Objective To investigate the imaging feature of hippocampal sclerosis (HS), and evaluate the diagnostic value of double inversion recovery (DIR) sequence at 3.0 T MR for its diagnosis. Methods Twelve patients with unilateral HS proven by pathology and 12 healthy volunteers were enrolled. All patients received DIR, fluid attenuated inversion recovery (FLAIR) and T2 TSE sequences scans on oblique coronal plane vertical to the hippocampal axis on a 3.0 T MR scanner. Regions of interest (ROI) were set respectively in ipsilateral and contralateral hippocampi hippocampi in patients with HS, and the bilateral hippocampi in healthy volunteneers were placed respectively. Signal to noise ratio (SNR), contrast to noise ratio (CNR), ratio of signal intensity (RSI) and asymmetry index (AI) of each ROI in all hippocampi were calculated and compared among the three sequences. Statistical analysis was performed with one-way ANOVA. Results On DIR images, ipsilateral hippocampal lesions demonstrated extremely high signal intensity. Relative signal intensity of ipsilateral hippocampal lesions, contralateral hippocampi and the hippocampi in control groups healthy volunteneers were 1.50±0.05, 1.26±0.03, 1.18±0.05 (F=172.609,P=0.000), respectively. SNR of ipsilateral hippocampal lesions on DIR, FLAIR and T2 TSE sequences were 84.13±16.62, 50.90±12.38, 63.25±15.46 (F=15.185,P=0.000), respectively. CNR of hippocampus were 13.72±3.73, 6.67±3.02, 7.33±3.65 (F=14.985,P=0.000), respectively.In HS patients, RSI and AI of the ipsilateral hippocampal lesions and contralateral hippocampi among the three sequences did not show statistically significant difference(P=0.078). Conclusions HS manifests extremely high signal intensity on DIR images. On DIR images, the SNR and CNR of HS were higher than those on conventional MR sequences which provide valuable information for the diagnosis of HS.

Objective To analyze the immunogenomic characteristics of antibody repertoire in re-sponse to influenza vaccine in order to provide a theoretical basis for further development of antibody. Meth-ods Based on a time-series immunoglobulin heavy chain ( IGH) repertoire sequencing dataset, we analyzed the immunogenomic characteristics of antibody repertoire in response to trivalent influenza vaccine ( TIV ) from three aspects which included the features in complementarity-determining region 3 ( CDR3 ) , antibody mutation and VDJ usage. Results The frequency of antibody mutation increased significantly upon vaccina-tion. Analysis of the CDR3 region indicated that polar and aromatic amino acids had a higher preference. The length of CDR3 region in naive B cells followed a normal distribution, while specific CDR3 sequences with 15 to 18 amino acids in length occupied a dominant position after vaccination. In addition, the VDJ us-age altered obviously and IGHV3-7-derived antibody had a significant response to the vaccine. Response in-tensity reached the peak on day 7 and gradually weakened over time. Conclusion Antibody repertoire evolves dynamically to express specific antibody upon vaccination and the characteristics of immune responses at sequence level could be used to evaluate their effectiveness.

Objective To establish a method of quality control for compound Cornu cervi degelatinatum tablets. Methods Thin layer chromatography ( TLC ) was used for qualitative identification of Lonicerae Japonicae Caulis and Pyrola Herba in the preparations. High performance liquid chromatography was used to determine the content of loganin and chiratin in Lonicerae Japonicae Caulis and monotropein in Pyrola Herba. Results The TLC spots were clear and specific in the qualitative identification.HPLC determined the content. In the concentration range, monotropein, loganin and chiratin had a good linear relationship with peak area (r>0.999).The mean recovery was 97.2%, 98.4% and 96.0%;RSD was 1.4%, 0.8% and 0.8%. Conclusion The present study employs TLC for quality control and HPLC for quantity control. The methods are simple and accurate, have good reproducibility, and can effectively control the quality of compound Cornu cervi degelatinatum tablets.

