Correlation between triglyceride-glucose index and high on-treatment platelet reactivity during clopidogrel treatment in patients with ischemic stroke / 国际脑血管病杂志

Objective:To investigate the correlation between triglyceride-glucose (TyG) index and high on-treatment platelet reactivity (HTPR) during clopidogrel treatment in patients with ischemic stroke.Methods:Patients with ischemic stroke who received maintenance dose of clopidogrel (75 mg/d) in the Department of Neurology, Guangdong Provincial Hospital of Chinese Medicine from January 2017 to March 2021 were retrospectively included. The highest quartile (Q4) of the TyG index was defined as insulin resistance. Platelet reactivity was assessed by thromboelastogram and clopidogrel HTPR was defined as the clot strength induced by adenosine diphosphate (MA ADP) >47 mm. Multivariate regression model was used to analyze the independent correlation between TyG index and platelet reactivity. Results:A total of 83 patients were included. The TyG index showed a linear correlation with MA ADP. The patients were divided into 4 groups according to the quartile of TyG index. The incidence of clopidogrel HTPR increased significantly with the increase of the quartile of the TyG index ( Ptrend=0.017). Multivariate analysis showed that there was a significant independent correlation between insulin resistance and clopidogrel HTPR (odds ratio 4.597, 95% confidence interval 1.285-16.446; P=0.019). Conclusions:In patients with ischemic stroke treated with clopidogrel, the incidence of clopidogrel HTPR gradually increases with the increase of the quartile of the TyG index. The insulin resistance assessed by the TyG index is independently associated with clopidogrel HTPR.

A clival-cervical plate fixation for the craniovertebral instability: a biomechanical study / 中华骨科杂志

Objective:To develop a specialized clival-cervical plate fixation (CCPF) for anterior surgery to treat craniovertebral instability, and to compare it with a posterior occipitocervical fixation (POCF) in biomechanical validation.Methods:Based on the measurement of 40 adult dry bones and 30 volunteers CT images, the clival-cervical plate was designed and manufactured. 8 cadaveric specimens (occiput-C 3) were tested in five conditions including the intact status, the intact+CCPF status, the injury status, the injury+CCPF status, and the injury+POCF status. Specimens were applied a pure moment of 1.5 N·m in flexion, extension, lateral bending, and axial rotation. Calculating and comparing the range of motion (ROM) and neutral zone (NZ) for the occiput to C 2. The effects of different fixation methods on the distribution of ROMs at the occipitocervical region were compared. Results:The injury+CCPF status constrained ROMs to 1.7° in flexion ( q=4.68, P=0.055) , 1.2° in extension ( q=0.39, P=0.9922) , 2.8° in lateral bending ( q=1.25, P=0.814) , and 4.3° in axial rotation ( q=5.08, P=0.035) , resulted in larger ROM in axial rotation but similar ROMs in other directions ( P>0.05) when compared with the injury+POCF status. There were no significant differences between the above two fixation methods in flexion-extension ( q=1.94, P=0.554) , lateral bending ( q=1.79, P=0.611) and axial rotation ( q=2.14, P=0.478) for the NZs. For the flexion, extension,lateral bendingand axial rotation direction, the proportion of the C 1, 2 ROM to the overall ROM was 28%, 25%, 34% and 56% respectively in the injury+CCPF status, and it was 59%, 53%, 42% and 71% respectively in the injury+POCF status. Conclusion:CCPF is a biomechanically effective alternative or supplemental method of POCF for the craniocervical instability.

Biomechanical Study of Posterior Dynamic Fixation at Atlantoaxial Joints / 医用生物力学

