The nuclear factor erythroid 2 related factor 2 (Nrf2) is a key protein of endogenous antioxidant defense systems in the body. In response to oxidative stress, Nrf2 translocates to nucleus and binds to antioxidant response elements (ARE), regulating the expression of a large amounts of antioxidant genes and maintaining a proper redox balance. The pathological processes of neurodegenerative diseases are associated with generation of reactive oxygen species, which cause oxidative stress. Oxidative stress plays a cardinal role in the onset and progression of neurodegenerative diseases. Nrf2-inducer compounds can reduce oxidant stress and have shown therapeutic efficacy in many neurodegenerative disease models. How to activate the Nrf2 signaling pathway effectively has been received much attention. Here we provided an overview of specific mechanism of Nrf2-ARE pathway and the protective effects of Nrf2 in different neurodegenerative diseases, and summarized the Nrf2 activators recently in preclinical study.
Antioxidants ; physiology ; Humans ; NF-E2-Related Factor 2 ; physiology ; Neurodegenerative Diseases ; metabolism ; Oxidative Stress ; Reactive Oxygen Species ; metabolism ; Signal Transduction

ObjectiveTo explore the relative factors of the compliance in schizophrenic out-patients.Methods118 schizophrenic out-patients chosen randomly were investigate with the compliance and assessed with Clinical Global Impression-Severity of Illness (CGI-SI), Social Disability Screening Schedule (SDSS), Brief Psychiatric Rating Scale (BPRS) and Treatment Emergent Symptom Scale (TESS) by telephone. Logistic regression analysis was used to confirm the relative factors of the compliance.Results56.8% of all patients were of full compliance. The risk factors of compliance in schizophrenic out-patients were the frequency of medicine taken, the scores of CGI-SI and the insight of the illness. ConclusionIt is important to choose effective and convenient antipsychotic drugs and improve the insight of the illness to enhance the compliance of the schizophrenic out-patients.

Both sides of the picornavirus genome have 5'-untranslated region (5'UTR) and 3'- untranslated region (3'UTR). This study demontrated that both the 5'-and 3'-UTR can form complex structures, such as stem-loop, clover and pseudoknot structure, These structures play an important role in the regulaton of the replication and translation of the viruses. This article reviewed the progress of research on the structure and function of picornavirus' 3'-UTR over recent years.
3' Untranslated Regions ; Animals ; Humans ; Nucleic Acid Conformation ; Picornaviridae ; chemistry ; genetics ; metabolism ; Picornaviridae Infections ; virology ; RNA, Viral ; chemistry ; genetics ; metabolism

Mitochondrial dysfunction has been implicated in the aetiology of sporadic Parkinson's disease but its role in the disease mechanism remains unclear.To investigate the effect of synuclein on mitochondrial dysfunction induced by rotenone.The human dopaminergic SH-SY5Y cells were used as a cell model.The cells over-expressed the wild-type ?-synuclein were treated with complex I inhibitor rotenone.The cell viability,complex I activity,Mitochondrial swelling and O2-content were tested at different time point-1w,2w,4w after rotenone treated.CCK-8 test results showed that the cell viability of overexpressed ?-synuclein(SH-SY5Y-Syn)was much lower than the control group(SH-SY5Y-Ctr).After administrating with rotenone about 1w or 2w the cell viability of SH-SY5Y-Syn became higher than that of SH-SY5Y-Ctr.On the 4th week the results were contrary to the first 2 weeks.Similar results were got when test the mitochondrial function.In the first 2 weeks after roteoone administrating,the mitochondrial function of SH-SY5Y-Syn was better than that of SH-SY5Y-Ctr.This suggest that the ?-synuclein could protect the mitochondrial against the injury induced by rotenone in the early stage-1w,2w,while this effect disappeared in the final stage-4w.

