BACKGROUND:Intertrochanteric fractures are often treated with extramedulary fixation and intramedulary fixation. Which internal fixation can better repair intertrochanteric fractures remains controversial. OBJECTIVE: To compare the efficacy and safety of dynamic hip plate and proximal femoral intramedulary nail fixation in treatment of intertrochanteric fracture in adults. METHODS: Al randomized clinical trials relevant to comparing proximal femoral intramedulary nail fixation with dynamic hip plate for intertrochanteric fracture in adults from 1966 to 2013 were identified. The quality of the trials was assessed. The outcomes included length of surgery, operative blood loss, postoperative femoral shaft fracture, cut-out of the implant from the femoral head, non-union of the fracture, reoperation rate, wound infection, postoperative hip pain (hip joint pain and thigh pain), which were extracted and reviewed systematicaly. RESULTS AND CONCLUSION:4 757 trial participants with 4 748 fractures were included in the 31 published trials. There was no significant difference in the length of surgery, reoperation rate, cut-out of the implant from the femoral head, non-union of the fracture, wound infection and postoperative hip pain between the two groups (P > 0.05) between dynamic hip plate and proximal femoral intramedulary nail fixation. Compared with dynamic hip plate fixation, proximal femoral intramedulary nail fixation had less blood loss and significantly higher rate of femoral shaft fractures (P=0.003). Experimental findings show that, in treatment of intertrochanteric fracture, intramedulary nail fixation is associated with significantly lower blood loss. However, the risk of femoral shaft fracture is increased compared with dynamic plate fixation. There were no differences in length of surgery, cut-out of the implant from the femoral head, non-union of the fracture, reoperation rate, wound infection and postoperative hip pain. The results of this systematic review should be explained prudently because of some limitations of included trials. To obtain more reliable conclusions, large-scale randomized controled trials of strict design, uniform index and long-term folow-up are needed.

Chemoimmunotherapy or biochemotherapy, the combination of chemotherapy with immunotherapy, is a novel compre-hensive treatment model for malignant carcinoma. In recent years, many clinical trials have shown that biochemotherapy is associated with an improved response rate. Such biological agents include tumor vaccines, monoclonal antibodies, cytokines, and immunocompe-tent cells. In this article, we review the theories, sort the clinical applications of novel treatments, and discuss some of the problems existing in this field.

ObjectiveTo investigate the neuroprotective effects of pyrroloquinoline quinine (PQQ) on oxygen and glucose deprivation (OGD) in cultured rat neuroblastoma cells Neuro2A and the possible mechanisms involved. MethodsCultured rat neuroblastoma cells Neuro2A were pretreated or not pretreated with increasingly concentrations of PQQ, were exposed to 2 h combined OGD in an anaerobic chamber followed by reoxygenation of 6 h. The results on cellular morphology, cell viability，apoptotic cells, reactive oxygen species (ROS), and glutathione (GSH) were compared between OGD and PQQ group. ResultsPretreatment of PQQ (0.4, 0.8, 1.6, 3.2, 6.4, 12.8 μmol/L) increased the cell viability (P＜0.05) and GSH level, decreased the contents of ROS and the percentage of apoptotic cells in cortical neurons exposure to OGD (P＜0.01). ConclusionPQQ exhibits remarkable protection against hypoxia/reoxygenation injury in Neuro2A cells, which may be associated to the inhibiting the oxidative stress and subsequent apoptosis.

The high frequency subject headings were extracted from papers published in Journal of American Medi-cal Informatics Association from 2006 to 2015 to form a matrix of high frequency subject headings and their source papers. The co-occurrence of high frequency subject headings in a paper was clustered and analyzed, which showed that studies in Journal of American Medical Informatics Association from 2006 to 2015 were focused on the design and development of clinical software or platform, application of data mining in medical field, and clinical decision-making support system.

Objective To explore the risk factors of asthma in children with bronchiclitics.Methods One hundred and two cases hospita-lized patients with bronchiolitis were analyzed and followed-up for 2-7 years,items of follow-up included sex,morbidity age,food feeding,severity of disease,atopy physique,family history of atopy/asthma,environment exposure,passive smoking,and so on.The factors were carried on the Logistic regression analysis to determine the influence on later years to having recurrent asthma.Results Forty-seven cases had transferred asthma,which was remarkably higher than the domestic urban survey data(0.12%-3.34%).The multi-factors Logistic regression analysis demonstrated that environment(OR 6.099,95%CI 1.824～20.396),passive smoking(OR 49.222,95%CI 8.219-294.774),atopy physique (OR 45.548,95%CI 6.799-305.117)and family history of atopy/asthma(OR 47.921,95%CI 8.626-266.226)were the risk facter of asthma( Pa