Objective To evaluate the influence of dynamic fixation (rotating and sliding pedicle screws) on stability of the atlantoaxial joint. Methods A series of in vitro biomechanical tests were performed using six fresh adult cervical spines (occipital bone-C4 segment) to simulate different conditions in surgery， including the intact state, the injury state, rigid fixation, rotating pedicle screw fixation, sliding pedicle screw fixation. The repeated measurement design was employed, and under intact, injury and different fixation states, the pure moment of 1.5 N·m in flexion-extension, left-right lateral bending, left-right axial rotation directions were applied using the spinal testing machine. The movement of atlantoaxial spine was measured consecutively by three-dimensional （3D） measurement system in order to analyze the range of motion (ROM) and neutral zone (NZ) of atlantoaxial joints. Results Under injury state, ROM of atlantoaxial joints was significantly larger than that under intact state during flexion, extension, lateral bending and rotation, leading to the instability of atlantoaxial joints. ROM of fixation segments was significantly reduced during flexion, extension, lateral bending and rotation after rigid and dynamic fixation. Compared with rigid fixation, dynamic fixation showed a significant ROM increase during lateral bending. NZs of fixation segments after dynamic fixation were significantly reduced. There were no significant ROM differences between rigid fixation and dynamic fixation. Conclusions The stability of atlantoaxial joints by dynamic fixation during flexion, extension and rotation was comparable to that by rigid fixation, but weaker during lateral bending. Dynamic screw fixation can maintain the relative stability of atlantoaxial joints.

Anatomical study of anterior occipitocervical fixation with clival screw and plate via transoral approach / 中华骨科杂志

Objective:To evaluate the feasibility of the screw and plate for clival fixation using a transoral expanded approaches.Methods:The transoral expanded approaches were performed on craniocervical segment specimens obtained from 7 subjects, including transoral approach (TO), transoral with soft (TOP) or hard (TOHP) palate split, mandibulotomy (MO) and mandibuloglossotomy (MLO). The distribution and thickness of soft tissue, the configuration of the vertebral arteries, the distance between the midline and the vertebral arteries, the exposed area of the clivus and cervical spine, and the range of screw angle (the angle between the line from the lower incisor or the central base of the mandible to the exposed area of the clivus and the tangent line of the clivus) were evaluated.Results:The thickness of the soft tissue on the posterior pharyngeal wall above the clival pharyngeal nodules was 3.5±0.6 mm. That on the anterior C 1-C 5 vertebrae was 5.0±0.5 mm. The distances from the bilateral vertebral arteries to the midline was 19.5±1.2 mm at C 1, 2, 14.6±2.7 mm at C 2, 3, 14.0±2.7 mm at C 3, 4, and 13.9±2.7 mm at C 4, 5. For the TO approach, the longitudinal diameter of the exposed clivus was 8.3±3.0 mm. The distance from the lower incisor to the superior margin of the exposed clivus, the lower margin of the exposed clivus, the anterior arch of C 1, the vertebral body of C 2 and C 3 were 104.7±4.3 mm, 99.2±6.8 mm, 81.4±4.3 mm, 75.1±4.0 mm and 68.7±6.5 mm, respectively. Six specimens were exposed to the C 3, while one was exposed to the C 2. For the TOP approach, the longitudinal diameter of the exposed clivus was 18.5±4.8 mm. The distance from the lower incisor to the superior margin of the exposed clivus and the pharyngeal nodules were 107.9±6.7 mm and 104.8±6.7 mm, respectively. For the TOHP approach, the longitudinal diameter of the exposed clivus was 26.3±1.8 mm (the clival length) with distance from the lower incisor to the superior margin of the clivus 112.4±12.6 mm. For the MO/MLO approach, the entire clivus was exposed. The distance from the central base of the mandible to the superior and inferior margin of the exposed clivus and the pharyngeal nodules were 141.8±15.7 mm, 131.0±9.9 mm and 120.5±8.2 mm, respectively. The inferior margin of the exposed cervical vertebra was C 5, 6. The rate of the clival screw placement through anterior occipitocervical fixation using TO, TOP, TOHP, MO and MLO was 0%, 71% (5/7), 86% (6/7), and 100%, respectively. The screw angle was 99.0°±1.8°, 92.6°±7.7°, 92.6°±7.7°, 75.1°±7.7°, and 75.1°±7.7°, respectively. Conclusion:Occipitocervical fixation with clival screw and plate could be conducted in most cases via TOP and TOHP approaches. However, in some cases with small split-mouth or mouth opening limited, smaller clival screw angle caused by basilar impression or basilar invagination, requiring fixation and reconstruction of the lower cervical spine, and the MO/MLO approaches could be still required to achieve the fixation.

