Objective To observe the hemolysis,allergic reactions and stimulation of Polydatin Injection(PI),thus to provide evidence for clinical medication.Methods Hemolysis was observed by in-vitro rabbit blood hemolysis.Sys- temic allergy and passive skin allergy were tested on guinea pigs and rats.Vascular stimulation and muscle stimulation were tested on rabbits.Results There was no hemolysis or reaction in erythrocyte agglutination 30,60 and 180 rain after adding PI.No systemic anaphylaxis was found in guinea pigs.There was no skin allergy passive in rats.There was no vascular stimulation or muscle stimulation after injecting PI(0.39 mg/mL)5.6 mg/kg into rabbit ears.Con- clusion Under experimental conditions,PI(0.39 mg/mL)shows no hemolysis in vitro or agglutination reaction;it has no systemic anaphylaxis or passive skin allergy;it either has no stimulating effect in rabbit auricular vessels and muscles.

【Objective】The chemical constituents of Viscum liquidambaricolum Hayata.were studied to screen the constituents with antitumor activity.【Methods】Chromatography was used for the isolation and purification of chemical constituents of Viscum liquidambaricolum Hayata..And their structures were identified on the basis of spectroscopic evidences and physiochemical properties.Meanwhile,the in-vitro antitumor activities of two kinds of triterpenoids and one kind of sitosterol were investigated.【Results】Four compounds were isolated from Viscum liquidambaricolum Hayata.and their structures were identified as genkwanin(1),?-amyrin acetate(2),erythrodiol(3) and ?-sitosterol(4).Compounds 2 and 3 had an inhibitory effect on mice sarcoma 180(S180),Ehrlich ascites carcinoma(EAC) and ascties hepatoma(HeAP),and compound 4 had an inhibitory effect on mice S180 and EAC,their half-inhibitory concentrations being less than 400??g/mL.【Conclusion】Compounds 1～4 are isolated from Viscum liquidambaricolum Hayata.for the first time,and compound 1 is isolated from Loranthaceae for the first time.Triterpenoids and steroids from Viscum liquidambaricolum Hayata.exert certain antitumor activity.