Objective To prepare an antiserum of human putative magnesium transporter protein (HPT protein) to study its biological effects on the drug resistance of gastric cancer cell by observing its expression level. Methods The cDNA encoding HPT protein was cloned and sequenced. Prokaryotic expression vector was constructed and HPT protein fused with histidine tag was expressed. Mice were immunized with the polyacrylamide gel particles containing the fusion protein, and the antisera of them were detected for antibody activity by Western blot. Using the antiserum, HPT protein expression level was assessed in different gastric cancer cell line. Results The sequence of cloned cDNA fragment was consistent with that of HPT. After BL21/pRSETB bacterium was induced with IPTG, a new protein band with a relative molecular weight of 55kD was showed on SDS PAGE profile, and further proved to be fusion protein with histidine tag by Western blot. The antiserum of immunized mice only recognized a unique protein band with a relative molecular weight of 50kD. HPT protein expression level in SGC7901/ADR was higher than in SGC7901. Conclusion The antiserum of HPT protein was successfully prepared, and HPT was found to probably take part in the gastric cancer cell MDR

Objective To assess any differences in brain activation during active,passive and imaginary movement of the hands using blood oxygen level-dependent functional magnetic resonance imaging (fMRI),and to provide references for the cortical reorganization in patients with brain injuries.Methods Twenty healthy,righthanded,adult volunteers were studied,fMRI was performed during active,passive and imaginary fist clutching.Whole brain analysis and group analysis were applied to get the voxels,the volume of activation,the peak t-score and its coordinates.Results Active and passive movement both produced significant activation in the contralateral sensorimotor cortex,the contralateral supplementary motor area and the ipsilateral cerebellum.The sensorimotor cortex was the most frequently and most strongly activated brain area.Imaginary movement produced significant bilateral activation in the supplementary motor area.Conclusions Active and passive movement induce similar brain activation patterns.This indicates that passive might replace active movement when observing activation of the brain's cortex during the rehabilitation of patients with hemiplegia.

Aim To investigate the effects of dioscin ( Dio) on rat myocardial contractility. Methods Left ventricular contractile function was measured using the Langendorff non-recirculating mode of isolated rat heart perfusion. Effects of low, middle and high concentra-tion of Dio were investigated by measuring left ventricu-lar systolic pressure ( LVSP ) and left ventricular end diastolic pressure ( LVEDP) . Also, peak rates of rise/fall of left ventricular pressure ( ± dp/dtmax ) of isolated rat heart were calculated. Effects of Dio on intracellu-lar free calcium concentration in rat H9 c2 cells were measured by using the confocal microscopy. Mitochon-drial membrane potential was detected with multifunc-tional microplate reader. Results With 0. 1, 1 μmol · L-1 Dio, LVSP were significantly enhanced from (11. 55 ± 0. 52), (10. 53 ± 0. 28) kPa to (13. 08 ± 0. 72), (12. 53 ±0. 64) kPa(P<0. 01); +dp/dtmax were dramatically increased from ( 0. 38 ± 0. 10 ) , (0. 40 ± 0. 07) kPa·ms-1 to (0. 42 ± 0. 11), (0. 43 ± 0. 02) kPa·ms-1(P<0. 05). With the 10μmol· L-1 Dio, LVSP and + dp/dtmax were both decreased from (12. 13 ± 0. 33) kPa and (0. 42 ± 0. 04) kPa· ms-1 to ( 9. 46 ± 0. 77 ) kPa and ( 0. 24 ± 0. 04 ) kPa ·ms-1 (P <0. 01). With 0. 1, 1, 10 μmol·L-1 Dio, the relative fluorescence intensity of intracellular free calcium concentrations was increased significantly from (16. 62 ± 0. 89) to (21. 48 ± 0. 80), (25. 68 ± 0. 69) and (19. 84 ± 0. 66)(P <0. 01)respectively. 0. 1, 1μmol·L-1 Dio showed no significant effects on the mitochondrial membrane potential of rat H9 c2 cells, while with effects of 10 μmol·L-1 Dio, the ra-tio of JC-1 monomer and J-aggregates was changed from (1. 14 ± 0. 03) to (1. 35 ± 0. 06)(P<0. 01), indica-ting a decrease in the mitochondrial membrane poten-tial. Conclusion Low and middle concentrations of Dio show a positive inotropic effect on isolated rat heart, as the LVSP and + dp/dtmax are enhanced, which may concern with the increase of the intracellu-lar concentration of Ca2+. It will not cause the calcium overload while the intracellular concentration of Ca2+ is increased by low and middle concentration of Dio in the myocytes except high concentration of Dio.

