0.05).No sign of aseptic loosening or change in implant position was noted.[Conclusion]This short-term study showed that bipolar femoral head arthroplasty seems to be a suitable alternative for primary treatment of displaced femoral neck fractures in patients over 80 years.More attention should be paid to coexisting medical illness(e.g.diabetes mellitus,hypertension,and ischaemic heart disease)and prevention of complications.

Eleven patients underwent acetabulum revision using modified anterolateral approach due to acetabulum loosening but femoral prosthesis in sound fixation following total hip arthroplasty in Department of Joint Surgery,Tianjin Hospital between August 2002 and February 2005. During the mean follow-up of 4.2 years,all 11 patients gained primary stable fixation and good function. One patient underwent another revision due to infection; one developed femoral prosthesis loosening and underwent femoral revision. X-ray of the other patients showed no loosening or dislocation or radiotransparent region surrounding the prosthesis. One patient developed lateral femoral cutaneous nerve injury and relieved 6 months later.

From February 2002 to May 2007,9 cases(9 hips) of periprosthetic fractures during the primary total hip arthroplasty for developmental dysplasia of the hip were selected,including 1 male and 8 females aged 52-69 years.In the primary total hip arthroplasty,femoral prosthesis with the same size as intramedullary reamer and acetabular prosthesis with 2 mm diameter larger than acetabular reamer were used.The pain,function,range of motion and degree of deformity were accessed using the Harris score.The patients were followed for 1-6 years.Among the 9 patients with periprosthetic fractures,4 acetabular fractures were stable which were treated by additional augmentation screws,and 1 fracture was unstable which was treated by structural bone grafting and additional screws.And there was one Vancouver type AG fracture which was treated by cerclage wire,3 Vancouver B1 fractures which were fixed by locking compression plate(LCP) or cerclage wire,and one Vancouver type C fracture which was also fixed by LCP.No component loosening or migration was found in the postoperative X-ray.The mean Harris score was 87.2 at the final follow-up.The results of the study show that during the primary total hip arthroplasty in patients with developmental dysplasia of the hip,the oversize of the acetabular component should be controlled to equal to or less than 2 mm.For patients with severe osteoporosis,acetabular components with the same size to reamer are recommended combined with additional screws,or cemented cup.When an acetebular fracture is found during total hip arthroplasty,we could use additional screws or bone grafting.Once a periprosthetic femoral fracture occurs during the operation,methods of fixation should be selected based on the type of the fracture and stability of the prosthesis.

Objective To investigate the therapeutic effect and the immune function impacts of high intensity focused ultrasound(HIFU) for the treatment of hepatocellular carcinoma.Methods Twenty-five cases with primary liver cancer and 6 cases with metastatic liver cancer were treated with HIFU.The clinical symptoms,AFP levels,color Doppler ultrasound detection,CT and changes of T-cell subsets ( CD3 +,CD4 +,CD8 +,CD4 +/CD8 + ) were recorded before and after treatment.Results After HIFU treatment,among 31 patients,the clinical remission rate was 89.7％ ( 25/29 ).AFP was decreased in 83.3％ ( 15/18 ) of the patients.Color Doppler showed reduced tumor sizes and reduced or disappeared blood supply in most of the patients.CT scan displayed that the density of the target region was decreased and necrosis of the lesions occurred.The percentage of CD3 + and CD4 + cells and the ratio of CD4 +/CD8 + were significantly increased after a period of treatment( P ＜0.05 ).The proportion of CD8 + cells was decreased significantly after a period of treatment ( P ＜ 0.05 ).Conclusion HIFU is an effective technique for the treatment of hepatocellular carcinoma.Meanwhile,it can improve human immune function to certain extend.

Objective To clone the aldehyde dehydrogenase (adhA) gene from Methylovorus glucosotrophus and study its expression,purification and enzymatic characteristics.Methods The adhA gene was amplified and cloned to the expression vector pTIG.The AdhA was successfully expressed with induction in Escherichia coli BL21(DE3).The enzymatic characteristics were investigated by AHMT,and AdhA was purified by Ni+ exchange chromatography.Results AdhA accounted for more than 50% of the total cell proteins,and the purity was about 95%.With methanol as the substrate,the optimal pH of AdhA was 7.0,while the optimal temperature was 30℃.The enzymatic activity of purified AdhA remained about 60% when stored at room temperature for 6 days.Conclusion AdhA from MP688 is expressed in vitro,and methanol is the optimal substrate among all the substrates investigated.

