The tanshinone ⅡA,an effective component of Radix Salviae Miltiorrhizae(RSM)can be extracted up to 90% in alcohol,but mostly decomposed in the later concentrating and drying procedures.Although reducing-pressure concentrating processes can reduce the decomposi- tion in experiment,but it can not preserve effectively the tanshinone during the large scale production because of the extended time of tanshinone in dampness and heat.Supercritical carbon dioxide extraction(SFE-CO_2)of RSM can give crystalline substance and dark red modifier when the alcohol is used as modifier at extraction pressure of 10 Mpa and the tem- perature at 40℃.The SFE-CO_2 technology can get higher concentration of tanshinone and be used during preparation production directly.The SFE-CO_2 technology is superior to the alco- hol-extraction technology.

[Objective] To observe the effect of Pueraria Lobata isoflavones (PLI) on neuropeptide-Y-induced (NPY) vascular smooth muscle cell (VSMC) proliferation. [Methods] Experiment system for VSMC was set up as 4 groups: control group (with DME culture fluid, free of blood serum; group A), model group (with NPY culture fluid; group B), control + PLI group (with PLI culture fluid; group C) and model + PLI group (with NPY and PLI culture fluid; group E). Quantitative fluoroimmunohistochemistry techniques were applied to examine the mean fluorescent values of proliferating cell nuclear antigen (PCNA), platelet derived growth factor (PDGF) and C-myc expression. [Results] The levels of PCNA, PDGF and C-myc expression in model group were higher than control group (P

OBJECTIVE:To determine the contents of Icariin,Psoralen and Isopsoralen in Yishenling granule by HPLC. METHODS: The chromatographic separation was performed on Phenomenex luna C18 column (250 mm?4.6 mm, 5?m) with mobile phase consisted of acetonitrile-0.1% acetic acid solution (gradient elution) at a flow rate of 1.0 mL?min-1.The UV detection wavelength was set at 310 nm, and the column temperature was 20 ℃. RESULTS: Icariin,Psoralen and Isopsoralen in Yishenling granules were well-separated with good linearity within their respective concentration range. And the average recoveries for the three constituents were all within 99%～101% with RSD all less than 1.20%. CONCLUSION: The method is simple, feasible and reproducible, and it can be used for the quality control of Yishenling granule.

AIM: To investigate the effects of pueraria lobata isoflavones (PLIs) on neuropeptide-Y(NPY)-induced myocardiac cell hypertrophy in vitro. METHODS: Rat cardiomyocytes cultured in vitro were randomized to control, NPY, NPY+PLIs and PLIs group. The protein synthesis in cardiomyocytes was assessed by [~3H-Leu] uptake, C-jun mRNA by RT-PCR and CaN activity by histochemistry. RESULTS: The rate of [~3H-Leu] uptake, the C-jun mRNA expression and the CaN activity of myocardiac cells in 100 nmol/L NPY group were higher than those in control (P

Objective To establish a quality standard for Huangqin Zhengqi Capsules (HZC). Methods HZC was identified by TLC and HPLC and the effective components of HZC were determined by HPLC. Results The relevant spots in Cortex Magnoliae Officinalis and Herba Pogostemonis were identified by TLC, and the characteristic compounds of Rhizoma Atractylodis were identified by HPLC; the contents of hesperidin, baicalin, honokiol and magnolol could be determined by HPLC. Conclusion The quality standard is simple, feasible and repeatable, and can be used for quality supervisory and control in Huangqin Zhengqi Capsule.

[Objectivej To establish a gas chromatography (GC) method for the determination of the content of camphor, isoborneol and borneol in Anmo Ointment. [ Methods ] The determination was performed by programmed temperature GC, in which a 100% concentration of dimethylpolysiloxane was used as stationary liquid phase and the GC was equipped with FID detector at 300℃. [Results] The isolation and the linearity were fine with the rate of recovery of camphor 100.5% (RSD being 1.4%), isoborneol 99.1% (RSD being 1.8%) and borneol 100.8% (RSD being 1.3%). [Conclusion] This method is sensitive, rapid and accurate. It can be used to control the quality of Anmo Ointment.

