Objective To explore the effect of c-Jun NH2-terminal kinase(JNK)signal transduction pathway on hyperoxia-induced lung injury in rats.Methods Twenty-four Wistar rats aged 3 weeks were randomly divided into 3 groups(n=8):room-air control group,7 d hyperoxia exposure group,and 7 d hyperoxia exposure with inhibitor of JNK intervention group.The rats in hyperoxia exposure group were exposed to high concentration of oxygen [fractional concentration of inspired oxygen(FiO2)≥950 mL?L-1] at normal pressure.The rats in room-air control group were placed in room air(FiO2=210 mL?L-1)at normal pressure.The rats in JNK inhibitor intervention group were intraperitoneally injected 30 mg?kg-1 SP600125 and exposed to hyperoxia 2 h later.The histopathological changes of lung tissues were observed by means of light microscope,therefore the changes of lung W/D weight ratio,total protein in bronchoalveolar lavage fluid(BALF)and lung permeation index were detected.The extent of lung cells apoptosis was analyzed by terminal deoxynucleotidyltrans-ferase-mediated dUTP nick end labeling assay.The protein level of p-JNK was measured by Western blotting analysis.Results Compared with room-air control group,conspicuous hyperaemia,edema,hemorrhage and extensive inflammation cells infiltration in the lung tissues were significantly observed in 7 d hyperoxia exposure group.The lung W/D weight ratio,total protein in BALF,lung permeation index,cell apoptotic index and the p-JNK protein levels of lung tissues all significantly increased in 7 d hyperoxia exposure group compared with those in room-air control group(Pa

Bacterial Infections ; epidemiology ; microbiology ; China ; Drug Resistance, Bacterial ; Humans ; Microbial Sensitivity Tests

Objective To observe the features of juvenile obesity and its effect on glycometabolism and lipid metabolism. Methods A total of 194 students aged from 12 to 18 were selected for our study. The assessment included serum lipid concentration, a 75 g OGTT and insulin releasing test. Blood glucose, insulin and the blood lipids were measured. Results Compared with the control group, blood pressure, serum Fins (fasting insulin) and Pins 2h (2-hour postprandial insulin) in the obesity group were higher and were statistically distinguished by the t-test (P

AIM: To study compatibility rationality of combination of Paeonia lacliflora and Glycyrrhiza uralensis. METHODS: The effective combination of paeoniflorin(44% purity),glycyrrhizic acid(50% purity) and liquorice flavones(52% purity),glycyrrhizic acid(50% purity) and liquorice flavones(52% purity) were respectively administered to rats.Pharmacokinetic change of these constituents in rat blood was studied. RESULTS: The pharmacokinetic parameters of these constituents in rat blood showed that the increases in AUC and C_(max) of effective combination group were more than that of glycyrrhizic acid group or that of liquorice flavones group.T_(max) of the former was extended with respect to the latters.Clearance of effective combination markedly slowed down. CONCLUSION: The effective combination of paeonia lacliflora and Glycyrrhiza uralensis have the advantage of either Paeonia lacliflora or Glycyrrhiza uralensis.

OBJECTIVE To analyze and evaluate the comsumption of the antibacterial drugs during surgery operation in our hospital objectively.METHODS To carry out statistical analysis of antibacterial drugs from May to Dec in 2007.RESULTS The 93 percent of preventive usage of antibacterial drugs were in 2 hours after operation.The most was cephalosporins.CONCLUSIONS It is important to enhance the education of rational use and supervision.

AIM: To explore the effect of drug content and encapsulated efficency of microsphere ophiopogon saponin preparation, providing more precise computational method. METHODS: Ophiopogon saponin enteric microsphere was prepared by spray drying technique, and the sum of saponin was determined by colorimetric analysis to evaluate the drug content and encapsulated efficency. RESULTS: The encapsulated efficency (%) was 94.75? 2.68. The drug content (mg/g) was 54.81? 2.12. CONCLUSION: The drug content the encapsulated efficency can affect the clinical dosage and the encapsulated efficency stands for the preparation process and the quality. So we should detect both drug content and the encapsulated efficency to evaluate preparation quality evaluation.

AIM: To determine the low content of Ophiopogon japonicus saponin metabolite in vivo. METHODS: HPLC-MS method of determining rat's metabolite diosgenin in vivo was established after single-dose oral Ophiopogon japonicus saponin enteric microsphere. RESULTS: The detection limit was about 50 ng/mL,Linearity,precision of intra and inter-day and reproducibility of the method were good. CONCLUSION: This method accords with the analysis requirement.It can give an effective measure and foundation for studying TCM saponin bioavailability.

AIM:To prepare ophiopogonin enteric microsphere and to carry out the comprehensive evaluation.METHODS:The microsphere was prepared by spray-drying technology,it was evaluated by common index、 enteric index and physical index.RESULTS:Yield was(81.7? 2.1)%,embedding ratio was(86.55? 0.86)%,drug loading was(23.1? 0.2)%.The drug released degree in artificial gastric juice within 2 hours was(9.18? 0.08)%.The drug released rate in artificial intestinal juice within 45 minutes was(73.79? 0.29)%.The equilibrium moisture content decreased from 12.9% to 5.8%.CONCLUSION:An comprehensive evaluation was established.

Objective To establish an HPLC method for the simultaneous determination of quercetin and kaempferol inKaempferia galanga L..Methods ODS2 C18 (5μm, 4.6 mm×150 mm) was used as chromatographic column; methanol-0.4% phosphate (47:53) was the mobile phase; the flow rate was 1 mL/min; column temperature was 30℃; the detection wavelength was 367 nm; the injection volume was 10μL.Results Quercetin showed good linear relationship in the range of 0.016 5–1.65μg (r=0.999 7). The average recovery rate was 96.8%, RSD=2.02%; kaempferol showed good linear relationship in the range of 0.014 6–1.46μg (r=0.999 5). The average recovery rate was 97.3%, RSD=1.77%.Conclusion The method is simple, accurate, and with good reproducibility, which can be used for content determination of quercetin and kaempferol inKaempferia galanga L..

Objective: To establish an HPLC method for the determination of coenzyme A in coenzyme complex for injection. Methods:The content determination was performed on an Intersil ODS-3 column with methanol-pH 6. 5 phosphate buffer solution (10∶90) as the mobile phase. The detection wavelength was 259 nm and the flow rate was 1. 0 ml·min-1 . The column temperature was 30℃ and the injection volume was 20 μl. Results:The linear range of coenzyme A was 1.624-32.482 u·ml-1(r=0.999 9). The average recovery was 102. 36% and RSD was 1. 14%(n=6). Conclusion: The method is simple, accurate and reproducible, and it can be used for the quality control of coenzyme complex for injection.