0.05). Conclusions The LTs synthesis is elevated in RSV bronchiolitis and LTs may participate in the pathogenesis of RSV bronchiolitis. Leukotriene receptor antagonist may play an important role in RSV bronchiolitis. However there still needs further research on the relationship between LTs and eosinophils count in the pathogenesis of RSV bronchiolitis.

Objective To characterize clinical features,antimicrobial susceptibility and the outcome of nosocomial Acinetobacter baumannii meningitis.Methods All patients with nosocomial meningitis due to Acinetobacter baumannii in 2nd Affiliated Hospital Medical School of Zhejiang University between January 2010 and October 2011 were retrospectively reviewed.Results During the study period,40 patients of this nosocomial infection were identified,who came from neurosurgery ward (19 cases,47.5％),neurosurgieal intensive care unit (18 cases,45.0％),emergency intensive care unit (2 cases,5.0％) or intensive care unit (1 case,2.5％).All the patients had a history of recent neurosurgical procedures. Fever and disturbance of consciousness were the major manifestations,and cerebrospinal fluid examination showed elevated white blood ceil count and protein,and reduced glucose.All isolated pathogens were resistant to the first line antibiotics.The fatality rate was high. Conclusions The most common risk factor for nosocomial Acinetobacter baumannii meningitis is neurosurgery. Resistance to the first line antibiotics is common among all pathogens isolated.The prognosis of the meningitis is poor.

Objective: To develop an HPLC method for determination of Isocorydine in Jinshining Eye gelatin. Method: AgiLentTC-C18 chromatographi coLumn(4.6 min×150 mm,5 μm) was used,methanoL-0.2% phosphoric acid soLution (adjust the pH 7.0 take methyL aLcohoL)(54:46)as the mobiLe phase, the detection waveLength was 267 nm,flow rate at 1.0 mL· min-1. Result: The calibration curve of Isocorydine as linear between 0.123 0～1.107 0μg, The average reeovery and the relative standard deviation were 97.11% and 1.65%. Conclusions: The method is simple, accurate, repeatable. It can be used for quality control of JinshiLe Eye gelatin.

We established a sensitive method for the detection of lead ions in aqueous solution based on the surface energy transfer between gold nanoparticles and fluorescent dyes. The fluorescein-modified thrombin aptamer (5′-FAM-GGT TGG TGT GGT TGG-3′) can be selectively transformed to G-quadruplex induced by lead ions. The conformation changes of the aptamer can alter the distance between the energy donor of fluorescent dyes and the energy receptor of gold nanoparticles, and further enhance the fluorescence intensity. The fluorescence recovery efficiency ( F/F0 ) is proportional to the concentration of lead ions in the range of 12. 5-100 nmol/L following the linear regression equation of y=0. 910﹢0. 007c(R2=0. 997)and the limit of determination is about 10 nmol/L. The proposed method has been applied to the determination of lead ions in tap water with satisfied results.

AIM To investigate if scallop (Placopecta magellanicus) skirt glycosaminoglycan (SS-GAG) inhibits the proliferation of vascular smooth muscle cell (VSMC) as heparin does so and to clarify its mechanism. METHODS The inhibitory effects of SS-GAG on the proliferation of rat thoracic aorta and abdominal aorta VSMC induced by fetal bovine serum (FBS) or basic fibroblast growth factor (bFGF) were determined by cell counting, crystal violet staining and MTT colorimetry. The effects of SS-GAG on the expression of proliferating cell nuclear antigen (PCNA) and platelet-derived growth factor (PDGF) in VSMC proliferation induced by bFGF were evaluated by immunohistochemical technique (LSAB method) and computer image analysis system. RESULTSSS-GAG exerted antagonistic effects on VSMC proliferation induced by 20% FBS and 50 μg·L-1 bFGF at concentrations ranging from 50 mg·L-1 to 200 mg·L-1 and repressed the increasing expression of PCNA and PDGF. CONCLUSION SS-GAG significantly inhibits the proliferation of VSMC, which may be carried out through repression of PDGF and PCNA expression.

Objective　To evaluate the effect of inducing differenation of all trans retinoic acid (ATRA) on immunologic function of patients with gastric cancer. Methods　T-lymphocyte subsets(T-Ls) and interleukin-2 receptor(sIL-2R) of 56 patients with gastric cancer after treatment of ATRA were studied. Results　In radical gastric cancer resection group, the serum CD3,CD4 and CD4/CD8 rate were higher and sIL-2R were lower than those in the control group, after treatment of ATRA, CD3,CD4 and CD4/CD8 rate and sIL-2R were as high as those in the control group. In the non-operative or palliative gastric resection group, CD3,CD4 and CD4/CD8 rates were increased markedly and the serum sIL-2R was decreased significantly than those in the control group. Conclusion　ATRA inducing differenation can improve the immunity of the patients with gastric cancer.