Objective To establish the quality standard of Tiaojing Zhixue Granules.Methods Radix Astragali,Radix Paeononiae Alba,Herba Ecliptae and Fructus Psoraleae in Tiaojing Zhixue Granules were identified by TLC;Paeoniflorin content in Tiaojing Zhixue Granules was determined by HPLC.Results The relevant spots in Radix Astragali,Radix Paenoniae Alba,Herba Ecliptae and Fructus Psoraleae can be identified by TLC.The content of paeoniflorin in Radix Paenoniae Alba can be determined by HPLC.The linearity of paeoniflorin was good in the range of 0.0968 ~ 0.4838 ?g(r = 0.9999).The average recovery of paeoniflorin was 99.71 % with RSD = 1.33 %.Conclusion The established quality standard is simple,feasible and repeatable,and can be used for quality supervisory of Tiaojing Zhixue Granules.

The physicochemical environment and action are similar between the traditional decoction and the extract technics with water or alcohol in the production of Chinese patent drug. Different heating time inevitably differs Chinese patent drug from its decoction; and the alteration of extracting dissolvent make great changes in the chemical constitution. All these lead to the change in the nature of a Chinese patent drug. The authors hold that it is difficult to embody exactly the aim of the prescription of Chinese drug in the existing production technology of Chinese patent drug. It is necessary to advance innovative thoughts of adopting modern technology to extract effective ingredients from single Chinese drug and in the reference of traditional decoction, recombining the composition and dosage of Chinese patent drug.

Objective To evaluate the pharmacokinetic parameters and bioavailability of puerarin in Yufeng Ningxin tablets in mice by determining dose-time curve and by comparing with the pharmacokinetics of puerarin injection.Methods NIH mice were randomized into different groups. 6 %HClO4 was used to precipitate plasma protein and the plasma concentration of puerarin in mice was determined by HPLC.The PK solutions 2.0 program,a non-compartmental model software,was applied to calculate the pharmacokinetic parameters and bioavailability.Results The main pharmacokinetic parameters of puerarin injection by i.v.in mice were:t1/2=98.359 min,CL=35.548 mL?min-1,AUC(0-∞)=281.3 ?g?min?mL-1;the main pharmacokinetic parameters of puerarin in Yufeng Ningxin tablets by o.p.were:t1/2 =35.562 min,CL=898.685 mL?min-1,Cmax=9.3 ?g?mL-1,Tmax=30 min,AUC(0-∞)=222.5 ?g?min?mL-1 ,F(bioavailability value)=3.95 %comparing to puerarin injection.Conclusion As compared with puerarin injection,the absorptive content of puerarin in Yufeng Ningxin tablets is very poor and the bioavailability is also low,indicating that enhancement of bioavailability of Yufeng Ningxin tablets will be beneficial to the clinical application.

Objective The rational medication route of puerarin was explore d by studying the concentration- time curve and by comparing the histological and organic distribution difference of puerarin administered by intravenous injecti on or gastric gavage in mice, so as to supply a referential data for its rationa l application. Methods The NIH mice were used as experimental subject. The pu erarin concentrations in the plasma, tissue and organs at different time points were determined by HPLC. The PK solutions 2.0 program, a noncompartmental model software, was applied to calculate the pharmacokinetic parameters of puerarin an d to construct its plasma concentration- time curve. Results (1)The pharmacok inetic parameters of puerarin in mice were shown that the T1/2E of puerarin susp ension (0.2 mg? g- 1) by oral administration is 38.061min, CL =991.534 mL? mi n- 1, Cmax =3.6? g? mL- 1, Tmax =30 min, and AUC(0- ∞ ) =201.7? g? min? mL- 1, the bioavailability of puerarin suspension is 3.77 % compared to i.v puerarin injection. (2) Administered by intravenous injection (i.v), the puerari n distributed in the liver, kidney, plasma, spleen, muscle, lung, uterus and tes ticle rapidly, and the concentration of puerarin was the highest in the liver an d kidney and lower in the heart and brain. Distribution of puerarin suspension b y oral administration is similar to puerarin injection by i.v. However, the conc entration of puerarin in the tissues and organs by oral administration was lower than by i.v; the liver/heart, liver/brain, kidney/heart and kidney/brain concen tration ratios of puerarin by gavage administration were lower than those by i.v . Conclusion The bioavailability of puerarin by oral administration was poor, but the histological distribution characteristics of puerarin shows that the tox ic and side effects of puerarin are lesser by oral use than by intravenous injec tion.