OBJECTIVE:To discuss about the reasonable drug price management model in China METHODS:The current drug price management model and its defects were analysed in detail RESULTS & CONCLUSION:The implication of the reasonable model is that drug price should be mainly determined by the market By way of enlarging the power of market in regulating price,improving the scientificalness and transparency in setting price and carrying out whole range of reforms in manufacture,circulation and medical insurance,drug price problem will be solved to a certain degree

Objective To evaluate the effects of botulinum toxin type A (BTX-A) on spasticity of wrist and hand post stroke. Methods 36 patients accepted BTX-A injection were assessed with modified Ashworth scale (MAS), Upper Extremities Functional Test (UEFT), limbs position at rest, Visual Analogous Scale (VAS) for pain, modified Barthel Index (MBI), and difficulties encountered during 3 upper limb motor tasks: cleaning the affected palm, cutting the affected fingernails, putting the affected arm into the sleeve, before and 2, 4, and 12 weeks after treatment. Results The scores of MAS, VAS, UEFT and accomplishment of those tasks improved after treatment (P<0.05), from 1 week to 12 weeks. No significant improvement was observed in MBI (P>0.05). Conclusion Local BTX-A injection can reduce the spasticity and pain, and improve function of upper limbs for stroke patients.

A laboratory scale combination process of anaerobic baffled reactor(ABR) with sequencing batch reactor(SBR) for treatment of real dyeing wastewater was studied.The effects of operational conditions were investigated.The results demonstrated that removal rates of COD,colour and aniline were 32%~95%,89%~99% and 50%~98%,respectively,the effluents of COD were 30.0 ~97.1mg/L,colour were 8 ~40 times dilution ratio,concentration of aniline were 0.20 ~0.95 mg/L,which could meet the National Discharge Criteria(GradeⅠ) under the operational conditions of HRTs of 24~36 h,organic loading rates of 0.43 ~2.46 kg COD/(m~(3)?d),the influent pH values of 6.5~8.0,ambient temperatures of 20℃~35℃ at the ABR stage and DOs of 2 mg/L,reaction times of 3~10h,settle times of 2 h at the SBR stage.

Objective To determine the gene polymorphism and serum concentration of mannose-binding lectin (MBL) in patients with psoriasis,and to analyze the relationship between MBL and psoriasis.Methods Totally,67 patients with psoriasis vulgaris and 69 healthy human controls were enrolled in this study.Venous blood samples were obtained from all the subjects.Genomic DNA was extracted,and PCR-restriction fragment length polymorphism (PCR-RELP) analysis was conducted to determine the polymorphism at codon 54 of the MBL gene.Enzyme-linked immunosorbent assay was performed to measure the serum level of MBL.A chi-square goodness-of-fit test was carried out to evaluate Hardy-Weinberg equilibrium,t test to compare the serum concentration of MBL,and chi-square test to compare the frequency of genotypes and alleles of MBL gene codon 54.Results The patients with psoriasis showed higher frequency of GGC/GAC heterozygote but lower frequency of GGC/GGC homozygote (x2 =10.36,P ＜ 0.05),together with increased frequency of GAC allele but decreased frequency of GGC allele (x2 =8.31,P ＜ 0.05),at codon 54 of the MBL gene compared with the healthy controls.The variant allele GAC at codon 54 of the MBL gene was markedly associated with psoriasis (OR =3.383,95％ CI 1.585-7.211,P ＜ 0.05).The serum concentration of MBL was (2.193 7 ± 0.816 3) mg/L in patients with psoriasis,significantly lower than that in the healthy controls ((3.269 5±1.205 8) mg/L,t=6.11,P＜ 0.05).Conclusion MBL might be associated with the pathogenesis of psoriasis to some degree.

