Objective: To establish a method for determining mycophenolic acid(MPA) and its glucuronide(MPAG) inhuman plasma. Methods: A high performance liquid chromatographic assay with diode array detection was developed, and thedetector wavelength was set at 254nm. The plasma sample purification was limited to protein precipitation with acetonitrile.The sample was separated on Hypersil ODS2 column (200 mm ?4. 6mm, 5?m), the mobile phase consisted of solution A(25% acetonitrile and 75% 0.02 mol/L KH2PO4,pH 3.0)and solution B(70% acetonitrile and 30% 0.02 mol/L K2HPO4,pH6.5)with gradient elution. The flow rate was 1. 0 ml/min. Results: Calibration curves of MPA and MPAG were linear be-tween 1. 0-5. 0 ?g/ml (r=0.994 4,n=6) and (2.5-100) ?g/ml (r= 0.999 5,n=7),respectively. The detection limit of MPAand MPAG were 0. 5?g/ml, and 1.0 ?g/ml, respectively. The mean recoveries of high, medium and low concentrations ofMPA were (95. 75?2.3l)%, (104.10?1.91) % and (98.11?4.24)%, and MPAG were (97.37?1. 43)%, (101.10?5. 41)%and (105. 44?7.59)%. Conclusion: The present study provides a reliable quantitative method for pharmacokineticstudy and monitor of MPA and MPAG.

This paper describes the relationship between standards and intellectual property rights,describes the importance of putting the intellectual property protection into the International standards of Chinese medicine by the examples.According to the Chinese medicine's own characteristics and actual conditions in our country,the author points out some suggestions on how to put the intellectual property protection into the International standards of Chinese medicine.

In this paper,we analyze the current situation of the national standardization on acupuncture needles and related patents.Through analyzing the international research focus on the acupuncture needle patents,we give some strategic suggestions on the intellectual property protection of acupuncture needles and traditional Chinese medicine.

The quantitative parameters based on dynamic contrast-enhanced MRI (DCE-MRI)scan,simulate the distribution of contrast inside and outside of the blood vessels through a variety of tracer kinetic models.The DCE-MRI perfusion parameters now are widely applied in clinical management of uterine tumors,to analyze the microcirculation characteristics in tumor and to guide the diagnosis,tumor grading and efficacy evaluation.

Objective To compare the test bolus technique with the bolus tracking technique for dual-energy CT pulmonary angiography in patients suspected of pulmonary embolism (PE).Methods A total of 60 patients were randomized into 2 groups:bolus tracking technique group (group B,n =30) and test bolus technique group (group T,n =30).A standard dual-energy CT pulmonary angiography (CTPA)was performed after injection of 60 ml contrast medium followed by 35ml saline chaser at a speed of 4 mL/s.Attenuation profiles of different vascular segments (the subclavian vein,superior vena cava,left atrium,pulmonary trunk,S1 and S10 pulmonary artery) and enhancement value of lung parenchyma were measured to evaluate the timing techniques.The overall image quality of CTPA and pulmonary perfusion were analyzed by two radiologists.SPSS 19.0,Student t test,ANOVA test,Chi-Square test,Mann-Whitney U test and Kappa test were used for the statistic analysis.Results The attenuation of the subclavian vein [(1042 ± 639),(2200 ± 724) HU,F =43.196,P =0.001],superior vena cava [(529 ± 237),(904 ± 329)HU,F=25.654,P=0.001],pulmonary trunk [(325 ±112),(383±69)HU,F=5.94,P=0.018],S1 pulmonary artery [(320 ± 118),(385 ±73) HU,F =6.549,P =0.013],S10 pulmonary artery [(307 ± 78),(360 ± 82) HU,F =6.658,P =0.012] in group B were lower than those in group T,while the attenuation of the left atrium in group B was higher than that in group T [(270 ± 53),(219 ± 57)HU,F=12.823,P =0.001].The percentage of pulmonary arteries exceeding optimal attenuation (＞ 250 HU) in groups B was lower than that in group T [n =21 (70.0％),n =29 (96.7％),x2 =5.88,P ＜ 0.05].The enhancement value of pulmonary parenchyma in group B was lower than that in group T (the right lung (29±8)vs(34±8) HU,t=-2.401,P=0.020; the left lung (30±7)vs(36±9)HU,t=-2.493,P=0.016; total (30 ±7)vs(35 ±8) HU,t =-2.495,P =0.016).The image quality of CTPA in group B was poorer than that in group T (U =619.5,P ＜ 0.05,Kappa =0.708),while the artifacts of lung perfusion image in group B was less than that in group T (U =162.5,P ＜ 0.05,Kappa =0.796).Conclusion The test bolus technique has a better image quality of CT pulmonary angiography and a higher lung perfusion blood volume compared with the bolus tracking technique by using 60 ml contrast medium and 35ml saline.

