ABSTRACT
This study was aimed to analyze and compare liposoluble constituents and their inhibitory effects on H22 hepatoma carcinoma cells in mice of Aquilaria sinensis seeds from different extraction ways.Liposoluble constituents from A.sinensis seeds were extracted by steam distillation (SD),accelerated solvent extraction (ASE),petroleum ether (PE),soxhlet extraction (SE) and physical squeeze (PS).And then,GC-MS was used to analyze and define the constituents.Meanwhile,MTT assay was used to inv estigate the inhibitory effect of liposoluble extracts on the H22 hepatoma carcinoma cells.The results showed that the yield of liposoluble extracts from A.sinensis seeds by SE and SD was the most.There were seven major components,which were saturated fatty acids,unsaturated fatty acids,esters,alkanes,olefins,aldehydes and alcohols.The yield rates were 48.88％ and 0.0096％,respectively.The liposoluble extracts from A.sinensis seeds by PE were five types,which contained unsaturated fatty acids,esters,alkanes,olefins and aldehydes,with the yield rate of 36.31％.The liposoluble extracts obtained from rapid solvent extraction included four components,which were saturated fatty acids,unsaturated fatty acids,esters and olefins.The extraction rate was 37.36％.PS contained only three constituents,which were saturated fatty acids,unsaturated fatty acids and alkenes.The extraction rate was 40.12％.The inhibitory effect of 1 mg·mL-1 liposoluble extract on the proliferation of H22 hepatoma carcinoma cells was ASE-E ＞ SE-E ＞ PS-E ＞ SD-E ＞ PE-E.It was concluded that different extraction methods had different effects on the constituents of liposoluble extracts from A.sinensis seeds.The liposoluble extracts of A.sinensis seeds have inhibitory effects on hepatoma carcinoma cells.It provided a new way for the using of A.sinensis seeds and anti-hepatoma drug development.
ABSTRACT
OBJECTIVE:To establish an HPLC method for the determination of the concentration of tetrahydropalmatine in Puyuan weikang capsule. METHODS: The HPLC separation was performed on Venusil XBP-C18 chromatographic column (150 mm?6.0 mm, 5 ?m) with mobile phase consisted of methanol-0.1% phosphoric acid solution(60∶40, with pH adjusted to 6.0 using triethylamine) with a flow rate of 1 mL?min-1. The detective wavelength was set at 280 nm and the column temperature was set at 25 ℃. RESULTS: The linear range of tetrahydropalmatine was 2.5～100 ?g?mL-1 (r=0.999 6) and the recovery rate was 94.33%(RSD=1.11%,n=6). CONCLUSION: The method developed in the study was proved to be simple, rapid and accurate, and applicable for the quality control of Puyuan weikang capsule.
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OBJECTIVE:To discuss the influence of drug price reduction and regulation of purchase on the use of anti-infectives in our hospital.METHODS:The use of anti-infectives in5times of drug price reduction was retrospective anal?ysed.RESULTS:The proportion of the sum of money for consumption of anti-infectives in the total sum for drug consumption dropped year by year but the total DDDc of anti-infectives increased year by year.The DDDs and the total DDDc of all kinds of anti-infectives showed different characteristics.CONCLUSION:The macroscopic price reduction for anti-infectives posi?tively affects the rational use of anti-infectives,yet the effect is limited.Microcosmic regulation of purchase offers an indis?pensable effect.
ABSTRACT
Polyunsaturated fatty acids (PUFA) was a functional component extracted from fish oil. The experiment results indicate that PUFA might inhibit platelet agglomeration induced by Adenosine diphosphate (ADP) in rabbit and rat. The results also suggested that PUFA has extent effect of anti-coagulation in mice. These effects are related with dosage of giving drug.
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Objective To investigate the antimicrobial susceptibility of spectinomycin?minocycline?azithromycin and sparfloxacin to mycoplasma(Uu and Mh)and therapeutic effect of spectinomycin to my-coplasma infection in genitourinary tract.Methods①The susceptibility test:each of the4drugs was divided into two concentrations.One was at1?g/mL(sensitive concentration)and the other was at4?g/mL(resistant concentration).If mycoplasma does not grow in both concentrations,it means the drug tested is sensitive.If it grows in both concentrations,the drug tested is resistant.If mycoplasma grows in lower concentration and does not in higher concentration,it means moderate sensitive.②Treatment regimen:Spectinomycin was injected,2g/d IM,for7-10days as a course of treatmeant.Patients were followed-up7days later and2~4weeks after treatment.Results①Among1658specimens,519were found Uu positive,and61Mh positive.The resis-tance rates of Uu to4different drugs were:7.7%for minocycline,21.4%for sparfloxacin,13.9%for azithromycin and7.3%for spectinomycin.Whereas,those of Mh were:18.0%,45.9%,54.1%,and29.5%re-spectively.②The clinical effect of spectinomycin was:out of43treated patients,37(86.0%)cured,4(9.3%)markedly improved,2(4.7%)failed.Total effective rate was95.3%and so was the elimination rate of my-coplasma.Conclusion The resistant rate of mycoplasma to spectinomycin is lower than that to minocycline?azithromycin and sparfloxacin,and the former is widely used in the treatment of mycoplasma(especially Uu)infection,with a satisfactory clinical effect.
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OBJECTIVE:To evaluate the bioavailability of domestic propylthiouracil enteric coated capsule.METHODS:A modified RP-HPLC assay was used for determination of the plasma drug concentrations.In a randomized two-way crossover design,a single oral dose of100mg domestic propylthiouracil capsule(trial agent,A)and imported propyithiouracil tablet(reference agent,B)were given to20male healthy volunteers.The parameters were fitted by CRFB bioavailaility soft?ware.RESULTS:The AUC 0～t ,C max and t max of A and B were(9.13?1.53)and(8.80?1.37)(?g?h)/ml,(3.02?0.71)and(3.03?0.66)?g/ml,(4.51?0.24)and(1.13?0.44)h respectively.There were no significant differences in parameters between2groups.The relative bioavailability of product A was(104.37?12.16)%.CONCLUSION:The results suggest that these two products were bioequivalent.