Humans ; Occupational Health ; Protective Devices

Objective Rat glial cell derived neurotrophic factor(GDNF) gene and tyrosine hydroxylase(TH) gene were widely used in gene therapy of Parkinson's Disease(PD).The present study was designed to investigate whether the two target genes GDNF and TH could express simultaneously in one adeno-associated virus(AAV)vector and to discuss the probability of using it in gene therapy of PD.Methods RNA of GDNF and TH in HEK293 packaging cells were examined by reverse transcription-polymerase chain reaction(RT-PCR).Expressions of GDNF and TH in infected bone marrow stromal cells(BMSCs) and rat brain coronal sections were examined with immunocytochemistry and immunohistochemistry assay.Results RNA of GDNF and TH were detected in HEK293 packaging cells.Expressions of this two genes were observed in both bone marrow stromal cells and brain sections of rats.Theexpression efficiency of AAV-LacZ was about 50% in HEK293 packaging cells and approximately 15% in infected BMSCs and the expressions of TH and GDNF on the AAV-GDNF/TH virus injected points both had significant differences(P

Objective To investigate the ECG atypical changes in acute myocardial infarction(AMI). Meth-ods 352 patients with AMI were selected sequentially and examined by electrocardiogram(ECG) ,Holter of 24h,my-ocardial enzymes testing and coronary angiography, and electrocardio-monitoring was performed at the same time. Data were analyzed by statistics. Results The incidence of ECG atypical changes in patients with AMI was 14. 5%. The ECG atypical changes including Q wavelet with the elevation value of ST segment, the delays of Q wave and the only changes of ST-T. Conclusion The above several kind of ECG performane are present in atypical AMI.

Objective To optimize the processing conditions of Manchuiran Dutchmanspipe Stem with alkali. Methods The combination of radial basis function ( RBF) and response surface methodology ( RSM) was used to investigate the influence of NaHCO3 , concentration, duration and cycles of processing on the content of aristolochic acid. Results The optimal process was achieved when Manchuiran Dutchmanspipe Stem was soaked for 3 cycles in 0. 05 mol·L-1 NaHCO3 solution, for 24 hours in each cycle. The removal rate of total aristolochic acid approached to 83. 74%. Conclusion The combination of RBF and RSM provided a new method and good guidance for further toxicity attenuation for Manchuiran Dutchmanspipe Stem.

Objective To study the expression of glycosylphosphatidylinositol(GPI) anchored protein in lymphocyte subsets of healthy individuals. Methods Flow cytometry and two/three color McAbs were used to detect CD59 expression in granulocytes, lymphocytes and subsets. Results In 50 samples, granulocytes mainly showed a single population of cells strongly positive for CD59, the percentage of CD59 expression was (98.6?1 5)%. Lymphocytes had a small population of weakly positive and negative for CD59, positive cells being (90 0? 14.9)%. CD3 +T cells had a similar profile as that of total lymphocytes, but there were more weakly positive /negative cells and less strong positive cells. As compared with CD3 +T cells, CD4 +T cells had a larger population of strongly positive for CD59, positive cells being (92.9?8.1)%; while CD8 +T cells had a smaller population of strongly positive, positive cells being (74.6?9.1)%. CD59 expression of activated T cells was between that of CD3 +and CD8 +T cells. CD45RA +and CD45RO +T cells both had a similar profile like that of CD3 +T cells. CD20 +B cells showed a similar profile to that of granulocytes, positive cells being (96.3?0 6)%. Conclusions Population of low or negative expression of CD59 among the lymphocytes of healthy controls was related to T cells, especially CD8 +T cells. B cells had uniform positive expression of CD59, and could be a candidate for detecting PNH.

0.05). The median duration of survival was 11.5 months for TEP gr oup versus 8.5 months for EP group (P0.05,no statistical difference). The main toxicity wa s myelosuppression for the two groups.The incidence rate of Ⅲ～Ⅳ degree neutro p enia and thrombocytopenia was higher in the TEP group than that in the EP group( P

0.05).The annual incidence of haemorrahagia was 0.49% in the low intensity group compared with 3.74% in the standard intensity group,and there was significant difference (P

Action Potentials ; drug effects ; Animals ; Mice ; Mice, Inbred Strains ; Neurons ; drug effects ; physiology ; Plant Extracts ; pharmacology

Objective To systematically review the relationship between mycoplasma infection and rheumatoid arthritis (RA).Methods Articles on case-control studies about the relation between mycoplasma infection and RA were collected by literature searching according to the selection criteria.Meta-analyses were performed for the included studies using RevMan 4.3.2 software.The odds ratio (OR) and its corresponding 95％ confidence interval (95％CI) were calculated by Meta-analysis.Results Seventeen casecontrol studies involving 729 RA patients and 1191non-RA controls,such as osteoarthritis (OA),reactive arthritis (ReA),gouty arthritis (GA),healthy controls were included.The results of Meta-analyses showed that there was a significant difference in the infection ratio of mycoplasma between patients with RA and non-RA (OR=4.40,95％CI 2.26 to 8.56,P＜0.01),and sensitivity analysis according to different published date and detection methods showed no difference.There were also significant differences between RA patients and OA patients (OR=11.29,95％CI 5.55 to 22.97,P＜0.01) and healthy controls (OR=6.80,95％CI 3.96 to 11.67,P＜0.01).Conclusion Mycoplasma infection is associated with RA.More evidence are needed to prove whether mycoplasma has played an equal role in RA and ReA,as well as the significant difference of mycoplasma infection between RA and GA groups.