Objective:To find out the impacting factors in uncertainty by analyzing the measurement uncertainty in the determina-tion of irbesartan tablets by HPLC and provide the evidence for the measurement evaluation. Methods:A mathematic model for calcu-lating uncertainty was established, and every component in the uncertainty was assessed. Results:The expanded standard uncertainty for the HPLC determination was 2. 4%. Conclusion:The measurement uncertainty of the experiment is mainly caused by the measur-ing method.

Objective This study was to investigate the relation of nitric oxide synthase with cell proliferation and apoptosis in hepatocellular carcinoma (HCC). Methods The expression and localization of inducible nitric oxide synthase (iNOS) and PCNA in 21 patients with HCC were studied by immunohistochemistry. Apoptotic cell in tissue section was detected by TUNEL (terminal deoxynucleotidyl transferase [TdT] mediated desoxyuridinetriphosphate [dUTP] nick end labeling). Results The iNOS protein was markedly expressed in the liver tissue of hepatic cirrhosis or chronic liver hepatitis, which was close to tumor edge. Meanwhile it was weakly or undetectable in the liver tissue localized beyond 1.5 cm from the tumor edge. The iNOS protein was markedly expressed at the invasive tumor edge and HCC cells that invased into stroma, but it was weakly or undetectable at the most tumor core. The expression of iNOS was correlated with the proliferative activity of cells, and the number of apoptotic cells was correlated to the number of PCNA positive cells ( P

Objective To construct prokaryotic expression vector of NS5A transactivating protein 7 of hepatitis C virus (NS5ATP7), induce the expression of NS5ATP7 in E. coli, and to predict its structure and function by bioinformatics analysis. Methods NS5ATP7 gene was amplified by reverse transcription PCR (RT-PCR) using HepG2 cells mRNA as template, and was ligated into pGEM-T cloning vector. After verifying the sequence of the inserted fragment by restriction enzyme digestion identification and sequencing, NS5ATP7 was cloned into inducible prokaryotic expression vector pET-32a(+) and transfected into competent E. coli BL21. The protein expression was induced with IPTG and the product was analyzed by SDS-PAGE and Western blotting hybridization. The structure and function of NS5ATP7 were predicted using bioinformatics techniques. Results NS5ATP7 gene with about 891bp was amplified by RT-PCR, which was coincident with that we expected, and it was then inserted into expression vector pET-32a(+). Under the induction of IPTG, the recombinant NS5ATP7 was expressed successfully. SDS-PAGE and Western blotting assay showed that this recombinant protein possessed good immunogenicity. Bioinformatics method such as ExPASy, TMHMM and SignalP analysis indicated that NS5ATP7 was full of helices, had neither transmembranous structure nor signal peptide. Conclusions The recombinant NS5ATP7 gene could be successfully expressed in prokaryotic expression system of E. coli, which might lay the foundation of studying the immunogenicity and biological charactersitics of the NS5ATP7. Bioinformatics analysis may provide a new method to analyze the structure and function of a new protein.

Objective To investigate the effect of PTEN protein on the proliferation of rat renal fibroblasts resulted from the stimulation of TGF-?_1. Methods In vitro, the cultured rat renal fibroblasts were transfected with the adenovirus containing PTEN. Invert fluorescent microscope was used to detect the GFP expression, meanwhile PTEN mRNA was determined by RT-PCR method. 48h after the transfection, TGF-?_1 was added into the culture medium in a concentration of 10ng/ml. After another 24h, the proliferation rate of rat renal fibroblasts was determined by means of MTT method. Immunocytochemistry was also used to detect the expression of PCNA. Results As GFP positive fibroblasts were detected,the expression of PTEN mRNA was significantly increased in the rat renal fibroblasts which were transfected with the adenovirus containing PTEN. Accompanied with the expression of PTEN, the proliferation of cultured rat renal fibroblasts resulted from the stimulation of TGF-?_1 was obviously inhibited, and the expression of PCNA was significantly decreased. Conclusion PTEN could suppress the proliferation of rat renal fibroblasts caused by stimulation of TGF-?_1, and it might be useful to inhibit renal fibrosis and delay the rate of renal impairment.