Objective To assess the virtual non-contrast liver CT from dual-energy CT for the clinical application. Methods In total, 51 patients were included in the study, and all patients underwent multi-phase liver CT on a dual-source CT. The True non-contrast liver CT (TNCT) was performed in a single-energy acquisition mode, but the arterial and portovenous liver CT (VNCT) were performed in a dual-energy mode of 110 kV and 140 kV respectively. The virtual non-contrast CT images were derived from the arterial data using liver virtual non-contrast software. Between the true non-contrast CT and the virtual non-contrast CT, the image quality, mean CT HU values in the liver and muscle, signal to noise (SNR), the radiation dose of volume CT dose index (CTDIvol) and dose length product (DLP) in a single phase and total examination were compared with t test. Results There was no significant difference in the detection of liver lesions between TNCT and VNCT. The CT Hu values of muscle on both TNCT and VNCT images were almost equal. The CT HU values of liver on VNCT images were higher than that on TNCT images and the difference was significant [61.32 ±6. 04 vs. (56. 85 ±4. 80) HU, t = -3. 927,P＜0.01]. There was also significant differenc of SNR between TNCT (11.28±2. 78) and VNCT (8.65 ± 1.56) images( t =-5.590,P＜0.01). The CTDIvol and DLP of single phase were (7.07 ±0.85) mGy and (155.11 ±respectively, but in TNCT the total CTDIvol and DLP reached (21.43 ± 2. 46 ) mGy and (469. 02 ±significance, but the total CTDIvol and DLP were significantly different (t = 16. 168 and 13. 132, P ＜0. 01). Conclusion With the consequent reduction in radiation dose, the VNCT can replace TNCT as an imaging protocol in multi-phase abdominal CT examination in clinic.

Objective To provide rationales for preventing and treating dyslipidemia by understanding the current status of lipids and related metabolic factors.Methods A total of 2 590 permanent residents aged ≥ 18 years were selected by random cluster sampling from three urbanized communities of Sijiqing Street.And the rate of abnormal lipid metabolism was calculated for different ages and genders.Spearman's correlation analyses were conducted for the levels of total cholesterol (TC),total triglyceride (TG),low density lipoprotein-cholesterol (LDL-C),high density lipoprotein-cholesterol (HDL-C),body mass index (BMI),waist circumference (WC),systolic blood pressure (SBP),diastolic blood pressure (DBP),fasting plasma glucose (FPG),glycated hemoglobin (HbA 1 c) and uric acid (UA) levels.Both x2 test and logisic regression were employed to examine the correlations between dyslipidemia and overweight/obesity,hypertension,hyperglycemia and hyperuricemia.Results ① The total rate of abnormal lipid metabolism was 60.0％ (1 554/2 590) with a standardized rate of 57.2％.High TC rate was 42.9％ (1 111/2 590) with a standardized rate of 40.5％.And the edge incremental rate was 31.7％ (822/ 2 590),the standardized rate 30.5％,the incremental rate 11.2％ (289/2 590) and the standardized rate 10.0％.High TG rate was 33.0％ (855/2 590) with a standardized rate of 30.7％.And the edge incremental rate was 15.3％ (397/2 590),the standardized rate 14.3％,the incremental rate 17.7％ (458/2 590) and the standardized rate 16.4％.High LDL-C rate was 30.4％ (787/2 590) with a standardized rate of 28.4％.And the edge incremental rate was 22.9％ (594/2 590),the standardized rate 21.7％,the incremental rate 7.5％ (193/2 590) and the standardized rate 6.7％.Low HDL-C rate was 12.6％ (327/2 590) with a standardized rate of 12.8％.The rates of high TC,high TG,high LDL-C,low HDL-C and abnormal lipid metabolism among gender showed no statistically significant difference (P ＞ 0.05);② For both males & females,high TC rate,high TG rate,high LDL-C rate and total rate of abnormal lipid metabolism increased with age (P ＜ 0.01) while low HDL-C rate did not change with age (P ＞ 0.05);③Spearman's correlation analysis showed that the levels of TC,TG and LDL-C were positively correlated with BMI,WC,SBP,DBP,FBG,HbA1C and UA (all P ＜0.01) while the level of HDL-C had negative correlations with BMI,WC,SBP,DBP,FBG,HbA1 c,and UA (all P ＜ 0.05);④The total rate of abnormal lipid metabolism and various types of abnormal lipid metabolism increased with a rising level of BMI in the upward trend (trend test P ＜ 0.01),various types of abnormal lipid metabolism rate between different groups (elevated & non-elevated) of blood pressure,glucose and uric acid also were statistically significant (all P ＜ 0.05);⑤ Non-conditional logistic regression analysis showed that,after adjusting for age and gender,overweight or obesity and hypertension were risk factors of high TC and high LDL-C;overweight or obesity,hyperuricemia was a risk factor for low HDL-C;overweight or obesity,hypertension,hyperglycemia and hyperuricemia were risk factors for high TG and total abnormal blood lipid.Conclusions Urbanized community groups have a high rate of dyslipidemia.And abnormal lipid metabolism is affected by overweight or obesity,hypertension,hyperglycemia and hyperuricemia.The target population should be regularly monitored and comprehensively controlled.

