Interleukin-6(IL-6)is associated with cancer staging, survival, apoptosis and the sensitivity to chemotherapeutic drugs, and it is overexpressed in the cancer tissue and serum of cancer patient.IL-6 Can regulate proliferation and differentiation of cancer cells through IL-6/STAT3 signaling pathway. Therefore, blocking IL-6/STAT3 signaling pathway has potential therapeutic implications for cancer.

The aim of the study was to analyze the impact of stress on gastric mucosal hydrophobicity and the dontent of phospholipid in gastric glandular adherent mucus gel layer in rat. Forty rats were randomly divided into four groups, which were control group, 0.5, 1 and 2 h after water immersion restraint stress groups. The gastric mucosal contact angle and the content of phospholipid in mucosal surface scraping material (SSM) of glandualar stomach and gastric mucosal ulcer index were measured. The gastric mucosal contact angle in each group was (38.0?2.4)?、(26 8?1 8)?、(20 0?1 4)? and (14 4?3 3)? respectively. The content of phospholipid in SSM per gram of glandular stomach in each group were (46 76?4 73)、(32 49?9 45)、(25 51?5 78)、(18 14?7 91)、(36 76?4 73)?g respectively and the ulcer index was 0、2.8?1.0、6.0?1.6 and 11.4?3.1 respectively. The three parameters showed significant changes in stress conditions as compared with those in normal control ( P

To explore the significance of endothelin-1 converting enzyme (ECE-1)mRNA expression in the development and progression of stress ulcer in cold-restraint-stress(CRS) rats, a model was established by CRS-induced ulcers in rats. ET-1 contents in plasma and gastric mucosa of rats were measured by using radioimmunoassay(RIA)method, gastric mucosa blood flow(GMBF) in rats were determined by using laser-doppler flowmetry, ulcer index(UI) in rats was estimated according to"Guth standard", and the expression levels of ECE-1mRNA in gastric mucosa of normal and CRS rats were measured by using dot blot and reverse transcription-polymerase chain reaction(RT-PCR). The results indicated that compared with control values,the ET-1 contents in both plasma and gastric mucosa of CRS rats were increased significantly after stress (P

Objective:In the clinical mechanical ventilation practice, the medical workers often set the ventilator parameters only depend on their own experience. In order to change that,we design a Closed-Loop Automatic Mechanical Ventilation Controller.Methods: Design two closed-loop control subsystems to meet the requirements of closed-loop control system. PETCO2 control subsystem used to keep the concentration of PETCO2, and another subsystem design to regulate the respiratory elasticity called PEEP control subsystem. PETCO2 control subsystem can work on its own or work with PEEP control subsystem.Results: Using this closed-loop controller, the partial CO2 pressure and respiratory elasticity of patient was regulated in real time.Conclusion:By using this closed-loop automatic mechanical ventilation controller, the respiratory elasticity was largely reduced with the adequate gas exchange. Therefore, the ventilator using this closed-loop automatic mechanical ventilation controller can improve the ventilation quality and also reduce the risk of lung injury.