Objective To investigate the therapeutic efficacy of Video-assisted thoracoscopic surgery (VATS)in treating hemopneumothorax. Methods 83 cases of hemopneumothorax treated with exploratory thoracotomy with the help of VATS were retrospectively analyzed. Results All the 83 cases were completed successfully by the VATS.22 cases were treated with bunamiody resection,42 eases were treated with lung repair operation,12 cases were treated with pleuropexy,5 cases were treated with albumingel injection,2 cases were treated with thoracotomy because of serious injury.All patients were followed up 1 year and were found in good condition. Conclusion VATS could treat bunamiody resection and lung repair operation,can stop the bleeding effectively, cause less injury,good therapeutic effect and quickly recovery.

Objective To observe the diagnosis and surgical treatment of substemal goiter. Methods The clinical data of 26 cases with substemal goiter underwent thyroidresection were retrospectively analyzed. Results All the 26 cases were treated by operation. 20 cases were operated by Lower collar incision. 6 cases were operated by ster-notomy. The pathological results showed nodular goiter in 18 cases,follicular adenoma in 6 cases,and papillary carcinoma in 2 cases. Conclusions Surgery via cervical collar incision was fit for most of retrostemal thyroid nodules,and sternotomy or thoracotoray were safely fit for large or carcinomatous substemal goiter. Most cases of retrostemal goiter could be removed by Lower collar incision.

OBJECTIVE:To observe the stabilities of zedoary turmeric oil and glucose injection mixing with 5 kinds of antibiotics METHODS:The contents of curcamol in mixed fluid were detected with UV spectrophotometry,and the external appearance and value of pH were observed RESULTS:After mixing zedoare turmeric oil and glucose injection with 5 kinds of antibiotics,no gas and sediment were found Values of pH were different in the 5 simples,and did not change markedly over 3 hours The concentration of curcumol was markedly reduced and the sample turned to brown in mixing with cefoperazone sodium;the concentration was declined in mixing with ceftriaxone sodium and decreased 6% with cefradine and was not markedly reduced in mixing with clindamycin and netilmicin CONCLUSION:This preparation is compatible with netilmicin and clindamycin,however,it is incompatible with cefoperazone and ceftriaxone

To investigate different effects of fiscal health expenditure, household spending on health and social health expenditure on narrowing the gap between urban and rural health resource allocation. Methods: With the relevant data of China’ s medical and health through 1985-2011 years, taking methodology of the state space model to estimate the varying-time elasticity of different types of expenditures on urban and rural health resource allocation gap. Results: For narrowing the gap, household health expenditure played the leading role, fiscal health expenditure played smaller role and the social health expenditure played the supplementary role; the elastic of different health expenditure proportion was fluctuated before 2002, which became stable after 2002; it is easy to improve the “hard conditions” rather than the “soft conditions” . Conclusion: To accelerate the process of urban and rural medical security system integration, it is inevitable to establish an efficient configuration mechanism for urban and rural health expense, balanced develop urban and rural medical insurance system and scientifically guide social health investment.

Objective To study the quality testing of dose delivery system of the active spot scanning proton and heavy ion accelerator,in order to provide the reference for the quality control of related equipment.Methods In the four therapy rooms,both 0.6 cc chambers and Gafchromic EBT3 films were used,respectively,to test the accelerator for dose reproducibility,dose linearity,dose stability,depth dose distribution,beam scanning position deviation and radiation field uniformity in each therapy room.Results Dose reproducibility variation coefficients are all less than 1.5％,dose linearity's maximum deviations less than 2％,dose stability's deviations less than 2％,depth dose distribution stability within 2％,beam scanning position deviation less than 1 mm,consistency of irradiation field's deviation less than 2 mm,and flatness within ± 5％.Conclusions The indicators about quality testing for the active spot scanning proton and heavy ion accelerator are all in line with the requirements of IEC standards draft.