Transcatheter arterial chemoembolization (TACE) has been widely applied in palliative treatment of unresectable primary and metastatic liver cancer,and its efficiency and safety also have been widely acknowledged.However,there is a wide range of related complications,such as upper gastrointestinal hemorrhage,liver failure,pulmonary embolism,embolic cholecystitis and so on.As a serious complication of TACE,bile duct injury has been reported intermittently since the introduction of hepatic arterial embolization therapy.However,the exact pathogenesis,predisposing factors and clinical implications of the injuries remain to be clarified.As we find,by far there is no literature review about the bile duct injury after TACE for liver malignant tumors both at home and abroad.Thus the purpose of our study was to discuss such current issue of bile duct injury,and 26 articles have been included and analyzed.

Objective: To evaluate pharmacokinetic and pharmacodynamic of repaglinide tablets in Chinese subjects.Methods: Twenty healthy male volunteers were enrolled in the study. A single dose (4 mg) of repaglinide tablets was givenorally. Plasma concentrations of repaglinide were determined by HPLC method. Blood glucose and serum insulin leve1s weremeasured by biochemistry and radioimmunoassay methods respectively. Results: Plasma concentration-time curve conformedto one-compartment open model. The pharmacokinetic parameters were as follows: tmax (0. 75?0.43 ) h,cmax (54.44?24.97)ng/ml, t1/2 (0. 80?0. 31) h, MRT (1. 55?0. 41) h, C1/F (61. 43?20. 10) L/h and AUC (73. 34?29.95) h? ng/ml. Thelevel of serum insulin was raised and the level of blood glucose decreased after administration of repaglinide. The highest levelof serum insulin was (l26. 24?95.93) mU/L at 0.75h and blood glucose level reached its lowerest vaIue (2. 34I0.44) mmol/L 1 h after oral administration. Conclusion: Repaglinide is characterised by fast-acting and short effects on in-sulin secretion. It decreases serum glucose level by stimulating insulin secretion from the pancreatic ?-cells. It is a novel oralprandial glucose regulator for the treatment of type 2 diabetes mellitus.

AIM To research effects of sodium ferulate(SF) on transforming growth factor ?_1 inhibited hepatocyte growth. METHODS Human cultured hepatocytes(L02 cells) served as control group ,TGF?_1(5 ?g?L -1 ) was used to inhibited L02 cells to construct the cell model. MTT methods were used to study the growth inhibitory effect of TGF?_1 on L02 cells. DNA synthesis was analyzed by measuring 3H-TdR incorporation. The effects of SF on the changes of cell cycle were analyzed by flow cytometry. Generation of intracellular ROS was determined by the emission of fluorescence in L02 cells proloaded with DCFH-DA fluoresin and then treated them with TGF?_1 or SF. After 4h,control, TGF?_1 and TGF?_1+SF-treated cells were analyzed by flow cytometry. RESULTS ①Incubated in the presence of TGF?_1 for 24 h, 67.93% of L02 cells survived (P