OBJECTIVE:To observe the effect of the side-hole hollow bone cement nail on promoting bone fracture healing. METHODS:This experiment was performed in the Third Hospital of Hebei North College from July 2006 to December 2008. Femoral neck samples were obtained from 60 adult corpses of which the patients were dead one year at most with the mean age of 70 years. X-ray examination showed a significant osteoporosis,but no other abnormalities. Hollow nail was provided by Sanyou Medical Apparatus Co.,Ltd.,Shanghai; self-cohesion methyl methacrylate bone cement was provided by Dental Material Factory,the Second Medical University of Shanghai. In the maximal axial pulling-out force group,the hollow nails were directly implanted into 10 femoral neck samples after drilling at the axial center. The polymethyl methacrylate bone cement was inserted into other 10 femoral neck samples after drilling at the axial center,and the side-hole hollow nail were then implanted. The pulling out experiment was performed by AGS-10KN material testing machine to measure the maximal axial pulling-out strength of hollow nail and the maximal loading when the nail was loose during anti-bending cycle experiments. RESULTS:① The maximal axial pulling-out force of 10 femoral neck samples implanting the hollow nail was 471.5-1 070.5 N,with the mean value of (855.0 ? 207.5) N; the maximal axial pulling-out strength of femoral neck samples implanting the side-hole hollow nail added by poly-methyl methacrylate bone cement was 2 023.7-3 572.1 N,with the mean value of (2 943.3 ? 535.8) N. The maximal axial pulling-out strength in the combined group was significantly greater than hollow nail implantation group (P

AIM: To construct recombinant adenoviral vector carrying the LEDGFp52 gene by homologous recombination in bacteria and to detect its expression in vitro.METHODS: The LEDGFp52 gene was cloned to adenoviral shuttle plasmid pAdTrack-CMV. Then, the resultant pAdTrack-CMV-LEDGFp52 was cotransfected into BJ5 183 bacteria with the adenoviral backbone plasmid pAdeasy-1. The adenoviral plasmid carrying LEDGFp52 was generated with homologous recombination in bacteria, and the adenoviruses were produced in 293 cells. These 293 cells were then infected with adenoviruses, and the expression of LEDGFp52 was detected by CPE (cytopathic effect) and western blot.RESULTS: The titer of Ad-LEDGFp52 adenoviruses was up to 5×1012 pfu/L after proliferation in 293 cells. LEDGFp52 was expressed efficiently in 293 cells after infection.CONCLUSION: The recombinant adenoviruses vector expressing LEDGFp52 was constructed successfully and can be used in further gene transfection experiments.

AIM: To construct and identify LEDGFp52 eukaryotic expression vector for RNA interference.METHODS: Recombinants were designed and established by targeting gene LEDGFp52 and plasmid pGensil-1 based on LEDGFp52 cDNA sequences of Genomes. Two pairs of oligonucleotides were synthesized according to the Tuschl principle and inserted into plasmid pGenSil-I to generate siRNA eukaryotic expression vector. DH5α strains were transformed, plasmids were extracted, and recombinant vectors were identified by the restriction map and the sequence analysis. The cultured cells were transfected by the recombinant plasmid (pGensil-1-RNA. LEDGFp52-1). At 48 hours after transfection, the whole cell protein was extracted, and the protein level was detected using Western blotting with mouse anti-human LEDGFp52 monoclonal antibody.RESULTS: Recombinant plasmids completely concord with the designs by the restriction map and the sequence analysis,the proteinlevel of LEDGFp52 was down regulated at 48hours after transfecting pGensil-1- LEDGFp52-1 expression vector into HeLa cells, the recombinant eukaryotic expression vectors were successfully constructed.CONCLUSION: siRNA recombinant can be successfully constructed by RNAi technique to inhibit the expression of LEDGFp52.

AIM: To construct the prokaryotic expression vector of rhLEDGFp52 gene,to obtain the rhLEDGF p52 protein.METHODS: rhLEDGFp52 gene was constructed into a prokaryotic expression vector pET30a (+) by recombinant DNA techniques and was identified by enzymatic digestion and sequence analysis. rhLEDGFp52 protein was induced expression by IPTG in E.coli BL21 (DE3), it was tested by Western blot and was purified by Ni-NTA His. Bind. Resin.RESULTS: We Successfully constructed the prokaryotic expression vector of rhLEDGFp52 gene and obtained its expression in E.coli BL21 (DE3),it was expressed in a soluble form and detected up to 34.63% of the total bacterial protein expressed in E.coli BL21 (DE3).Western blot analysis demonstrated that rhLEDGFp52 protein could spicifically integrate with LEDGF-ab. After purified by Ni-NTA His. Bind. Resin, the ultimate concentration of purified rhLEDGFp52 protein was 520μ g/ml and its purity was 87.93%.CONCLUSIONS: rhLEDGF p52 protein was obtained that provides an experimental basis for the further study of the biological function of rhLEDGFp52 protein.

Adolescent ; Humans ; Male ; Werner Syndrome

OBJECTIVETo investigate a manipulating therapy for treatment of anterior shoulder dislocation in elderly.

