Objective To optimize the sulfated modification conditions for Rhizoma Smilacis Glabrae polysaccharides (RSGP),and to investigate the possibility of enhancing the activity of RSGP after sulfating modification.Methods RSGP was modified by cholorosulfonic acid-pyridine.With the yield,carbohydrate content and sulphate substitution degree as the observation indexes,L9 (34)orthogonal design was used to optimize reaction time,reaction temperature and reagent ratio.The degree of sulphate substitution was determined by barium chloride turbitimetry,and the carbohydrate content was detected by sulfuric acid-phenol method.Then the structures of the sulfated modified products were analyzed by infrared radiation (IR) spectrum.Methyl thiazolyl tetrazolim(MTT)assay was used to determine the anti-tumor activity of sulfated RSGP on HepG2 and MCF-7 cell lines.Results The optimized modification conditions of RSGP were sulfating RSGP with cholorosulfonic acid-pyridine in the ratio of 1:6 for 4.5 hours at 60 ℃.The MTT assay results showed that the sulfated RSGP could inhibit the growth and proliferation of human liver cancer HepG2 cell line and human mammary cancer MCF-7 cell line in concentrationdepending manner.Conclusion It is feasible for sulfating modification of RSGP with cholorosulfonic acid-pyridine,and sulfating modification can enhance the anti-tumor activitv of RSGP.

Aim To investigate the effects of sesamin on inflammation response of asthma and to explore its possible mechanism of action. Methods Forty male BALB/c mice were randomly divided into five groups with 8 mice in each group: normal group, ovalbumin ( OVA) group, sesamin low dose group, sesamin high dose group and dexamethasone( DXM) group. Asthma model mice were induced by OVA in vivo. The left lung was isolated for pathological examination. Experi-ment of ELISA and Western blot were used to deter-mine the effect of sesamin on IL-4 , IL-5 , IL-13 and IFN-γ expression. Hematoxylin and eosin stain was used to investigate pathological examination in lung tis-sue. Western blot was performed to detect the IκBαphosphorylation and NF-κB nuclear translocation. Re-sults The mice developed the following pathophysio-logical features of asthma: increased numbers of in-flammatory cells, increased levels of IL-4, IL-5 and IL-13 , decreased level of IFN-γ in bronchoalveolar lavage fluids ( BALF ) and lung tissues ( P <0. 05 ) , and increased IκBα phosphorylation and NF-κB nucle-ar translocation in lung tissues ( P <0. 05 ) . Adminis-tration of sesamin markedly reduced airway inflammato-ry cell recruitment, reduced the production of IL-4, IL-5 , IL-13 and increased IFN-γ in BALF and lung tissues( P <0. 05 ) . The increased IκBα phosphoryla-tion and NF-κB nuclear translocation after OVA inhala-tion were inhibited by the administration of sesamin. Conclusion Sesamin attenuates inflammation re-sponse of asthma through suppression of NF-κB activa-tion.

Background Replase of uveitis is a primary cause of vision damage.To predict recurrentassociated factors for uveitis is very critical for the prevention and management of uveitis.Objective This study was to explore the risk factors of recurrent uveitis and establish the prediction model of recurrent uveitis.Methods Clinical data of recurrent uveitis patients who were diagnosed in Renhe Hospital of Three Gorges University from July 1,2010 to June 30,2011 were retrospectively reviewed.The demography characteristics of the patients were collected and the disease was followed-up under the informed consent.Kaplan-Meier method was used to estimate the disease recurrence rate and to plot relapse-free survival curve at different levels of predictive factors.Multivariate Cox proportional hazards model was used to select independent risk factors of relapse and establish the prediction model for recurrent uveitis.Results Total 825 cases of recurrent uveitis were included and followed up for 1 month to 38 months,with a median following-up time of 16 months.Relapse of uveitis was identified in 149 cases (18.1％)during the following-up duration.The relapse-free survival time was from 1 month to 38 months,and the 1-,2-and 3-year cumulative recurrence-free survival rates were 87.3％,82.8％ and 80.9％.Multivariate Cox proportional hazards regression analysis showed that immunosuppression withdrawal(X1) (β =0.940,Waldx2 =12.018,P =0.001),oral steroid withdrawal (X2) (β =1.334,Wald x2 =18.450,P ＜ 0.001),colds (X3) (β =0.642,Wald x2 =11.988,P =0.001),work and study stress(X4) (β=0.285,Wald x2 =4.925,P=0.026) and excessive alcohol and tobacco(X5) (3--0.541,Wald x2 =4.718,P =0.030) were the independent risk factors for recurrence of uveitis.The risk of recurrence in patients with uveitis function model expression was h (t)=h0 exp (2.559 X1 +3.797 X2 + 1.901 X3 + 1.331 X4 +1.719 X5).Conclusions Replase of uveitis is an interaction of many factors,and immunosuppression withdrawal,oral steroid withdrawal,colds,work and study stress,excessive alcohol and tobacco are independent risk factors for recurrence of uveitis.An intervention according to the controllable factors is one of the important ways to prevent the recurrence of uveitis.

OBJECTIVETo explore the protective effects and mechanism of ethanol extract of Inonotus obliquus (EEIO) injection on asthmatic mice.

METHODOVA was injected intraperitoneally and inhaled to produce the asthmatic model. Thirty two mice were randomly divided into four groups: control group, asthma group and I. obliquus groups of high and low dose. The concentrations of IL-4, IL-5, IL-13 and IFN-gamma in BALF, the phosphor-p38 MAPK in lung tissues were respectively measured by ELISA and Western blotting. The number of inflammatory cells in BALF and histopathology changes were observed.

RESULTIn asthmatic group, the number of inflammatory cells and the concentrations of IL-4, IL-5, IL-13 in BALF and phospho-p38 MAPK in lung tissue were higher, while IFN-gamma were lower than those in normal control mice (P < 0.05). In I. obliquus group, the number of inflammatory cells, the concentrations of IL-4, IL-5, IL-13 in BALF and phosphor-p38 MAPK in lung tissue were lower, but were higher than those in normal control mice (P < 0.05), and histropathology damage was alleviated significantly. There was no significant difference observed among the efficacies in the I. obliquus groups of high and low dose.

CONCLUSIONp38 MAPK may play a role in pathological process of asthma. I. obliquus effectively treats asthma by inhibiting the expression of phosphor-p38 MAPK, correcting the unbalance of IFN-gamma/IL-4 and decreasing the number of inflammatory cells.

Animals ; Anti-Asthmatic Agents ; isolation & purification ; pharmacology ; Asthma ; drug therapy ; metabolism ; pathology ; Basidiomycota ; chemistry ; Basophils ; drug effects ; metabolism ; Bronchoalveolar Lavage Fluid ; cytology ; immunology ; Disease Models, Animal ; Interferon-gamma ; drug effects ; metabolism ; Interleukin-13 ; metabolism ; Interleukin-4 ; metabolism ; Interleukin-5 ; metabolism ; Lung ; pathology ; Lymphocytes ; drug effects ; metabolism ; Mice ; Mice, Inbred BALB C ; Neutrophils ; drug effects ; metabolism ; Phytotherapy ; Plant Extracts ; pharmacology ; p38 Mitogen-Activated Protein Kinases ; drug effects ; metabolism