Objective To analyze the immune efficacy and influencing factors of hepatitis B vaccine(HepB)in adults（≥40 years）in Tongzhou District,Beijing,so as to provide scientific basis for adult HepB immunization strategy.Methods Permanent residents aged 40 years and older in Tongzhou District with negative hepatitis B five indexes were randomly divided into three groups. The three groups were inoculated with Saccharomyces cerevisiae HepB,Hansenula HepB,and Chinese hamster ovary(CHO)HepB according to the“0-1-6 months”schedule. Blood samples were collected before as well as the 1st and 6th month after full immunization for hepatitis B surface antibody(anti-HBs)detection. The χ~2test,non-parametric test,univariate and multivariate Logistic regression were used to analyze antibody seroconversion rate and influencing factors. Through passive monitoring,the suspected adverse events following immunization(AEFI)occurred within 28d after vaccination were collected.Results One month after the full immunization,the overall seroconversion rate of anti-HBs of the three vaccines was 90. 07%,and the geomtric mean concentration(GMC)was 206. 06 IU/L. After six months,the overall seroconversion rate of anti-HBs was 82. 88% and the GMC was 68. 17 IU/L,with the significant difference（χ~2=149. 42,P < 0. 001;Z =-11. 942,P < 0. 001）. Multivariate analysis showed that different vaccine types were the influencing factors of anti-HBs seroconversion rate after 1 and 6 months of full immunization(OR > 1,P < 0. 05),while gender was the influencing factor after 6 months of full immunization(OR > 1,P < 0. 05). In addition,No AEFI report was collected.Conclusion People over 40 years old could get good immune effect after inoculation of HepB for 1 and 6 months,and CHO HepB and Hansenula HepB groups were better than Saccharomyces cerevisiae HepB group. It is necessary to strengthen the propaganda and popularize the adult HepB vaccination so as to reduce the incidence of adult hepatitis B.

Objective To determine the sensitivity and specificity of ramification amplification method for detecting Shiga toxin and to determine the feasibility in detecting E. coli 0157: H7 and other shiga toxin-producing E. coli isolated from food and clinical specimens. Methods The sensitivity and specificity of RAM were compared with those of PCR by detecting synthetic Shiga toxin DNA target and isolates from food and clinical specimens. Results The lowest number of targets detected by RAM assay was 10 molecules. Several clinical isolates of E. coli 0157 :H7, Shigella dysenteriae and nonpathogenic E. coli were further tested. The results showed that E. coli 0157: H7 and Shigella dysenteriae were positive for shiga toxin gene,while nonpathogenic E. coli were negative. The results of RAM and PCR by detecting isolates were same. Conclusion RAM assay could be an alternative to PCR to detect STEC in food product and clinical specimens because of its high sensitivity and specificity , simplicity and isothermal amplification.

Objective To study the relationship of angiotensin Ⅱ type 1 receptor (AT1R) autoantibody (AT1-AA) and renal cell apoptosis induced by caspase-12 in diabetic nephropathy (DN)rats.Methods High-sucrose and high-fat diet and intraperitoneal injection of streptozotocin (35 mg/kg) were utilized to establish DN rat model.Serum AT1-AA was detected by enzyme-linked immunosorbent assay (ELISA) and renal cell apoptosis was detected by TUNEL staining.Furthermore,the mRNA levels of the endoplasmic reticulum stress (ERS) chaperone protein glucose regulated protein 78 (GRP78) and ERS-associated apoptosis protein caspase-12 were measured by real-time quantitative PCR.Additionally,the levels of GRP78 and caspase-12 protein were measured by Western blotting.Results The renal cell apoptosis rate in DN group was increased significantly (P ＜ 0.01),and the renal cells apoptosis rate in AT1-AA positive DN group was higher than that in AT1-AA negative DN group [(20.05±1.71)％ vs (13.24±4.93)％,P ＜ 0.01].The mRNA expressions of GRP78 and caspase-12 in DN group,in comparison to NC group,were increased significantly (P ＜ 0.01),as well as the proteins (P ＜ 0.01).And the expression of these mRNA and proteins had significant increment in AT1-AA positive DN rats when compared with AT1-AA negative DN rats (P ＜ 0.05).Conclusions AT1-AA can induce ERS in the renal tissue of DN rats,and promote renal cell apoptosis likely via the modulation of caspase-12 signaling pathway.

Objective To observe the effects of lysophosphatidic acid(LPA) on arrhythmia in acute myocardial infarction(AMI) rats.Methods AMI models were prepared by ligating the left coronary branch of rats.60 Wistar rats were divided into 5 groups:sham-operated(SO),AMI,AMI+LPA,AMI+pertussis toxin(PTX) and(AMI+)PTX+LPA.ECG were recorded,HR and VPBs were observed as important indexes.Results Incidence of tachycardia and VPBs of unit time in AMI group were increased compared with sham-operated group(P

Objective:To investigate the clinical effect of captopril combined with baling capsules in treating diabetic nephropathy.Methods:38 cases with diabetic nephropathy were treated with Captopril(12.5-25mg,tid) and baling capsules(1.0g,tid).24h urine-microscale albumin,triglyeride,total cholesterol,serum ureanitrogen and creatinine were measured and evaluated before and after the medication.Results:There were significant differences in the total cholesterol serum urea nitrogen and creatinine,but no significant differences in serum ureanitrogen and creatinine between the priortherapy and post-treatment.Conclusion:The levels of urinary albumin,triglyeride and total cholesterol were decreased. Captopril combined with baling capsules has its broad therapeutic and protective effects on patients with diabetic nephropathy.