METHODSFrom October 2011 to June 2012,27 elderly patients with anterior shoulder dislocation were treated by extorsion traction and pushing manipulation with fingers, including 7 males and 20 females aged from 65 to 86 years old with an average of 77. The course of disease ranged from 1 h to 1 d. The shoulder manifested square deformity, Dugus signs showed positive, and X-ray displayed anterior shoulder dislocation. Dugus fixation was applied for and removed external fixation at 3 weeks after operation and carried out shoulder functional exercise. Functional evaluation standard on shoulder joint injuries was used for evaluate clinical outcomes.

RESULTSAll patients were gained reduction for the first time, and followed up at 3 months after operation, no dislocation occurred. According to functional evaluation standard on shoulder joint injuries, 22 cases got an excellent result,2 cases good,and 1 case moderate.

CONCLUSIONExtorsion traction and pushing manipulating therapy for treatment of anterior shoulder dislocation in elderly, which has advantages of simple, convenient, less painful, and can avoid iatrogenic injury, is feasible to widespread.

Aged ; Aged, 80 and over ; Female ; Humans ; Male ; Manipulation, Orthopedic ; Shoulder Dislocation ; physiopathology ; therapy ; Shoulder Joint ; physiopathology ; Traction ; Treatment Outcome

OBJECTIVE: To evaluate the clinical outcomes of medical supporting bone graft following posterior approach and bone cement implantation in the hip joint in treating intertrochanteric fracture.METHODS: A computer-based online search of Science Direct, Ei databases was performed for English articles published between January 1960 and October 2009, with the key words "bone cement, intertrochanteric fracture". In addition, CNKI and CBM were searched for related Chinese articles published between January 1994 and October 2009, with the key words "intertrochanteric fracture, coxa vara, posterior approach of hip joint, bone cement implantation in major screw hole". Moreover,related books were manually searched. Treatment of intertrochanteric fracture, basic and clinical experiment of intertrochanteric fracture treated by bone cement was included.RESULTS: Intertrochanteric fracture treatment includes lateral or anterior approach for dynamic hip plate system, dynamic hip screw, and femoral proximal intramedullary screw internal fixation. Dynamic hip screw is standard internal fixation to treat intertrochanteric fracture, with strong anti-rotation function, and meets the biomechanical requirements. However, screw loosening,extraction and breakage frequently occur. Cancellous bone screw track enhanced by bone cement increases screw retention force,benefits screw compression, enhances bone-screw interface to transfer the stress to screw-bone regions, which significantly increases the anti-flexion and anti-torsion strength of dynamic hip screw and improves fracture stability. The mechanism involves the integral formation of cancellous bone, bone cement and screw by the micro-interlocking of bone trabecula and surrounding cancellous bone.CONCLUSION: Dynamic hip screw filled by bone cement significantly enhances the anti-flexion and anti-torsion strength of internal fixation and improves fracture stability.

3.64 mmol/L)received 8-week double blind comparisons treatment.After treatment we randomly selected 15 patients for each group.The fasting serum lipid was measured at the end of 4-week and 8-week,and the serum hs-CRP and IL-6 were measured too.Meanwhile seven hypercholesterolemic patients from rosuvastatin group and seven ortholiposis out-patients were included.These patients were treated with statins for 4 weeks.The erythrocytes before and after treatment were kept to be measured the FA.Results (1)Compared with the pretreatment,the level of LDL-C,TC,hs-CRP remarkably reduced in two treatment groups at the end of 4-week therapy.These inflammatory parameters did not further reduced,but hs-CRP reduced further at the end of 8-week therapy.(2)The percent age of SFA was obviously higher in hypercholesterolemic group than ortholiposis group.On the other hand,PUFA and ?-3 FA were obviously lower.After 4-week treatment the percent age of SFA reduced,while PUFA and ?-3 FA increased significantly in hypercholesterolemic group.Conclusion (1)Statins reducing inflammatory factors is independent of lipid-modifying ability.(2)Rosuvastatin treatment can effectively reduce the level of LDL-C and TC,and no significant difference in the effect is observed between two treatment groups.(3)The erythrocyte membrane FA proportion was obviously different in hypercholesterolemic group from ortholiposis group.Statins treatment could make the proportion of FA in erythrocyte membrane restore normal.

[Objective] To evaluate the therapeutic effect of Oleum Curcumae Aromaticae (OCA) on leukemia cell strain HL-60 and K562 by observing its sensitivity in inhibiting HL-60 and K562. [Methods] Subculture of HL-60 and K562 cells was performed on the 96-hole culture plate and OCA 100?L at the final concentration of 400, 200, 100 and 50mg/L respectively was added. The blank control was added with RPMI-1640 culture fluid. After 24, 48 and 72 hours of treatment, MTF 10?L (5mg/mL) was added and the inhibitory rate on the cells was assayed by detecting the absorption value at 570nm wavelength. [Results] The inhibitory effect of OCA on HL-60 and K562 increased with the treatment time. The difference of inhibitory rates 24, 48 and 72 hours after treatment were significant (P