Animals ; Animals, Newborn ; Cell Survival ; drug effects ; Cells, Cultured ; Cerebral Cortex ; cytology ; drug effects ; Dose-Response Relationship, Drug ; Neurites ; drug effects ; Neurons ; cytology ; drug effects ; Organometallic Compounds ; toxicity ; Rats ; Rats, Wistar

Objective: To clone hGLP-1 cDNA in the pBS SK(+/-)vector and construct the expression vector of pGEX-4T-3/hGLP-1cDNA to express GST-hGLP-1 fusion protein. Methods: The hGLP-1 cDNA was constructed by 6 synthetic oligonucleotides fragments, followed by the procedure of annealing and ligation with oligonucleotides fragments. The hGLP-1 cDNA was cloned into the pBS SK(+/-) vector, and was selected by α-complementation. It was confirmed by DNA sequening, then inserted into the MCS of the fusion expression vector pGEX-4T-3. The recombinant vector was transformed into E. coli TG1. Results: The recombinant plasmid DNA was digested with restrictive endonuclease BamHⅠand XhoⅠ. The result demonstrated that the hGLP-1 cDNA was successfully inserted into the pGEX-4T-3 vector and fusion protein GST-hGLP-1 had been expressed in SDS-PAGE. Conclusion： Expression of GST-hGLP-1 fusion protein can provide foundation for obtaining a larger quantity of recombinant hGLP-1 for experimental and clinic studies.

Objective: To clone hGLP-1 cDNA in the pBS SK(+/-)vector and construct the expression vector of pGEX-4T-3/hGLP-1cDNA to express GST-hGLP-1 fusion protein. Methods: The hGLP-1 cDNA was constructed by 6 synthetic oligonucleotides fragments, followed by the procedure of annealing and ligation with oligonucleotides fragments. The hGLP-1 cDNA was cloned into the pBS SK(+/-) vector, and was selected by α-complementation. It was confirmed by DNA sequening, then inserted into the MCS of the fusion expression vector pGEX-4T-3. The recombinant vector was transformed into E. coli TG1. Results: The recombinant plasmid DNA was digested with restrictive endonuclease BamHⅠand XhoⅠ. The result demonstrated that the hGLP-1 cDNA was successfully inserted into the pGEX-4T-3 vector and fusion protein GST-hGLP-1 had been expressed in SDS-PAGE. Conclusion： Expression of GST-hGLP-1 fusion protein can provide foundation for obtaining a larger quantity of recombinant hGLP-1 for experimental and clinic studies.

Amino Acids ; metabolism ; Hepatic Encephalopathy ; therapy ; Humans ; Intestines ; metabolism ; Liver, Artificial ; Neurotransmitter Agents ; metabolism

Objective To compare the relative efficacy and quality of extraction of human fecal DNA using four methods.Methods Real-time PCR were utilized for analysis both quantification and quality of the fecal targeted bacteria(including gut all eubaeterium,Bacteriodes-PrevoteUa group,Bifidobacterium spp Enterobacteriaceae and Enterococcus spp)by using 16s rRNA gene-targeted genus or group-specific primer sets.Results The negative rat of PCR product from method 3(phenol-chloroform plus bead-beating) was about 40%(4/10)by using universal primers,the PCR inhibition disappeared after fecal DNA purified with column.The total fecal 16s rRNA gene copy numbers(per gram of wet weight of feces)as well as the numbers of Bacteriodes-Prevotella group from method 1(QIAamp~DNA stool mini kit)and 4(QIAamp~ DNA stool mini kit combined with bead-beating)was higher significantly than that from method 2(FastDNA ~Kit,Biol01)and 3(P

BACKGROUND: With mechanical ventilation widely used in intensive care unit, the ventilator associated pneumonia (VAP) has become a common and serious complication in critically ill patients. Compared with adults, the incidence of VAP and the mortality are higher in children in pediatric intensive care unit (PICU) because of immune deficiency, severe basic diseases, and increased use of artificial airway or mechanical ventilation. Hence it is of significance to study the epidemiology and changes of antibacterial susceptibility in order to reduce the incidence and mortality of VAP in children. METHODS: From January 2008 to June 2010, 2758 children were treated in PICU of Wuhan Children's Hospital. Among them, 171 received mechanical ventilation over 48 hours in PICU, and 46 developed VAP. The distribution and drug-resistance pattern of the pathogenic bacteria isolated from lower respiratory tract aspirations were analyzed. RESULTS: A total of 119 pathogenic microbial strains were isolated. Gram-negative bacilli (G-) were the most (65.55％), followed by fungi (21.01％) and gram-positive cocci (G+, 13.45％). Among them, the most common pathogens were Acinetobacter baummannii, Escherichia coli, Klebsiella pneumoniae, candida albicans and coagulase-negative staphylococci. Antibiotic susceptibility tests indicated that the multiple drug-resistances of G- and G+ to antibiotics were serious. Most of G- was sensitive to ciprofloxacin, amikacin, imipenem, meropenem, cefoperazone-sulbactam and piperacillin-tazobactam. The susceptibility of G+ to vancomycin, teicoplanin and linezolid were 100％. Fungi were almost sensitive to all the antifungal agents. The primary pathogens of VAP were G-, and their multiple drug-resistances were serious. CONCLUSION: In clinical practice we should choose the most sensitive drug for VAP according to pathogenic test.