Objective To investigate the specific immune therapeutic effect of the T cell fusion peptide vaccine from group II allergens from Dermatophagoides pteronyssinus(Der p2). Methods Thirty mice were randomly divided into three groups, namely a negative control group(a PBS group),positive control group(an asthma group)and protein Der p2 T cell fusion epit?ope for specific immunotherapy(SIT)group(a Der p2 T group). The extract of house dust mites(HDM)was used to establish the asthmatic models in BALB/c mice,and the PBS group was always used with PBS buffer. Thirty minutes before spray inhala?tion from 25 to 27 days,the mice of the Der p2 T group were respectively injected subcutaneously with the therapeutic proteins for SIT,then the serum and bronchoalveolar lavage fluid(BALF)were collected. ELISA was used to assay the levels of IFN?γ, IL?4,and IL?13 in BALF,as well as serum levels of specific IgE and IgG2a. The lung tissue sections were stained with haematox?ylin and eosin(H&E)for pathological examinations. Results The ELISA detection revealed that the number of eosinophil in BALF of the asthmatic mice was(5.57 ± 0.64)× 105/ml,which was significantly higher than that in the PBS group[(0.50 ± 0.30)× 105/ml,P < 0.01],the number of eosinophil in the Der p2 T immunotherapy group decreased significantly[(3.45 ± 0.36)×105/ml,P<0.01]. The content of IFN?γin the PBS group,asthma group and Der p2 T group were(267.00 ± 21.98), (155.80 ± 20.53)pg/ml and(234.40 ± 24.46)pg/ml respectively. Compared with the asthma group,the mice with Der p2 T vac?cine specific immune treatment produced a high level of IFN?γ(P<0.01). The content of IL?4 in the PBS group,asthma group and Der p2 T group were(23.40 ± 5.96),(53.28 ± 8.26)pg/ml and(30.00 ± 5.50)pg/ml respectively. Compared with the asth?ma group,the content of IL?4 in the mice of the Der p2 T treatment group was significantly lower(P<0.01). Compared with the asthma group[(308.10 ± 28.32)pg/ml],the content of IL?13 in BALF of the mice in the Der p2 T treatment group was signifi?cantly decreased,which was[(174.50 ± 25.99)pg/ml,P<0.01]. The content of IL?13 in the PBS group was(95.99 ± 31.14) pg/ml. The lung tissue sections showed that the lung inflammation in the p2 T Der group was significantly less than that in the asthma group,and the inflammatory cell infiltration was significantly decreased,and airway epithelial construction remodeled. Conclusion The Der p2 T cell fusion epitope,which is as vaccines for specific immunotherapy with asthma models,can allevi?ate effectively allergic inflammation of airway and lung in the mice,and it may be used as a candidate vaccine for asthma.

Objective To study the effects of siltuximab on the interleukin-6 (IL-6)/signal transducer and activator of transcription 3 (Stat3) signaling pathway in ovarian epithelial carcinoma.Methods (1) Expressions of IL-6 in ovarian cancer patient specimens were assessed by immunohistochemistry.(2) Expression of phosphorylation Stat3 (pStat3) protein in siltuximab and IL-6 treated SKOV3 cell lines was determined by western blot, and expression levels of Stat3-induced bcl-XL,MCL-1, survivin, in siltuximab treated SKOV3/TR and CAOV3/TR cells lines were also determined by western blot.(3) Real-time image analysis was used to study the nuclear translocation of pEGFP-Stat3 fusion protein in ovarian cancer cell line SKOV3-pEGFP-Stat3 treated with siltuximab and IL-6.(4)Paclitaxel sensitivity in siltuximab treated SKOV3/TR and CAOV3/TR cell lines were assessed using the methyl thiazolyl tetrazolium (MTT).The 50% inhibiting concentration ( IC50 ) was defined as the paclitaxel concentration required to decrease the A490 value to 50%.Results ( 1 ) There were significantly difference in IL-6 staining density and the positive rate of IL-6 protein stained among the metastatic, and drug-resistant recurrent tumors,and matched primary tumors [69%(18/26)] vs.77% (20/26)vs.23% (6/26), P＜0.05].(2)A clear increase in Stat3 phosphorylation levels was observed in the IL-6-treated SKOV3 cell lines as compared to the SKOV3 cell lines.When the IL-6-treated SKOV3 cells were incubated with siltuximab with a range of concentrations of 0.001,0.01,0.1, 1.0 and 10 μg/ml, there were trends toward reduced pStat3 expression in the treated cell lines.Compared without treatment with siltuximab, the expression of the anti-apoptotic proteins MCL-1, bcl-XL and survivin in SKOV3/TR and CAOV3/TR cell lines were significantly decreased after treated with siltuximab.(3) In resting cells, the majority of pEGFPStat3 was cytoplasmic until the addition of human IL-6, which promptly induced the translocation of fluorescent Stat3 molecules to the nucleus.Exposure of cells to siltuximab with a range of concentrations of 0.001, 0.01,0.1, 1.0 and 10 μg/ml, followed by an incubation in IL-6 significantly reduced pEGFP-Stat3 nucleocytoplasmic translocation.(4) MTT cytotoxicity assay demonstrated that siltuximab increased paclitaxel-induced cell death and partially overcame paclitaxel resistance.Treated with siltuximab ( 1 and 10 μg/ml) ,the paclitaxel IC50 value of siltuximab in SKOV3/TR (0.49, 0.19 μg/ml) and CAOV3/TR (0.0010, 0.0008 μg/ml) cells were significantly lower than those in untreated cells (0.71,0.0021 μg/ml;all P ＜ 0.05).Conclusions These results demonstrated that siltuximab effectively block the IL-6 signaling pathways, which .Blockage of IL-6 signaling may provide benefits for the treatment of ovarian cancer.