Objective:To investigate the expression of CD28 costimulatory molecule on human lymphocytes inhibited by siRNA.Methods:Three different siRNA (siRNA 1,siRNA 2,siRNA 3) were designed and synthysized and transfected into freshly isolated human lymphocytes with cationic liposome.At 24,48 and 72 h post transfection,the changes of CD28 expression were detected by flow cytometry,and the changes of CD28 mRNA levels were determined by semi quantitative RT PCR.Results:Different siRNA showed different reduction in CD28 expression.At 48 h post transfection,the degrees of reduction with siRNA 1,siRNA 2 and siRNA 3 were 22 10%?1 63%,73 50%?1 02% and 42 90%?0 89% respectively compared with the control ( P

Objective This study was to explore the expression and significance of HMA2 in bladder cancer , analyze its correlations to clinicopathologic and recurrence of bladder cancer. Methods The expression of HMGA2 protein in 148 specimens of bladder cancer and 30 specimens of normal bladder tissues was detected by immunohistochemtry, its correlations to clinicopathologic features was analyzed. Results There was no expression of HMGA2 protein in normal bladder tissues,while the expression level of HMGA2 protein was getting higher with the increase of tumor pathology grade and stage. The positive rate of HMGA2 protein was 21.3% in G1 bladder cancer, 60. 3% in G2 bladder cancer, 82.1% in G3 bladder cancer, its difference is significant (P＜0. 001). It was significantly lower in non-muscle invasive bladder cancer than in muscle invasive bladder cancer (43.3% vs 72. 7%, P=0. 003). The patients were followed up for 2～95 months, patients of recurrence was 64,HMGA2 protein expression was significantly higher in patients with recurrence than with non-recurrence (54.7% vs 25.0%, P=0. 007). Conclusions The expression of HMGA2 protein was highly in bladder cancer, the positive rate of HMGA2 protein expression was related with classification,TMN stage and recurrence, but not with sex, age, tumor number (P＞0. 05). The detection of the expression of HMGA2 protein is in favor of diagnosis and prognostic evaluation of bladder cancer.

Objective To explore prevention of cyclosporine A (CsA) combined with Cobalt protoporphyrin (CoPP) against murine graft versus-host disease (GVHD) after allogeneic hematopoietic stem cell transplantation (allo-HSCT).Methods C57BL/6 (H-2Kb) mice were used as donors and BALB/c (H-2Kd) mice as recipients,which were randomly divided into 4 groups.The mice in total body irradiation group (TBI group) were lethally irradiated and injected intravenously with PBS; The mice in Allo-HSCT group (BS group) were lethally irradiated and injected intravenously with bone marrow cells and spleen cells; The mice in CsA intervention group (CsA group) were injected with CsA intraperitoneally after allo-HSCT; The mice in CsA combine with CoPP intervention group (combination group) received both CsA and CoPP intraperitoneally after alloHSCT.Recipients were monitored for condition,survival rate and weight.The liver,small intestine and skin in the recipients were gained and pathological changes of GVHD were assessed.The kidney was stained with Masson staining dye to observe the tissue fibrosis.The expression levels of renal HO-1 mRNA in the recipients were detected.Results In contrast to BS and CsA groups,GVHD degree in combination group was mild,with less reduction and quick recovery of weight.On the day 30 after HSCT,survival rate in BS group was 36.8％,and that in combination group and CsA group was 69.6％ and 53.5％ respectively (P＜0.05).In comparison with BS and CsA groups,pathological changes in combination group were mild,cellular edema and degeneration degree of the liver,small intestine and skin were slight,and few necrosis and infiltrated inflammatory cells were observed.Tubulointerstitial fibrosis hardly occurred in combination group,but it occurred in CsA group abundantly.As compared with BS group,the expression levels of HO-1 mRNA was increased in combination group,while decreased in CsA group (P＜0.05).Conclusion CsA combined with CoPP enhanced the protective effect of CsA against GVHD,moreover,CoPP could alleviate the side effects of CsA,which might be related with up-regulation of the expression levels of HO-1.

Objective:To construct GST-tagged human NRP-1 fusion protein expression vector and induce its expression in Escherichia coli ( E.coli) ,then carry on inclusion body refolding and purification so as to obtain GST-NRP-1 fusion protein.Methods:NRP-1 gene was amplified by RT-PCR and inserted into pCR-blunt vector.Then the reconstructed plasmid was inserted into prokaryotic expression vector pGEX-4T-1.The constructed pGEX-4T-1-NRP-1 expression vector was transformed into BL21 cells and induced by i-sopropyl-β-D-thiogalactoside ( IPTG).Bacterial bodies were disrupted by sonication.Then the soluble fraction of fusion proteins were verified by Western blot and purified by Glutathione Sepharose 4B after inclusion body refolding.Results: The NRP-1 gene fragment was amplified by RT-PCR and inserted into pCR-blunt vector.Fusion protein expression vector pGEX-4T-1-NRP-1 was constructed suc-cessfully.After transformation, GST-NRP-1 expression vector was detected in BL21 cells and obtained purifying protein after refolding.Conclusion:The plasmid GST-NRP-1 was constructed successfully and laid basis for subsequent studies.

