HPLC fingerprint spectrum of honey-fried Radix Glycyrrhizae / 中国中药杂志

<p><b>OBJECTIVE</b>To establish the HPLC fingerprint of the pieces of honey-fried Radix Glycyrrhizae.</p><p><b>METHOD</b>Using the reverse-performance liquid chromatography, method was performed on a Hyperclone ODS C18 column (4.6 mm x 250 mm, 5 microm) and acetonitrile-0.1% phosphoric acid was selected as mobile phase gradient elution were adopted.</p><p><b>RESULT</b>Established HPLC fingerprint of Radix et Rhizoma glycyrrhizae pieces were established, and the results of methodological study met the technical requirements for fingerprinting.</p><p><b>CONCLUSION</b>The HPLC method is stable, accurate, and reliable to provide a scientific basis of quality control standard for the honey-fried Radix et Rhizoma glycyrrhizae.</p>

Reversal of multidrug resistance of K562/ADM cells in vitro by the monomer of traditional Chinese medicine extract and investigation of its molecular mechanism / 国际肿瘤学杂志

Objective To investigate the reversal effect of the monomer of traditional Chinese medicine on muhidrug resistance(MDR) and its possible mechanism in K562/ADM cell line in vitro. Methods With different concentrations of baicalin, geniposide administered to K562/ADM cells, the proliferation of K562/ ADM cells was detected by the MTY assay. Expression of mdr-1 mRNA, Topo Ⅱ mRNA was measured by semi-quantitive RT-PCR. Results Thatbaicalin and geniposide could increase the sensitivity of K562/ADM cells to adriamycin, multiples of reversion were 1.95 times and 1.46 times. The proliferation of K562/ADM cells was in-hibited obviously by baicalin and geniposide, the level of mdr-1 mRNA expression was down-regulated and the Topo Ⅱ mRNA was up-regulated(P<0.01 ). Conclusion Baicalin and geniposide may reverse the multi-drag-resistance of K562/ADM cells, which was related to the down-regulation of mdr-1 expression and up-reg-ulation of Topo Ⅱ beta expression.

Isoflavones from vines of Pueraria lobata / 中国中药杂志

<p><b>OBJECTIVE</b>To investigate the isoflavones from the vines of Pueraria lobata.</p><p><b>METHOD</b>The compounds were isolated by column chromatography over silica gel and RP-C18, and purified by Sephadex LH-20 column chromatography and preparative TLC. The structures were elucidated on the basis of physico-chemical properties and spectral data.</p><p><b>RESULT</b>Twelve compounds were isolated and identified as: 3'-methoxydaidzein (1), formononetin (2), genistein (3), daidzein (4), daidzin (5), genistin (6), ononin (7), 5-hydroxyl ononin (8), calycosin (9), 6"-O-acetyl genistein (10), 6"-O-acetyl daidzin (11), puerarin (12).</p><p><b>CONCLUSION</b>For the first time, compounds 9-11 were isolated from the genus Pueraria plant, and compounds 1, 3, 6-8 were obtained from the vines of this plant.</p>

Influence of 70% ethanol extract from Huanglian Jiedu Decoction on expression of S180 tumor cell apoptosis factor in MDR model mice / 中华中医药杂志

Objective: To observe the effect of 70% ethanol extract from Huanglian Jiedu Decoction on expression of S180 tumor cell apoptosis factor in MDR model mice, and to research the molecule biology base fot directing clinic. Methods: simulate Clinic PFC project was simulated, the mice model of multi-drug resistance of S180 tumour cell was established. 70% Ethanol extract from Huanglian Jiedu Decoction were given for 10 days. The flow cytometry was used to observe Fas, Trail, CD54.,et al. Resluts: 70% Ethanol extract from Huanglian Jiedu Decoction can increase expression rate of Fas, Trail and improve apoptosis of S180 cell, at the same time it can decrease expression of CD54.Conclusions: 70% Ethanol extract from Huanglian Jiedu Decoction improve high level expression of apoptosis factor, and it maybe one of pass reverse multi-drug resistance of tumour.

