Objective: To detect the expression and distribution of activated cytotoxic cells in types of lymphoma with tissue microarray,and provide evidences for clinical treatment and prognosis. Methods: Immunohistochemical staining by S-P technique was used for detecting the expression and distribution of perforin and granzyme B in lymphoma tissue microarray,composed of 60 samples of lymphoma tissue.10 NK/T-cell lymphoma routine sections were used for relative research,and 10 reactive hyperplasia were used for comparison. Results: In the tissue microarray,samples originated from intranode and extranode were 48 and 12,respectively;consisting of 42 B-cell lymphoma,16 T-cell lymphoma(10 PTCLs,2 NK/T-cell lymphomas,2 lymphoblastic T-cell lymphomas,2 anaplastic large cell lymphomas),2 Hodgkin's disease.42 samples of B-cell lymphoma cells were negative in perforin and granzyme B.In 10 samples of peripheral T-cell lymphoma,perforin and granzyme B positive were 8 and 9,respectively,but the positive cells were no tumor cells.In 12 samples of NK/Tcell lymphoma(2 in the tissue microarray,10 routine sections),both perforin and granzyme B were strongly positive.B-cell lymphoma,T-cell lymphoma and NK/T-cell lymphoma differed significantly(P

The results of the current studies demonstrated that the combined use of IL - 2 and IL - 7 could augment the in vitro proliferative responses of tumor - specific T cell lines and clones to antigen stimulation, increasing stimulation induces 6 to 8 times greater than using either IL - 2 or IL - 7 alone. Antigen - driven T cells maintained in culture using this combined cytokine regimen can be induced to grow and maintained functional in large numbers and survive long-term in cultrue with each antigen restimulation cycle prolonged to six weeks. The IL-2 doses used in this combined cytokine regimen can be reduced 10 to 100 times that of cultures using IL-2 alone. Thus, the combined use of IL-2 plus IL-7 is effective for procuring large numbers of antigen - specific functional T cells in vitro.

Objective To evaluate the prognosis capacity of the Primary Angioplasty in Myocardial Infarction (PAMI) risk score for 6 months mortality in the clinical patients with ST segment elevation myocardial infarction treated with primary percutaneous coronary intervention (PCI), in addition to asses the incremental value of EF and multivessel disease for risk stratification. Methods Six clinical variables and their relative value of score derived from PAMI risk scoring system were used to determine individual's risk score. The patients with STEMI were evaluated during the in-hospital period and followed-up for a mean of (10.34?3.24) months for mortality. The p values were calculated using a Kruskal-Wallis H test for categorical variables when appropriate; otherwise Independent-samples test was used. Logistic regression examined the discriminant accuracy of the PAMI risk score to predict death and assessed the incremental value of the EF and multivessel disease. Results A 88.8% of patients (183 patients) finished the follow up of 6 months. The overall in-hospital mortality rate was 4.4%, 30-day mortality rate was 6% and 6 months mortality rate was 9.3%. Eighty-eight patients scored 0-2 points, 54 patients scored 3-5 points, 17 patients scored 6-8 points and 24 patients scored ≥9 points. The 6 months mortality were 1.1%,3.7%, 17.6% and 41.7% respectively. Logistic regression analysis indicated that multivessel disease is a risk factor (OR 10.189) and EF is a protected factor (OR 0.849) for 6 months mortality after PCI. Multivessel disease and EF provided incremental information over that provided by the PAMI risk score. Conclusion The PAMI risk score can be applied in early stage after PCI for mortality risk assessment for patients with STEMI. EF and multivessel disease also convey important prognostic information and should be included in risk stratification after STEMI.

Objective To study whether miR-15a and miR-16-1 can enhance the sensitivity of Raji cells to cytarabine (Ara-C). Methods MiR-15a and miR-16-1 oligonucleotides were transfected into Raji cells with Lipofectamine™ 2000, and then the cells were treated with Ara-C. The IC50 values of Ara-C was detected by CCK8 assay. The growth of Raji cells was measured by trypan blue dye exclusion method. The apoptotic cells were observed by Hoechst dyeing; AnnexinV/PI double dyeing and glow cytometry(FCM) were used to examine the cell apoptotic rate. Results After transfection of miR-15a or miR-16-1 into Raji cells, the IC50 values of Ara-C were 10. 41 and 10. 86, respectively, which were significantly lower than that of the untransfected group(15.43)and scrambled oligonucleotides (SODN)transfection group(14. 92, P<0.05). Trypan blue dye exclusion assay showed that miR-15a/miR-16-1 transfection group had obviously decreased the cell growth compared to miR-15a, miR-16-1 group, untransfected group and SODN transfected group; Hoechst dyeing demonstrated plenty of apoptotic cells. AnnexinV/PI double dyeing assays by FCM indicated that the cell apoptotic rates in earlier period and late period were 20. 93% and 25. 27% in the miR-15a+Ara-C group, and 20. 69% and 23. 13% in the miR-16-1 + Ara-C group, which were obviously higher than those in miR-15a group (6. 99%, 10. 08%), miR-16-1 group(4. 73%, 10. 64%), Ara-C group (10. 88%, 11. 83%) and control group (14. 39%, 11. 93%). Conclusion MiR-15a and miR-16-1 oligonucleotides can enhance the sensitivity of Raji cells to Ara-C.

