Objective To investigate the expression pattern of STIL in gastric cancer and effect of silencing STIL on biological behaviors of SGC-7901 cell line.Methods The expression of STIL at mRNA and protein level were detected by qPCR and Western Blot,respectively.SiRNA against STIL was constructed and transfected into SGC-7901 cell line.The effect of Si-STIL on cell proliferation,cloning ability,cycle distribution and apoptosis was detected by MTT,colony-forming assay and flow cytometry,respectively.Results STIL was aberrantly expressed in gastric cancer compared with that in paratumor tissues.Downregulation of STIL level,inhibition of proliferation and cloning ability,increasing apoptosis and blocked cell cycle at S phase were observed after SGC-7901 cell line was treated with Si-STIL.Conclusion STIL was overexpressed in gastric cancer.STIL gene silencing effectively inhibited cell growth,transition of metaphase and promoted apoptosis of SGC-7901 cell line.

20?10 9/L on day 16 (range 9~35).Over grade Ⅱ acute GVHD occurred in three patients(25%) and chronic GVHD occurred in five patients, including three patients with localized chronic GVHD and two with extensive chronic GVHD . The incidence of acute GVHD in allo-PBSCT is similar to allo-BMT, while care should be taken for the occurrence of chronic GVHD.

2 0), and also by RT PCR. The gene expression in metastasis group was 6 86?1 84, and it was higher than that in non metastasis group. The results suggested that the high expressions of neural cell adhesion molecule gene might be correlated with the pathogenesis of NHL.

To investigate the potential role of interleukin 12 (IL 12) in human acute graft versus host disease (aGVHD). 26 patients undergoing allogeneic hematopoietic stem cell transplantation (allo HSCT) were included in this study. IL 12 protein and gene expression in peripheral blood mononuclear cells were measured using enzyme linked immunosorbent assay (ELISA)and reverse transcription polymerase chain reaction (RT PCR), respectively. The results showed that all the patients achieved engraftment.Among them, 10 patients developed grade ⅠGVHD, 5 patients deveolped grade Ⅲ or Ⅳ GVHD. IL 12 protein and gene expressions in peripheral blood mononuclear cells were significantly higher in patients with aGVHD compared with those without aGVHD.The levels of IL 12 correlated significantly with the severity of aGVHD .The results suggested that IL 12 might play an important role in the development of human aGVHD.

Objective To evaluate the effects of mechanical stretch preconditioning on endotoxininduced damage to human type Ⅱ alveolar epithelial cells.Methods Human type Ⅱ alveolar epithelial cell line A549 ceils at the logarithmic growth phase were seeded in 96-well plates at a density of 0.5 × 106 cells/ml (2 ml/well).The cells were randomly divided into 3 groups:control group (group C,n =12);lipopolysaccharide (LPS) group (n =36) and 5％ CS + LPS group (n =48).The 5％ CS + LPS group was further divided into 4 subgroups,and A549 cells were exposed to 5％ cyclic stretch for 15,30,60 and 120 min in the 4 subgroups,respectively.LPS with the final concentration of 1 μg/ml was added after the end of mechanical stretch in the 4 subgroups,and A549 cells were incubated for 4 h.The apoptosis in cells was detected using flow cytometry and apoptosis rate was calculated.F-actin expression was determined using immunofluorescence.Results Compared with group C,the early and late apoptosis rates were significantly increased in LPS and 5％CS + LPS groups.Compared with the value at 4 h of LPS incubation in group LPS,the early and late apoptosis rates were significantly decreased,and the reconstruction of F-actin was reduced in 5％CS + LPS group.Conclusion Preconditioning with 5％ cyclic stretch (15-120 min) can mitigate endotoxin-induced damage to human type Ⅱ alveolar epithelial cells.

Objective:To study role of IL 10 in acute graft versus host disease(aGVHD)and graft rejection.Methods:20 patients undergoing allogeneic hematopoietic stem cell transplantation (allo HSCT),serum concentrations of IL 10 were measured by using enzymed linked immunosorbent assay(ELISA)during transplantation,IL 10 gene expression in peripheral mononuclear cells were measured by using reverse transcriptase polymerase chain reaction (RT PCR)after transplantation.Results:6 patients developed grade I GVHD.4 patients grade III IV GVHD,3 patients graft rejection. Before transplantation ,the concentrations of IL 10 with the patients who developed severe aGVHD or graft rejection were lower than those without aGVHD.After transplantation, the concentrations of IL 10 with the patients who developed severe aGVHD or graft rejection decreased,and those without aGVHD or graft rejection significantly increased. The result of RT PCR suggested that the expression of IL 10 mRNA decreased in the patients who developed aGVHD.Conclusion:IL 10 plays an important negative role in the development of aGVHD and graft rejection.