Efficacy and safety of domestic dasatinib as second-line treatment for chronic myeloid leukemia patients in the chronic phase / 中华血液学杂志

Objective@#To investigate the efficiency and safety of domestic tyrosine kinase inhibitor (TKI) dasatinib (Yinishu) as second-line treatment for patients with chronic myeloid leukemia in chronic phase (CML-CP).@*Methods@#A retrospective analysis of clinical data of CML-CP patients who received domestic dasatinib as second-line treatment in the CML collaborative group hospitals of Hubei province from March 2016 to July 2018 was performed. The optimal response rate, the cumulative complete cytogenetic response (CCyR), the cumulative major molecular responses (MMR), progression free survival (PFS), event free survival (EFS) and adverse effects (AEs) of the patients were assessed at 3, 6 and 12 months of treatment.@*Results@#A total of 83 CML-CP patients were enrolled in this study. The median follow-up time was 23 months. The optimal response rates at 3, 6 and 12 months in 83 CML-CP patients treated with dasatinib were 77.5% (54/71), 72.6% (61/75) and 60.7% (51/69), respectively. By the end of follow-up, the cumulative CCyR and MMR rates were 65.5% (55/80) and 57.1% (48/73), respectively. The median time to achieving CCyR and MMR was 3 months. During follow-up time, the PFS rate was 94.0% (79/83) and the EFS rate was 77.4% (65/83). The most common non-hematological AEs of dasatinib were edema (32.5%), rash itching (18.1%) and fatigue (13.3%). The common hematological AEs of dasatinib were thrombocytopenia (31.3%), leukopenia (19.3%) and anemia (6.0%).@*Conclusion@#Domestic dasatinib was effective and safe as the second-line treatment of CML-CP patients and it can be used as an option for CML-CP patients.

Biomechanical comparison of Kangli hollow screws with sliding compression locking plate system and conventional cannulated lag screws for fixation of type Pauwels Ⅲ femoral neck fracture / 中华骨科杂志

Objective To compare the biomechanical performance of Kangli hollow screws with sliding compression locking plate system (KHS) and conventional cannulated lag screws for fixation of type Pauwels Ⅲ femoral neck fracture.Methods 7 cadaveric femurs were selected,vertical fractures (Pauwels Ⅲ fracture,at 70° to the horizontal) were artificially conducted in these cadaveric proximal femurs by an orthopaedic surgeon and fixed by KHS screws with plate system or conventional cannulated lag screws.Samples were positioned at 75° of the femoral shaft to the horizontal,embedded in the mould and fixed in the experimental console.Optical sensors were set at the femoral neck around the osteotomy line.Then the loading were input in the vertical,horizontal lateral direction and rotating direction around the femoral neck axis,the maximal and minimal values between the fractured fragments and the corresponding values of the loading were recorded.The values of stiffness in three directions were calculated and compared.The CT data of the left femur of a 25 year-old healthy male volunteer was input into the co(m)esponding software and vertical femoral neck fracture model was generated.Two finite element analysis models were obtained after the fracture being fixed using these two different implants,and the Von Mises stress distribution on the femur,implants and the interface between the fractured fragments and the relative motion between the fractured fragments were compared.Results In the vertical,horizontal lateral direction and rotating direction around the femoral neck axis,the stiffness of the KHS were 3 904±1 148 N/mm,4 324±1 234 N/mm and 11.45±4.95 N · m/° respectively,higher than those of the CSs method with the values of 3 020±1 150 N/mm,3 020± 854 N/mm.and 6.53±4.83 N· m/° respectively.The differences between the two groups were statistically significant (t=2.7194,4.7694 and 2.9424;P=0.0347,0.0050 and 0.0423).In the finite element analysis test,the maximal Von Mises stress values distributing on the femur and the screws in the KHS group were 40.1 MPa and 126.4 MPa,and those in the CSs group were 98.1 MPa and 145.5 MPa respectively,and both values of the former were lower than the latter.But the Von Mises stress value on the interface between the fractured fragments in the KHS group was 14.37 MPa,which was much higher than that in the CSs groupwhich was 9.39 MPa.The gap at the fracture site of the CSs fixation model was dramatically larger than that of KHS fixation model.Conclusion The KHS screws and plate system could provide better immobilization effect for vertical femoral neck fracture compared to the cannulated lag screws.The risk of the screws failure was lower and the fracture union would be easier to obtained by the fixation of KHS screws with plate system.

