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.

Actins ; metabolism ; Calcium-Binding Proteins ; metabolism ; Calmodulin-Binding Proteins ; metabolism ; Desmin ; metabolism ; Diagnosis, Differential ; Female ; Humans ; Hysterectomy ; Leiomyoma, Epithelioid ; metabolism ; pathology ; Leiomyomatosis ; metabolism ; pathology ; surgery ; Leiomyosarcoma ; pathology ; Microfilament Proteins ; metabolism ; Middle Aged ; Receptors, Estrogen ; metabolism ; Receptors, Progesterone ; metabolism ; Rhabdoid Tumor ; metabolism ; pathology ; surgery ; Sarcoma, Endometrial Stromal ; metabolism ; pathology ; Uterine Neoplasms ; metabolism ; pathology ; surgery ; Vascular Neoplasms ; metabolism ; pathology ; surgery ; Veins ; pathology ; Vimentin ; metabolism

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

Objective To evaluate the long-term efficacy and the influencing factors of biofeedback (BF) treatment in functional constipation (FC).Methods Totally 120 BF treated FC patients were retrospectively followed up.The clinical symptom score,the use of laxatives,the result of colonic transit test and anorectal manometry were compared before BF treatment and during follow-up.The long-term efficacy of biofeedback treatment was evaluated.Thirty-two possible influencing factors of long-term efficacy were selected and univariate and multivariate analysis were conducted.The groups were compared with t test,rank-sum test and x2 test.The influencing factors of long-term efficacy were analyzed with a stepwise multiple regression analysis.Results The median score of clinical symptoms in follow-up period (3) was significantly lower than that before BF treatment (10,Z=-7.900,P＜0.01).The total long-term efficacy rate was 70.6％ (77/109).During follow-up,the rate of laxatives use [39.4 ％ (43/109)] was lower than that before BF treatment [83.5％ (91/109),x2 =44.623,P＜0.01].During follow-up,the 48 hour median colonic emptying rate (30.0％)was higher than that before BF treatment (0,Z=-2.298,P=0.022).During follow-up,the proportion of patients with uncoordinated defecation (51.4％) was lower than that before BF treatment (77.1％,x2 =5.040,P=0.025).The results of univariate and multivariate analysis showed that the long-term efficacy of BF treatment was positively correlated with the compliance for home training and utilization of social support,negatively correlated with the course of disease.Conclusions BF therapy can improve clinical symptoms of FC patients,correct physiological dysfunction and have a satisfactory lon~term efficacy.Compliance for home training,utilization of social support and the course of disease were independent influencing factors.

Objective To detect circulating antigen (Cag) for diagnosing neurocysticercosis. Method ELISA was performed with monoclonal antibody 4B6 against the cyst fluid antigen of Cyticercus cellulosae for detecting Cag in serum and/or cerebrospinal fluid (CSF) of patients with neurocysticercosis or with other diseases. Results In the group of 82 cases of neurocysticercosis, the positive rate of serum Cag was 79.2% (65/82) and the positive rate of CSF Cag was 100% (26/26). After chemotherapy for 20 cases with positive serum Cag, the titer of serum Cag in 17 cases dropped to zero(85% ). Cag could not be detected in specimens from patients with other diseases. Conclusion These results indicate that the determination of Cag, especially of the CSF Cag, is useful for the diagnosis of neurocysticercosis and the drop in serum Cag is a good parameter for the evaluation of the effectiveness of chemotherapy.

Objective To investigate the effects of desflurane on the delayed rectifier potassium current (Ik ) in acutely dissociated rat parietal cortical neurons. Methods Wistar rats between 10- and 14-day old of both sexes were used. The parietal cortical neurons were acutely dissociated enzymatically. The extracellular fluid saturated with 0.3,0.6 and 0.9 mmol/L desflurane was added to the culture dish, then the effects of different concentrations of desflurane on Ik were investigated by using the whole-cell patch-clamp technique in acutely dissociated rat parietal cortical neurons. Results IK was inhibited by desflurane in a concentration-dependent manner ( P ＜0.01). The V1/2 of the activation and inactivation curves and the slop factor had no change after giving 0.6 mmol/L desflurane (P ＞ 0.05). Conclusion Desflurane inhibits delayed rectifier potassium channels of parietal cortical neurons of rats in a concentration-dependent manner, and has no effect on the activation and inactivation of delayed rectifier potassium channels, indicating that the change in the excitability of the channel is not involved in the mechanism of inhibitory effect of desflurane, and the other reasons may be involved in the mechanism.

Objective：To evaluate bioequivalence and relative bioavailability of domestic and imported repaglinide tablets in healthy volunteers. Methods： Twenty two healthy male volunteers were randomized into A and B groups. A single dose (4 mg) of domestic and imported repaglinide tablets were given respectively according to an open 2-way crossover study design. The washout period was 1 week. Plasma concentrations of repaglinide were determined by HPLC method. Results：The pharmacokinetic parameters of domestic and imported drugs were as follows: t1/2 were(0.86±0.24) and (0.83±0.31) h；tmax were( 0.79±0.37) and (0.75±0.41) h；cmax were (52.43±20.92) and (53.32±24.94) μg/L. AUC0-t were (79.87±36.48) and (74.95±30.57) μg*h*L-1，respectively. The relative bioavailability of domestic formulation was (106.55±16.15)%. Conclusion： The results of variance analysis and two one-side t test show that 2 formulations are of bioequivalence.

Objective To evaluate the effectiveness and safety of varicella attenuated live vaccine ( VarV) produced by A Co. Ltd. Methods We selected 3 provinces in China and enrolled 15 002 children aged 3-<11 in this random, multicenter study. Participants were randomly divided into two groups: the ex-perimental group and the control group. Every varicella case was collected and recorded to calculate the vac-cine efficacy. Vaccine safety was assessed by means of spontaneous report and regular follow-up visits. Re-sults During the observation period, the incidence of varicella was 0. 147% in the experimental group and 1. 155% in the control group (P<0. 001). The vaccine efficacy was 87. 27%. The adverse reaction rate af-ter vaccination was lower than the rates reported in other literatures. Conclusion The VarV produced by A Co. , Ltd. in China was effective and safe in preventing varicella.

OBJECTIVETo determine the cause of acute poisoning occurred in a factory in Yangjiang city, Guangdong province.

METHODSIn a cross-sectional study, interviews were conducted with the administrators of the factory and the local physician. A review was conducted on the water system used for industrial purposes and a separate system used by workers for drinking water. Treatment and discharge of industrial waste water were examined. Face-to-face interview was conducted to identify risk of exposure for illness among workers.

RESULTSA total number of 36 cases were identified in the plant and the attack rate was 16.4% (36/220). The incubation period (time between drinking polluted water and the onset of symptoms) had a median of 90 minutes (range: 30 - 230 minutes). Consuming water at the factory increased the attack rate and a dose-response effect was identified (chi(2)(trend) = 79.115, P < 0.01). The nitrite content of residuals in drinking water exceeded the WHO standard (1 ppm).

CONCLUSIONSThe accident of acute poisoning was due to drinking water contaminated with sodium nitrite. The prevention of drinking water contaminated by toxic chemicals like sodium nitrite, and the design of industrial and potable water supply system need to be carefully reviewed. Regulations should be developed and enforced to minimize the impact of industrial waste water discharges to guarantee the access to clean drinking water.

Acute Disease ; Adolescent ; Adult ; Female ; Humans ; Industrial Waste ; Male ; Middle Aged ; Nitrites ; poisoning ; Water Pollutants, Chemical ; poisoning ; Water Supply ; analysis