OBJECTIVE Toexplorethefeasibilityofpreparingamigrainemodelusingratdura materofsuperiorsagittalsinusinfollowingelectricalstimulation.METHODS MaleSDratswereexposed to 1 h electrical stimulation after brain electrode implantation,at 3 V,6 Hz,and a pulse of 0.25 ms.At 0, 1 5,30 min,and 1 h,orbital blood and brain tissue were taken.The content of calcitonin gene-related peptide (CGRP),substance P and prostaglandin E2 (PGE2 )in the plas ma and brain tissue was detec-tedbyradioimmunoassay.RESULTS ThebraintissuecontentofCGRP,substancePandPGE2in the sham group and normal group was not significantly different.CGRP,substance P and PGE2 in brain tissue of model group were 3.41 ±0.93,1 .80 ±0.64,3.41 ±0.93 and (1 .80 ±0.64)ng·g -1 respec-tively,significantly different from sham group(P<0.05).At different time points,the content of CGRP, substance P and PGE2 in plasma orbital venous plexus showed no significant difference between sham groupandmodelgroup.CONCLUSION ThereleaseofCGRP,PGE2andsubstancePinbraintissue is significantly different fro m that of plas ma after electrical sti mulation.The results suggest that a model of migraine can be constructed by electrical stimulation.

This study was aimed to screen main active site to reduce blood lipid from Xin-Mai (XM) capsule and establish HPLC fingerprint of the site, in order to study the correlativity between active site and relevant fractions of its herbs. Solvent extraction was used to separate XM capsule into different polar fractions. Intraperitoneal injection of 75% egg-yolk emulsion was used to establish mice hyperlipidemia models. And the active site was screened. Chromatographic fingerprints of the site and relevant fractions of its herbs were configured by HPLC analysis. The
retention time of peaks was utilized as index to evaluate the correlativity. The results showed that lipid-lowering effect of ethyl acetate extract and garlic essential oil was significant (P<0.01). Fingerprint of the active site in XM capsule was established with 28 fingerprint peaks and the assignment results of 27 peaks were indicated. It was concluded that the active sites to reduce blood lipid of XM capsule were ethyl acetate extract and garlic essential oil. The established fingerprint method can effectively determine the correlativity between the active site and its relevant fractions, which contributed to pharmacodynamic material foundation and quality standard.

This article was aimed to study the inhibitory effect of ginseng polysaccharide injection on tumor growth a-mong ICR mice after inoculation of S180 cells, and its immune mechanism as well as its synergic effect in reducing toxicity of cytoxan (CTX). The experiment was carried out in ICR mice after inoculation of S180 cells. The mice were randomly divided into the model group, the control group, the CTX group, and the drug combination group. After 10 days of medication, the inhibition of tumor growth, WBC, thymus index and spleen index were measured in mice dur-ing the experiment. The immunodepressed mice model was induced by CTX. Effects of ginseng polysaccharide injec-tion on serum hemolysin and monomuclear macrophage phagocytosis were evaluated. The results showed that the com-bination of ginseng polysaccharide injection and CTX can significantly increase the tumor inhibiting rate. It can also reduce the side effect and toxicity of CTX, which may improve the immunosuppression induced by CTX. It was con-cluded that ginseng polysaccharide injection can increase the therapeutic effects and reduce the toxicity of CTX.