Constitutional types of Chinese medicine of primary bile reflux gastritis among different season:a cross-sectional study / 国际中医中药杂志

Objective To investigate the constitutional types of Chinese medicine of primary bile reflux gastritis among different seasons. Methods Data of gastroscopy center during August 2015 to July 2016 were analyzed. A total of 603 patients were diagnosed as primary bile reflux gastritis. After gastroscopy, the standardized constitution in Chinese medicine questionnaire was used to evaluation the scores of all kinds of constitutional types. The Constitutional types of Chinese medicine of primary bile reflux gastritis among different seasons were analyzed. Results Among all seasons, the positive detection rate showed significant difference (χ2=13.041, P=0.005), and summer group showed the highest among the four seasons (23.38% vs. 17.63%,χ2=12.414, P<0.001). Among all seasons, constitutional types of Chinese medicine of primary bile reflux gastritis had significant difference (χ2=37.441, P<0.001). Damp-heated type had significant difference among seasons (χ2=8.472, P=0.037), especially during the summer (χ2=5.847, P=0.016). Conclusions The summer may have more primary bile reflux gastritis chance to be diagnosed as primary bile reflux gastritis. Yang-deficiency type, Gentleness type, Qi-deficiency type and damp-heat type were more common in primary bile reflux gastritis patients.

Application of liver three-dimensional visualization technologies in the treatment planning of hepatic malignant tumor / 中华外科杂志

Objective@#To discuss the application of three dimentional(3D)visualization technologies in treatment plan of hepatic malignant tumor.@*Methods@#The clinical data of 300 patients with liver malignant tumor who received treatment from January 2016 to January 2017 in the Third Department of Hepatic Surgery of Eastern Hepatobiliary Surgery Hospital was retrospectively analyzed in this study, including 221 male and 79 female patients aged from 7 to 76 years with median age of 54 years. The median height was 168 cm (115-183 cm), the median weight was 65 kg (20-105 kg) and the median tumor volume was 142 ml (23-2 493 ml). Three-dimensional visualization technology was used in all patients to reconstruct liver three-dimensional graphics. Also, two and three-dimensional methods were taken respectively to evaluate patients and develop treatment strategy. The change of treatment strategy caused by 3D evaluation, actual surgical plan, operation time, time of hepatic vascular occlusion, intraoperative blood loss, volumes of blood transfusion and postoperative complications was observed.@*Results@#After three-dimensional visualization technology was applied, 75(25%) of 300 patients′ treatment strategies had been changed. The range of hepatectomy was extended in 25 patients. And 7 of them were due to hepatic venous variation, which resulted in increasing drainage area. In other 4 patients, liver resections were extended due to lack of perfusion of the liver parenchyma after the removal of portal vein. And hepatectomy was expanded in 14 patients in order to increase the surgical margin. The range of hepatectomy was reduced in 8 patients, 4 of which were due to hepatic venous variation, such as hepatic vein of segment 4 or lower right posterior hepatic vein. The remaining 4 cases were because of insufficient residual liver volume.The surgical resection was performed in 278 cases, 257 of which received operation directly. Left hepatectomy was performed in 24 patients and right hepatectomy was performed in 33 patients. Left trisectionectomy was carried out in 12 patients and right trisectionectomy was carried out in 11 patients. Caudate lobectomy was applied in 10 patients. There were 18 cases of left lateral sectionectomy, 7 cases of right anterior sectionectomy, 25 cases of right posterior sectionectomy and 18 cases of mesohepatectomy. Single or multi segment resection was performed in 99 patients. The treatment strategy of thirty-six patients was converted to staged hepatectomy (ALPPS 11 cases and portal vein embolization 25 cases). The median operation time was 130 minutes (90-360 minutes) and the median inflow blood occlusion time was 20 minutes (0-75 minutes). Median blood loss volume was 200 ml (20-1 600 ml). Thirty-seven of 278 patients received transfusions, and the average red blood transfusion volume was (4.4±1.7)units (0-8 units). Median hepatic resection volume was 530 ml(30-2 600 ml). There were 117 cases of pleural effusion after operation, including 3 patients needing invasive therapy. Ascites occurred in 23 patients, 6 of whom needed invasive therapy. Biliary leakage was observed in 30 patients. Eight patients occurred hepatic cutting surface hemorrhage, 6 of whom received blood transfusion, and 4 of whom underwent laparotomy to stop bleeding. Three patients had pulmonary infection after surgery and 3 patients appeared biliary obstruction. Deep vein thrombosis took place in 2 patients and portal vein thrombosis was observed in 4 patients. No postoperative liver failure and death ever happened in our study group.@*Conclusion@#Three-dimensional visualization technique can optimize the treatment strategy of patients with liver malignant tumor, improve surgical safety.

