Objective To analyze the effects of salmeterol/fluticasone propionate aerosols fluticasone propionate and salmeterol joint tiotropium aerosol on pulmonary function and exercise tolerance in patients with chronic obstructive pulmonary disease (COPD),and to provide a theoretical basis for clinical treatment.Methods 119 COPD patients were selected in this study.They were randomly divided into 65 cases of seretide group and 54 cases of combined treatment group.Before treatment,three months after treatment and six months after treatment,the pulmonary function and 6MWD were measured in all patients.Results After 3 months,6 months of treatment,the FEV1,FEV1/FVC,FVC,6MWD of the combined treatment group had significant differences compared with before treatment (ta =-5.89,tb =-6.88,te =-8.46,tf =-8.86,ti =-10.74,tj =-8.52,tm =-9.37,tn =-13.04,all P ＜0.05).After 3 months,6 months of treatment,the FEV1,FEV1/FVC,FVC,6MWD in the control group had significant differences compared with before treatment (tc =-4.29,td =-7.19,tg =-6.16,th =-11.40,tk =-11.69,tl =-7.43,to =-11.71,tp =-10.53,all P ＜ 0.05).After 3 months of treatment,the differences of FEV1,FEV1/FVC,FVC between two groups were significant (tv =2.69,tq =6.74,tr =2.91,all P ＜ 0.05).In the control group,theFEV1,FEV1/FVC,FVC after 6 months of treatment had significant differences compared with after 3 months of treatment(ts =-2.50,tt =-9.46,tu =-1.65,all P ＜ 0.05).Conclusion Seretide and tiotropium aerosol aerosol can better improve lung function in patients with COPD and exercise tolerance,but the result of using two drugs to improve the patients'lung function was significantly better than seretide alone.

Objective Based on HPLC fingerprinting and chemometrics,to evaluate the quality of Schefflera kwangsiensis Merr.from Guangxi.Methods HPLC was used to establish fingerprints of Schefflera kwangsiensis Merr.from ten different origins,and gradient elution was carried out with methanol-0.1％phosphoric acid aqueous solution as mobile phase.Cluster analysis(CA),principal component analysis(PCA)and orthogonal partial least squares-discriminant analysis(OPLS-DA)were applied to evaluate quality.Results The fingerprints of Schefflera kwangsiensis Merr.from ten different origins were established by HPLC,a total of 22 common peaks were calibrated,with a similarity range of 0.922-0.999.Four chromatographic peaks were identified as rhodopsin,4,5-bis-O-caffeoylquinic acid,caffeic acid,and naringin.The samples were classified into four types according to the CA and OPLS-DA.PCA identified four principal components with a cumulative contribution rare of 95.39％.Conclusion The quality of Schefflera kwangsiensis Merr.can be comprehensively evaluated by fingerprinting combined with CA,PCA and OPLS-DA analysis.The Study can provide a reference for improving the quality control and assessment of Schefflera kwangsiensis Merr.