Pharmacokinetics and tissue distribution of Chuanhuning emuslion in rats / 国际药学研究杂志

Objective To study the pharmacokinetics and tissue distribution of Chuanhuning-emulsion (CHE) in rats. Methods The commercial ordinary Chuanhuning injection was used as the reference (CHR) to evaluate the pharmacokinetics and tissue distribution of CHE. After intravenous administration of CHE or CHR(40 mg/kg) in rats, the concentration of dehydroandrographolide succinate (DAS, the active ingredients of CHE in vivo) was detected by LC-MS/MS. Pharmacokinetic analysis was performed using WinNolin 6. 2. Tissue distribution and targeting were evaluated through tissue concentrations. Results First, a suitable detection method was set up to study the pharmacokinetics of DAS. Second, there was no significant difference between CHR and CHE in the pharmacokinetic parameters. However, the concentrations of DAS in lungs of CHE group were higher than those in CHR group even at 2 h after iv administration of CHE or CHR. Conclusion CHE has a similar pharmacokinetic profile as CHR in rats. Furthermore, the cumulation of DAS in lungs is increased, which illustrates that CHE could enhance DAS targeted in lungs.

Effect of adjuvant therapy with Dingguier umbilical paste on intestinal flora of diarrhea infants and its action characteristics / 中国中药杂志

The applicator therapy is a unique method to treat infant diarrhea in traditional Chinese medicines and widely applied in clinical practice. Currently, many researchers have proved the rationality of the therapy based on the traditional Chinese medicine mechanism and on the data from clinical practice, but its action mechanism is uncertain at present. In this study, with the assistance of pediatric practitioners, the automated ribosomal intergenic-spacer analysis (ARISA) was adopted to study the effect of the adjuvant therapy with Dingguier umbilical paste on intestinal flora of diarrhea infants, in which Dingguier umbilical paste served as the adjuvant therapy in oral traditional Chinese medicines and fecal samples of infants with different diarrhea symptoms were collected and used as the study materials. The results showed that the adjuvant therapy had a significant effect on the shift of intestinal flora, which was associated with the decrease in the similarity difference to the normal control group and the increase in the number of operational taxonomic units (OTUs) shared with the normal control group. Additionally, adjuvant therapy with Dingguier umbilical paste also showed long action duration and increased OTUs number. These results indicated that Dingguier umbilical paste has the effect in restoring the micro-ecosystem of unbalanced intestinal bacteria. Intestinal flora may be one of major targets for the applicator therapy for the infant diarrhea, but not for the single oral traditional Chinese medicine for infant diarrhea.

Determination of astragulin in Thesium chinese by RP-HPLC / 中国中药杂志

<p><b>OBJECTIVE</b>To establish a determination method of astragulin in Thesium chinese.</p><p><b>METHOD</b>RP-HPLC analytical method was established using a Polaris C18 column and acetonitrile-water (23:77) as the mobile phase, with a flow rate of 10 mL x min(-1), detected at 346 nm. The method of sample is refluxing exation by 50% alcohol for 2 times.</p><p><b>RESULT</b>The content of astragulin was from 0. 120% to 0. 155%, in different groups of T. chinese collected from the same location.</p><p><b>CONCLUSION</b>The method was validated to show convenient and reliable.</p>

Study on liposome preparation technique of Bupleurum chinense volatile oil for injection / 中国中药杂志

<p><b>OBJECTIVE</b>To study the preparation technique of the liposome of Bupleurum chinense volatile oil.</p><p><b>METHOD</b>The composition, entrapment ratio of volatile oil, availability of freeze-drying and the changes of finger prints were studied.</p><p><b>RESULT</b>Entrapment ratio reached 81.9%. After freeze-dried, the remaining ratio of the oil entrapped in the liposome reached 88.6%.</p><p><b>CONCLUSION</b>It is practicable to make B. chinense injection into freeze-dried liposome powder.</p>