Meta Analysis of the relationship between serum adenosine deaminase and acute,chronic hepatitis / 中国综合临床

Objective To evaluate the role of serum adenosine deaminase in the diagnosis and treatment of acute,chronic hepatitis.Methods WanFang Data,CNKI and PubMed were retrieved in order to screen literature about the relationship between serum ADA and acute and chronic hepatitis,the retrieval time was from the beginning of the database to December 1st,2016.After evaluating quality of the included studies, the meta-analysis was conducted to analyze the relationship between the level of serum ADA and acute,chronic hepatitis via RevMan 5.2 software.Results A total of 28 articles were identified including 1688 cases with acute hepatitis and 1843 cases with chronic hepatitis.The results of meta-analysis showed that the levels and positive rate of serum ADA were significantly higher in the acute hepatitis groups than that in chronic hepatitis groups(MD=4.13,95%CI(0.43,7.84),P=0.03;OR=1.94,95%CI(1.19,3.14),P=0.007).Funnel plots showed significant publication bias,and may have implications for Meta analysis(P=0.001).Conclusion Heterogeneity of the literatures mainly comes from the clinical heterogeneity and statistical heterogeneity.The serum ADA has certain value in the diagnosis and treatment of acute and chronic hepatitis.

Establishment of a direct detection method for human platelet antigen1-17,Cab allele whole blood / 国际检验医学杂志

Objective To establish an acurate and convenient method to distinguish human platelet antigen(HPA) SNPs based on Target Enriched Multiplex-PCR(TEM-PCR),fluorescent probe melting curve analysis and blood direct PCR.Methods Design TEM-PCR primers and probes of HPA1-17,Cab alleles,amplify target sequences of all 18 alleles by blood direct PCR and distinguish different SNPs by melting curve of probes.Results The TEM-PCR could amplify all target sequences of 18 alleles and the melting curve analysis could distinguish those SNPs,the accuracy was equal to PCR-SSP method and the process was more convenient without blood genomic DNA extraction and subsequent gel electrophoresis thus decrease the cross-contamination risk.Conclusion Successfully established a HPA1-17,Cab alleles distinguishing method based on TEM-PCR,blood direct PCR and fluorescent probe melting curve analysis technique.

Strategies for measuring medication adherence in patients with schizophrenia / 中南大学学报(医学版)

Long-term therapy should be administrated for patients with schizophrenia and the medication adherence is very important for the prognosis and outcome in these patients. In this study, we screened the literatures from various databases in accordance with our search criteria. A total of 11 literatures with the results of reliability and validity regarding the measurement of schizophrenia medication adherence were enrolled in our analysis. Based on the measurements, they were classified into subjective methods and objective ones. The objective methods include blood plasma and urine concentrations, pharmacy records, pill counts and Medication Event Monitoring System. The subjective methods include Drug Attitude Inventory, Rating of Medication Influences Scale, Brief Evaluation of Medication Influences and Beliefs, the Brief Adherence Rating Scale, Medication Adherence Rating Scale, and Morisky scales. In general, single method for measuring medication adherence in patients with schizophrenia is limited. We recommend researchers to use 2 or more methods when measuring the medication adherence in patients with schizophrenia.

