AIM: To investigate the expression of the nephrin in podocyte of the diabetic nephropathy(DN) rats and the mechanism of irbesartan-induced renal protection.METHODS: The DN model was established by a single injection of streptozotocin(STZ),and DN rats were randomly divided into 2 groups: model group and irbesartan treatment group.In addition,the normal rats served as a normal control group. All the rats were received daily gavage respectively for 8 weeks. The urinary protein quality in 24 hours,body weight(BW),kidney weight (KW),KW/BW,glucemia,urea nitrogen,creatinine,total cholesterol, triacylglycerol were detected with correlative methods and the pathological changes of kidney were also detected with optic microscope and transmission electron microscope.The expression of nephrin in podocyte were detected by immunohistochemistry. RESULTS: In DN rats, irbesartan reduced the urinary protein quality in 24 hours (P

To probe into a method for establishing the fuzzy mathematical model for syndrome differentiation of gastric cancer.

Objective　According to Kaschin-Beck Disea se monitory standardization that had been adjusted by our country,we monitored the state of Kaschin-Beck Disease in Gansu province.Methods　So as to understand change of illness,we took methods of epidemiological investigation,clinical examination and X-ray diagnosis.Results　It is not detected in the clinical that patient suffered from more than I of KBD among 7～12 years old in Qingyang monitory netw ork.X-ray detectable rate is 3%,but 12 cases patients were showed in Zhangjiach uan.X-ray detectable rate is 22.22%.Conclusions　Illness was showed steady state and was con trolled in Qingyang region,but illness recurred clearly in Zhangjiachuan region.

Humans ; Rib Fractures ; Thoracic Injuries

The influenza A virus matrix protein2 gene(M2)which deleted transmembrane region was amplified by overlap extending PCR,and the multiepitope gene of hemagglutinin(HA)was PCR amplified with seven continuous synthesized segments by designing primer.The two gene segments were separately cloned into pMD18T vector to sequence analysis and prokarytic expression vector pET28a+ to construct the recombinant plasmid pET28a+M2dHA.The recombinant plasmid was transformed into E.coli BL21(DE3),and the high expression strain was obtained by screening monoclones.The recombinant protein existed as inclusion bodies,which accounted about 45% of the total cellular protein.The inclusion bodies were washed with 1% Triton X100 solution twice,and dissolved in 8 mol/L urea solution.The solution protein was purified by Ni+2 affinity chromatography,and refolded by dilution renaturation,then purified by Q Sepharose FF cation exchange column.The purity of the protein was over 90% by HPLC analysis.The result of Western blot showed it has good antigenicity and specificity.These results strongly supported for the further study of the broadspectrum influenza virus subunit vaccine.

This list of clincal data management documentation is to ensure standardized and adequate archival of trial documents and records in clinical data management, which is applicable to all of phase I-IV clinical trials.
Clinical Trials as Topic ; Data Collection ; standards ; Documentation ; standards

Objective:To determine the dose-effect relationship of nalbuphine preventing injection pain of medium plus long chain triglyceride propofol in pediatric patients undergoing gastroenteroscopy.Methods:Pediatric patients, aged 3-8 yr, of American Society of Anesthesiologists physical statusⅠ or Ⅱ, scheduled for elective gastroenteroscopy, were enrolled in the study.The doses of nalbuphine were determined by up-down sequential allocation, nalbuphine 0.2 mg/kg was injected intravenously in the first child, and 5 min later medium plus long chain triglyceride propofol 2.5 mg/kg was given intravenously.Ambesh 4-point method was used to evaluate the injection pain of propofol.When the prevention of injection pain was ineffective, the dose of nalbuphine was increased in the next patient, otherwise the dose was reduced, and the difference between the two successive doses was 0.01 mg/kg.This process was repeated until the 7th turning point occurred.The ED 50 and ED 95 of nalbuphine and 95% confidence interval (CI) preventing injection pain of propofol were calculated by Probit regression. Results:The ED 50 and ED 95 (95% CI) of nalbuphine preventing medium plus long chain triglyceride propofol injection pain were 1.57 (1.50-1.62) and 1.71 (1.64-2.05) mg/kg, respectively. Conclusion:The ED 50 and ED 95 of nalbuphine preventing injection pain of medium plus long chain triglyceride propofol are 1.57 and 1.71 mg/kg, respectively, in pediatric patients undergoing gastroenteroscopy.

