Objective:To observe the expression of BTLA on T cells during activation and further analyze its inhibitory effects on T cell activation in different phases.Methods: T cells from PBMC were enriched by negative selection using magnetic beads.Expression of BTLA,CTLA-4 and PD-1 on freshly isolated human T cells and kinetics expression of BTLA,CILA-4 and PD-1 on CD3 mAb stimulated T cells were examined by flow cytometry.T cells were stimulated by anti-CD3 mAb combined with anti-CD28 mAb in the presence of anti-BTLA mAb 8H9,then T cell proliferation was tested by MTT assay in the different culture time.Immature DCs were generated from monocytes cultured in the medium containing GM-CSF and IL-4, and further driven to maturation by anti-CD40 mAb.Expression of HVEM on DCs was measured by flow cytometry.T cells were co-cultured with DCs in the presence of soluble 8H9 or anti-HVEM antibody to block HVEM-BTLA interaction,T cell proliferation was measured by MTT assay.Results:Freshly isolated T cells exhibited high levels of BTLA expression, but not CTLA-4 and PD-1.After T cell activation, BTLA expression decreased on first 2 days, with rapidly increasing to high levels.Unlike BTLA, expression of CTLA-4 and PD-1 was gradually increased during T cell activation.8H9 significantly inhibited the proliferation of T cell stimulated by CD3 mAb and CD28 mAb.8H9 could still exhibit inhibitory effect on T cell proliferation after 24 h or 48 h of preactivation by CD3 mAb plus CD28 mAb stimulation.HVEM was highly expressed on immature DCs, and down-regulated on mature DCs.Blockade of BTLA by soluble 8H9 or anti-HVEM antibody enhanced DC-mediated T cell proliferation within 48 h.Conclusion: BTLA signal enhances the threshold of T cell activation and plays importantly negative regulatory role in the initiation and early phase of T cell activation.

Objective To investigate the changes of stress response on inhalation-intravenous general anesthesia during pericystectomy for Liver hydatid cyst. Methods Thirty ASA I-II patients with liver hydatidosis for pericystectomy were studied. The blood from right jugular vein were collected for measurement of serum cortisol (Cor) concentrations and glucose (BG) levels, and MAP, HR and BIS were observed and recorded at different point-times: pre-intubation for 1 min, post-intubation for 3 min, pre-incision for 1 min, post-incision for 3 min, post-incision for 10 min, post-surgical exploration 10 min. The data of pre-intubation and pre-incision served as controls. Results The levels of Cor concentration of post-incision for 10 min were decreased than those of pre-intubation and pre-incision (P<0.05); MAP of post-incision for 10 min and post-surgical exploration for 10 min were increased than those of pre-intubation and pre-incision (P < 0.01); For HR, the data of post-surgical exploration 10 min was much quicker compared with pre-incision (P < 0.01), which is slower than that of pre-intubation(P<0.01). Conclusion Inhalation-intravenous general anesthesia may inhibit the stress response during intubation,incision and surgical exploration for liver hydatidosis pericystectomy. Hemodynamic changes during incision may reflect the trend of stress response in advance.

Purpose:To evaluate the efficacy and toxicity of vindercine(VDS)in the interven- tional treatment of hepatic and pulmonary carcinomas.Materials and Methods:30 cases of mid-ad- vanced hepatic and pulmonary carcinomas,among them,13 eases of primary hepatic carcinomas,7 cases of matastic hepatic carinomas and 10 cases of primary pulmonary carcinomas,were treated by selective arterial infusion chemotherapy.The combination chemotherapeutic regimens conpored of VDS together with 5-Fu,MMC,carboplatin or Vp16.Results:The response rate for all cases was 60%,for primary hepatic carcinomas 61.5%,for metastic hepatic carcinoma 42.9% and for primary pulmonary carcinoma 70%.Myelosuppession was the main toxicity and 70% patients had the gastrointertional reac- tions as nusea,vomiting etc.Conclusion:VSD is a more effective drug for pulmonary carcinoma,but for hepatic carcinoma,the efficacy of VDS was unmarkable from other drugs.

Objective To investigate etiologies,treatment approaches and prophylaxis for delayed thoracostomach emptying in esophageal or gastric cardiac cancer patients treated with esophagogastrostomy.Methods We performed a retrospective review of the clinical data of 24 patients suffering delayed thoracostomach emptying among 1985 post-surgical patients with esophageal or gastric cardiac cancer from January 2000 to June 2011.Results Eighteen patients in the 24 patients were cured by conservative managements including endoscopic dilatation procedures.The remaining 6 patients were treated with surgery.Conclusion The main etiology of delayed thoracostomach emptying is gastroparesis,which can be treated with nonsurgical conservative approaches; whereas mechanical emptying disturbance requires surgery.Endoscopic examination appears to be the most important diagnostic approach in identifying and differentiating the etiologies of delayed thoracostomach emptying in post-surgical patients.Endoscopic dilatation procedure is proved to be effective for the treatment of delayed thoracostomach emptying in post-surgical patients in this study.