Islet transplantation is one of the effective methods for diabetic therapy. Insulin-producing cells oriently differentiated from embryonic stem cells provide enough cell sources for islet transplantation. The article reviews the progress of recent research on differentiation of embryonic stem cells into insulin-producing cells.

Aim To investigate effects of Cx26 on pro-liferation,apoptosis,migration of human highly meta-static hepatocellular carcinoma HCCLM3 cells.Meth-ods The HCCLM3 cells were infected with lentiviral vector targeting interference of Cx26 and the stable transfectants were selected by puromycin.The interfer-ence efficiency of Cx26 was detected by Real-time PCR and Western blot.Gap junction function was assessed by “parachute”dye-coupling assay. The effects of Cx26 interference on proliferation,apoptosis,migra-tion of HCCLM3 cells were determined by MTT assay, flow cytometry,transwell migration assay,respective-ly.Results The mRNA and protein expression of Cx26 in LV-Cx26 group was significantly lower than the LV-NC group and wide group (P<0.01),and GJ function in LV-Cx26 group also significantly reduced compared with LV-NC group and wild group (P <0.01 ).The Cx26 interference significantly inhibited the proliferation (P<0.01)),promoted the apoptosis (P <0.01 ),and decreased migration of HCCLM3 cells in vitro (P <0.01 ).Conclusion Lentiviral vector targeting interference Cx26 expression of HC-CLM3 cells can significantly reduce its GJ function,in-hibit the proliferation and migration,promote apopto-sis,and reduce its malignant properties.

Objective To discuss the early recognition and treatment of group B streptococcus (GBS) infection caused neonatal meningitis and subdural effusion. Method The onset, clinical manifestations, diagnosis and treatment process were retrospectively analyzed in one case of typical GBS infection caused neonatal meningitis and subdural effusion. Results The subject was late-onset GBS infection, with insidious onset, rapid progress, slow clinical recovery, and highly sensitive to vancomycin. During the treatment, the subject had relapses. The subdural effusion had been found. After extension of vancomycin treatment, the subject recovered. Conclusions The late onset GBS infection should be taken seriously in clinical, pay attention to the complications such as purulent meningitis, subdural effusion, hydrocephalus, and be early treated with adequate and effective antibiotics.

Objective To optimize the extraction process of Ardisia crenata based on the content of total saponins and to provide a basis for the Ardisia crenata study. Methods Based on the results of the single-factor tests and the Box-Behnken central composite experimental design principles, a response surface methodology which has three factors and three levels was designed to optimize the extraction process of Ardisia crenata based on the content of saponins. Results A maximal extraction yield of total saponins reached 2. 29% under the optimal conditions as follows:70% alcohol was used as extraction solvent with the material to liquid ratio of 116, the extraction time was 3 h at 70 ℃. Conclusion The optimized extraction process is accurate, reliable and practically valuable.

The aetiology of inflammatory bowel diseases(IBD) is still unknown at the present time.However,along with more and more experimental models of IBD developed in recent ten years,the therapeutic effect of probiotics on IBD and the possible mechanisms were widely explored.A lot of experiments have shown that probiotics administration can significantly ameliorate the IBD in many kinds of animal models and this beneficial effect of probiotics may be associated with inhibiting microbial growth,enhancing gut-barrier function,modulating immune response of intestinal mucosa and decomposing luminal pathogenic antigens.

Objective To construct an eukaryotic expression vector of pre-miR-15a,and to investigate the inhibitory effect of pre-miR-15a to Raji cells. Methods The pGCSIL-GFP vector encoding pre-miR-15a nucleotides was transfected into the bacterial competent cells,and then confirmed by PCR and sequencing analysis. The identified vector was transfected into Raji cells with oligofectamine 2000. The cells were divided into 3 groups,blank,negative control and pre-miR-15a group. Semi-quantitative RT-PCR was used to detect the expression of Bcl-2 mRNA,and immunofluorescence indirect for Bcl-2 protein expression. The growth of Raji cells was assayed by trypan blue dye exclusion method. Results PCR and sequences analysis indicated that the recombinant clones was identical with target sequences. Many green fluorescent cells were observed under fluorescent microscopy. The levels of Bcl-2 mRNA at every group had no obviously difference. Bcl-2 protein expression was obviously decreased at pre-miR-15a group compared with the other groups. Trypan blue dye exclusion method showed the cell growth was inhibited at 48 h and 72 h post-transfection. Conclusion We successfully construct the eukaryotic expression vector of pre-miR-15a,and it can inhibit the growth of Raji cells.