Qianjin Wenwu decoction suppresses renal interstitial fibrosis by enhancing the degradation of extracellular matrix in mice with unilateral ureteral obstruction / 中国天然药物

Diabetic kidney disease (DKD) is the most common complication of diabetes mellitus (DM). Qianjin Wenwu decoction (QWD), a well-known traditional Korean medicine, has been used for the treatment of DKD, with satisfactory therapeutic effects. This study was designed to investigate the active components and mechanisms of action of QWD in the treatment of DKD. The results demonstrated that a total of 13 active components in five types were found in QWD, including flavonoids, flavonoid glycosides, phenylpropionic acids, saponins, coumarins, and lignins. Two key proteins, TGF-β1 and TIMP-1, were identified as the target proteins through molecular docking. Furthermore, QWD significantly suppressed Scr and BUN levels which increased after unilateral ureteral obstruction (UUO). Hematoxylin & eosin (H&E) and Masson staining results demonstrated that QWD significantly alleviated renal interstitial fibrosis in UUO mice. We also found that QWD promoted ECM degradation by regulating MMP-9/TIMP-1 homeostasis to improve renal tubulointerstitial fibrosis and interfere with the expression and activity of TGF- β1 in DKD treatment. These findings explain the underlying mechanism of QWD for the treatment of DKD, and also provide methodological reference for investigating the mechanism of traditional medicine in the treatment of DKD.

In Vitro Release of Evening Primrose Oil Microspheres / 中国药房

OBJECTIVE:To study the release characteristics of Evening primrose oil microspheres in vitro. METHODS:UV spectrophotometry was adopted to determine the accumulated release of microspheres under different media,and the drug release behaviors in vitro were fitted using zero-order,first-order and Higuchi equations. RESULTS:The accumulated release of microspheres in the gastrointestinal liquid (within 6 h) was up to(92.84?0.35)%;under the media of artificial gastric juice,the release of drug conformed to Higuchi equation:Q=5.941t1/2—11.083(r=0.991 7); under the media of artificial intestinal juice,the release of drug was in line with first-rate equation:ln(100—Q)=—0.487 4t+4.588(r=0.996 4). CONCLUSION:This method is simple,accurate and reproducible,and it can be used for the determination of the release rate of the Evening primrose oil microspheres.

Enzymolysis technology of ginsenoside Rg1 from Panax ginseng by orthogonal design / 中草药

Objective To optimize the enzymolysis technology of ginsenoside Rg1.Methods Taking ginsenoside Rg1 content as the index,orthogonal design method was used for optimization and HPLC for determination.Results Cellulase enzymolysis was the best extracting process,and enzyme amount,enzymolysis time,and enzymolysis temperature had obvious effect on the extraction of ginsenoside Rg1.The optimum extraction technologies were as follows: cellulase amount was 1.4%,enzymolysis time 60 min,the enzymolysis temperature 45 ℃.Conclusion The optimization extraction technology is simple,steady,and the extracting rate is high.