Objective To evaluate DOG1 as an immunohistochemical marker for GIST.Methods From Jan 1987 to Sep 2008,210 consecutive cases including 137 GISTs as well as 73 non-GIST sarcoma were evaluated for clinicopathological characteristics and immunostained for DOG1 antibodies.Result Immunoreactivity for DOG1 was detected in 110 of 137 GIST cases (80.3%),3 out of 11 CD117negative GISTs were DOG1-positive.Only 1 of 73 non-GIST case was positive for DOG1.The expression of DOG1 in GIST is associated with the location of tumor,cell density,nuclear pleomorphism and Fletcher grading criteria.The postoperative 1-,3-,5-year overall survival for DOG1 negative and positive patients was 81.3%,74.5%,74.5% and 98.5%,85.9%,83.2%,respectively,P = 0.034.Conclusion DOG1 was a sensitive and specific marker for GIST in gastrointestinal mesenchymal tumors (GIMT).

OBJECTIVE:To establish the quality standard for Qindan granules. METHODS: The constituents including Radix Scutellariae, Radix Astragali, Cortex Moutan and Fructus Gardeniae in Qindan granules were identified respectively by TLC. RESULTS: The test samples and their respective reference substances were alike in that the same color chromatographic spots were noted at the corresponding places. The color spectra of the samples were clear yet without interference of surrounding impurity. CONCLUSION: The established method has high specificity and can be used for the quality control of Qindan granule.

Objective To evaluate KISS1 expression, and its significance in the prognosis of GIST patients. Methods In this study, 137 GIST cases and 73 non-GIST sarcoma cases were evaluated for clinicopathological characteristics and immunohistochemistry for KISS1 antibodies. Result The expression rate of KISS1 was 40.9% (56/137) in GISTs,which was significantly correlated with tumor size, disease extent, cellularity, presence of pseudocapaule, Fletcher's risk stratification and metastatic status after resection (P＜0.05). Patients with positive KISS1 expression had significantly worse disease free survival and disease specific survival (P ＜ 0.05 ). Conclusions KISS1 expression was associated with some clinicopathological characteristics as well as malignant behaviors in patients with GISTs. KISS1 might be a predictor in prognosis for GIST patients.

Aim To investigate the protective effect of gross saponin tribulus terrestris(GSTT) on the apoptosis of PC12 cells was induced by H2O2 and its mechanism.Methods Apoptosis of PC12 cells was induced by H2O2 at the concentration of 300 ?mol?L-1.The cell activity was determined by MTT.Cells were observed by inverted phase contrast microscope.Hochest33258 staining was detected by fluorescence microscope.The subdiploid peaks showing cell apoptosis rate was detected by flow cytometry.Protein of Bcl-2 and Bax was detected by Western blot.Results Compared with model group,the survival rate of PC12 cells increased (P

Objective To investigate the protective effect of gross saponin tribulus terrestris(GSTT) on the apoptosis of pheochromocytoma cells(PC12 cells)induced by H2O2 and its mechanisms.Methods PC12 cells were divided into control,model,high dose GSTT(GSTT1) and low dose GSTT(GSTT2) groups.Apoptosis of PC12 cells was induced by H2O2 at the concentration of 300? mmol?L-1.The cell activity was determined by MTT.The subdiploid peaks showing cell apoptosis rate and ?m were detected by flow cytometry.Proteins of Bcl-2 and Bax were detected by immunohistochemistry.Results Compared with model group,the survival rate of PC12 increased(P

Objective To evaluate the feasibility of the demonstration for morphologic characteristics of pulmonary vein(PV)and left atrium(LA)with 64-multislice computed tomography(MSCT).Methods Between February 2006 and February 2007,we studied morphologic characteristics of the pulmonary vein and left atrium in 88 patients undergone 3D imaging and virtual endoscopy with 64-slice MSCT scanner.46 patients in atrial frillation(AF)group and 42 subjects without history of AF in control group.Results 1.64-slice MSCT can reconstruct properly the morphology,number,size of orifice and flow route of pulmonary veins;among them,the sizes of orifice of pulmonary veins in AF group and control group showed no significant difference.2.The reconstruction images of left atrial appendages(LAA)showed that there were two kinds of morphologic variation existing at the crista between left auricle and left superior pulmonary vein with the continuatum of the left superior and inferior pulmonary veins.3.The reconstruction images,also revealed 3 types of left atrial top;including convex type(9%),concave type(32.9)and plateau type(58.1%);with approximately 12.5% of local convexity.Conclusion Clear demonstration of pulmonary vein and left atrium through 3D reconstruction of MSCT provides higher successful rate of RFCA for AF with simultaneous decrease of complications