Celastrol induces caspase-dependent apoptosis through ROS/JNK path-way in Saos-2 cells / 中国病理生理杂志

AIM:ToexploretheeffectofcelastrolonapoptosisofSaos-2cellsanditsmechanism.METH-ODS:Saos-2 cells were treated with various concentrations of celastrol , and the cell viability was measured by MTT assay . Apoptosis and reactive oxygen species ( ROS) production were determined by flow cytometry .The protein levels of cleaved caspase-9, cleaved caspase-3 and phosphorylated JNK were evaluated by Western blot .RESULTS:The viability of Saos-2 cells was significantly inhibited by celastrol .Celastrol significantly induced apoptosis of Saos-2 cells.Celastrol signifi-cantly induced ROS production in the Saos-2 cells.Western blot analysis demonstrated that celastrol significantly increased the protein levels of cleaved caspase-9, cleaved caspase-3 and phosphorylated JNK in the Saos-2 cells.CONCLUSION:Celastrol induces caspase-dependent apoptosis through ROS/JNK pathway in Saos-2 cells.

Diagnosis boundary values of metabolic syndrome obesity index for Children and adolescents / 中南大学学报(医学版)

Objective: To determine the distribution characteristics of waist circumference (WC), waist height ratio (WHtR) of 6–18 years olds in Guangzhou, and to put forward the WC and WHtR appropriate boundary values for 6–18 years olds on the basis of cardiovascular disease (CVD) risk factor assessment. Methods: We analyzed the height, weight, WC and its metabolic indication data (blood pressure, fasting blood glucose, and blood lipids) of 15 000 children in Guangzhou, aged 6–18, with the receiver-operating characteristic curve (ROC), and explored the best value point of WC and WHtRfor the prediction of cardiovascular diseases. Results: When the WC percent reached P85, and WHtR reached 0.48, the cardiovascular risk factors of fasting blood-glucose, blood pressure, and blood fat were signiifcantly higher. Conclusion: The 85th percentile value of WC and 0.48 of WHtR are the appropriate boundary values in increasing the cardiovascular disease risk factors in Chinese children and teenagers. WC and WHtR as a relatively simple inspection method, can well predict cardiovascular diseases, and be used in the conventional measuring items among students.

Effects of signaling-selective parathyroid hormone peptide analog on fracture healing in orchiectomized mouse models / 南方医科大学学报

<p><b>OBJECTIVE</b>To assess the effect of intermittent subcutaneous injections of signal-selective parathyroid hormone (PTH) peptide analog on fracture healing in orchiectomized mouse models.</p><p><b>METHODS</b>Thirty-six 7-week-old C57/BL male mice were orchiectomized and injected with hPTH(1-34), the signal-selective PTH peptide analog [Gly(1), Arg(19)]hPTH (1-34), or an identical volume of vehicle 1 week after induction of femoral fracture. At 14 and 28 days after the operation, the mice were sacrificed for measurement of bone mineral density (BMD) and bone mineral content (BMC) of the callus using by dual energy X-ray absorptiometry. The bone healing was evaluated by radiography, biomechanical testing, micro-computed tomography (Micro-CT) and histological examination.</p><p><b>RESULTS</b>At 14 days after the operation, BMD in PTH peptide analog group was significantly increased (P<0.05). The mouse models treated with the PTH peptide analog showed significantly lower ultimate bending force and bending rigidity than those with hPTH(1-34) treatment. X-ray and Micro-CT scanning showed that callus transformation and remodeling was better in PTH peptide analog group than in the vehicle control group but poorer than in hPTH(1-34) group.</p><p><b>CONCLUSION</b>The signaling-selective PTH peptide analog G1, R19 (1-28) can accelerate fracture healing in orchiectomized mouse models, in which process cAMP/PKA pathway plays an important role.</p>