A chiral LC-MS/MS method for the simultaneous analysis of desvenlafaxine (DVS) enantiomers in human plasma was developed and applied to a pharmacokinetic study on 12 Chinese healthy volunteers. d6-Desvenlafaxine was used as internal standard (IS). Chromatographic separation was performed on the Astec Chirobiotic V chiral column (150 mm x 4.6 mm, 5 μm). The assay was linear over the concentration range of 0.500-150 ng x mL(-1) for both enantiomers (r2 > 0.99). The method was successfully applied to a stereoselective pharmacokinetic study of 100 mg desvenlafaxine sustained release tablets on 12 Chinese healthy volunteers under fasting conditions. The results showed that the pharmacokinetic parameters were similar to both enantiomers in Chinese healthy volunteers. The AUC(0-t), and C(max) of the two enantiomers were about 1.5 times higher than those of blacks and whites reported in the literature.
Administration, Oral ; Area Under Curve ; Asian Continental Ancestry Group ; Chromatography, Liquid ; Cyclohexanols ; blood ; pharmacokinetics ; Delayed-Action Preparations ; Desvenlafaxine Succinate ; Dose-Response Relationship, Drug ; Healthy Volunteers ; Humans ; Male ; Plasma ; chemistry ; Stereoisomerism ; Tablets ; Tandem Mass Spectrometry

This text probes into the usage of PLC controller which controls the X-ray generator's basic parameters.
Equipment Design ; Radiography ; instrumentation ; Radiotherapy ; instrumentation ; X-Rays

An oxygen-tolerant denitrifying strain designated as H1 was screened by the procedures of shallow shaking and continuous aeration cultures.With the aid of an nnrS-gfp fusion responsive to nitric oxide (NO)and acetylene inhibition-GC procedure,it was shown that strain H1 was able to produce NO and N_2O but not N_2 under denitrifying conditions.Denitrifying processes were thus determined as NO_3~-→NO_2~-→NO→N_2O,with N_2O as the end product.Strain H1 could denitrify under shallow shaking conditions as well as in the initial atmospheric oxygen concentration ranging from 0～21%.Denitrification processed normally under continuous aeration at the rate of 2 L air per min in a 150 mL medium,but stopped under high aeration rate as 5 L air per min.16S rRNA gene sequence revealed that strain H1 shared 98% similarity to its closet relative Ralstonia taiwanensis,the genus where denitrifying bacteria are frequently found.

This study aimed to explore the outcomes of progestin-primed ovarian stimulation protocol (PPOS) in aged infertile women who failed to get pregnant in the first IVF/ICSI-ET cycles with GnRH-a long protocol.A self-controlled study was conducted to retrospectively investigate the clinical outcomes of 104 aged infertile patients who didn't get pregnant in the first IVF/ICSI-ET treatment by stimulating with GnRH-a long protocol (non-PPOS group),and underwent PPOS protocol (PPOS group) in the second cycle between January 2016 and December 2016 in the Center for Reproductive Medicine,Renmin Hospital of Wuhan University.The primary outcomes included clinical pregnancy rate of frozen-thawed embryos transfer (FET) in PPOS group,and good-quality embryo rate in both groups.The secondary outcomes were fertilization rate,egg utilization rate and cycle cancellation rate.The results showed that there were no significant differences in basal follicle stimulating hormone (bFSH),antral follicle count (AFC),duration and total dosage of gonadotropin (Gn),number of oocytes retrieved,intracytoplasmic sperm injection (ICSI) rate,fertilization rate,and cycle cancellation rate between the two groups (P＞0.05).However,the oocyte utilization rate and good-quality embryo rate in PPOS group were significantly higher than those in non-PPOS group (P＜0.05).By the end of April 2017,62 FET cycles were conducted in PPOS group.The clinical pregnancy rate and embryo implantation rate were 22.58％ and 12.70％,respectively.In conclusion,PPOS protocol may provide better clinical outcomes by improving the oocyte utilization rate and good-quality embryo rate for aged infertile patients who failed to get pregnant in the first IVF/ICSI-ET cycles.