Objective To analyze the complications and short-term effects of laparoscopic surgery for achalasia.Methods The clinical data of 41 patients with achalasia who were treated by laparoscopic surgery were analyzed retrospectively.Results The 41 patients were no deaths.All patients underwent Heller cardiomyotomy and fundoplication,39 patients with Dor anterior fundoplication,2 patients had the presence of hiatal hernia with Toupet fundoplication.The mean surgical time was 142 min.Intraoperative complications occurred in 7 cases,including 6 cases of mild complications.The mean follow-up was 21 months.The clinical efficacy excellent in 27 cases,good in 7 cases,generally in 5 cases,poor in 2 cases.Conclusions Heller cardiomyotomy should be the treatment of choice in achalasia patients,because of its short and medium term outcomes,and its low morbidity.

Objective To observe the clinical effect of procedure for prolapse and hemorrhoids (PPH) in treating hemorrhoids.Methods 78 patients with symptomatic Ⅱ,Ⅲ and Ⅳ degree hemorrhoids undergoing PPH were selected in this study.The diagnosis,medical history,operative time,blood loss and perioperative complications were recorded.The World Health Organization Quality of Life Scale(WHOQOL-BREF) was observed preoperation and 6 hours,24 hours,1 month postoperation.Results The postoperative pain score measured by visual analogue scale (VAS) at postoperative six hours was (7.6 ± 2.1),which reduced to (1.3 ± 1.1) at 24 hours.There was significant improvement in the overall perception of QOL,health,and in physical and psychological domains (t =1.901,1.805,1.714,P =0.041,0.038,0.029,all P ＜ 0.05).There was modest improvement in environmental domain,while no change was found in social domain (P ＞ 0.05).Conclusion PPH surgery achieves good clinical results,improved quality of life of patients,with a low incidence of complications,patients with hemorrhoids should be recommended for this preferred surgical approach.

Objective: To express mSDF-1?/GM-CS fusion protein in the Pichia pastoris expression system and investigate its in vivo promoting effects on hematopoiesis function and immune function.Methods: The mSDF-1?/GM-CS fusion gene was chemically synthesized and was cloned into pichia expression vector;the vector was then transfected into Pichia pastoris expression system.Then the expressed products were detected by SDS-PAGE,Western blotting and purified by ion exchange columns.Rat irradiation model was established by 60Co ? ray and were subcutaneously injected with the fusion protein.The hematopoietic and chemotactic activities of the fusion protein were investigated in vivo.Results: The expression vector pPIC9K-SDF1-L-GM-CSF was successfully constructed,and mSDF-1?/GM-CS fusion protein was successfully expressed by Pichia pastoris strain GSl15.The molecular weight of the protein was about 32000 D,with a concentration of 78 ng/ml.The numbers of bone marrow mononuclear cells and GM-CFU were significantly increased in rats after subcutaneous injection of the fusion protein(P

Objective： To elucidate the role of bone marrow stromal cells in cooperation with exogenous cytokines in hematopoiesis. Methods： Fetal bone marrow stromal cells (FBMSC) was combined with cytokines including SCF,IL-3,IL-6,GM-CSF in a 5-day liquid culture system of adult bone marrow mononuclear cells, then we cultured bone marrow derived CD34+-enriched cells with FBMSC+SCF+IL-3+IL-6+G-CSF+EPO for 2 weeks. Results：FBMSC were in good cooperation with above mentioned exogenous cytokines. When CD34+-enriched cells from adult bone marrow were cultured with combinations of FBMSC, SCF, IL-3, IL-6, G-CSF and EPO, total nucleated cells, CFU-GM, BFU-E and CD34+ cells were increased by 119.6±30.9, 54.6±17.4, 25.2±4.4, 11.1±4.2 folds, respectively. Conclusion：FBMSC in cooperation with exogenous cytokines support the in vitro expansion of human hematopoietic progenitor cells efficiently.