Biomechanical study of vertebroplasty with geneX(®) cement augmentation in a calf osteoporotic vertebral compression fracture model / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the biomechanical properties of geneX cements for use in vertebroplasty in a calf osteoporotic vertebral compression fracture model.</p><p><b>METHODS</b>Thirty vertebral bodies (T(9)-L(4)) were harvested from 4 fresh calf spines. The bone mineral density was measured with dual-energy radiographic absorption. Osteoporotic vertebral model was induced in each vertebra using decalcifying chemical agents, and was then compressed to determine their initial strength and stiffness before injecting the cement. Thirty vertebral bodies were divided randomly into geneX(®) cement group, CSC group, and PMMA group. The fractures were repaired using a transpedicular injection of cements and re-compressed to measure posttreatment strength and stiffness.</p><p><b>RESULTS</b>The normal mean BMD of the calf vertebra was 1.425∓0.072 g/cm(2), which was reduced significantly to 1.074∓0.065 g/cm(2) after decalcification. The mean injected volume was similar between geneX(®) (4.5∓0.7 ml), CSC (4.3∓0.8 ml) and PMMA (3.8∓0.4 ml) groups. The vertebral strength was restored after the treatment to 1198∓529 N in geneX(®) group, 1212∓430 N in CSC group and 1672∓704 N in PMMA group. All the cements produced significantly greater strength than the initial strength (P<0.05). The augmented strength in geneX(®) and CSC groups were similar (P>0.05), but both were significantly less than that in PMMA group (P<0.05). The stiffness in geneX(®), CSC, and PMMA groups was 233∓130, 242∓191, and 323∓145 N/mm, respectively, showing no significant difference between them (P>0.05). No significant difference was found in the augmented stiffness among the 3 cements (P>0.05).</p><p><b>CONCLUSION</b>geneX(®) cement is a useful alternative to PMMA in vertebroplasty for osteoporotic vertebral compression fractures, but further study is needed to evaluate its biosorption in vivo.</p>

Mental Health Literacy in Three Cities of China:A Survey Study / 中国心理卫生杂志

Objective:To assess mental health literacy of urban porpulation and its related factors.Method:Subjects were sampled from 3 cities in the east(Wuxi),central(Changsha)and west(Xi'an)part of China.Subjects were asked to answer a questionnaire which included 5 vignettes of mental disorders and related questions.Results:54.1% of 7309 participants correctly recognized the cases of mania,but only 11.2% correctly recognized the cases of schizophrenia with negative symptoms.The average rate of correct recognition for all 5 vignettes was 41.7%.Participants with higher education level recognized the vignettes more correctly.Ill-character,stress and the pressure from work were reported to be the 3 main reasons of mental disorders.There were strong negative attitudes toward psychiatric patients,especially those with schizophrenia and mania.Conclusion:While the rate of correct recognition of mental disorders is acceptable when compared with similar studies in other parts of the world,negative attitude toward patients with mental disorder is still prevalent in China.

Preparation and activity analysis of hu3D3/core-streptavidin fusion protein as a universal carrier targeting to lung cancer / 中华微生物学和免疫学杂志

Objective To prepare a novel fusion protein of hu3D3 and core-streptavidin(hu3D3/cSA) as a universal carrier targeting to lung cancer,and analyze its activities. MethodscSA gene was acquired by PCR,and inserted into plasmid hu3D3/pET-22b(+)to construct a recombinant plasmid hu3D3/cSA/pET-22b(+)．The fusion gene was expressed in E. Coli BL21(DE3).The fusion protein was purified through nickel-affinity chromatography column and renatured using TEA buffer. The tetrameric hu3D3/cSA complex was analyzed by SDS-PAGE and Western blot.The hu3D3/cSA protein was labeled with FITC,then its antigen-binding activity was analyzed using fluorescence microscopy,and the functional affinity of hu3D3/cSA and hu3D3 were analyzed and compared by flow cytometry. The biotin-binding activity of hu3D3/cSA was tested bv EUSA and Western blot. Results The recombinant plasmid hu3D3/cSA/pET-22b(+)with correct sequence was obtained. The fusion protein was found after expression in E. Coli BL21 (DE3)mainly in the form of inclusion body. After being purified and refolded,tetrameric complex was formed. The purified tetrameric hu3D3/cSA complex retained both antigen-binding activity of hu3D3 moiety and biotin-binding activity of cSA moiety:furthermore,the avidity of the hu3D3/cSA to its target antigen increased by about 14 times as compared with that of monomeric hu3D3. Conclusion The fusion protein hu3D3/cSA with both antigen- and biotin-binding activity is SHCCessfully prepared,and the avidity of hu3D3 moiety to 3D3 antigen is enhanced. Consequently,hu3D3/cSA could be a universal carrier targeting to lung cancer, and could be an alternative,convenient method to realize target therapy to lung cancer by the combination of multiple biotinylated anti-tumor drugs or agents.