Objective:To establish a method for detecting the content of vitamin B2 in Weimeisu tablets by HPLC-FLD. Methods:A PAK C18(250 mmID × 4. 6 mm,5 μm) column was employed with methanol -0. 02 mol·L-1 ammonium acetate (35∶65) as the mobile phase, the flow rate was 1. 0 ml·min-1, and the injection volume was 10 μl. The detection wavelength λex and λem were 450mn and 522 mn, respectively. Results:Vitamin B2 was linear within the range of 1.0-20 μg·ml-1(r=0.999 9). The average recovery was 99. 20%(RSD=0. 63%, n=6). Conclusion:The method is specific, sensitive and accurate, and can be used to deter-mine vitamin B2 in Weimeisu tablets.

As an important part in hospital quality management,medical metrology management is a technical support and necessary means for medical quality.Four aspects such as reinforcement of organization,rules,basic construction and exertion of function are discussed.It is impsrtant and esstntial to strengthen medical metrology.[Chinese Medical Equipment Journal,2008,29(2):107,109]

Objective To construct a simultaneous HPLC-UV dual wavelength spectrometry method for detecting three main contents - harpagide, harpagoside and cinnamic acid in Scrophulariae Radix dispensing particles. Methods Ultimate AQ-C18 column (250 mm×4.6 mm, 5μm) was used, with 1%acetic acid solution and acetonitrile as mobile phase of gradient elution. The flow rate was 1.0 mL/min, detection wavelength was 210 nm at former 13 min and 278 nm after 13 min. The column temperature was 30 ℃. Results The linear range of harpagide, harpagoside and cinnamic acid was 0.066 54-0.665 4 μg (r=1.000 0), 0.024 23-0.242 3 μg (r=0.999 9), and 0.100 28-1.002 8 μg (r=0.999 9), respectively. The average recovery (n=6) was 99.80%±1.22%, 100.31%±1.30% and 100.22%±1.24%, respectively. Conclusion The method is simple, repeatable, stable, and can be used for quality control and standardization of Scrophulariae Radix dispensing particles.

Objective To evaluate the efficacy of aerosol inhalation ofXiyanpingversus ribavirin for the treatment of respiratory tract infections in children.MethodsPubMed, Embase, Cochrane database of Systematic Reviews, CNKI, cqvip and wanfangdata were searched. The randomized controlled trials(RCTs) of aerosol inhalation ofXiyanpingversus ribavirin injections for the treatment of respiratory tract infections in children were incuded. The quality of trials was evaluated and data analyses were performed with the Cochrane Collaboration’s software RevMan 5.0.Results A total of 7 trials were included, involving 857 patients(437 treated withXiyanping, 420 treated with ribavirin). Both of the clinical cure rate(50.11%vs. 40.71%) and clinical effective rate(91.08%vs. 75.95%) in theXiyanping group were significantly higher than those in the ribavirin group, withOR(95%CI) 1.49(1.13 to 1.97) and 3.54(1.87 to 6.71), respectively.Conclusions Aerosol inhalation ofXiyanping superior to aerosol inhalation of ribavirin for the treatment of respiratory tract infections in children. Owing to the poor quality and the small sample size of included trials, more larger good quality CRTs are required to confirm this conclusion.

Objective To investigate the effects of the low-dose ketamine on the minimum alveolar concentration (MAC) of sevoflurane in patients undergoing gynecological abdominal surgery.Methods Fifty-one ASA Ⅰ or Ⅱ patients aged 36-49 yr with body mass index ≤ 30 kg/m2 scheduled for gynecological abdominal surgery were randomly divided into control group (group C, n = 29) and ketamine group (group K, n = 22) . The paitents were unpremedicated. In group K, a loading dose of ketamine 0.2 mg/kg was injected intravenously followed by infusion at a rate of 14 μg·kg-1 ·min-1 , while equal volume of normal saline was given in group C. Anesthesia was induced with inhalation of sevoflurane (end-tidal concentration 4%-5%, maintaining for 5 min) in both groups. Endotracheal intubation was performed. The patients breathed sevoflurane until the predetermined target end-tidal sevoflurane concentration was reached for at least 15 min before skin incision. Occurrence of body movement was determined by any visible contraction of the muscle bundle of trunk, limbs, head and neck during skin incision and/or within 60 s after skin incision. The initial end-tidal concentration of sevoflurane was set at 1.8 % .If body movement occurred, the end-tidal concentration of sevoflurane was increased by 0.2% , while if not, decreased by 0.2% . MACs of sevoflurane were calculated. Results The MAC of sevoflurane was 1.51% (95% confidence interval 1.45%-1.58%) in group K, and 2.49% (95% confidence interval 2.40%-2.57%) in group C, and there was significant difference between the two groups ( P < 0.05) . Conclusion Intravenous infusion of the low-dose ketamine can enhance the anesthetic effect of sevoflurane in patients undergoing gynecological abdominal surgery.

