Objective To observe the effect of total flavonoids of ampelopsis grossedentata on blood lipid and hemorheology in atherosclerosis rats .Methods The atherosclerosis model in rats was made by freeing high grease food and intraperitoneal injection of vitamin D3 ,total flavonoids of ampelopsis grossedentata was gave by gavage ,and the level of serum lipid and blood rheology were tested 24 weeks later .Results Total flavonoids of ampelopsis grossedentata could obviously decreased the level of TG ,TC ,LDL , and increased HDL(P<0 .05) .It could significantly decrease whole blood viscosity ,plasma viscosity and hematocrit (P<0 .05) . Conclusion Total flavonoids of ampelopsis grossedentata can adjust fatty substance metabolism ,improve hemorheology of athero-sclerosis rats ,and has therapeutic effect for atherosclerosis .

Objective To observe the effect of dihydromyricetin of ampelopsis grossedentata on lipid metabolism and antioxidation in atherosclerosis (AS) rats. Methods Sixty Wistar rats were randomly divided into five groups (n = 12 each):normal control group, model control group, positive control group, high dose dihydromyricetin group (40 mg·kg-1 ) and low dose dihydromyricetin group (10 mg·kg-1 ). Except normal control group, rats in the other groups were injected with a single dose of vitamin D3(600 000 U·kg-1 ) and loaded with high fat diet to establish AS model. Simvastatin (5 mg·kg-1 ) was intragastrically administered to positive control group. High and low dose dihydromyricetin groups received intragastric administration of 40 and 10 mg·kg-1 dihydromyricetin, respectively. Equal volume of purified water was given to normal and model group. After 24 weeks of administration, serum levels of lipids, activities of superoxide-dismutase (SOD) and malonicdialdehyde (MAD) were determined. Results As compared with model control group, triglycerides (TG) of high and low dose dihydromyricetin groups was decreased [(191. 65±101. 10) vs. (111. 10±29. 29) and (120. 55±38. 12) mg·L-1 , respectively], total cholesterol (TC) was decreased [(151. 64±33. 62) vs. (148. 49±30. 14) and (118. 90±27. 38) mg·L-1 ], and high density lipoprotein cholesterol (HDL-C) was increased [(1. 29±0. 68) vs. (2. 10±0. 70) and (1. 62±0. 61) mmol·L-1 ], low density lipoprotein cholesterol (LDL-C) was decreased [(5. 01±1. 33) vs. (3. 97±0. 78) and (4. 28±0. 79) mmol·L-1 ], activity of SOD was increased [(141. 03±42. 52) vs. (187. 97±42. 08) and (150. 99±46. 17) U·mL-1 ], and MDA was decreased [(20. 51±3. 81) vs. (17. 64±1. 54) and (18. 52± 3. 42) nmol·mL-1 ], with significant differences (P<0. 05, P<0. 01). Conclusion Dihydromyricetin can reduce the level of serum lipid, improve antioxidation activity, and has therapeutic effect for atherosclerosis.

Objective To study the effects of Androsace umbellata extract on bone wound healing in rats.Methods A total of 32 rats were selected,and the rat femur bone trauma model was established.The Androsace umbellata was administrated to rats in treatment groups (including high-dose Androsace umbellata group and low-dose Androsace umbellata group,8 rats in each group)continuously for 10 days,while rats in the fake operation control group (8 rats)and bone trauma model group (8 rats) were treated with corresponding volume of solvent by body weight.The growth of body weight and wound healing of rats were recorded.The serum levels of calcium and phosphorus,activity of alkaline phosphatase (ALP),bone density and bone biomechanics were examined.The X-ray photograph was carried out to observe the effects of Androsace umbellata on bone wound healing,Results Compared with the bone trauma model group,serum levels of calcium and phosphorus,calcium-phosphorus product and activity of ALP were significantly increased in treatment groups,there were statistically significant differences (P＜0.05).Compared with the bone trauma model group,bone density of trauma place in the high-dose Androsace umbellata group was significantly decreased (P＜0.05),bending energy in the low-dose Androsace umbellata group was increased (P＜0.05),while no statistically significant difference was found in the other skeletal biomechanical properties (P＞0.05).The results of X-ray films indicated that the treatment groups shown better effects on bone wound healing compared with the bone trauma model group.Conclusion Androsace umbellata extract could effectively promote bone wound healing in rats.

Aim To investigate the antidepressive-like effect of ethyl alcohol extract of Polyrhachis vicina Rog-er(EAPR),and its mechanism.Methods EAPR was prepared by ethanol extraction.Its anti-depressive effect was investigated by tail suspension test (TST) and forced swimming test (FST).Furthermore,repeated doses of reserpine was used for preparing the depres-sive rats.Results EAPR has definitely anti-depres-sive effect,as evidenced by the decreased immobility time in FST and TST at the doses of 8 and 4 g·kg -1 (P <0.05).In the repeated reserpine evoked depres-sive rats,EAPR antagonized the symptoms induced by monoamines depletion and attenuated the anhedonia, as manifested by reversed hypothermia,akinesia and sucrose consumption at the doses of 8 and 2 g·kg -1 (P <0.05,P <0.01).Neuro-chemical studies showed that AFPR significantly increased the concentration of monoamines,including 5-hydroxytryptamine (5-HT) and noradrenaline(NA)at the dose of 8 g·kg -1 (P <0.05),and had no effect on normal rats .Furthermore, EAPR increased the activity of superoxide dismutase (SOD)in serum,hippocampus and cerebral cortex at the dose of 8 g·kg -1 (P <0.05).Conclusion EA-PR possesses the definite antidep ressive properties, connected with the regulation of neurotransmitter me-tabolism and the nerve cells antioxidant effect.