0.01). The result confirmed he research work of Kennedy that anti-idiotypic antibodies against anti-HBs can be function as the internal image of HBsAg.It is worth to further study the idiotype networks and regulation of the immune response in the field of HBV infection,especially,it can serve as vaccine of HBV.

Objective To explore the effect and mechanism of somatostatin and proton pump inhibitor (PPI) on Iks in pancreatic acini (RPA) by testing the change of slowly-activiting voltagedependent K+ channel current (Iks).Methods Pancreatic acini was isolated and its suspension was obtained.Iks values of different groups were recorded by an EPC10 patch clamp amplifier and the difference among the groups was compared.The groups were divided as followed:washing solution treated as control group,5 μmol/L or 20 μmol/L 293B groups,5 nmol/L secretin group,5 nmol/L secretin with somatostatin at 100 nmol/L or 10 nmol/L or 1 nmol/L groups,0.3 nmol/L 8Br-cAMP group,0.3 nmol/L 8Br-cAMP with 100 nmol/L somatostatin group,1 μmol/L acetylcholine group,1μmol/L acetylcholine with 100 nmol/L somatostatin group,5 nmol/L secretin with omeprazole at 10-5 mol/L or 10-6 mol/L or 10-7 mol/L groups,1 μmol/L acetylcholine with omeprazole at 10-5 mol/L or 10-6mol/L or 10-7 mol/L groups.Groups were compared by ANOVA,P ＜ 0.05 was considered statistically significant.Results The resting membrane voltage of rat RPA was - (40 ± 0.8) mV,and when depolarization to +10 mV,Iks of control group was (420.0±3.2) pA.After treated with 5 μmol/L or 20 μmol/L 293B,Iks of RPA decreased to (60.4±4.2)％ and (30.2±3.1)％(F=6.87,P＜0.05) of control group.Stimulated with 5 nmol/L secretin,Iks increased to (823.0±2.2) pA,and after adding somatostatin at 100 nmol/L or 10 nmol/L or 1 nmol/L,Iks decreased to (510.0±3.2) pA,(584.0±2.8) pA and (789.0±6.9) pA respectively(F=5.67,P＜0.05),after adding omeprazole at 10-5mol/L or 10-6mol/L or 107mol/L,the peak of Iks was (806.5±3.6) pA,(814.8±3.2) pA and (816.3±2.9) pA (P＞0.05).After stimulated with 1 μmol/L acetylcholine,the peak value of Iks was (966.0± 3.2) pA,and after adding omeprazole at 10-5 mol/L or 10-6 mol/L or 107mol/L,the peak of Iks was (956.3±10.3) pA,(957.5±8.6) pA and (960.0±8.4) pA (P＞0.05).Conclusion Somatostatin can inhibit Iks opening,and there is no significant inhibition of PPI on this channel.

This paper summarizes the features of web sites that would be useful to infectious diseases physicians by exploring the Internet through search engine including Google,Baidu and Yahoo.Meanwhile,suggestions from professional forums,web sites and publications are also taken into consideration.Nine Comprehensive sites containing three categories and more of microbial pathogens,nine special sites for parasites,four special sites for fungi,two special sites for viruses and two special sites for bacteria are collected.Subjective navigation for each site is given.Features of these sites,including laboratory images,clinical images and number of images are also described.

Objective To investigate the disinfectant-resistant gene qacA in Staphylococcus aureus isolates from the First Affiliated Hhospital of Chongqing Medical University. Methods A total of 126 S. aureus strains were isolated. The minimum inhibitory concentrations (MICs) of 4 representative monovalent and bivalent disinfectants were determined. Polymerase chain reaction (PCR) was employed to analyze the prevalence of qacA gene in these strains. Disk diffusion method was used to identify methicillin-resistant S. aureus (MRSA).Results Of the 126 S. aureus strains, 12 were positive for qacA gene. The prevalence of qacA in these strains was 9.5%. The prevalence of qacA gene in MRSA was 17.3%. Conclusions qacA gene is prevalent in the clinical isolates of S. aureus.

Objective To reproduce and validate the hexokinase reference method for glucose detection and compare other 5 routine glucose kits with this reference method. Methods The CDC hexokinase reference method for glucose detection was established and the performance was validated through testing a standard reference material (SRM) and participating in the IFCC ring-trial for reference laboratories for glucose evaluation. The CLSI EP 9-A2 protocol was used to compare the 5 routine glucose kits with the hexokinase reference method. Forty serum samples were analyzed by 5 routine kits and the hexokinase reference method. Results When SRM 965a was determined by the reference method,the bias of level 2 and level 3 were 0. 93%, -0. 23% respectively. The results for IFCC ring trial were within the accepted range. For the 5 routine kits, the confidence intervals of the predictive bias at the medical decision point Xc (Xc = 6. 11 mmol/L) were all within the range of defined acceptable error (10%) and the range of biological variation bias (6.9%). Conclusions The hexokinase reference method for serum glucose was reproduced in our lab. The serum glucose results measured with 5 routine kits were different from results detected with the reference method, but the bias was acceptable,and it will not affect the detection results.

