This study introduced the producing theory and producing region of electroencephalogram(EEG)signal as well as containing physiological information and analyzed the purpose,method and procedure of EEG signal pattern recognition,as well as the latest development and related medical theory of EEG signal acquisition.The procedure of EEG signal pattern recognition consisted of information acquisition,preprocessmg,feature extraction and selection,classification estimation and recognition.By studying the association between EEG signal and prosthetic movement,it was concluded that EEG signal controlling prosthesis was feasible.Therefore,a prosthetic controlled system was designed based on EEG signal pattern recognition and acquisition.The system initiated from scalp electrode(or prosthetic electrode),passed through differential amplifier circuit(or prosthetic drive circuit),pre-amplifier circuit,trap circmt,med-amplifier circuit,and filter circuit,and finally reached analog-to-digital converter.It was proven to satisfy various

Objective To examine whether electroacupuncture at the Wangu acupoint (GB 12 ) , whose position is similar to the cerebellar fastigial nucleus ,can reduce inflammatory cytokines in the hippocampus of rats with vascular dementia (VD) to provide theoretical evidence for treating VD with electroacupuncture .Methods Healthy Sprague‐Dawley rats ( n=54 ,300 -450 g) were randomly divided into three groups :sham surgery group ,VD group ,and electroacupuncture group .The ethologic scores of VD rats were evaluated and the mRNA expressions of inflammatory cytokines (TNF‐α,IL‐6 and IL‐1β) in the hippocampus were assessed and the hippocampal tissues were observed by hematoxylin‐eosin (HE) staining .Results Compared with VD group ,in electroacupuncture group the rats' learning ability improved significantly and the mRNA expressions of TNF‐α, IL‐6 and IL‐1β decreased . Simultaneously ,the damage extent of nerve cells in the hippocampal tissues decreased , and their morphology recovered to nearly normal .Conclusion Electroacupuncture at the Wangu acupoint can decrease the level of inflammatory cytokines in the hippocampus and reduce the damage extent of nerve cells in the hippocampus ,thus providing a new neuroprotective method for VD .

We reported a clinical caseof gas gangrene in the lower back and buttocks due to local intramuscular injection. A 43-year-old male was treated by local private clinic for low back pain. He underwent local intramuscular injection in his lower back and buttocks. 5 or 6 hours after the treatment,he felt worsen of low back pain (VAS 5 points)with a fever. After one day of treatment, the lower back pain was even worse(VAS 8 points). And he had soy-sauce urine and a high fever. The results of laboratory examination and clinical manifestation suggested multiple organ failure within a short period of time. Imaging (CT) suggested large area of gas and muscle necrosis in the lower back and buttocks. Considering the progress of the disease, emergency surgery on lumbar back and right buttocks was performed after hospitalization. Rapid bacterial smear reported gram-positive coarse bacteria. Anaerobic culture suggested clostridium perfringens. Aerobic culture result did not show any bacterial growth. According to the clinical manifestation, imaging (CT), intraoperative judgment and postoperative anaerobic culture results, the clinical diagnosis was gas gangrene. Gas gangrene is a special infectious disease in clinic, which can be characterized by low morbidity, difficult early diagnosis,rapid disease progression and high mortality. Sinceintramuscular injection leaded to this disease in our case, the importance of standardized aseptic procedures should be emphasized.

Objective To analyze the compatibility laws of homologous Chinese medicine of medicine and food in prevention and treatment of Alzheimer disease (AD). Methods We screened the clinical literature for the treatment of AD during 1988-2012 in TCM Clinical Diagnosis and Treatment Database, CNKI, VIP and Wanfang database. The nature, flavor, channel tropism, high frequency drug pair and compatibility laws of Chinese medicine and homologous Chinese medicine of medicine and food in prevention and treatment of AD were analyzed by frequency statistics and association rules. Results Two hundred and twenty-two clinical literatures were included. The top five frequently-used homologous Chinese medicines of medicine and food were Poria, Fructus Lycii, Fructus Alpiniae Oxyphyllae, Semen Persicae, and Rhizoma Dioscoreae. The top five frequently-used medicine were Rhizoma Acori Tatarinowii, Radix Polygalae, Rhizoma Ligustici Chuanxiong, Radix Salviae Miltiorrhizae, and Radix Angelicae Sinensis. The top five frequently-used drug pairs of homologous Chinese medicine of medicine and food were Rhizoma Dioscoreae→Poria, Poria→Pericarpium Citri Reticulatae, Rhizoma Dioscoreae→Fructus Lycii, Fructus Lycii→Fructus Alpiniae Oxyphyllae, and Fructus Lycii→Poria. The top five frequently-used drug pairs were Rhizoma Acori Tatarinowii→Radix Polygalae, Radix Salviae Miltiorrhizae→Rhizoma Acori Tatarinowii, Rhizoma Ligustici Chuanxiong→Rhizoma Acori Tatarinowii, Radix Salviae Miltiorrhizae→Rhizoma Ligustici Chuanxiong, and Rhizoma Acori Tatarinowii→Radix Astragali Seu Hedysari. Conclusion The commonly used homologous Chinese medicine of medicine and food in preventing and treating AD are tonic herbs with mild nature.