Micro- and integrated biosensor provides a powerful means for cell electrophysiology research. The technology of electroplating platinum black on the electrode can uprate signal-to-noise ratio and sensitivity of the sensor. For quantifying analysis of the processing method of electroplating process, this paper proposes a grid search algorithm based on the Monte-Carlo model. The paper also puts forward the operational optimization strategy, which can rapidly implement the process of large-scale nanoparticles with different particle size of dispersion (20-200 nm) attac- hing to the electrode and shortening a simulation time from average 20 hours to 0.5 hour when the test number is 10 and electrode radius is 100 microm. When the nanoparticle was in a single layer or multiple layers, the treatment uniformity and attachment rate was analyzed by using the grid search algorithm with different sizes and shapes of electrode. Simulation results showed that under ideal conditions, when the electrode radius is less than 100 /m, with the electrode size increasing, it has an obvious effect for the effective attachment and the homogeneity of nanoparticle, which is advantageous to the quantitative evaluation of electrode array's repeatability. Under the condition of the same electrode area, the best attachment is on the circular electrode compared to the attachments on the square and rectangular ones.
Algorithms ; Biosensing Techniques ; Electrodes ; Models, Theoretical ; Monte Carlo Method ; Nanoparticles ; Particle Size ; Platinum

Objective To investigate the effect of sodium fluoride(NaF) on proliferation, differentiation and the mRNA expression of osteoprotegerin (OPG) and receptor activator of nuclear factor κβ ligand (RAN KL) of mouse osteoblasts. Methods Osteoblasts were isolated from calvarias of Kunming mice born in 1 - 2 d and cultured. Various concentrations of NaF(0, 10-8, 10-7, 10-6, 10-5, 10-4, 10-3mol/L) were added to the culture medium, the proliferation and activity of alkaline phosphatase(ALP) was determined after 72 h or 120 h. The expression of OPG mRNA and RANKL mRNA was analyzed by semi-quantification RT-PCR. Difference among groups was analyzed by One-Way AN0VA. Difference between two groups was analyzed by LSD-t test. Results There was significant difference in cell proliferation among groups after 72 h(F = 13.806, P < 0.05). Compared with control group(0.434 ± 0.010) , the proliferation was significantly induced in 10-7 - 10-4 mol/L groups treated osteoblasts (0.448 ± 0.010, 0.453 ± 0.013, 0.454 ± 0.016, 0.449 ± 0.018, all P< 0.05), and was significantly suppressed in 10-3 mol/L group(0.401 ± 0.009, P < 0.05). There was statistic difference in the activity of ALP among groups(F = 9.021, P < 0.05). Compared with control group (1.677 ± 0.682), the activity of ALP significantly increased in 10-7 - 10-5 mol/L groups[ (2.447 ± 0.756) × 106, (2603 ± 0.183) × 106, (2.687 ± 0.886) × 106 U/L, P < 0.05 or P < 0.01 ] and significantly decreased in 10-4 mol/L group[ (1.479 ± 0.366) × 106 U/L, P < 0.05 ]. There was significant difference in the expression of OPG mRNA among groups(F = 11.299, P< 0.05). Compared with control group (1.000 ± 0.000), the expression of OPG mRNA was significantly increased in 10-7 - 10-4 mol/L groups( 1.058 ± 0.027, 1.053 ± 0.026, 1.088 ± 0.055, 1.069 ± 0.008, P < 0.05 or P < 0.01) , while significantly decreased in 10-3 mol/L group (0.941 ± 0.029, P< 0.05). There was no difference in RANKL mRNA expression among groups (F= 1.311, P> 0.05). The ratio of RANKL/OPG decreased with increasing doses of fluoride and increased in 10-4, 10-3 mol/L groups, but there was no difference between groups(F = 1.376, P> 0.05). Conclusions A biphasic pattern of proliferation and differentiation has been induced in mouse osteoblasts, which manifests stimulation effect in low doses and suppression in higher doses. Low doses of sodium fluoride suppress differentiation and maturation of osteoblasts by increasing expression of OPG mRNA, while high doses of sodium fluoride enhance differentiation and maturation of osteoblasts by decreasing expression of OPG mRNA.