Objective To assess systematically the effect of problem-based learning (PBL) versus traditional methods in nursing students.Methods Relative literature was searched by computer at home and abroad.according to the inclusion and the exclusion criteria,which were analyzed by RevMan5.2 software,and literature selection and repetition were used according to the Note Express software.Results A total of 9 studies of randomized controlled or not randomized controlled trial were brought into the study by random effects model.A total of 1 187 were collected into the study,574 in the experimental group and 613 in the control group.According to subgroup analysis showed by measurement scale,problem-based learning (PBL) can significantly improve the critical thinking ability of nursing students.The results had high stability and reliability.Conclusions PBL teaching method can significantly improve the critical thinking ability of nursing students,and provide a better learning method for clinical teachers and students,which is worthy of further promotion.

Objective To analyze of internal strength in patients with chronic disease,make clear the concept development,property,prerequisites,outcome and evaluation index of internal force.Methods To retrieve the relevant research literature in the knowledge service platform of Pubmed,PsycINFO and Chinese CNKI,Wanfang data,using the Rodgers analysis method to analyze the evolution of the concept of internal force.Results The molding process of internal strength of patients with chronic diseases included 4 defining characteristics:self concept,support,development and transcendence.Conclusions Rodgers evolution concept analysis method can help medical workers make clear concept essence of internal strength,deepening their cognition and understanding,so as to provide the basis for the implementation of the related research and clinical interventions.

The anti-idiotypic antibodies Specific for anti-HBs were prepared by Immunizing New Zealand white rabbits with anti-HBs according to the method of Kennedy. The serum was first purified through IgG of normal human-Sepharose 4B affinity Column.The anti-idiotypic Specificity of the antibodies obtained was identified with ELISA or RIA inhibition test.The resultshowed that the anti-idiotypic antibodies were directed at the idiotypic determinants on anti-HBs,and no cross reaction between anti-idiotypic antibodies and normal human IgG.

AIM:To determine the therapeutic efficacy of recombinant adenovirus containing hyper-interleu-kin-6 (HIL-6) and hepatocyte growth factor (HGF) (Ad-HGF-HIL-6) on acute-on-chronic liver failure (ACLF) in rats u-sing that of recombinant adenovirus HIL-6 or HGF ( Ad-HIL-6 or Ad-HGF) for comparison.METHODS:The rat model of ACLF was established and the model rats were randomly divided into model group, Ad0 group, Ad-HGF group, Ad-HIL-6 group and Ad-HGF-HIL-6 group.The sera and liver tissues were collected for biochemical, pathological and molecular bio-logical examinations.RESULTS:Compared with Ad0 group, prothrombin time ( PT) and the serum levels of alanine amin-otransferase (ALT), tumor necrosis factor-α(TNF-α), interferon-γ(IFN-γ) and high-mobility group box-1 (HMGB1) were markedly reduced in the ACLF rats treated with Ad-HGF, Ad-HIL-6 and Ad-HGF-HIL-6, and similarly, reduced he-patic damages and apoptotic activity, reduced Bax at protein level, and increased expression of Ki67 and Bcl-2 at protein levels were observed.Among them, treatment with Ad-HGF-HIL-6 showed the most significant therapeutic efficacy without obvious side effects.CONCLUSION:The therapeutic efficacy of Ad-HGF-HIL-6 is more potent than that of Ad-HGF or Ad-HIL-6 alone on ACLF rats with no significant side effects.

To investigate the distribution of the genes of two major metallo-beta-lactamases (MBL; i.e., IMP and VIM) and class 1 integrons (intI) in the clinical imipenem-resistant Pseudomonas aeruginosa, a total of 65 isolates, from a university hospital in Sichuan between December 2004 and April 2005 were screened for MBL genes by PCR using primers specific for bla ( IMP-1 ), bla ( VIM ) and bla ( VIM-2 ) genes. The MBL-positive isolates were further assessed for class 1 integrons by PCR using specific primers. The nucleotide sequences of several PCR products were also determined. The results revealed that the bla ( VIM ) gene was found in 81.5% (53/65) of all isolates, bla ( VIM-2 ) gene was found in only 1 isolate and the intI gene was observed in 45.3% (24/53) of bla ( VIM )-positive isolates. One isolate carried simultaneously both bla ( IMP-1 ) and intI genes, and to the best of our knowledge this is the first report of such isolate in southwest China. These observations highlight that the genes for VIM beta-lactamase and class 1 integrons were predominantly present among the imipenem-resistant P. aeruginosa tested, confirming the current widespread threat of imipenem-resistant, integron-borne P. aeruginosa.
Anti-Bacterial Agents/pharmacology ; China ; DNA Primers/chemistry ; Drug Resistance, Bacterial ; Gene Expression Regulation, Bacterial ; Imipenem/*pharmacology ; Integrons ; Microbial Sensitivity Tests ; Models, Genetic ; Pseudomonas Infections/genetics ; Pseudomonas Infections/*microbiology ; Pseudomonas aeruginosa/*metabolism ; Sequence Analysis, DNA ; beta-Lactamases/*metabolism