This study was aimed to optimize the ethanol extraction technology ofXiao-Xu-Ming (XXM) decoction. The extraction rates of paeoniflorin, ferulic acid, tetrandrine and yield extract were used as comprehensive evaluation indexes. The amount of ethanol, extraction times, extraction time and concentration of ethanol were selected as factors. The orthogonal design was used to optimize ethanol reflux extraction technology of XXM decoction. The results showed that the optimum extraction conditions were as follows: refluxing extracted 3 times with 10 folds, 70% ethanol, 1.5 h for each time. It was concluded that the optimized extraction process was objective, practical, reasonable and stable, which provided experimental basis for industrial production of XXM decoction.

[ ABSTRACT] AIM:To investigate the effect of triptolide on the inhibition of microglial activation in 1-methyl-4-phenyl pyridinium ( MPP+)-induced hemiparkinson disease rats.METHODS:The rat model of Parkinson disease was es-tablished by intranigral injection of MPP +.The rats were randomly divided into sham group, MPP+group, triptolide group and vehicle group.The survival of dopaminergic neurons was detected by the immunofluorescence of tyrosine hydroxylase ( TH) in the substantia nigra ( SN) .The activation of microglia was determined by immunofluorescence of OX-42 ( micro-glia marker) in the SN.The expression of chemokine receptor CX3CR1 in SN was measured by Western blotting.RE-SULTS:Intranigral injection of MPP+increased the fluorescence intensity of the microglial marker, and promoted DA neu-ron degenerative death.Immunohistological analysis showed that the OX-42 density was decreased (P<0.01) and tyrosine hydroxylase (TH) positive neurons were increased in the triptolide group (P<0.01).The expression of CX3CR1 was lower in triptolide group than that in model group (P<0.05).CONCLUSION:Triptolide may improve PA neurons func-tion in MPP+-induced rats through inhibiting CX3CR1 expression and microglial activation.

Based on the research results of aspiration in patients with dysphagia after ischemic stroke at home and abroad, this paper reviews the definition, detection methods, and risk factors of aspiration and emphasizes the incidence rate and severity of this disease. The authors conclude that preventing aspiration can decrease the incidence rate of aspiration pneumonia, change the clinical outcome of patients, and thereby save medical resources.