On isolated rabbit portal vein preparations, silybin shifted the cumulative concentration-response curves for NA, KCl, and CaCl2 to right, and depressed their maximal responses with an IC60 of 0.04, 0.43, and 0.07 mmol/L, respectively. On thoracic aorta, the cumulative concentration-responses induced by KCl and CaCl2 were inhibited by silybin with an IC50 of 41.4 and 1.4 mmol/L,respectively, whereas the NA induced responses were not affected. The results suggest that silybin may have a weak calcium antagonistic effect, especially on portal vein.

Objective To explore the protective effects of puerarin on CCl 4-induced acute hepatic injury of rats. Methods Acute hepatic injury model was induced by CCl 4. Before and after low-dose (40 mg/kg) or high-dose (200 mg/kg) of puerarin was given, the levels of AST, ALT in serum, and liver index, and SOD activity, MDA content in serum and liver tissue were measured. Liver pathological changes were also observed. Results Puerarin reduced the serum levels of AST, ALT obviously (P

OBJECTIVE:To establish a RP-HPLC method for determination of the content of hesperidin in weisu gran?ules.METHODS:Symmetry C 18 (150mm?3.9mm,5?m)column;acetonitrile-water(19.5∶80.5),water containing phosphoric acid(800∶0.1)as mobile phase and detection wavelength was284nm.RESULTS:The calibration curve was linear in sample size range of hesperidin of0.0228?g～0.1596?g(r=0.9996).The average recovery was97.2%(RSD=1.1%,n=6).CONCLU_ SION:The method was simple and accurate,and can be used for quality control of weisu granules.

OBJECTIVE:To establish the quality control method for fugankang granules.METHODS:Radix Astragali,Atr actylodes Macrocephala,Pericarpium Citri Reticulatae in fugankang granules were identified by TLC and the content of astra?galoside in fugankang granules was determined by HPLC-ELSD method.RESULTS:Radix Astragali,Atractylodes Macro?cephala,Pericarpium Citri Reticulatae could be identified by TLC;Astragaloside showed good linear relationship within the range of1.306?g～13.060?g(r=0.9997),the average recovery was 97.62%(RSD=1.72%).CONCLUSION:The method is simple,accurate and with good reproducibility,which can be used as quality control for fugankang granules.

OBJECTIVE:HPLC method was established for the determination of dehydroepiandrosterone(DHEA)in tablets.METHODS:The chromatographic system consisted of ?-Bondapak C18 column and mobile phase of methanol-water(75∶25)with a detection wavelength at 292nm.RESULTS:The linear range of DHEA was 0.2～1.0mg/ml,r=0.9 999.The recovery rate was 99.13%(RSD=0.42%).CONCLUSION:This method is simple and accurate for determination of DHEA in tablets.

OBJECTIVE:To explore the role of clinical pharmacists in the clinical nutrition therapy for patients with parenteral nutrition-associated liver dagame (PNALD),and to promote the rational use of nutrition drugs. METHODS:Clinical pharmacists participated in the treatment of a case of PNALD,and suggested adjusting 5% Glucose and sodium chloride injection 500 mL to 0.9% Sodium chloride injection 500 mL,30% Long-chain triglycerides 250 mL to 20% Medium/long chain fatty emulsion 250 mL,8.5% Compound amino acid injection(18 AA)1000 mL to 8% Compound amino acid injection(15 AA)750 mL;addition-ally using 20%Alanyl glutamine injection 100 mL and 10% ω-3 Fish oil fat emulsion injection 100 mL inall in oneparenteral nutrition(PN)formula. The remaining recipes remain unchanged. Reduced glutathione and S-methionine were also adopted for pro-tecting liver and receding jaundice,and the amount of PN was decreased gradually and replaced by enteral nutrition (EN). RE-SULTS:Physicians adopted the suggestions of clinical pharmacists,and liver function of the patient recovered to normal. CON-CLUSIONS:Main factors of PNALD include medication time of PN,types and intake of lipid,over nutrition. Clinical pharmacists provide pharmaceutical care in nutritional treatment for patients,which can assure effective and safe use of nutritional drugs,and reduce the occurrence of complication and ADR.