ObjectiveTo evaluate the efficacy and safety of electrical acupuncture therapy through adhesive surface electrodes and concomitant auricular acupuncture therapy on acute spinal cord injury.MethodsA total of 56 acute spinal cord injury patients with American Spinal Injury Association(ASIA) impairment grading of A and B were recruited into this study.They were randomly divided into the acupuncture and control groups.In the acupuncture group,electrical acupuncture therapy via the adhesive surface electrodes and auricular acupuncture were applied.Rehabilitation therapy was also provided to the patients during acupuncture therapy.In the control group,only rehabilitation therapy was provided to the patients.The ASIA neurologic and functional scores and the Functional Independence Measure(FIM) scores were assessed during the time of admission,hospital discharge,and 1-year postinjury follow-up.There were no adverse events.ResultsThere were significant improvements in neurologic(sensory and motor),functional,and FIM scores in the acupuncture group compared with the control either when hospital discharged or 1-year postinjury follow-up.There was no adverse events.ConclusionThe early use of concomitant auricular and electrical acupuncture therapies are effective and safe in treating acute spinal cord injury.

Objective:To study the effect of endoscope on the treatment of Hepatocellular Carcinoma (HCC) combined with biliary tract obstrucition (BTO).Methods:We have analyzed retrospectively the results of twelve patients suffering from HCC combined with BTO from 5,1990 to 5,2000.Among these cases,various reasons were found.5 of them were intrabilitary cancer embolus,7 were billary calculus.7 of them were treated with endoscope and following surgical resection,1 was treated with endoscope、TAE and resection,the 3 rest of them were solely treated with endoscope.Results:Of all the 12 cases,1 died of resection,2 failed to follow the survey,these 3 cases above took 25%;among the rest of 9 cases,2 of them survived for 3 to 6 months,3 for half to 1 year,3 for 1 to 2 year,1 for at least 2 years.Those cases suviving for more than 1 year were received surgical resection.Conclusions:We should have no fixed way but to deal with each patient of HCC combined with BTO on his/her merits.As our recognition towards them began accumulating,we found that,in the early stage of obstruction,active endoscopic treatment would prove to be preferable.If combined with other therapy such as surgical resection and TAE,Endoscopy would improve the curative effect of HCC combined with BTO substantially.

To investigate the effects of osthole on chondrocyte proliferation in vitro.

Objective To study the behavioral changes of the spinal cord injury model to provide important data for neuroal factor therapy of the impaired spinal cord.Methods In SD rat,aged 8 weeks,(T7~T8 spinous processes as control),after the spinous process and corresponding lamina of vertebra were removed,the spinal cord was cut by using scissors to prepare the complete transversal abruptly spinal model.The behavioral score of the rat was recorded at different time.The evaluation was made in imageology and pathology.Results The score of SD rat in the experiment group was higher than the control group at different control time.The pathobiology and imageology alterations were very apparent in the damaged spinal area.Conclusion GAP-43 has neuroprotective effect on the recovery of spinal cord injury.