Objective To evaluate the feasibility and therapeutic effect of kyphoplasty in treating severe osteoporotic vertebral compressive fractures. Methods Thirty-five patients (48 vertebral bodies) with severe osteoporotic compressive fractures were included. There were 33 females and 2 males with the mean age of 74.2 years. The average compressive rate of the affected vertebral bodies was 77.0%. The thoracolumbar vertebrae were treated with kyphoplasties. Percutaneous puncture direction was adjusted according to compressive rate and shape of the vertebral bodies. The inflatable bone tamp was inserted into the fractured vertebral body. The balloon was inflated with low pressure and dilate-relieve-dilate method was applied. The balloon was deflated and withdrawn, leaving a cavity within the vertebral body, which then fulfilled with visualized bone cement. Preoperative and postoperative symptom level, complications and radiographic findings were recorded. Results All 35 patients tolerated procedure well. The mean heights of the anterior, mid and posterior vertebral body had improved from (0.8±0.1) cm, (0.8±0.2) cm, (2.1 ±0.8) cm preoperatively to (1.2±0.3) cm, (1.3±0.2) cm, (2.3±1.0) cm respectively after operation (P ＜0.05). There was significance difference between preoperative and postoperative heights of the anterior and mid vertebral body. The mean kyphosis was improved from 28.2°±5.2° before operation to 19.1°±4.9° after operation. Conclusion Kyphoplasty is feasible and effective for severe osteoporotic vertebral compressive fractures.

BACKGROUND:Inflammatory cellactivation and the generation of oxygen free radicals are important factors of lung ischemia-reperfusion injury. Adding the drugs with anti-inflammation and antioxidant effects into the lung preservation solution used, can improve the protection fluid, and play a crucial role in the study of lung ischemia-reperfusion injury and protection of the function of transplanted lung. OBJECTIVE:To discussion the effect of harmine in canine model of pulmonary ischemia-reperfusion injury. METHODS:Twelve healthy hybrid dogs were randomly divided into two groups, with six rats in each group. A canine model of lung ischemia-reperfusion injury was established, and the protecting liquid was perfused with the clockwise irrigation method. Control group:low potassium dextran protective fluid;experimental group:low potassium dextran+harmine protective fluid. After 2 hours of ischemia, the left lung circulation was recovered. The left lung tissue and blood samples were col ected from two groups of animal models after reperfusion, and their cytokines levels and the lung wet/dry weight ratio were detected and calculated. Bronchoalveolar lavage fluid was col ected to observe the pathological indicators. The main pulmonary artery pressure, left and right pulmonary artery pressure were recorded by continuous monitoring. RESULTS AND CONCLUSION:There were no statistical y significant differences in the interleukin-17, tumor necrosis factorαand endothelin 1 content in the left lung tissue and the blood between the two groups at 2 and 4 hours after reperfusion (P>0.05). After 4 hours of reperfusion in both groups, the neutrophil number, the number of lymphocytes, alveolar edema index, and vascular wal damage in bronchoalveolar lavage fluid showed no statistical y significant differences (P>0.05). Through the analysis of variance, the main pulmonary artery pressure, left pulmonary artery pressure and right pulmonary artery pressure also had no statistical significance between the two groups (P>0.05). By the analysis of cytokines, pathological indicators, lung wet/dry weight ratio, and pulmonary arterial pressure, harmine has no significant lung protection effect in canine model of lung ischemia-reperfusion injury.

BACKGROUND: In this study, we attempted to find the relations between blood pressure (BP) measured on the brachial artery (bBP) and BP assessed on the radial artery (rBP) in the right arm. METHODS: Three hundred and fifteen patients were enrolled in this study. Those who had peripheral vascular disease, wounds of arm skin or subcutaneous tissue infection were excluded. After a 15-minute equilibration and stabilization period after inducation of anesthesia, three bBP and rBP records were obtained sequentially using an oscillometric device with an adult cuff and infant cuff, respectively. Order for each BP was randomized. RESULTS: The bBP was significantly lower than the rBP (P<0.05). The difference between the two values varied from 13 to 18 mmHg in systolic BP (SBP), diastolic BP (DBP) and mean blood pressure (MAP) respectively. And the rBP was positively correlated with the bBP (r=0.872, 0.754, 0.765; P<0.001, <0.001, <0.001; SBP, DBP, MAP, respectively). CONCLUSION: The bBP value can be evaluated by the noninvasive measurements of rBP using an appropriate cuff in clinical practice.