The specific fragment of Pneumococcal surface protein A(PspA)and Pneumococcal Surface Adhesin A(PsaA)gene was amplified by PCR from Streptococcus pneumonia 5 and Streptococcus pneumonia 19.The amplified fragnent of PspA and PsaA gene was ligated into pET-27b(+)vector and transformed into BL 21 E.coli for expression and obtain the expressive production of PspA and PsaA.Induced by IPTG,the expression level was as high as 75 % of the total disolube protein.The result showed that the recombinant plasmid could express a specific 75 kDa and 37 kDa fusion protein in E.coli BL 21,which showed the good immunogenicity and a broadly cross reactivity with the other serotypes.

Objective To observe the clinical effect of neonatal respiratory failure therapy with mechanical ventilation. Methods Forty - eight cases of neonatal respiratory failure were applied endotracheal intubation through mouth. At first, ventilation was given via the intermittent positive - pressure ventilation + peak end - expiratory pressure( IPPV + PEEP) way. Later, the breath parameters were regulated and transited to the intermittent mandatory ventilation( IMV) way according to original illness. When frac - tional concentration of in-spired gas(FiO2)

OBJECTIVETo explore method of recombinant gene lentivirus containing LIM mineralization protein-1 (LMP-1) in transfecting bone marrow mesenchymal stem cells (BMSC), and to observe the effect of gene LMP-1 on proliferation effect and expression of BMSC.

METHODSSix clean SD rats aged 4 weeks were selected, bone marrow mesenchymal stem cells were extracted under sterile conditions and cultured to the third generation, then divided into three groups:control group (the third generation of BMSC), lentiviral vector transfection group (PGC-FU-GFP and Polybrene were injected into the third generation of BMSC) and recombinant gene transfection group (PGC-FU-LMP-1-GFP and Polybrene transfection were injected into the third generation of BMSC). After 48 hours' transfection, fluorescent expression were detected under immuno-fluorescence microscopy; lentiviral transfection efficiency were detected by flow cytometry; effect of lentiviral transfection on BMSC were evaluated by MTT; gene expression of transfected cells were determined by Western Blot.

RESULTS1) The third generation of BMSC was cultured successfully,and transfected with MOI:100. After 48 hours, green fluorescent expression were detected and transfection efficiency was 67% under immuno-fluorescence microscopy; 2) Compared to control group, there were no statistical differences between control group and other two groups; 3) Western blot teast showed that 72KDa specific band was observed in recombinant gene transfection group and its size was similar to LMP-1 fusion protein (50 kDa+28 kDa=78 kDa).

CONCLUSIONThere is no effect of recombinant gene lentivirus containing LIM on BMSC, and can effectively influence the expression of LMP-1.

Adaptor Proteins, Signal Transducing ; genetics ; metabolism ; Animals ; Cell Proliferation ; Cells, Cultured ; Cytoskeletal Proteins ; genetics ; metabolism ; Female ; Genetic Therapy ; Genetic Vectors ; genetics ; metabolism ; Humans ; LIM Domain Proteins ; genetics ; metabolism ; Lentivirus ; genetics ; metabolism ; Male ; Mesenchymal Stromal Cells ; cytology ; metabolism ; virology ; Osteoporosis ; genetics ; physiopathology ; therapy ; Rats ; Rats, Sprague-Dawley

OBJECTIVETo investigate the influence of different methods of semen preservation and processing on sperm DNA integrity.

METHODSWe collected semen samples from 100 normozoospermic male volunteers and, following homogeneous mixing, preserved them by means of snap freezing, slow freezing, or at the room temperature for 4 and 24 hours. Meanwhile we processed the semen by washing, swim-up, and density gradient centrifugation (DGC). Then we obtained the sperm DNA fragmentation index (DFI) by sperm chromatin dispersion test and measured total sperm motility and DFI after cultured for 24 hours following processing.

