purchasing system,performance appraisal system,and payment review system along with supervision system.These measures are designed to make public hospitals in their public benefit nature with scientific system design,powerful institutional guarantee,and efficient execution strategies.

Objective To improve the understanding of severe anaphylactic reactions to infliximab retreatment. Methods Delayed hypersensitivity to infliximab in two patients with ankylosing spondylitis who had previously received infliximab and resumed after discontinuation over 4 years were reported and the related literatures were reviewed. Results Two patients ( 1 male, 1 female ) who were diagnosised with ankylosing spondylitis for more than 10 years, both individuals had received infliximab treatment during a clinical trial approximately 4-5 years prior to further therapy. On day 6 after subsequent infusion, one patient had pruritic skin rash covering her whole body, followed by flustered, dyspnea, hypotension and anaphylactic shock, she was successfully treated with epinephrine and glucocorticoid. Another patient experienced a skin rash and itching 9 days after reinfusion, he was successfully treated with antihistaminics.Conclusion A distant infliximab retreatment is associated with high rates of reinfusion reactions, including fever, urticaria, myalgia, arthralgia,even hypotension, dyspnea, laryngeal edema and anaphylactic shock.We recommend careful monitoring of those patients who receive infliximab retreatment, particularly after a lengthy interval.