The dynamic characteristics of the area of the atrial septal defect (ASD) were evaluated using the technique of real-time three-dimensional echocardiography (RT 3DE),the potential factors re sponsible for the dynamic characteristics of the area of ASD were observed,and the overall and local volume and functions of the patients with ASD were measured,RT 3DE was performed on the 27 normal controls and 28 patients with ASD.Based on the three-dimensional data workstations,the area of ASD was measured at P wave vertex,R wave vertex,T wave starting point,and T wave terminal point and in the T-P section.The right atrial volume in the same time phase of the cardiac cycle and the motion displacement distance of the tricuspid annulus in the corresponding period were measured.The measured value of the area of ASD was analyzed.The changes in the right atrial volume and the motion displacement distance of the tricuspid annulus in the normal control group and the ASD group were compared.The right ventricular ejection fractions in the normal control group and the ASD group were compared using the RT 3DE long-axis eight-plane (LA 8-plane) method.Real-time three-dimensional volume imaging was performed in the normal control group and ASD group (n=30).The right ventricular inflow tract,outflow tract,cardiac apex muscular trabecula dilatation,end-systolic volume,overall dilatation,end-systolic volume,and appropriate local and overall ejection fractions in both two groups were measured with the four-dimensional right ventricular quantitative analysis method (4D RVQ) and compared.The overall right ventricular volume and the ejection fraction measured by the LA 8-plane method and 4D RVQ were subjected to a related analysis.Dynamic changes occurred to the area of ASD in the cardiac cycle.The rules for dynamic changes in the area of ASD and the rules for changes in the right atrial volume in the cardiac cycle were consistent.The maximum value of the changes in the right atrial volume occurred in the end-systolic period when the peak of the curve appeared.The minimum value of the changes occurred in the end-systolic period and was located at the lowest point of the volume variation curve.The area variation curve for ASD and the motion variation curve for the tricuspid annulus in the cardiac cycle were the same.The displacement of the tricuspid annulus exhibited directionality.The measured values of the area of ASD at P wave vertex,R wave vertex,T wave starting point,T wave terminal point and in the T-P section were properly correlated with the right atrial volume (P＜0.001).The area of ASD and the motion displacement distance of the tricuspid annulus were negatively correlated (P＜0.05).The right atrial volumes in the ASD group in the cardiac cycle in various time phases increased significantly as compared with those in the normal control group (P=0.0001).The motion displacement distance of the tricuspid annulus decreased significantly in the ASD group as compared with that in the normal control group (P=0.043).The right ventricular ejection fraction in the ASD group was lower than that in the normal control group (P=0.032).The ejection fraction of the cardiac apex trabecula of the ASD patients was significantly lower than the ejection fractions of the right ventricular outflow tract and inflow tract and overall ejection fraction.The difference was statistically significant (P=0.005).The right ventricular local and overall dilatation and end-systolic volumes in the ASD group increased significantly as compared with those in the normal control group (P=0.031).The aRVEF and the overall ejection fraction decreased in the ASD group as compared with those in the normal control group (P=0.0005).The dynamic changes in the area of ASD and the motion curves for the right atrial volume and tricuspid annulus have the same dynamic characteristics.RT 3DE can be used to accurately evaluate the local and overall volume and functions of the right ventricle.The local and overall volume loads of the right ventricle in the ASD patients increase significantly as compared with those of the normal people.The right ventricular cardiac apex and the overall systolic function decrease.

Isocitrate lyase (ICL) which plays a pivotal role in the glyoxylate cycle of mycobacterium tuberculosis(MTB) could be a potential target against mycobacterium tuberculosis.Deoxyribozyme(DRz) is a small single-strand,enzymatic DNA molecule.Assistant by sketch of secondary structure,appropriate and not appropriate target sequences of MTB ICL mRNA were predicted.Two DRzs were designed targeting above sequences respectively.To affirm feasibility of this kind of prediction,in vitro cleavage of MTB ICL mRNA segment by DRz-ICLcf and DRz-ICLcj were performed.The results showed that sketch of secondary structure could indeed predict potential target of DRz.This research will provide basis for developing DRz as a novel antimicrobial agent against MTB.

ObjectiveTo investigate effects of pamidronate on the proliferation and differentiation of osteoblasts of rats in vitro.MethodsOsteoblasts isolated from newborn rat calvaria were treated with various concentrations of pamidronate, the proliferation of osteoblasts was evaluated with the method of methyl thiazole tetrazolium (MTT) and activity of alkaline phosphatase (ALP) in medium was measured with kit of ALP detecting.ResultsThe proliferation of osteoblasts increased under the stimulation of Pamidronate range 10-6-M-10-12 M(P<0.05), but was inhibited at the concentration of high level (10-4 M). The activity of ALP decreased in the experiment.ConclusionPamidronate can act on the osteoblasts directly and increase the proliferation of bone cells, but inhibit the differentiation of the same cells.

Animals ; Biogenic Polyamines ; metabolism ; Biological Transport ; Humans ; Paraquat ; poisoning ; Pulmonary Edema ; metabolism

Decontamination ; methods ; Gastric Lavage ; methods ; Humans ; Poisoning ; therapy