Objective:To analyze the relationships between baseline percentage of pulmonary perfusion defect scores (PPDs%) and residual pulmonary hypertension after pulmonary endarterectomy in chronic thromboembolic pulmonary hypertension (CTEPH) patients.Methods:A total of 37 CTEPH patients (21 males, 16 females, age (50±12) years) who had pre- and post-pulmonary endarterectomy ventilation/perfusion (V/Q) scans from January 2016 to January 2019 at Fuwai Hospital were retrospectively collected. Residual pulmonary hypertension was defined as post-surgery mean pulmonary artery pressure (mPAP) higher than 30 mmHg (1 mmHg=0.133 kPa). Semi-quantitative index PPDs% was calculated to represent the extent of impaired perfusion in the whole lung. Pre- and post-surgery pulmonary hemodynamic parameters including pulmonary arterial pressure and resistance and lung perfusion were compared. Factors that may be related residual pulmonary hypertension were analyzed using logistic regression analysis. Paired t test and independent-sample t test were also used. Results:Pulmonary endarterectomy significantly decreased mPAP ((50.22±11.72) vs (26.41±10.61) mmHg; t=12.599, P<0.001) and pulmonary vascular resistance((10.06±5.48) vs (2.89±1.58) Wood unit; t=8.086, P<0.001). The number of defected lung segments (13.79±2.11 vs 5.52±2.82; t=11.593, P<0.001) was significantly reduced. Patients who had residual pulmonary hypertension ( n=11) exhibited significantly higher PPDs% before the surgery compared to those who were without residual pulmonary hypertension ( n=26; (57.48±5.88)% vs (47.77±11.09)%; t=-3.458, P=0.002). Baseline PPDs% was an independent factor for predicting residual pulmonary hypertension after pulmonary endarterectomy (odds ratio ( OR)=1.106, 95% CI: 1.006-1.216, P=0.036). Conclusions:Pulmonary V/Q scan can assess the therapeutic effects of pulmonary endarterectomy. Extent of impaired lung perfusion assessed by V/Q scan is the influencing factor for post-surgery residual pulmonary hypertension.

Grass carp reovirus (GCRV), a double stranded RNA virus that infects aquatic animals, often with disastrous effects, belongs to the genus Aquareovirus and family Reoviridea. Similar to other reoviruses, genome replication of GCRV in infected cells occurs in cytoplasmic inclusion bodies, also called viral factories. Sequences analysis revealed the nonstructural protein NS80, encoded by GCRV segment 4, has a high similarity with uNS in MRV(Mammalian orthoreoviruses), which may be associated with viral factory formation. To understand the function of the uNS80 protein in virus replication, the initial expression and identification of the immunogenicity of the GCRV NS80 protein inclusion forming-related region (335.742) was investigated in this study. It is shown that the over-expressed fusion protein was produced by inducing with IPTG at 28oC. In addition, serum specific rabbit antibody was obtained by using super purified recombinant NS80(335.742) protein as antigen. Moreover, the expressed protein was able to bind to anti-his-tag monoclonal antibody (mouse) and NS80(335-742) specific rabbit antibody. Further western blot analysis indicates that the antiserum could detect NS80 or NS80C protein expression in GCRV infected cells. This data provides a foundation for further investigation of the role of NS80 in viral inclusion formation and virion assembly.