Objective To observe the effect of self mading Tongfengxiao decoction in treatment of acute gouty arthritis. Methods 69 patients were randomly divided into two groups. In the control group,33 patients were given diclofenac sodium sustained-release capsules and allopurinol treatment;In treatment group ,36 patients were given to the self mading Tongfengxiao decoction in addition to the western medicine received by the control group. The two groups were all treated for 14 days. Results The total effective rate was 94.4% for treatment group and 87.8% for control group respectively. Therefore, the difference of treatment effect between twp groups was significant ( P ＜0. 05 ) ;Also, the treatment group performed better than control group in term of reducing serum uric acid( P ＜ 0. 05).Conclusion The treatment of Tongfengxiao decoction combined western medicine for acute gouty arthritis had a good synergistic effect, and could reduce serum uric acid and improve clinical symptoms.

In the tumor microenvironment, inflammatory cells regulate intracellular signaling transduction mediated by the corresponding nuclear transcription factor by releasing inflammatory factors ,which leads to transformation of epithelial cells to mesenchymalcellsand eventually promote tumor metastasis. Because of the intimate relationship between inflammation and tumor metastasis , it would be helpful for further enhancement of effectiveness of tumor therapy if we could better understand both the biological character of tumor and the related inflammatory factors.

Objective To explore the effect of gamma-aminobutyric acid (GABA) on the growth, apoptosis and telomerase activity of Cholangiocarcinoma cell line QBC939. Methods Cholangiocarcinoma cell line QBC939 was cultured by routine method, and then treated with different concentrations of GABA (1-1000 μmmol/L). The proliferation, apoptosis and cell cycle of QBC939 cells was investigated by MTT, Flow cytometry and transmission electron microscopy. The telomer-ase activity of QBC939 cells was examined by modified PCR-ELISA assay. Radioimmunoassay was used to measure the intracellular cyclic adenosine monophosphate(cAMP) content. Results The dif-ferent concentrations of GABA inhibited the growth of QBC939 cells and promoted the apoptosis. The apop-totic rate of QBC939 cells was increased from 4. 8% to 28. 03%, which had significant difference (P<0.05). It had no effect for distribution of cell cycle. Cell nuclear condensation and apoptotic bodies were seen by transmission electron microscopy. Telomerase activity was inhibited by GABA(0. 82±0. 048 vs 0.56±0. 054, P<0.05). The content of intracellular cAMP was increased with the increase of GABA concentration in a dose-dependent manner [(0. 59±0. 049) nmol/L vs (0. 82±0. 033)nmol/L, P<0. 05]. Conclusion GABA can inhibit the proliferation of QBC939 cells by promoting apoptosis and inhibiting telomerase activi-ty, which may be mediated by the information transmission of post-receptor.

Objective To investigate the effect of nuclear factor-kappa B(NF-κB) on the expression of parathyroid hormone receptor (PTH1R) and serum calcium level in rats with acute necrotizing pancreatitis (ANP) rats. Methods 24 male Sprague-Dawley rats were randomly divided into sham operation group (SO), ANP group, pyrrolidine dithiocarbamat (PDTC, an inhibitor of NF-κB) pretreated ANP group (PDTC), with 8 rats each group. ANP model was induced by injecting 5% sodium taurodeoxyebolate into biliary pancreatic duct. Serum calcium was measured and the expression of NF-κB was determined by western blot and the expression of PTH1R was examined by RT-PCR plus western blot 6 h after ANP induction. Results The NF-κB proteins of bone and kidney tissues in ANP group were 1.53±0.08 and 0.47±0.19, respectively; in PDTC group they were 0.61±0.13 and 0.36±0.06 with significant difference (P<0.05). The PTH1R mRNA expressions of bone and kidney in ANP group were 0.27±0.08 and 0.29±0.06, respectively; the PTH1R proteins expressions were 0.87±0.07 and 0.31±0.09, respectively. The corresponding values in PDTC group were 0.57±0.27 and 0.37±0.11, 1.13±0.17 and 0.68±0.15, respectively, with significant difference (P<0.05). The activity of NF-κB increased in ANP group, the expressions of PTHI R decreased significantly. Compared with ANP group, the activity of NF-κB decreased and the levels of PTH1R and serum calcium increased in PDTC group (P<0.05). Conclusions NF-κB may indirectly down-regulate the expression of PTH1R, which resulting into the hypocalcaemia of ANP. PDTC may alleviate hypocalcaemia in ANP.