Objective To investigate the expression patterns of fibroblast growth factor 23 (FGF23) in osteoblast and its responses to calcium, phosphate, exogenous PTH and 1,25(OH)_2D~3. Methods The primary rat calvarial osteoblasts were cultured in MEM medium which containing 10% FBS, then were harvested when cells were in half-confluence, confluence, osteoid deposition and osteoid mineralization stages respectively. The procedure was monitored under microscopy. Total RNA was extracted from cells according to the Trizol procedure. FGF23 mRNA levels were determined by Real-time PCR. Further, the confluent osteoblasts were treated with 3.2 mmol/L CaCl_2, 4.4 mmol/L β-glycerophosphate, 10~(-9) mol/L rhPTH(1-34) and 10~(-8) mol/L 1,25(OH)_2D_3 respectively for 3 days, and same volume of the medium was added as the control. The gene expressions were determined by Real-time PCR. Results FGF23 expression was transiently up-regulated at cell confluent stage and down-regulated after that. The FGF23 mRNA levels were 7.5-fold higher in confluent cells compared with that in half-confluent cells (P<0.001). The markedlly stimulating effect (about 16 times) on FGF23 expression was stimulated by exogenous 1,25(OH)_2D_3 treatment while no significant effect was found on FGF23 mRNA levels by CaCl_2,β-glycerophosphate, and rhPTH(1-34) treatments when compared with the control. Conclusions The FGF23 expression in osteoblast is developmental stage-related and its powerful stimulator is 1,25(OH)_2D.

An ultra performance convergence chromatographic ( UPC2 ) method was established for the attribution analysis of the main peaks as well as the quantitative determination of echinacoside andβ-ecdyserone in Bushen Jiannao Grains. The samples were extracted with ethanol and separated on Waters ACQUITY UPC2TM BEH column (100 mm × 3. 00 mm, 1. 7 μm), with a gradient supercritical CO2-0. 05%phosphoric acid-methanol solvent system at 40 ℃. The flow rate was 0. 8 mL/min, the detection wavelength was set at 248 nm and the injection volume was 1 μL. Results showed that all the main peaks in the fingerprint were clearly attributed. The peak named 12 wasβ-ecdyserone with the content of 380μg/g and the peak named 15 was echinacoside with the content of 9. 562 mg/g. The method was simple, eco-friendly, accurate and reliable compared with HPLC and UPLC.

AIM:To investigate whether Chinese yellow wine has influences on homocysteine ( Hcy )-induced dysfunction in rat endothelial progenitor cells (EPCs).METHODS:Rat bone marrow was extracted to harvest mononucle-ar cells ( MNCs) by density gradient centrifugation .The MNCs were plated on fibronectin-coated culture dishes , and were induced into EPCs by EGM-2 complete medium supplemented with cell growth factor .The adherent cells were collected 7 d later for all studies .EPCs were characterized as adherent cells double positive for DiI-ac-LDL uptaking and lectin binding by direct fluorescent staining under a laser scanning confocal microscope .The viability, migration, apoptosis and in vitro vasculogenic activity of the EPCs were determined by MTT assay , Transwell chamber assay , apoptosis kit and in vitro vas-culogenesis kit, respectively.RESULTS:Compared with control group, the viability, migration and in vitro vasculogenic capacity of the EPCs in Hcy group were significantly decreased (P<0.01).Compared with Hcy group, yellow wine group and red wine group both significantly improved the viability , migration and in vitro vasculogenic capacity of Hcy-induced EPCs (P<0.01).Compared with control group, yellow wine group and red wine group both significantly improved the a-bove-mentioned functions of EPCs (P<0.05).However, no significant difference of apoptosis in all groups was observed . CONCLUSION:Hcy may result in dysfuction of EPCs .Treatment with yellow wine improves Hcy-induced EPC functions .

Eggwhitesolutionswereusedas“pendingtemplates”topreparemolecularimprintedpolymers. The obtained polymers acted as stationary phases, exhibiting abilities to deplete abundant proteins in the egg white. The abilities of protein depletion of the imprinted polymers could be adjusted by using different concentrations of egg white in preparing the polymers. After chromatographically processed in a home-made syringe system, abundant proteins such as ovalbumin, lysozyme, and ovotransferrin were removed from egg white sample solutions. Along with the disappearance of the mass spectrum peaks of these proteins, the signals of other components became more obvious. Meanwhile according to reference data and molecular weights, they were reasonably ascribed to be ovalbumin-related proteins, ovotransferrin-related proteins, ovomucoids or flavoproteins respectively. Conclusively, pending imprinting method has the power to deplete abundant proteins, and to retain and enrich posttranslationally modified species at the same time.

Aim To investigate if anti-depressive effect of venlafaxine was associated with improving oxi-dative stress and expression of hippocampus NET and 5-HTT in rat model induced by CUS. MethodsEighty SD male rats were randomly divided into four groups:model group(MG),normal group(NG), ven-lafaxine-treated normal group ( VNG ) , and venlafax-ine-treated model group ( VMG) . VNG and VMG were given venlafaxine (23. 4 mg·kg-1 ·d-1 ) once daily;NG and MG were given the same volume solvent. Soli-tary condition with chronic unpredicted stress ( CUS ) was taken to establish rat depression model. The force swimming test was used to evaluate the behavior chan-ges of experimental rats. The malondialdehyde ( MDA) level and activity of superoxide dismutase ( SOD ) in serum were determined by biochemical methods. The mRNA and protein expressions of NET and 5-HTT in
hippocampus were determined by Real-Time Reverse transcription polymerase chain reaction ( real-time RT-PCR) and Western blot ( WB) , respectively. Results Compared with NG rats, obviously increasing immo-bile time of rats in force swimming test and serum MDA level, as well as significantly decreasing SOD activity in serum was observed with clearly decreasing 5-HTT expression and elevating NET expression in hippocam-pus of MG rats. The treatment of venlafaxine distinctly suppressed changes above from CUS-induced rats. However, significant changes failed to be found in VNG rats. Conclusion The anti-depressive effect of venlafaxine may at least partly involve in improving ox-idative stress/anti-oxidative stress balance and revers-ing abnormal expression of NET and 5-HTT.