Objective To study the effects of Danhong mixture on platelet aggregation of rabbits.Methods 40 rabbits were randomly divided into 5 groups,8 rabbits in each group,of blank control group (treated with 0.5％ sodium carboxy methyl cellulose of the same volume),Danhong mixture of 5,2.5,1.25 g/kg group,aspirin group (treated with 0.025 g/kg aspirin).Each group was performed gastric lavage according to the ration of lml/kg,once daily,for continuous 8 days.Blood was obtained from heart 1 hour after last administration,then adenosine diphosphate (ADP),collagen,arachidonic acid (AA) were used for platelet aggregation test.Results Inhibition rate of Danhong mixture (5,2.5,1.25 g/kg) on ADP induced rabbit platelet aggregation were 9.4％,5.1％,and 0.6％ respectively,on collagen induced platelet aggregation were 34.5％,11.1％,and 5.6％; on AA induced platelet aggregation were 21.4％,11.6％,and 2.3％ respectively.Conclusion Danhong mixture had inhibitive action on platelet aggregation.

Objective To observe analgesic and croton oil-induced ear swelling effect of Chinese pine node.Methods Acetic acid writhing method and water tail-flick method was used to observe the analgesic effect,croton oil-induced ear swelling method was used to research anti-inflammatory effect.Results The inhibition rate of 1.0 g/kg,0.5 g/kg,0.25 g/kg of Chinese pine node on mice writhing response induced by acetic acid was 54.0％,44.3％,38.1％,and the inhibition rate on croton oil-induced mouse ear swelling was 48.4％,14.7％,7.4％.But no obvious influence on mice water tail-flick pain threshold.Conclusion Chinese pine node has anti-inflammatory and analgesic effects.

Objective To study the effects of Danhong Granule on blood rheology of blood stasis rats,and further to investigate the mechanism of promoting blood circulation and removing blood stasis.Methods 60 SD rats were selected and randomly divided into 6 groups,namely,normal control group,model group to the capacity of 0.5％ sodium carboxymethyl cellulose (CMC-Na),Danhong granules in high dose group (3 g/kg),Danhong granules dose group(1.5 g/kg),Danhong granules low dose group(0.75 g/kg),and compound Danshen dripping pill group(3 g/kg).Each group received gastric lavage at 1 ml/kg volume,1/d,for 7 days.After the last administration,the rat model of blood stasis was reproduced by subcutaneous injection of high dose epinephrine with ice water bath method.The effects of Danhong granules on blood rheology of blood stasis model rats were studied.Results Danhong granules in high dose group and compound Danshen dripping pills could reduce blood stasis model rats in blood viscosity (high shear,cut and low cut values were:Danhong granules in high dose group were(5.69±0.16)mPa·s,(6.97±0.48)mPa·s,(22.56±1.69) mPa·s; Compound Danshen Dropping Pill group (5.71 ± 0.24) mPa·s,(7.04 ± 0.51) mPa·s,(22.63 ± 1.64) mPa·s,plasma viscosity respectively:Danhong granules in high dose group were (1.43 ±0.03)mPa·s,compound Danshen dripping pill group(1.42±0.03)mPa·s,RBC (hematocrit value were:Danhong granules in high dose group were (0.42± 0.027) L/L,compound Danshen dripping pill group (0.41 ± 0.032) L/L; Danhong granules dose group could significantly lower the blood stasis model rats in blood viscosity (high,low cut)value (5.95 ± 0.37) mPa·s,(23.45 ± 1.57) mPa·s,plasma viscosity(1.47 ± 0.02)mPa·s and RBC hematocrit value (0.48 ± 0.029) L/L low dose group; Danhong granules low dose group could reduced blood stasis model rats obviously in blood viscosity (high shear,cut and low shear),plasma viscosity and hematocrit values of RBC [respectively:the whole blood viscosity in(7.15±0.41)mPa · s,(7.86±0.36)mPa · s,(28.68±1.69)mPa · s,(1.67±0.03)mPa · s,(0.50±0.033)L/L].Conclusion Danhong Granule can reduce the blood stasis model rats in blood viscosity (high shear,cut and low shear),plasma viscosity and hematocrit value of RBC,by activating blood circulation,removing blood stasis and improving blood rheology.

ObjectiveTo observe the effect ofHaizao-Xiangsheng mixture on signs and symptoms, blood index and tissue pathology of rabbit models with chronic pharyngitis.Methods60 Japanese white rabbits by random grouping method were divided into normal control group, model group, positive control group andHaizao- Xiangsheng mixture with high, medium and low dose group, with 10 rats in each group. Except the normal control group, rabbits in other groups were performed spraying ammonia in pharyngeal portion and submucosal injection of turpentine oil preparation to create chronic pharyngitis models. TheHaizao- Xiangsheng mixture, high, medium and low dose group were treated withHaizao-Xiangsheng mixture of 42, 21, 10.5 g/kg, the positive control group was treated with watermelon frost Runhou tablet suspension 5.04 g/kg, the normal control group and model group were treated with the same volume of saline. Animal signs and symptoms were recorded daily (including general conditions and temperature). After continuous administration of 7 days, red blood cell count (RBC), white blood cell count (WBC), percentage of neutrophils (N%), the percentage of mononuclear cells (M%) and percentage of lymphocytes (L%) were detected to observe the histological change of pharyngeal mucosa and lower tissue pathology.ResultsAfter administration, compared with the model group, high dose group ofHaizao-Xiangsheng mixture rabbit body temperature dropped (38.90 ± 0.21℃ vs. 39.23 ± 0.39℃,P< 0.05), WBC (10.1 ×1012/L ± 1.73 ×1012/Lvs. 13.1 ×1012/L ± 1.69 ×1012/L) decreased, and RBC increased (5.73 ×109/L ± 0.59 ×109/Lvs.5.19 ×109/L ± 0.43 ×109/L,P<0.01).ConclusionsHaizao-Xiangsheng mixture can improve signs and symptoms, hematology indexes and histopathological changes of the experimental rabbit models of chronic pharyngitis.