Aim To observe the protective effects and explore the possible mechanism of lycopene on hepatic injury induced by the combining use of isoniazid(INH) and rifampicin(RFP) in rats.Methods Chronic hepatic injury model was induced by INH and RFP.Low dosage,middle dosage and high dosage of lycopene(10,20,30 mg?kg-1 body weight) were given to protect liver injury.The serum level of AST and ALT,liver index,contents of malondialdehyde(MDA),glutathion(GSH) and superoxide dismutase(SOD) in liver were measured.Hepatic pathological changes were also observed after giving lycopene.Results Lycopene could reduce the liver index,the serum level of AST and ALT and the content of MDA,raise the liver GSH content and promote the activities of SOD in liver tissue in rats.Degeneration and necrosis of liver tissues were relieved.Conclusion Lycopene has protective effects on the hepatotoxicity in rats induced by the combination of INH and RFP for a long time,and the mechanisms is related to of antioxidation action of lycopene possibly.

Objective To identify the function and mechanism of MR1 in proliferation of BEL-7402 cells.Methods siRNA targeting MR1 and negative control siRNA were synthesized and transfected into BEL-7402 cells using Lipofectamine 2000.The silencing effect of MR1 siRNA was determined by semi-RT-PCR.SRB assay,colony formation assay and growth curve assay were used to investigate whether MR1 siRNA regulated cellular proliferation.Cell cycles were assessed by flow cytometry.G2 arrest reagent nocodazole was used to show the potential effect of MR1 siRNA on G1 arrest.The expression of Cyclin D1 was determined by Western blotting.Results(1)MR1 mRNA significantly decreased in BEL-7402 cells 24 h after MR1 siRNA transfection.(2)MR1 siRNA induced the down-regulation of cell growth.The expression of Cyclin D1 in MR1 siRNA tranfected BEL-7402 cells decreased significantly.(3)Flow cytometry results showed that MR1 siRNA markedly decreased G2 phase population with nocodazole treatment,and distinctly increased G1 phase population.Conclusion The gene MR1 is involved in the proliferation of BEL-7402 cells.MR1 siRNA causes inhibition of the proliferation of BEL-7402 cells.One of the mechanisms ofMR1 siRNA on the proliferation of BEL-7402 cells is the induction of G1 arrest.

BACKGROUND:The differentiation of mesenchymal stem cells(MSCs)is strictly regulated by both genetic and epigenetic Factors .Emerging evidences have demonstrated that microRNA also plays an important role in this process.OBJECTIVE:To explore the differential expression of microRNA-125b during neuronal dliferentiation of Flk1~+ adipose-derived MSCs(AD-MSCs).MATERIALS:The fat samples were provided bv healthy female volunteers aged 15-35 years and recruited from the Plastic Surgery Hospital affiliated to the Chinese Academy of Medical Sciences.METHODS:Adult adipose tissues were obtained from healthy voluntears with age of 15-35 years .Using adherence method,Flk1~+ MSCs were obtained and the 3~(rd) passage cells were taken in the experiment.Cultured in neuronalinduction medium.these MSC were induced to differentiate towards neuronal lineage.The expression of microRNA-125b was examined at days 0,4,8 and 12.To explore its role in neuronal differentiation,we need to change its expression.RT-PCR and Taqman real-time PCR were carried out to explore the difierentially expression of microRNA-125b during neuronal differentiation of AD-MSCs.The effect of inhibitor on the expression of microRNA-125b was detected.RESULTS AND CONCLUTION:①The Flk-1~+MSCs were successfully induced into neuronal differentiation and displayed typical morphological changes 12 days after induction:Most cells retracted their cytoplasm ,fomling spherical cell body and emitted cellular protrusions.RT-PCR and immunocytochemistry studies confirmed their phenotype with expression of known neuronal cell markers including neurofilament,glial fibrillary acidic protein.②The expression of microRNA-125b was significant up-regulated during neuronal differentiation .Results of RT-PCR and Taqman real-time PCR were concordarlce with that of microRNA chip technology.③Inhibitor could down-regulate microRNA-125b.The results implied that microRNA-125b may play an important role in neuronal differentiation.

OBJECTIVE:To establish the preparation process and method of quality control of econazole nitrate ear-drops.METHODS:With mixture of glycerin and 75% alcohol as solvent,econazole nitrate ear-drops was prepared and the content of econazole was determined by ultraviolet spectrophotometry.The stability,irritation and in vitro antimicrobial tests were carried out.RESULTS:There was a good linearity of calibration curve of econazole in range of 200～600?g/ml,r=0.9 999,the average recovery was 100.76%,RSD=0.82%(n=5).The in vitro antimycotic MICs of econazole nitrate in ear-drops were 2?g/ml and 4?g/ml against standard and clinically isolated strains of Candida albicans respectively.CONCLUSION:The ear-drops is simple in preparation,effective in antimycotic action,good in stability and slight in irritability,and the method of quality control is simple,rapid and accurate.