A diving decompression procedure is a specific rule that divers should follow when they ascend and get out of water. It comes from the decompression theory and algorithm and is designed for the prevention of decompression sickness. With the ， ， development of diving technology and diving medicine the decompression procedures are constantly innovated and the new ， decompression procedure can be used in diving practice after safety verification. In principle the safety verification of ， decompression procedures should be conducted on animal experiments before human experiments and the risks of ， decompression sickness and oxygen toxicity should be systematically assessed. However the assessment methods used in ， ， ， different studies differ greatly thus it is urgent to establish a standard and universal verification system. Traditionally the risk ， ， assessment of decompression sickness and oxygen toxicity is mainly carried out by observing the incidence detecting bubbles ， theoretical calculation and lung functional test. Furthermore biochemical indicators are increasingly becoming important ， ， supplements. Due to the special underwater environment the diving operation is prone to accidents. Therefore in addition to ， verifying the safety of the new decompression procedure exploring its safety decompression limit is of great significance for the formulation of emergency decompression procedures in emergency situations. The specific approach is to shorten the decompression time and assess the safety until the critical time for detecting bubbles without the occurrence of decompression ， ， sickness is found. Future studies should continue to optimize safety assessment methods explore sensitive biochemical markers ， clarify species associations and improve verification efficiency and reliability of results.

The gene of mutated TNF-?D4 gene was amplified by overlap PCR and cloned into the prokaryotic expressive vector pBV220.TNF-?D4 contains two changes:substitutions of Pro8Arg,Ser9Lys,Asp10Arg,Ile157Phe,Leu29Ser,Arg31Val and a deletion of the N terminal four amino acids.The recombinant vector pBV220-TNF-?D4 was transformated into E.coli strain DH5?,and the high expression strain was obtained by screening monoclones.The level of expression was about 45% of total cell protein.After purification,the purity of fusion protein was above 90% by HPLC and relative ability was 8 ?107.TNF-?D4 was modificated by mPEG-ButyrALD。After purification,the purity of mPEG-TNF-?D4 was above 85% and relative ability was 8.6?107.The in vivo systemic toxicity of mPEG-TNF-?D4,which is indicated by LD50,is lower than that of rhTNF-?.These results strongly supported for the further study and exploitation of TNF-antitumor drug.

Objective To explore in vitro mesenchymal stem cell (MSC) transfection of lentiviral vector mediated calcitonin gene‐related peptide(CGRP) gene and its effects on biological properties of MSC .Methods MSC were isolated ,cultured and identi‐fied .MSC were infected by lentivirus encoding recombinant enhanced green fluorescent protein (EGFP) gene and CGRP (Lv‐EG‐FP‐CGRP) .The transfection efficiency was determined by the inverted fluorescence microscope and flow cytometry .The expression levels of CGRP were detected in CGRP‐modified MSC by using real‐time PCR ,immunocytochemistry and enzyme‐linked immu‐nosorbent assay (ELISA) .The proliferation ,aging and differentiation ability of MSC were evaluated by MTT ,β‐galactosidase stai‐ning and inducing differentiation respectively .Results After 48 h of MSC transfection by Lv‐EGFP‐CGRP ,EGFP/CGRP could be expressed stably .When multiplicity of infection (MOI) was 30 ,the transfection efficiency reached more than 80% .Compared with the MSC group and the MSC‐EGFP group ,the mRNA and protein expression levels of CGRP in CGRP‐modified MSC(MSC‐CGRP group) were markedly increased(all P<0 .01) .The results of MTT ,β‐galactosidase staining and inducing differentiation assay dem‐onstrated that the transfected CGRP basically had no effect on the proliferation ,aging and endotheliocyte differerntiation of MSC . Conclusion MSC is a kind of ideal genetic vector cell ,which can serve as the target cell of CGRP gene transduction for the applica‐tion of gene therapy and lays the foundation for follow‐up in vitro and vivo experiments .