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Objective: Through the preparation of puerarin self-microemulsifying osmotic pump controlled-release capsule and controlled-release insoluble drug to improve the bioavailability of puerarin. Methods: Through the construction of self-microemulsifying osmotic pump controlled-release capsule of puerarin to do quantitative determination using microemulsion chromatography method. Through the single factor investigation, the three influencing factors were determined: dosage of penetration enhancer NaCl, coating weight, and porogen PEG 400. The optimal prescription was predicted by using central composite design and response surface optimization. Results: The formulation for puerarin self-microemulsifying osmotic pump controlled-release capsule was puerarin 0.07 g, ethyloleate 0.25 g, Polysorbate 80 0.45 g, PEG 400 0.3 g, mannitol 1.07 g, and NaCl 1.07 g. Based on the release of preparation and prediction of prescriptions in 4, 8, and 12 h, the controlled-release capsule conformed to the zero-order release model. Conclusion: Self-microemulsifying osmotic pump capsule could solve the controlled-release of insoluble drugs.
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OBJECTIVE: To establish the quality standard of Yuquan capsules. METHODS: The composition of Yuquan capsules, such as Puerariae lobata, Panax ginseng, Glycyrrhiza uralensis, Astragalus membranaceus, Schisandrae chinensis, were identified by TLC. The content of puerain was determined by HPLC. RESULTS: The identified components of Yuquan capsules were P. lobata, P. ginseng, G. uralensis, A. membranaceus, S. chinensis. The linear range of puerain were 0.127 5～1.02 ?g(r=0.999 9) with an average recovery of 100.29%(RSD=1.68%). CONCLUSION: Established standard can be used for the quality control of Yuquan capsules.
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[Objective] To observe the therapeutic effect of puerain with corticosteroid on nonanterior ischmic optic neuropathy (NAION).[Methods] In 58 patients(60 eyes)who were diagnosed as NA10N,29 patients (30 eyes)underwent intravenous drip with puerain and corticosteroid (treatment group);and the other 29 patients (3o eyes)underwent intravenous drip with corticosteroid and compound anisondine (control group).[Results] The visual acuity was better in treatment group than that in control group with a significant difference (x2=4.83,P
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Objective To investigate whether the effect of puerarin on right ventricle hypertrophy of pulmonary hypertensive rats induced by chronic hypoxia-hypercapnia was related to new peptide Apelin or its receptor(APJ).Methods Thirty male Sprague-Dawley rats were randomly divided into three groups, they are control group,hypoxia-hypercapnia 4-week model group,and hypoxia-hypercapnia 4-week plus puerarin group.The concentrations of Apelin-36 protein in plasma and homogenate of right ventricular muscle were detected by radioimmunoassay.The mRNA expressions of Apelin and APJ in right ventricu- lar muscle were measured by semi-quantitive reverse transcription polymerase chain reaction(RT-PCR). Results The weight ratio of right ventricle to left ventricle plus septum[RV/(LV+S)] in model group was significantly higher than that in control group(P0.05).The plasma concen- tration of Apelin-36 protein in model group was significantly higher than that in control group(P
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AIM:To establish the methods of determining 2,3,5,4′-tetrahydroxystilbene-2-O-?-D-glycoside,puerain;ginsengnoside Rg_1,ginsengnoside Rb_1,notoginsengnoside R_1,and salvianolic B in Jiangzhi Jianfei Tablets(Radix Polygoni multiflori,Radix Puerariae lobatae,Radix et Rhizoma Notoginseng,Radix et Rhizoma Salviae miltiorrhizae,etc) with HPLC. METHODS: All chromatogram columns used were ODS columns.The mobile phase of acetonitrile-wate(25(∶)75) was chosen for 2,3,5,4′-tetrahydroxystilbene-2-?-D-glycoside.The flow rate was 1.0 mL/min.The detection wavelength was at 320 nm.The mobile phase of methanol-water(25(∶)75) was chosen for puerain.The flow rate was 1.0 mL/min.The detection wavelength was at 250 nm.The mobile phase of acetonitrile-water was chosen for ginsengnoside Rg_1,ginsengnoside Rb_1 and notoginsengnoside R_1.The flow rate was 1.0 mL/min.The detection wavelength was at 203 nm.The mobile phase of methanol-acetonitrile-methane acid-water(30(∶)10(∶)1(∶)59) was chosen for salvianolic B.The flow rate was 1.0 mL/min.The detection wavelength was 286 nm. RESULTS: The linear rangers were 0.476 ?g-4.760 ?g(r=0.999 6) for 2,3,5,4′-tetrahydroxystilbene-2-?-D-glycoside,0.168 96 ?g-1.689 6 ?g(r=0.999 8) for puerain,0.724 ?g-7.240 ?g(r=0.999 8) for ginsengnoside Rg_1,0.728 ?g-7.280 ?g(r=0.999 9) for ginsengnoside Rb_1,0.23 ?g-2.30 ?g(r=0.999 8) for notoginsengnoside R_1,0.306 ?g-3.060 ?g(r=0.999 9) for salvianolic B.Their average recoveries were 99.43%(RSD=1.08%,n=6),99.43%(RSD=1.66%,n=6),101.17%(RSD=2.08%,n=6),and 102.39%(RSD=2.60%,n=6),respectively. CONCLUSION: These methods of determining components in four kinds of herbs are simple,accurate,reproducible and can be used for quality control of Jiangzhi Jianfei Tablets.