OBJECTIVE: To establish a simple and sensitive method of high performance liquid chromatography - tandem mass spectrometry (HPLC-MS/MS) for the determination of glipizide in human plasma and to calculate the pharmacokinetic parameters and evaluate the bioequivalence of two glipizide preparations in healthy Chinese volunteers. METHODS: A two-periods, randomized, crossover trial design was used. Twenty-four subjects took the test and reference preparations at the dose of 5 mg, and glipizide plasma concentration was determined by HPLC-MS/MS. Pharmacokinetic parameters were calculated and bioequivalence was evaluated. RESULTS: The mean pharmacokinetic parameters of glipizide after adminstration of 5 mg of test or reference preparations were as follows: ρmax were (251.25±61.94) and (240.13±52.43) μg·L-1, t1/2 were (4.85±1.39) and (5.08±1.76) h, tmax were (3.35±1.22) and (3.38±1.35) h, and AUC0-tn were (1561.44±475.73) and (1588.82±507.40) μg·h·L-1, respectively. CONCLUSION: The HPLC-MS/MS method is sensitive and simple, and can be used for the determination of glipizide plasma concentration. Statistical analysis of the pharmacokinetic parameters in heathy subjects indicated that the two preparations of glipizide are bioequivalent.

Objective To assess boron intake through food and drinking water for the people living in the boron industrial area.Methods Workers from boron mining and processing plants were selected as the exposure group,the other workers from the area where was near to the boron industrial area were selected as the community control group and peoples from the area where was far from boron industrial area were selected as the background control group,all the subjects were healthy adult men,Jul.2003-Sep.2004.Total 24 h food and drinking water of the subjects were collected,the boron concentrations and daily boron intake were analyzed.Results Boron concentrations of drinking water for the workers from boron mining area,community control group and background control group were 2.05,0.86 and 0.05 mg/L respectively;the food boron concentrations of the three groups were 9.46,6.19 and 3.29 mg/kg(DW)respectively;and daily boron intake through food and water were 8.00,4.25 and 1.40 mg/d respectively.The workers drinking the water from the staff canteen well and having dinner in this canteen had 95.5-469 mg/d boron exposure through food and water with average of 219.0 mg/L which was much higher than that of the other people and even closed to the LOAEL(lowest observed adverse effect level)of animals.Conclusion The risk of boron exposure for workers from boron mining and processing area is much higher than that of the other people.

ObjectiveTo determine the bispectral index and dose of propofol at which 50 % of patients fall into unconsciousness during induction (BIS50 and EDs0 ). MethodsThirty unpremedicated ASA Ⅰ-Ⅱ patients scheduled for elective surgery were included in this study. The patients did not take any sedatives or hypnotics and had no psychiatric disease. Loss of consciousness and changes in BIS during induction with propofol were studied by sequential experimental method. The loss of responses to verbal command and eyelash stimulation was used as an induction of unconsciousness. The data obtained were analyzed by linear regression and calculated to determine BIS50 and ED50 using weighted averaging method. ResultsThe BIS50 and ED50 for propofol were 79.17 and 1.0192 ng/kg with the 95％ confidence intervals of 72.08-88.55 and 0.94-1.148 mg/kg respectively. Conclusions The sequential experimental method for determination of ED50 is simple, efficient and reliable and also suitable for determination of BIS50.

Lymphoma is a malignancy of mature lymphocytes. Signalling through the B cell receptor ( BCR ) is central to the development and maintenance of B cells. In light of the numer-ous proliferative and survival pathways activated downstream of the BCR, it comes as no surprise that malignant B cells would co-opt this receptor to promote their own growth and survival. Compounds that inhibit various components of this pathway, in-cluding spleen tyrosine kinase(Syk), Bruton’s tyrosine kinase (Btk), and phosphoinositol-3 kinase(PI3K), have been devel-oped. In this paper,the B-cell receptor signaling and its targeted inhibitors of lymphoid malignancies are reviewed.

Objective To analyze the clinical features in patients with primary cardiac tumors and surgical treatment of primary cardiac tumors.Methods A retrospective analysis of primary cardiac tumors patients from June 2002 to September 2012 was performed.79 patients were confirmed using cardiac echocardiography.Primary cardiac tumors were excised using general anesthesia during cardiopulmonary bypass.Results Only 5 patients relapsed after the follow-up for 6 months to 5 years.No tumor recurrence and distant metastases were found in the other patients.Conclusion Left atrial myxoma should be removed by surgical resection as soon as possible once there is a clear diagnosis.The surgical effect of left atrial myxoma is good but it may relapse.The malignant cardiac tumors progress rapidly and should be removed by early surgery combined with comprehensive treatment to improve the prognosis.

OBJECTIVE:To assay serum berberine in Puerariae and Scutellariae and Coptidis Decoction and coptidis rhi?zoma single decoction in dog and to analyze the effect of the compound recipe(whole recipe)on the physiological disposition of beberine.METHODS:Serum concentrations of berberine in dog were determined at different time by HPLC and the phar?macokinetic parameters were computed with WinNonlin software.RESULTS:The concentration-time curves of berberine in Puerariae and Scutellariae and Coptidis Decoction and coptidis rhizoma single decoction in vivo of dog conformed to one-compartment model,the main pharmacokinetic parameters of berberine in Puerariae and Scutellariae and Coptidis Decoction vs.in coptidis rhizoma single decoction were as follows,AUC (0-∞) (1.25?0.06)vs.(14.71?0.54)(?g?h)/ml,t max (1.92?0.31)vs.(3.03?0.07)h,C max (0.17?0.01)vs.(1.79?0.03)?g/ml.CONCLUSIONS:As compared with single-item recipe,the plasma concentration and bioavailability of berberine in the compound recipe of Puerariae and Scutellariae and Coptidis Decoc?tion were all lower.