Objective To investigate the safety and efficacy of decitabine combined with CAG regimen in treatment of acute myeloid leukemia (AML) ineligible for conventional chemotherapy. Methods The data of 20 cases with AML ineligible for conventional chemotherapy from January 2013 to May 2015 were retrospectively analyzed. Decitabine combined with CAG regimen was used during induction therapy. The primary induction regimen was used 26 times after remission, the standard 3+7 regimen were used 7 times, and intermediate-dose cytarabine were used 3 times. The total course of treatment included 2-8 cycles. Results All of the 20 patients completed the first cycle of induction therapy, including 11 cases of complete remission (CR), 5 cases of partial remission and no response in 4 cases, and the overall response rate (ORR) was 80 % (16/20). ORR was 69.2 % (9/13) and 100.0 % (7/7) in high-risk group and middle-low risk group respectively. ORR was 60.0%(6/10) in AML evolving from MDS. 8 patients were infected during the induction therapy and the infection rate was 40.0% (8/20). 2 patients were died of pulmonary infection. The median number of suspended red blood cell and platelet infused were (9.1±5.7) U and (57.5±51.9) U respectively. Neutrophil recovery time was (8.7±5.6) days during induction therapy. All patients were followed up for at least 1 year, and 12 cases were dead. Overall survival rate was 85.0%at 3 months, 80.0%at 6 months, and 40.0%at 1 year. While in 12 CR patients relapse-free survival rate was 75.0%at 3 months, 75.0%at 6 months,and 65.6%at 1 year respectively. Conclusion Decitabine combined with CAG regimen with high remission rate and well tolerance, can be used as a first therapy for AML ineligible for conventional chemotherapy.

Objective - To establish a new non exposed intratracheal instillation method for establishing a rat silicosis model. Methods ， The specific pathogen free SD rats were randomly divided into control group and experimental group with ten rats in ， each group. Rats in the control group were given 1.0 mL of 0.9% sodium chloride solution and rats in the experimental group - were given 1.0 mL of silica suspension with a mass concentration of 50 g/L adopting to the one time intratracheal instillation ， - ， method and then followed by ventilator assisted ventilation immediately. When the tidal volume stabilized at 2.0 mL the ventilator was removed and the tracheal intubation was pulled out. Five rats in each group were sacrificed after two and four ， - Results weeks after modeling and hematoxylin eosin staining and Masson staining of lung tissue were performed. There was ， ， no death in the two groups of rats during the experiment. After two and four weeks the control group had normal lung structure ， ， ， normal alveolar cavity size no inflammatory cell infiltration thin alveolar wall only a small amount of collagen distribution ， around the lung interstitium and bronchus. At the second week of modeling the alveolar wall of the rats in the experimental ， ， ， group was slightly thickened interstitial lymphocytes and macrophages were infiltrated slight hyperplasia was found and a ， small amount of fibroblasts were visible. At the 4th week of modeling the alveolar wall of the rats in the experimental group was ， ， ， ， significantly thickened fibrous nodules were formed and fibroblasts fibrocytes collagen fibers were significantly increased. Conclusion - The combination of ventilator and non exposed intratracheal instillation method can be used to successfully ， ， . establish a rat silicosis model which is simple safe and effective

OBJECTIVETo study the effect of buffer on separate capacity of macroporous resin. To evaluate the quality of ferulic acid liposome and determine its entrapment efficiency.

METHODDifferent type of macroporous resin counterpoised by buffer system of Na2 HPO3-NaH2, PO3 was used to separate the free ferulic acid from the preparation and HPLC was used to determine the concentration of the ferulic acid to calculate the entrapment efficiency.

RESULTThis method had good linearity in the range of 0.56 - 2.8 g x mL(-1) (r = 0.999 6). The precision RSD was less than 1.1%. The adsorption effect of macroporous resin on liposome was reduced while it had no effect on the absorption ability of macroporous resin on the ferulic acid by the usage of buffer. The recovery of HPD450 resin on blank liposome was between 97.2% - 100.8%, while the average recovery is 98.1%.

CONCLUSIONBuffer system can enhance the separate ability of macroporous resin on liposome and free drug.