Colitis, Ulcerative ; complications ; drug therapy ; Humans ; Male ; Middle Aged ; Psoriasis ; complications ; drug therapy ; Pyoderma Gangrenosum ; drug therapy ; etiology

The hexane extract from marine actinomycetes 124092 showed potent inhibition on B16 cell line by MTT assay. The hexane extract was fractionationed on silica gel column by vacuum liquid chromatography to afford 6 fractions(Fr1~Fr6), and Fr6 showed cytotoxic activity. To determine the bioacitve components of hexane extract, Fr6 was analyzed by GC/MS. The main components were identified as palmitic acid (11.76%), oleic acid (12.16%), linoleic acid (14.77%), and lactobacillic acid (61.31%). It have been reported that palmitic acid, oleic acid, and linoleic acid possess cytotoxic activity on rat ascites tumor cells and linoleic acid have suppressive effect on human lung adenocarcinoma cells.

Objective To study the clinical effect of the BacFuse for the lumbar disc herniation(LDH) and to discuss the affect for symptom of patients and structure of spine.Methods Collected the patients suffered from LDH retrospectively who had been implanted the BacFuse.There were 25 patients (29 surgical levels) included in the study.The clinical and X-ray assessment have been done on preoperation,postoperation,3 month,6 month and 12 month.Clinical index used visual analogue scale (VAS) score,oswestry disability index (ODI) score and Japanese Orthopaedic Association (JOA) score assessed clinical symptom and physical function.The intervertebral angle,posterior disk height and foraminal height were measured in X-ray.The patients were taken CT at preoperation and postoperation.The area and distance of herniated disc were measured in CT scan.Results In the aspect of clinical effect,25 cases were finished operation successly.The VAS score decreased from (6.61±1.29) points on preoperation to (2.78±1.00) points on the last follow-up,the ODI score decreased from (31.9±8.3) points to (15.9±6.4) points,the JOA score increased from (9.6± 3.0) points to (18.8± 3.2) points.In the aspect of spine structure,the intervertebral angle decreased from 10.1°±5.4° on preoperation to 8.4°±4.9° on the last follow-up,the posterior disk height increased from (0.65±0.29) cm on preoperation to (0.78±0.27) cm on the last follow-up and the foraminal height increased from (2.01±0.35) cm on preoperation to (2.16±0.37)cm.There was significant difference on posterior disk height and foraminal height between preoperation and postoperation,while the posterior disk height lost (0.07±0.12) cm (9.3％) and foraminal height lost (0.06±0.19) cm (2.7％).The CT showed that area of herniated disc decreased from (4.10±0.78) mm to (3.72±0.66) mm (9.3％) and distance of herniated disc decreased from (96.4±37.8) mm2 to (83.8±31.1) mm2 (7.4％).Conclusion BacFuse can relieve symptom and affect the biomechanics of the spine,makes the herniated disc retract partially,playing a Internal Retractor role in spine,and it is a new effective therapy for LDH.

BACKGROUND:Along with the widespread application of biodegradable materials in the field of medicine and the in-depth research of biomechanics,the drawbacks of traditional medical metal materials are increasingly appearing.In recent years,researchers at home and abroad focus on biodegradable materials that are represented by high molecular polymer to seek new breakthroughs in the field of spinal instability.OBJECTIVE:To investigate biomechanical changes of polylactic acid-polyglycolic acid (PLGA) lumbar interbody fusion cage in the body and discusses its feasibility for treating segmental instability of the spine.METHODS:Forty-two healthy pigs (9 months old) were randomly divided into two groups (n=21),and L4/5 intervertebral disc nucleus pulposus was removed in all animals.In experimental group,PLGA lumbar interbody fusion cage filled with broken bone was implanted;and in control group,autologous bone was implanted.X-ray was performed to observe the fusion of operation segments at 4,12 and 72 weeks postoperatively.Feasibility of fibrous fusion was measured by biomechanical test.Histologically,bone graft fusion at the surgical site and material degradation were detected.RESULTS AND CONCLUSION:(1) Imaging examination:Bone graft fusion in two groups was not visible at 4 weeks after operation.Evidence of increasing fusion was found in the experimental group at 12 weeks after operation;a visible part of the bone bridge was found in the control group,in which there was one case of fusion.Degradation of the fusion cage with one case of fusion in experimental group was found after 72 weeks after operation,and two cases of fusion in the control group.(2) Biomechanical test:There was no difference in the spinal range of motion between the two groups in different states at 4 weeks after operation (P ＞ 0.05).The spinal range values of motion at most of the states at 72 weeks after operation were significantly lower than those at 4 weeks after operation.(3) Cell histology observation:With the passage of time,the materials in the experimental group degraded gradually;new bone grew slowly and then fast,with bone fusion step by step.Fusion results were similar in the two groups.Our experimental findings indicate that the PLGA lumbar fusion cage has good biocompatibility.In addition to the individual state (left flexion),the mechanical properties of the fusion cage are similar to that of autogenous bone,and the fusion cage enables the segmental reconstruction of the pig spine to the maximum extent.