Objective To investigate the effect and mechanism of EGFR in inducing vasculogenic mimicry (VM)formation.Methods Immunohistochemistry was used to detect the expression of EGFR protein and CD34-PAS double staining was used to detect the VM in gliomas paraffin blocks.The migration and VM formation of U87 cell in hypoxic and normoxic groups were detected by transwell and three-dimensional culture.Then we used Western blot to detect the expressions of EGFR,AKT and PI3K protein.Results The positive rate of EGFR expression in VM positive patients was 94.4%,which was significantly higher than that in VM negative patients (71.8%).In hypoxic group,the abilities of migration and VM formation were significantly higher those in normoxic group.The expressions of EGFR,AKT and PI3K were higher in hypoxic group.Conclusion VM formation can be induced by the activation of EGFR/AKT/PI3K signaling pathway.EGFR is very important for VM formation.

Objective: To analyse the behavioral problems of children with attention deficit hyperactivity disorder.Methods: 70 boys fulfilled ADHD criteria of DSM-IV were further divided into 3 subtypes: predominantly inattentive(PI,44 cases),predominantly hyperactive-impulsive(HI,6 cases) and combined type(CT,20 cases).Compare the behavioral problems of subtypes of ADHD and 63 normal children.Results: The incidence of behavioral problems in boys with ADHD(48.57%) was significantly higher than that in control group(12.70%),and significant differences in incidence of behavioral problems were found among the three subtypes of ADHD.ADHD CT subtype had the highest rate of behavioral problems.PI subtype had more fissility than HI;CT and HI subtypes had more aggressive behaviors,and HI had more delinquence than PI and CT.Conclusion: Boys with ADHD had more behavioral problems than normal ones.CT subtype had the highest rate.The characteristics of behaviors were different among three subtypes.

Objective:To investigate communication and adaptive function of children with Asperger Syndrome (AS).Methods:The adaptive function of two groups,123 with AS and 23 normal, were investigated with Adaptive Ability Scale for Children; Intelligence were measured with WISC; Communication behaviors of AS children were also investigated. Results:Significant differences were found between the two groups in total score of adaptive abilities and in domains of socialization, communication and self-administration; Abnormal communication behaviors were found in AS children。Conclusion: AS children demonstrated abnormal communication behaviors and deficits in social adaptive abilities.Early diagrosis and intervention can reduce children's adaptive trouble after entering school.

Objective To observe the effect of Exendin-4 on the apoptosis of cardiomyocyte induced by H2O2,and approach the relationship between GLP-1 signal pathway and the injury of cardiomyocyte.Methods Cardiomyocytes were isolated and cultured,and were divided into 5 groups.Intercelluar ROS (reactive oxygen species) was measured,and cell apoptosis rate was evaluated by Flow cytometry in different groups.Also expressions of apoptosis-associated proteins (caspase-3) and PI3 K/AKT were evaluated by western blot.Results Compared with H2O2 group,Ex-4 co-incubation decreased the production of intercelluar ROS levels,also improved the cardiomyocyte apoptosis.At the same time,Ex-4 resulted in the alterations in expressions of the caspase-3 and p-AKT/AKT proteins.However,these effects of Exendin-4 were counteracted significantly by the co-incubation of LY294002.Conclusion The interventions of GLP-1 signal pathway can improve cardiomyocyte apoptosis induced by H2O2 incubation,and the mechanisms might partly attribute to the PI3K/AKT system.

Objective To develop a sensitive, specific, rapid and easy method for detecting E. coli O157 : H7 and other Shiga toxin-producing E. coli in food and clinical specimens. Methods A circular probe and capture probe specific for Shiga toxin-2 (stx2) gene had been synthesized and was used for determining the sensitivity of ramification amplification method (RAM). Different serotypes which contained stx2 gene, including an E. coli O157 : H7, an E. coli O46 : H38, an E. coli O111 : NM, an E. coli O22 : H8 and E. coli ATCC23716 (stx2 gene negative) were used for determining the specificity. All strains were detected by RAM to determine whether they contained stx2 gene. Real-time RAM was further studied to detect stx2 gene. Results The lowest number targets detected by RAM assay was 10 copies of stx2, indicating that RAM assay was as sensitive as conventional PCR. The result of specificity showed that different serotypes of strains were all positive for stx2 gene, while nonpathogenic E. coli ATCC23716 was negative. Among 32 isolates, 28 STEC isolates containing stx2 gene were positive by RAM assay, while others were negative. The RAM results were 100% in concordance with that of PCR. The real-time RAM results also showed that as many as 10 bacteria can be detected and the time of appearance of detectable signal was depended on the target concentration. Conclusion RAM assay can offer an alternative method for PCR to detect E. coli O157 : H7 and STEC in all types of specimens because of its simplicity and isothermal amplification.