Objective To study the mechanism of Shoucong to prevent and cure Alzheimer's disease by observing the effect of shoucong capsule on total autioxidative capacity (TAOC), Lipofuscin (LIP) in AD rat brain tissue and blood, and brain tissue pathological changes. Methods Male wistar rats were randomly divided into 5 group:blank compared group, model compared group, Naofukang group, Shoucong Capsule (low, high dose) group. AD compound model rats were made by injected with D-galactose on the neck of rats, then injected with scopolamine in the intraperiton of rats. They were prevented and cured with Shoucong Capsule. TAOC, LIP level in rat brain tissue and blood were examined with spectroscopic analysis, brain tissue pathological changes were observed under light microscope. Results Compared with AD model group, Shoucong Capsule enhanced TAOC level in rat brain tissue and blood, deceased LIP level in rat brain tissue, and lessened the pathological injury of dementia rats. Conclusions Enhancing TAOC level and deceasing LIP level in brain tissue and blood may be one of the mechanism for Shoucong Capsule to prevent and cure Alzheimer's disease.

Objective To study effects of Shoucong capsule on the learning-memorial ability,CAT and MAO activities in brain tissue of AD rat.Methods Male Wistar rats were randomly divided into 5 group:blank compared group,model compared group,Naofukang group and Shoucong capsule(low,high dose) group,every group contained 9 rats.They were injected with D-galactose into the neck and injected with scopolamine into the intraperiton to making AD compound model rats.The learning-memorial ability were examined by diving-stand test,and CAT and MAO activities in brain tissue were determined by spectrophotometry.Results Shoucong capsule greatly deceased error time and enhanced the electric latent period,and enhanced the activities of CAT while deceased the activities of MAO in model rats.Conclusions Shoucong capsule has significantly effect of preventing and treating senile dementia in AD rats by enhancing the activities of CAT and deceasing the activities of MAO in brain tissue.

Objective: To probe and reveal the brain tomic and the wise sharpening action of Fuyuanbunao Granules and Its toxicity and side effect. Methods: The effects of Fuyuanbunao Granules on the memory acquisition disturbance induced by pentobarbital sodium or anisodine, the memory consolidation disturbance induced by sodium nitrite, and the memory repetition disturbance induced by alcohol were observed. Meanwhile, the acute toxicity test was done. Results: The granules could obriously improve the memory disturbance induced by the factors obove, and the improvement effect varied with the dose. The effects of larger dose groups were more obvious. There were no death of animals or toxicity and sile effect in test. Conclusion:Fuyuanbunao Granules maybe have the cholinergic acction. It can promote the aerobic metabolism, improve the cerebral anoxia and the inhibited state of center nervous system. It has low toxicity and can be used in clinical application.

Objective To explore the influencing mechanism of Zhengan Xifeng Decoction on blood pressure and gastrointestinal motility in SHR. Methods After 15 WKY and 90 SHR rats were were randomly divided into normal control group, model group, Benner Pury group, amlodipine group, Zhengan Xifeng Decoction high, middle, and low dose groups. The normal control group and model group were fed with distilled water daily. Rats in treatment group were administered with corresponding drugs daily. Blood pressure, gastric residual and intestinal propulsive ratio of rats was detected after eight-week intervention. Results Compared with the blank control group, systolic pressure, diastolic pressure, and mean arterial pressure were significantly higher than WKY rats of same age (P<0.05). Compared with the model group, the systolic pressure, diastolic pressure, and mean arterial pressure of treatment groups were significantly reduced (P<0.05). Compared with the blank control group, gastric residual rate of rats in the model group significantly decreased (P<0.05). Compared with the model group, the gastric residual rate in Zhengan Xifeng high dose group increased significantly, and intestinal propulsive ratio significantly increased (P<0.05), without statistical significance in the other treatment groups. Conclusion Zhengan Xifeng Decoction can reduce blood pressure in SHR, and regulate gastrointestinal motility.

Objective To study the effects of duration of migration from sea-level to high-altitude on cerebral hemodynamic parameters and their ethnic differences.Methods This randomized comparative study recruited 5 groups of healthy male subjects which were native Hans at sea-level (NHS),Han migrants from sea-level to high-altitude (HMSH,where HMSH-a for residence duration of 4 days,HMSH-b for 1 year,and HMSH-c for 5 years),and native Tibetans at high-altitude (NTH).Color duplex Doppler sonography (CDDS) was used to measure bilateral vertebral and internal carotid arterial diameters,mean flow velocities.The heart rate,arterial blood pressure,and arterial oxygen saturation were also recorded simultaneously,and in combination,hemoglobin was measured to assess total cerebral blood flow (TCBF),total cerebrovascular resistance (TCVR),and total cerebral oxygen supply (TCOS).Results After migration to high-altitude,Hans' TCVR and TCBF maintained the level of NHS after transient changes during early stage (P<0.05),and the TCBF was markedly higher than that of NTH (P<0.05);while the blood pressure and TCOS increased abruptly (P<0.05) at the beginning and kept for a relatively long time at a constant level which were higher than those of NTH all the time (P<0.05).Conclusions Han migrants can acclimate to high-altitude by adaptive change of cerebral blood flow over a short time and maintain a constant adaptability which is always weaker than that of native Tibetans.CDDS can be used for non-invasive measurement of actual cerebral blood flow,and is of good value in the study on high-altitude-related cerebral hemodynamics.