Studies on chemical constituents from fruit of Crataegus pinnatifida / 中草药

Object To look for the proprietary constituent and the constituents with blood lipid regulating effect from the dried fruit of Crataegus pinnatifida Bge var major N E Br Methods Various column chromatographic techniques were employed for isolation and purification of the constituents UV, IR, EI MS, FAB MS, 1HNMR, 13 CNMR, HMBC, HMQC and 13 CGATE were used to identify the structure of the isolated constituents Results Six compounds were isolated from the fruit of C pinnatifida They were identified as 5, 7, 4′ trihydroxy flavone 8 C ? L rhamnopyranosyl (1→2) ? D glucopyranoside, i e vitexin rhamnoside (Ⅰ), hyperoside (Ⅱ), citric acid (Ⅲ), vitexin (Ⅳ), quercetin (Ⅴ), ursolic acid (Ⅵ) Conclusion Compound Ⅰ is a proprietary constituent in the fruit of C pinnalifida, which was obtained from this plant for the first time Compound Ⅱ is a main constituent with blood lipid reducing effect in flavonoids

Experimental Study on Pharmacology and Toxicology of Baizi Yangxin Pian / 中药新药与临床药理

Baizi Yangxin Pian is a reformed preparation of Baizi Yangxin Wan (bolus) listed in the Pharmacopoeia of People's Republic of China and is considered as a new drug of 4th class. According to the requirement of Regulations for New Drug Approval, its pharmacodynamics and acute and long-term toxicity tests were observed. It was shown that this preparation has a tranquilizing effect which is stronger than Baizi Yahgxin W an. LD_(50) is greater than 37.5g/kg. No toxic effect is revealed in rats after its long-term administration (9g/kg, 4.5g/kg and 3g/kg).

Pharmacokinetics of hydroxyl-?-dextrin sodium new houttuyfonate injection in beagle dogs / 中成药

AIM:To establish the method of determining sodium new houttuyfonate in plasma and study its pharmacokinetics in beagle dogs.METHODS:The HPLC was employed with chromatographic conditions,such as octa-silicane bond silica gel column(250 mm?4.6 mm,5 ?m)as analytical column,methanol-water-ammonium hydroxide with 4 butyls(70 ∶30 ∶0.3)as mobile phase and at the flow-rate of 1.0 mL/min.The UV detection was set at 286 nm.The pharmacokinetic parameters were calculated by DAS(ver 1.0)program and compared by statistic analysis.RESULTS:The calibration curve was linear in blood plasma over the concentration range of 0.128～25.575 mg/L(r= 0.999 2),good precision and high recoveries.The parameters were T_ max= 5.0 min,C_ max= 4.982 mg/L,T_ 1/2=8.67 min.CONCLUSION:The analytical method established in this study is sensitive and exact,and can be used to measure the pharmacokinetics of sodium new houttuyfonate in beagle dog.The sodium new houttuyfonate can metabolize quickly following intravenous injection.

Reversal effect of 4 alkaloids on apoptosis of being obtained multi-drug resistance to tumour cell / 中成药

AIM: To observe the relationship between the reversal effect of 4 alkaloids of TCM on expression of P170 being obtained multi-drug resistance to mouse S180 tumor cell induced by chemotherapy protocol of PFC and the adjustment of the cell apoptosis.And to discuss the difference among alkaloids of TCM on reversion of being obtained multi-drug resistance in clinic.To improve the curative effect thereby. METHODS: By the methods of less dosage of Chemotherapy PFC,to set up the mouse models of multi-drug resistance of S180 tumor cell.At the same time to give the mouse matrine,terandrine,oxymatrine and berberine hydrooh loride for 2 weeks and then to observe the P170,TOPOⅡ,Fas and apoposis by flow cytometry. RESULTS: Matrine and terandrine could obviously reduce the expression of P170,the activation of TOPOⅡ induced by Chemotherapy and increase the ratio of the express of Fas and the apopsis of drug resistance to tumor cell.And berberine hydrochloride could obviously reduce the expression of TOPOⅡ. CONCLUSION: The adjustment to the apoposis of tumor cell by matrine and terandrine is related to the reversion of being obtained multi-drug resistance to tumor cell' expression,besides the different degree