Objective To evaluate the significance of fiberoptic bronchoscopic brush cytology in the diagnosis and histological classification of lung carcinoma.Methods Data of 309 patients with lung carcinoma were retrospectively analyzed.Both bronchoscopic cytology and histology diagnosis were available.The positive rate of bronchoscopic cytology and tissue biopsy were calculated respectively.The classification accuracy of cytological diagnosis for lung carcinoma was evaluated.In tissue biopsy standard,evaluated the significance of bronchoscopic cytology in diagnosis and histological diagnosis.Results The positive rate of bronchoscopic cytology and tissue biopsy were 86.1％ (266/309) and 83.8％ (259/309),respectively.Bronchoscopic cytology combined with bronchial biopsy could obviously improve the positive rate to 94.2％ (291/309) in lung carcinoma diagnosis.Taking the tissue biopsy histological type as a standard,the cytotyping accuracy for brush method was 85.1％(74/87) in squamous carcinoma,82.4％(108/131) in adenocarcinoma and 100％(11/11) in small cell carcinoma for higher.However,the accuracy in diagnosing poorly differentiated carcinomas was only 12.2％ (5/ 41).Conclusion Fiberoptic bronchoscopic brush cytology plays an stable and important role in diagnosing lung carcinomas and histological type determination.However,it has limited use in diagnosing poorly differentiated carcinomas.

Objective To detect the level of serum Klotho in chronic kidney disease (CKD) 3-5 stage patients and explore its relationship with the progress of renal function.Methods Twenty-nine patients with CKD 3-5 stage (CKD group) and 10 cases of age-matched non-CKD patients (control group) were enrolled in the study.The level of serum Klotho and fibroblast growth factor 23 (FGF23) were measured by enzyme-linked immunosorbent assay.Results The level of serum Klotho in CKD group was significantly lower than that in control group [(670.07 ± 146.22) ng/L vs.(1 125.50 ± 126.96) ng/L] (P ＜ 0.01).The level of serum FGF23 in CKD group was significantly higher than that in control group[(48.89 ± 44.28) ng/L vs.(10.48 ± 8.93) ng/L] (P ＜ 0.01).Pearson correlation analysis showed that the level of Klotho in CKD patients was positively correlated with estimated glomerular filtration rate (eGFR) and hemoglobin,and Klotho was negatively correlated with log urea nitrogen,log serum creatinine,log FGF23 and phosphate.Multiple regression analysis showed that log FGF23 and serum phosphorus were independent factors for serum Klotho level in patients with CKD.CKD patients were divided into rapid progression of renal function group (10 cases) and renal stability group (19 cases) according to annual rate of eGFR dechne.The patients in rapid progression of renal function group with lower serum Klotho [(580.27 ± 162.15) ng/L vs.(717.33 ± 115.22) ng/L],higher uric acid and more severe proteinuria [(448.00 ±65.21) mmol/L vs.(368.32 ±78.80) mmol/L,(1.99 ± 1.57) g/d vs.(0.60 ± 1.00) g/d] (P ＜0.05).Conclusions Serum Klotho level of CKD 3-5 stage patients decreases with the decline in renal function.Serum phosphate and FGF23 are the independent factors for serum Klotho.Serum Klotho may become the prediction index of renal function progress for patients with CKD.

Objective To establish a method for measuring serum content of gentiopicroside in Beagle dogs and to explore its internal pharmacokinetic features. Methods The rapid and sensitive HPLC method was adopted as external standard. After intravenous injection of gentiopicroside, serum samples of the Beagle were collected and measured on C18 reverse-phase chromatographic column after liquid -liquid extraction. Results The linear range of gentiopicroside was 0.1343～687.375 ?g?mL-1(r2=0.99993). The recovery was within 81.15 %～97.99 %. The limit of detection (LOD) was 0.1343 ?g?mL-1. Conclusion The pharmacokinetic process of gentiopicroside can be described as one-compartment model with intravenous injection , t1/2 = 1.1324 h, Ke = 0.5811 h-1, V= 0.5316 L?kg-1, CL = 0.3274 L?kg-1?h-1. This indicates that gentiopicroside can be quickly distributed and eliminated and is not liable to be accumulated in the body.