Secondary metabolites are the result of that plant interaction with biological and non-biological factors in the long-term evolution process, and play an important role in plant growth, development and physiology. The effective components of medicinal plant are usually the secondary metabolites in plant cells, and the synthesis of them are affected by a variety of factors, such as environmental impact. Acquirement of the secondary metabolites via callus culture has the advantage of low cost and less environmental impact. The synthesis and accumulation of medicinal plant secondary metabolites are not only controlled by light, temperature and pH, but also infected by germplasm, plant growth regulator and elicitor. This article presents a review of the influencing factors, and provides a basis for further study and development.
Light ; Plant Growth Regulators ; metabolism ; Plant Physiological Phenomena ; radiation effects ; Plants ; metabolism ; radiation effects ; Temperature

OBJECTIVETo examine the antiangiogenic and antitumor effects of vector-based small interfering RNA (siRNA) targeting vascular endothelial growth factor (VEGF) on human tongue squamous cell carcinoma xenografts in vivo.

METHODSTca8113 human tongue cancer nude mice xenograft model was established, and subsequently divided into four groups randomly (5/group). Two siRNA targeting VEGF constructed in eukaryotic expression vector (PU-VEGF-siRNA1, PU-VEGF-siRNA2) were injected intratumor and peritumor with lipofectamine 2000, respectively. No siRNA vector injected and non-injected tumors were used as experimented and negative controlled, respectively. Animals were injected one time every 3 days for a total of 10 times. Three days after the last injection, the weigh and volume of tumors, and intratumor microvessel density (MVD) were measured. The expression of VEGF in xenograft tumors was detected by reverse transcription polymerase chain reaction (RT-PCR), Western blotting and immunohistochemistry. The cell apoptosis and cell cycle analysis of tumors were detected by Tunel and Flow cytometry, respectively.

RESULTSCompared to the experimental and negative controls, the percentage of cells in the G(1) phase increased (P < 0.05), the expression of VEGF on both mRNA and protein level, the tumor weigh and volume, and MVD decreased in the PU-VEGF-siRNA2 group (P < 0.05), and more apoptosis was induced (P < 0.01). But significant differences were not noted between PU-VEGF-siRNA1 group and two controls (P > 0.05).

CONCLUSIONSVEGF-siRNA can reduce VEGF expression, inhibit tumor growth and angiogenesis, and induce apoptosis in Tca8113 cell carcinoma in vivo. Different VEGF-siRNA may have different effect in vivo.

Animals ; Apoptosis ; Carcinoma, Squamous Cell ; blood supply ; genetics ; pathology ; Cell Line, Tumor ; Humans ; Mice ; Mice, Nude ; Neoplasm Transplantation ; Neovascularization, Pathologic ; prevention & control ; RNA, Small Interfering ; Tongue Neoplasms ; blood supply ; genetics ; pathology ; Vascular Endothelial Growth Factor A ; genetics

OBJECTIVETo assess suppression effects of vector-based small interfering RNA (siRNA) on vascular endothelial growth factor (VEGF) expression of human tongue squamous carcinoma cell line (Tca8113) in vitro.

METHODSTwo siRNA targeting VEGF constructed in eukaryotic expression vector (Pu-VEGF-siRNA1, Pu-VEGF-siRNA2), eukaryotic expression vector as the experiment control, all of which were transfected into Tca8113 cells with Lipofectamine 2000. Non-transfection cell was used as negative control. VEGF mRNA and protein were detected by reverse transcription polymerase chain reaction (RT-PCR), immunohistochemistry and enzyme linked immunosorbent assay (ELISA), respectively.

RESULTSCompared to the experimental and negative controls, the expression of VEGF mRNA and protein were significantly decreased in the Pu-VEGF-siRNA1 group and Pu-VEGF-siRNA2 group. But there were no significant differences between two controls (P > 0.05).

CONCLUSIONVector-based siRNAs targeting VEGF are efficient in down-regulating VEGF expression in Tca8113 cells.

Carcinoma, Squamous Cell ; Cell Line ; Cell Line, Tumor ; Cell Proliferation ; Genetic Vectors ; Humans ; RNA, Messenger ; RNA, Small Interfering ; Tongue Neoplasms ; Transfection ; Vascular Endothelial Growth Factor A