Dioscin is the main raw material for the synthesis of steroid hormone drugs. Currently, the direct acid hydrolysis is the mainly industrial production method for dioscin. However, the use of strong acid can not only destroy the structure of dioscin resulting in very low yield, but also produce a large amount of waste water and residues, which seriously pollute the environment. So the clean production of dioscin is the urgent demand of water conservation and environmental protection. In the paper, the recent research pro-gresses in the clean production technology and process of dioscin were summarized, and the advantages and problems were discussed in order to provide reference for the improvement and application of the new technology and process.

Objective To compare the efficacy of reversed less invasive stabilization system (LISS) and intramedullary fixation devices for treatment of femoral trochanteric fractures.Methods Data of 362 consecutive patients with femoral trochanteric fractures who were treated with reversed LISS or intramedullary fixation devices at our institution between March 2004 and May 2011 were retrospectively analyzed.There were 32 males and 38 females treated with reversed LISS.The mean age at injury was 73.4 years.There were 125 males and 167 females treated with intramedullary fixation.The mean age at injury was 74.7 years.The operation time,intraoperation blood loss and length of hospitalization were compared.The patients were asked to fill in a questionnaire of Harris hip score,and radiographs were used to evaluate the bone healing situation.Results The mean operation time was 120 min in reversed LISS group and 80 min in intramedullary group.The length of hospitalization was 12 days in reversed LISS group and 10 days in intramedullary group.More operation time and longer length of hospitalization were needed in reversed LISS group.The intraoperation blood loss was 100 ml in reversed LISS group and 100 ml in intramedullary group.There were 3 DVT in reversed LISS group,10 DVT and 3 PE in intramedullary group.No difference was found in the aspect of intraoperation blood loss,postoperative deep venous thrombosis and pulmonary embolism rate.A total of 320 patients were successfully followed-up,including 63 in LISS group and 257 in intramedullary group.The median Harris score was 75 in LISS group and 77 in intramedullary fixation group respectively.There was no difference of hip function score between two groups.The implant-related complication rate was 11.1％ in reversed LISS group,including 7 implant breakages.In intramedullary fixation group,there were neck screw exiting in 2 patients and cutout in 9 patients.So the implant-related complication rate was 4.3％ in intramedullary fixation group,which is statistically lower.Conclusion Both reversed LISS and intramedullary are effective for the treatment of proximal femoral fractures.There were no major difference in functional outcome between LISS and intramedullary nail.Intramedullary nail is still the choice of priority in most unstable proximal femoral fractures.The implants related complications in reversed LISS group are higher than Intramedullary nail group.However,for the unstable fractures proximal femoral fractures with lateral wall fracture,in which nailing may be difficult,reversely using LISS may be a good alternative.

It is a brief review of our research on the role of metallothioneins (MTs) in the occurrence and development of hepatocellular carcinoma (Hcc) in more than a decade,and the mechanism of prevention and treatment for Hcc in the field of TCM.It was found that MTs were required for the malignant proliferation of Hcc cells and their expressions significantly increased under different levels of stress.MTs may exert their effects on promoting proliferation via increasing ribosomal protein gene or other gene expressions.The over-expressions of MTs directly altered the balance of ions in the cell nucleus,and interacted on the genes promoting malignant proliferation.Hepatotoxicity and hepatic damage caused by DEN were reduced and relieved to different extents by the representative formula or constitute,which under the common therapeutic principle,by which MTs expressions were down-regulated as well.In conclusion,both effects above are important in the liver protection,inhibition of hyperplasia and carcinogenesis.

Objective This study is undertaken to evaluate the changes of serum cytokine levels in different stages of collagen induced arthritis(CIA)rats,to search for the specific proteins related with rheuma- toid arthritis(RA)pathogenesis and inflammation,and to explore the mechanism of RA pathogenesis.Methods Rat cytokine antibody array coated with 19 specific cytokine antibodies was used to examine serum samples at peak and late stage of CIA rats,and were compared to normal cytokine levels.At the same time,ELISA assay for serum TNF-?production was used to verify the array results.Results Among the target cytokines,10 up- regulating cytokines were kept in high expression in different phases of disease,while 1 showed significant change only at the peak of disease.There was no downregnlating cytokines in the results.Serum TNF-?assay results were consistent to the array results.Conclusion Cytokines show different expression in CIA at differ- ent stages,and specific cytokines can be used as the candidates to further study of the RA pathogenesis.This study also provides molecular makers for early diagnosis.