RESULTSThe sperm DFIs after 4 hours of preservation by snap freezing, slow freezing, and at the room temperature were (27.3 ± 6.4)%, (26.9 ± 6.1)%, and (24.7 ± 6.8)%, respectively, and that after preserved at the room temperature for 24 hours was (35.6 ± 9.0)%, with statistically significant differences between the first three and the 24-hour room temperature preservation groups (P < 0.05) but not among the former three groups (P > 0.05). The sperm DFI was significantly higher in the samples processed by washing ([13.7 ± 2.0]%) than in those processed by swim-up ([9.1 ± 1.3]%) and DGC ([8.0 ± 2.5]%) (P < 0.05), and it was the lowest in the DGC group after 24-hour culture ([11.5 ± 4.2]%) as compared with the other groups (P < 0.05).

CONCLUSIONSperm DNA integrity is influenced by different semen preservation conditions and processing methods.

Centrifugation, Density Gradient ; DNA Fragmentation ; Humans ; Male ; Semen ; Semen Analysis ; Semen Preservation ; methods ; Sperm Motility ; Spermatozoa ; cytology

Objective To analysis the inherent quality of highly cited papers published in Chinese Journal of Endemiology, so as to identify the direction of invitation for contributions, find high quality articles, and to improve the journal's core competitiveness. Methods Scientific papers published in Chinese Journal of Endemiology from 2000 to 2006, with citation rate equal to or higher than 20 times were retrieved in China National Knowledge Infrastructure(CNKI) by December 27, 2010. These articles were statistically analyzed according to publication year, section type, author, and geographical distribution of units. Results A total of 68 highly cited papers were obtained. The citation frequency of the highly cited papers ranged from 20 to 94, with an average of 31.09 times. The highly cited papers were published in 2000 at most, accounting for 25.0%(17/68); followed by 2001,accounting for 20.6% (14/68); at least in 2006, accounting for 2.9% (2/68). Of the highly cited papers, experimental study articles was in the highest proportion of 30.9%(21/68); followed by field epidemiological investigation articles,accounting for 23.5%(16/68); editorial, review articles accounting for 10.3%(7/68) and 8.8%(6/68), respectively;short reports, case reports, meeting records etc were not highly cited papers. The number of highly cited papers in editorial, expert forums, academic contend accounted for higher proportion of total number in corresponding section types(7/19, 3/11, 3/7). Highly cited papers came from 13 provinces(municipalities), there were 10 authors contributed two or more highly cited papers, and 8 units contributed two or more highly cited papers. Conclusions Adequate space should be given to experimental research, field epidemiological investigation, editorial, expert forums andacademic contend articles due to their high rate of citation. More attention should be paid to further consolidate and expand excellent authors group, and to intensify the invitation for key issues from influential experts.

Objective To clone and express specific genes (YP01089,psi.ymt) from Yersinia pestis in Escherichia Coli(E.coli)and to analyze the antigenicity of these recombinant proteins.Methods The target genes were amplified by polymerose chmn reaction(PCR).The amplified products were ligated with pET-30a(+) vector after purification and cut by two different restriction enzymes,then these recombinant plasmids were transfefred into the host cells of E.coli BL21(DE3) strain.The target genes were successfully expressed following induction with Isopropyithio-β-D-galactoside(IPTG),and the target proteins were purified by the method of affinity chromatography.Sodium dodecyl sulfate-polyaerylamide gel eleetrophoresis(SDS-PAGE)and Westem blot were used to detect the expressed recombinant protein.Results Three recombinant plasmids were finally constructed. rYP01089,rPst and rYmt were expressed stably and effectively in E.coli thmngh optimizing the induction condition. The Western blot analysis indicated that rPst was capable of binding with positive sernm of phgue.The purity of rest was up to 95%in this stuay.Conclusions This work indicates that the genes of Yersinia pestis are able to be efficiently expressed in the prokaryotie protein expression system.The immune characteristic of rPst is sensitive and specific,80 this study has settled a foundation for developing a new type diagnostic reagent of plague.