ObjectiveTo study the clinical effect of locking compression plate fixation in treatment of the elders with unstable fractures of the distal radius. Methods17 cases with unstable distal radius fractures were treated by volar locking compression plate. The function of the carpal joints and the bone healing conditions were evaluated after operations. ResultsAll cases were followed-up for 7 to 16 months ( mean 12. 6 months). Union was obtained in all the patients after 11.4 weeks. The clinical outcomes were evaluated according to modified X-rays and wrist assessment. 12 cases were graded as excellent and 4 as good. 1 case were graded as poor. The overall satisfactory rate was 94. 1％. ConclusionThe unstable distal radial fractures could be effectively treated with open reduction and LCP fixation through volar approach.

Objective To evaluate the technique of Kirschner with a hole and tensile developed from the Kirschner tensile band wire.Methods Forty-two cases with fracture of patella and 23 cases with fracture of ulna olecranon were successfully operated with this apparatus.Average age was 42 years old(range,24～78 years),including 38 male patients and 27 females totally.Results Fracture healing rate was 100%,the rate of excellent and good result was 95% after 9 months to 3 years follow-up.No tenderness,skin penetrating caused by the bolt ends,and loosen fixations were found.Conclusion This apparatus can be considered as a rigid,safe and effective method and can meet the biomechanics principle of the Kirschner tensile band wire,complication of the Kirschner tensile band wire could be avoided by using this technique.

Objective To investigate the curative effect and the feasibility of treating femoral neck fractures with cannulated screw fixation.Methods Twenty-three patients with femoral neck fractures were treated with cannulated screw fixation,their average age was 51 years old(range,12～86 years),including 7 male patients and 16 females totally.Garden Ⅱ 2 cases,Garden Ⅱ 6 cases,Garden Ⅲ 12 cases,Garden Ⅳ 3 cases.A patient who suffered from fractures displacement needed traction for 3～7 days before surgical operation and the opening reduction was necessary if reduction was not satisfactory.Results During the follow-up 11～33 months the rate of nonunion was 9%(2 cases) and the rate of avascular necrosis was 13%(3 cases).Conclusion Trectin femoral neck fracture with cannulated screw fixating is very simple and the trauma is small.This may improve the cure rate of the femoral neck fractures and it is easy to be spreaded across the basic-level hospital.

ObjectiveTo evaluate the value of application of spiral CT with 3D reconstructure on diagnosis and treatment of tibial plateau fractures.Methods15 cases of tibial fractures treated with x-ray and 16-slices spiral CT,3 D images were made,fractures were classified and evaluated with 3D images and treated with correct treatment.ResultsAll of the 15 patients got correct diagnosis by 16-slices spiral CT with 3D reconstructure,1 failed by x-ray.10 fractures were operated under 3D reconstructure guide and operation proved fractures revealed by 3D reconstructure finally.ConclusionSpiral CT with 3D reconstructure could offer more accurate location and classification of tibial plateau fractures,and it had obvious advantage on demonstration of spatial relationship,and it also could provide better planning and management for the tibial plateau fractures.

Objective To isolate and identify anti-tumor constituents from Lysimachia christinae Hance.Methods The compounds were isolated and purified by chromategraphy on AB-8 macroporous resin, silica gel, Sephadex LH-20, ODS and preparative HPLC.Their structures were elucidated using chemical and spectroscopic methods.All thecompounds obtained were evaluated on their growth inhibitory effects in vitro using the MTT method.Results Eleven compounds were isolated from the whole plant of L.christinae Hance and were identified as 3,3'-dimethoxy-6,6'-di[(Z)-pentadec-10-en-1-yl]-[1,1'-bi(cyclohexane)]-3,3',6,6'-tetraene-2,2',5,5'-tetraone(1),physcion(2),munjistin(3), 9,16-dioxooctadec-10,12,14-trienoic acid(4),cyclamiretinA-3-O-{β-D-xylopyranosyl-(1→2)-β-D-glucopyranosyl-(1→2)-[β-D-glucopyranosyl-(1→4)]-α-L-arabinopyranoside(5),lysikoianoside(6),quercetin-3-O-glucopyranoside(7),isorhamnetin3-O-β-D-galactopyranoside(8),3',4',5',5,7-pentahydroxyflavone(9), rutin(10), and quercetin(11).The screening results of antitumor activity in vitro showed that IC50 of compound 5 for human cervical carcinoma cells HeLa, human osteosarcoma cells U20S, human lung adenocarcinoma cells PC-9,and human colorectal carcinoma cells CT-26 was 2.29, 1.22, 1.43, and 1.29 μmol/L respectively.Conclusion Compound 1 is a new compound and compounds 2-4 are isolated from the plants of Lysimachia for the first time.Compound 5 shows obvious inhibitory effects on tumor cell growth in vitro.