Adolescent ; Adult ; Aged ; China ; epidemiology ; Dust ; Female ; Humans ; Lung Diseases ; epidemiology ; prevention & control ; Male ; Middle Aged ; Occupational Diseases ; epidemiology ; prevention & control ; Pneumoconiosis ; prevention & control ; Young Adult

Adolescent ; Adult ; Aged ; China ; epidemiology ; Female ; Humans ; Male ; Middle Aged ; Occupational Diseases ; epidemiology ; Young Adult

Objective To review our clinical experience with primary surgical repair of tetralogy of Fallot in neonates and premature infants and to discuss the timing of repair and major factors in treating this patients perioperatively.Methods From January 2012 to September 2015,a series of 19 consecutive neonates and premature infants(M/F =12/7) with tetralogy of Fallot were admitted in our center to receive surgical treatment,with a mean age of(17.3 ± 5.5) days(12-28 days) and a mean body weight of(2.9 ±0.7) kg(2.1-4.3 kg).All the 19 cases were symptomatic with cyanosis,saturation on room air 0.79 ± 0.12 (0.48-0.92),and shortness of breath.Before operation,2 cases were receiving an infusion of prostaglandin E1,5 were mechanically ventilated.7 were more than moderate anemia with hemoglobin of 55-87 g/L.All the patients received echocardiography,ECG and chest X-ray.The McGoon ratio and Nakata index were 1.09 ± 0.30 (0.8 to 1.6) and (135.5 ± 54.2) mm2/m2 (63-212 mm2/m2) respectively.18 cases received one-stage surgical repair and 1 premature infant under two-stage operation with the VSD closure after right ventricular outflow tract(RVOT) transannular patch augmentation.All the VSDs in the 18 cases were closed with continuous suture and RVOT were enlarged with autologous pericardium patch transannularly or not.Balanced and modified ultrafiltration were applied in all the patients.Patients were strictly followed up with a standard protocol focusing on right ventricular function and arrythmia.Several characteristics(e.g.time of operating,mechanical ventilation and ICU stay,complications,hospital stay time,cost of hospitalization) were compared between this group of patients and other TOF patients during the same period in our center.Results All the one-stage operations were successful.There was no mortality and major complication.Mean CPB and aortic clamping time were(111.5 ± 31.6)min (76-153min) and (73.3 ± 11.6) min (64-89 min) respectively.10 VSDs were closed with transventricular approach,6 witht transatrial appraoch and 2 with transatrial-ventricular approach.12 cases (66.7 ％) had a transannular RVOT patch,4 (22.2 ％) with single RVOT patch and 2 (11.1％) with transannular RVOT and left pulmonary artery patch.Atrial communication were left open in 15 cases (83.3 ％).The time of mechincal ventilation and ICU stay were (123.7 ± 59.5) h (39-239 h) and (10.1 ± 3.2) days (5-19 days) respectively.All the patients were followed up for (31.8 ± 15.7) months (9-57 months).There was no mortality and major complication.ECG showed that there was no severe arrythmia except for 3 complete right branh bundle block.The latest echocardiography results showed that right heart function was normal in all the cases and RVOT grandients was less than 30mmHg except one with 35 mmHg.There were 2 cases with residual shunt less than 2 mm and 8 cases with pulmonary valvular regurgitation less than moderate degree.Compared with other TOF cases during the same period,there was no difference according to the data mentioned above except with more time of mechnical ventilation and ICU stay and more cost of hospitalization.Conclusion Primary repair of TOF can be performed safely in symptomatic neonates and premature infants,regardless of age and body weight,with favorable early and mid-term results.Excellent teamwork and accurate prenatal and postnatal diagnosis were the two major factors in yeilding good results in these patients.

Objective To compare clinical outcome and adverse reactions between the regimens SOX and XELOX for chemotherapy of advanced gastric carcinoma in Chinese population.Methods The original articles on randomized controlled trials ( RCTs) comparing the chemotherapy of SOX and XELOX in Chinese patients with advanced gastric carcinoma were recruited from the PUBMED, WANFANG, VIP and CNKI databases.The quality of the selected trials were assessed by JADAD method.Meta-analysis about the efficacy and safety of the two chemotherapy methods was performed by Rev Man 5.2.0 software ( Cochrane-information Management System) .Results Eight RCT studies were recruited in our work, including 293 patients in the SOX treatment group and 310 in the XELOX treatment group.The analysis results showed that there was no significant difference in the effect of the two chemotherapy methods (OR=1.19, 95%CI:0.86-1.64,P=0.29), and referred to the safety evaluation, the stomatitis (OR=2.29, 95%CI:1.74-4.89, P<0.0001) incidence in SOX treatment group was higher than XELOX treatment group, and in total, there was no significant difference in adverse reaction incidence of the two chemotherapy methods(OR =0.88, 95%CI: 0.66-1.19, P =0.41).Conclusion In the chemotherapy of advanced gastric carcinoma in Chinese population, there is no significant difference in clinical response rate between SOX and XELOX, and the stomatitis incidence of SOX is significantly higher than that of XELOX.