Objective To analyze the outcome and prognosis-related factors of MA (mitoxantrone+cytarabine) regimen for acute myeloid leukemia(AML). Methods 102 untreated AML patients were treated with MA. All patients were divided into two groups according to age, blood white cell count(WBC), FrenchAmerican-British (FAB) morphology, level of lactate dehydrogenase (LDH) and immunophynotype respectively.Analyze the prognosis-related factors. Results The complete remission (CR), partial remission (PR), nonresponse (NR) rate, and remission rate (CR+PR) of all the 102 cases were 63.73 % (65/102), 17.65 % (18/102), 18.62 % (419/102)and 81.38 % (83/102) respectively. The patients younger than 60 years old, WBC＜100×109/L, LDH≤600 U/L, FAB-M2 morphology group had higher CR and remission rate. The CR rate of patients with CD7 positive had statistical difference from that of patients with CD7 negative (P ＜0.05), but the remission rate not. However, the CR and remission rate of patients with CD19 positive had no statistical difference from that of patients with CD19 negative (P ＞0.05). Conclusion These results suggest that use of MA regimen was effective and safe for AML. Age, WBC, FAB morphology, level of LDH and CD7 expression are prognosis-related factors for clinical outcome.

We studied the regulatory effects of the estragen receptorbeta (ERbeta) gene on the downstream estrogen signal transfection pathway in colon cancer cells and the possible mechanisms involved. A human ERbeta gene recombinant expression plasmid, pEGFP-C1-ERbeta, was constructed and transfected into the Caco-2 colon cancer cell line, a line with low ERbeta gene expression. The expression of ERbeta mRNA and protein was detected 72 h after transfection. RT-PCR was used to examine the expression levels of the progesterone recepror (PR) gene containing the classic estrogen response element (ERE), the C-fos oncogene containing the AP-1 site (a non-classical ER binding site), the epigenetic modifying genes, such as Dnmt1, Dnmt3a, Dnmt3b, and histone methyltransferase (HMT), and the human mismatch repair gene hMLH1. Methylation-specific PCR was used to detect the changes in the methylated sites of the CpG islands in the promoters of the ERbeta, PR, and C-fos genes. The results indicated that the human ERbeta gene recombinant expression plasmid pEGFP-C1-ERbeta was successfully constructed and transfected into Caco-2 cells. As compared with the control group, the mRNA and protein expression of ERbeta gene was increased significantly 72 h after the transfection of pEGFP-C1-ERbeta into the Caco-2 cells. As compared with the control group, the mRNA expression of the PR, C-fos, Dnmt3a and Dnmt3b genes was increased significantly 72 h after the transfection of pEGFP-C1-ERbeta into the Caco-2 cells, but the mRNA expression of the Dnmt1, HMT, and hMLH1 genes decreased significantly (P<0.05). As compared with the control group, different degrees of demethylation occurred in the promoters of the ERbeta, progesterone receptor (PR), and C-fos oncogene 72 h after the transfection of pEGFP-C1-ERbeta into the Caco-2 cells. The methylation index of the estrogen signal transfection pathway in Caco-2 cells was decreased significantly following the expression restoration of ERbeta gene (P<0.05). It is concluded that the restoration or up-regulation of the ERbeta gene in Caco-2 cells may significantly activate the expression of the related target genes in the downstream estrogen signal transfection pathway and may result in the demethylation changes of the pathway. During the process, the expression level and activity of the epigenetic modifying genes and the human mismatch repair gene have changed simultaneously. The regulatory effect of the ERbeta gene on the estrogen signal transfection pathway to a certain extent partly involves demethylation.

Within the framework of translator's subjectivity,this paper explores professor Fang-Tingyu's philosophy in translating traditional Chinese medicine terms by taking four medical terms (miaoqiao,rouci,hexifeng,qihengli) as examples and referring to previously published interviews.The terms were chosen from his book New Chinese-English Dictionary of Traditional Chinese Medicine (Second Edition).We summarized his translation philosophy as follows:to put the purpose of translation first;to trace the source and understand the source text correctly;to apply translation strategies and methods in a flexible manner;to take readers's expectations into account;to keep abreast of the progress in traditional Chinese medicine translation studies.It is conducive that traditional Chinese medicine translator's translation philosophy is from the perspective of translator's subjectivity to grasping the nature of translation and may shed light on both translation practices and studies of traditional Chinese medical texts.