BACKGROUND:Three-dimensional finite element simulation has been widely used in biomechanics. However, there is little research in knee joint replacement. The study of femoral prosthesis is less.
OBJECTIVE:To analyze the optimal positioning parameters of knee replacement and femoral prosthesis implantation, and to verify the efficacy of Gemini-PS knee prosthesis in total knee arthroplasty.
METHODS: (1) Knee finite element model in total knee replacement was constructed. Orthogonal experiment was performed in femoral osteotomy positioning parameters. The shift amount A, external rotation degree B, and valgus degree C of femoral prosthesis were selected as the relevant factors for orthogonal experiment. Three values were taken for each parameter to establish orthogonal tables. Nine experimental combined knee replacement finite element models were created and analyzed with finite element. Analysis of variance and range analysis were used by optimization. (2) Totally 42 patients (47 knees) with knee osteoarthritis received total knee arthroplasty with Gemini-PS knee joint prosthesis. Knee joint function was evaluated after replacement with Hospital for Special Surgery knee score and American Knee Society knee score. Knee pain was assessed with Visual Analogue Scale score.
RESULTS AND CONCLUSION:(1) Minimal polyethylene substrate surface compressive stress peak was translation 0 mm, external rotation of 3°, valgus 6°; the peak stress was 15.9 MPa. Among the influential factors, the effects of internal and external translation were larger than that of external rotation angle, and greater than that of valgus angle. The optimal positioning parameter combination was pan 0 mm, external rotation 3°, valgus 6° by range analysis and variance analysis. Orthogonal experiment was valid by simulation. (2) 42 patients were folowed up for 12-36 months. One patient affected subcutaneous fat liquefaction of the lower segment of the incision. Hospital for Special Surgery knee score and American Knee Society knee score were significantly higher after implantation (P < 0.05). Visual Analogue Scale score was significantly lower after replacement (P < 0.05). X-ray films showed that osteolysis, dislocation or loosening was not found. The recovery of knee joint was good after operation. (3) These findings

Objective:To study the antihyperglycemic effect of water soluble polysaccharides (MCW) and alkaline soluble polysaccharides (MCB) from Momordica charantia L. on streptozotocin-induced diabetic mice. Method:Twelve mice were selected randomly as control, while the other l08 mice were injected with STZ 200 mg/kg?bw to induce diabetes.The diabetic mice were divided into 4 groups,the model, MCW (300 mg/kg bw), MCB (300 mg/kg bw), Gilbenclamide (15 mg/kg bw). The above components were administered intragastrically for 10 d and then blood samples were taken to determine concentrations of serum glucose and insulin. Results: The blood glucose levels could be obviously decreased by MCW and MCB in the diabetic mice. MCB has the best antihyperglycemic effect, in terms of improving the serum insulin level and decreasing the blood glucose level of diabetic mice. Conclusion:The polysaccharides from Momordica charantia can repair the injured pancreatic islet tissues and enhance insulin secretion so as to reduce blood glucose level of the diabetic mice.

More and more studies have shown that NOD-like receptor protein 3 (NLRP3) inflammasome has become the regulatory factor of inflammatory response and protective immunity, and the assembly and activation of NLRP3 inflammasomes are closely related to the anti-tumor immunity effect. Depending on the cell type and stimuli, activation of the NLRP3 inflammasome can induce immune cells to become polarized, hyperactive, or pyroptotic, releasing interleukin (IL)-1β and IL-18, which leads to cascade immune or inflammatory responses, and its role in tumor immunity has received extensive attention. Here, we review the mechanisms of the NLRP3 inflammasome enhancing CD8⁺ T cells-mediated anti-tumor immunity by inducing the pyroptosis of tumor cell, the pyroptosis or hyperactive state of dendritic cells (DCs), and the pyroptosis or polarization of the macrophages. Different anti-tumor immune roles of NLRP3 inflammasome activation in tumor cells and immune cells provide new directions for future research and may influence the development of next-generation immunotherapy.

Objective To investigate the value of CT in localization diagnosis of the neoplasm of the transverse mesocolon.Methods 26 cases of neoplasm of the transverse mesocolon proved by surgical pathology or pathology from May 1998 to Dec.2007 were retrospectivley studied.All cases underwent CT scan.Image analysis was focused on the relation between neoplasm and SMA,SMV,middle colonic vessels,duodenum,and the small bowel.Readipose sarcoma (n=1),transverse colonic carcinoma invaded the transverse melocolon (n=2),pancreatic carcinoduodenum in 22 cases.Superior mesenteric artery and vein were displaced in 21 cases;middle colonic vessels were showed different CT manifestation.Conclusion The relation between neoplasm and adjacent structure is helpful for the localizing neoplasm of the transverse mesocolon.

Objective To study bacteria-blocking effect of surgical gowns with new material.Methods Semi-quantitative and qualitative testing methods were used to detect bacteria-blocking rates of key sites of surgical gowns(chest and forearm), the detected samples included sample A (composite material, unused), sample B (composite material, after washing 100 times), and sample C (monolayer material, unused).Results In semi-quantitative testing,the average bacteria-blocking rates of three samples were 75.47%, 70.78%, and 73.73% respectively.In qualitative testing,three samples could effectively block the penetration of Staphylococcus aureus under wet condition and Bacillus subtilis var.niger spores under dry condition.Conclusion In semi-quantitative testing, all three kinds of samples had bacteria-blocking effect, and the average bacteria-blocking rate was> 70%;in qualitative testing, three samples all meet requirements of bacteria-blocking effect under wet and dry condition.