BACKGROUND: With beta-lactam drugs and immunosuppressants widely used, the infection caused byAcinetobacter baumannii (Ab) has become more and more serious with multidrug resistant Acinetobacter baumannii (MDRAb) emerging and worsening rapidly. Compared with other patients, the incidence and multidrug resistance of MDRAb are higher in children in pediatric intensive care unit (PICU) because of immune deficiency, severe basic diseases, prolonged hospitalization and invasive operations. Hence it is significant to study the epidemiology and changes of antibacterial susceptibility in order to reduce the incidence of MDRAb in children. METHODS: A total 115 patients with MDRAb pneumonia and 45 patients with negative MDRAb (NMDRAb) pneumonia who had been treated from January 2009 to August 2011 were studied retrospectively at the PICU of Wuhan Children's Hospital. Clinical data were analyzed with univariate and multivariate Logistic regression. RESULTS: In 176 clinical strains ofAcinetobacter baumannii isolated, there were 128 strains of MDRAb, accounting for 72.73％. Drug susceptibility tests showed that the resistance rates of β-lactam antibiotics were more than 70％ except for cefoperazone sulbactam. The rates to carbapenems were higher than 90％. They were significantly higher than those of NMDRAb. Amikacin, levofloxacin, ciprofloxacin and minocycline had the lowest drug-resistance rates (<20％). Multivariate Logistic regression revealed that ICU stay, the time of mechanical ventilation, anemia, hypoproteinemia and the use of carbapenems were independent risk factors for MDRAb pneumonia. CONCLUSIONS: MDRAb is an important opportunistic pathogen to pneumonia in PICU, and its drug-resistance is severe. It increases significantly the mortality of patients. It is important to take the effective prevention measures for controlling it.

OBJECTIVETo design and improve signal processing algorithms of ophthalmic ultrasonography based on FPGA.

METHODSAchieved three signal processing modules: full parallel distributed dynamic filter, digital quadrature demodulation, logarithmic compression, using Verilog HDL hardware language in Quartus II.

RESULTSCompared to the original system, the hardware cost is reduced, the whole image shows clearer and more information of the deep eyeball contained in the image, the depth of detection increases from 5 cm to 6 cm.

CONCLUSIONThe new algorithms meet the design requirements and achieve the system's optimization that they can effectively improve the image quality of existing equipment.

Algorithms ; Data Compression ; Diagnostic Imaging ; Ophthalmology ; Signal Processing, Computer-Assisted ; Ultrasonography

OBJECTIVETo analyze the efficacy of adefovir dipivoxil combined with bicyclol in treatment of HBeAg-positive chronic viral hepatitis B (CHB).

METHODSA total of 91 patients with CHB were randomized into experimental group and control group to be treated. The patients in experimental group (46 samples) received adefovir dipivoxil orally 10 mg daily and bicyclol orally 150 mg daily for 48 weeks and those in control group (45 samples) received adefovir dipivoxil orally 10 mg daily alone for 48 weeks. The serum aminotransferace (ALT/ AST), HBV-DNA, HBeAg/antiHBe were observed before and after treatment.

RESULTSCompared with pretreatment, the serum aminotransferace were all decreased obviously in two groups, the experimental group is better (P < 0.05). HBVDNA negative conversion rate was significantly higher in experimental group than in the control group (47.8% vs. 31.1%, P < 0.05). There were nostatistically differrence between the two groups in the portion of HBeAg loss rate and HBeAg seroconversion rate. There were no obvious adverse reaction in the study.

CONCLUSIONAdefovir dipivoxil combined with bicyclol is efective in the treatment of chronic hepatitis B.

Adenine ; administration & dosage ; analogs & derivatives ; Adolescent ; Adult ; Aged ; Biphenyl Compounds ; administration & dosage ; Drug Therapy, Combination ; Hepatitis B e Antigens ; blood ; Hepatitis B virus ; genetics ; isolation & purification ; Hepatitis B, Chronic ; blood ; drug therapy ; virology ; Humans ; Male ; Middle Aged ; Organophosphonates ; administration & dosage ; Treatment Outcome ; Young Adult

Microtubule inhibitor has been a hot area of anticancer drugs research.Microtubule inhibitor exert an anti-tumor effect by promoting or inhibiting the microtubule aggregation to break the dynamic balance of microtubule,hindering the spindle forma-tion of tumor cells,and then blocking the process of cell divi-sion.Mitotic catastrophe is a cell death phenomenon that is caused by abnormal cell division and damage of spindle structure in cell mitosis phase.In recent years more and more attention has been paid to mitotic catastrophe cell death because it has
been confirmed clinically that microtubule inhibitors can induce mitotic catastrophe death of tumor cells.This paper reviews the latest research progress of microtubule inhibitors,and discusses the molecular mechanisms of mitotic catastrophe cell death tumor cells induced by microtubule inhibitors.