Objective To evaluate the early detection of diabetic cystopathy(DCP)with the technology of noninvasive urodynamics.Methods 70 patients with type 2 diabetes mellitus(DM)and 30 normal control subjects were checked with the technology of noninvasive urodynamics.Based on their disease course of less or mole than 5 years.the DM patients were divided into two groups.Maximal flow rate,average flow rate,the volume leading to first bladder sensation and residual urine volume were measured by using noninvasive urodynamic technology.Results Among the 70 DM patients,34 were detected to have bladder residual urine,so the DCP detection rate was 48.6%.In the patients with DCP,the average residual urine volume Was 7-139 ml(30.1±27.1)ml,while there was no residual urine in the normal control group.As compared with the normal control group,maximal flow rate and average flow rate were decreased in all the patients with DM and those with DCP(P＜0.01).After follow up of the disease,the patients with a course of more than five years of disease control had even lower maximal flow rate and average flow rate.Conclusion Maximal flow rate decrease and bladder residual urine detected with the technology of noninvasive urodynamics may be widely used in early detection and early diagnosis of DCP.

The results of different interventions administered in 118 cases with impaired fasting glucose (IFG) for 3 years were investigated. The rates of transformation of IFG to diabetes mellitus in metformin treatment groups and rosiglitazone treatment groups were significantly lower than that in life style intervention group. This study suggested that metformin or rosiglitazone treatment could effectively reduce transformation of IFG to diabetes as compared with life style intervention.

Senna contains anthraquinones, flavonoids, polysaccharide and volatile oil and other chemical substances, which show the effect of diarrhea, antibacterial, hemostatic, regulating immune function and antioxidation. This article reviewed the Senna chemical composition, pharmacological effects, clinical application and new formulations of drug development, in order to provide reference for the research and clinical application of Senna.

Objective To prepare and characterize specific monoclonal antibodies( McAbs) against the heavy chain of botulinum neurotoxin serotype A ( BoNT/AHc ) .Methods BALB/c mice were immunized with purified BoNT/AHc protein.After the fusion of mouse splenic cells with SP2/0 cells, hybridoma cell lines secreted McAbs against BoNT/AHc. The McAbs obtained were characterized by indirect ELISA, Western blotting and rapid isotypingassay before being used in ELISA to detect interaction sites in McAbs and BoNT/AHc preliminarily.Results Antigen protein BoNT/AHc of high purification was obtained.Four hybridoma cell lines secreting McAbs against BoNT/AHc were screened,named 1A4,3H3, 3H7 and 5H8,respectively.Their titers of McAbs were all above 3.0 ×103 .They were specifically combined with BoNT/AHc protein by Western blotting.The isotype of 1A4 and 3H7 was IgG1(Κ),that of 3H3 was IgM(Κ),and that of 5H8 was IgG2b(Κ).Additive ELISA showed that epitopes recognized by the four McAbs were close.ELISA analysis confirmed the interaction epitopes in McAbs and BoNT/AHc.Conclusion Monoclonal antibodies against BoNT/AHc are prepared and characterized,providing effective tools for studying the neutralizing antibody and antibody epitopes of BoNT/AHc.

Objective To explore the application value of VCT 64-row with 128-layer spiral extremities arterial imaging techniques and methods in the double lower limb artery.Methods 60 patients on lower limbs MSCTA angiography after Saul,flat on intravenous regiment note contrast agents CT angiography,image the maximum intensity projection(MIP),curved planner reconstruction(CPR),volume rendering(VR)after-treatment technology reconstructed vessels.Results All 60 patients showed the lower limb arterial and main branch.Conclusion 64-row helical VCT angiographic with 128-layer could clearly show that lower limb artery and pathological changes,and become main methods of preoperative evaluation and selection for the lower limb artery disease.