Intralipid is a kind of important fat emulsion.It has been widely used clinically in severely ill patients,especially in the patients before and or after major operation since the 1980s.After retrieving the papers on Intralipid form MEDLINE CD ROM database from 1980 to 1994 and analysing them by linear regression analysis in literature metrology,We found a significant linear correlation between the yearly literature quantity and the dynamic time course (year).From 1980 to 1994,the average yearly growth rate of the literature was 1.16.According to the regression equation,it is predicted that the literature on Intralipid will increase at a rate of 2.07% per year.From this analysis,we think that the research of Intralipid is tending to stability and will be wonderful.

Objective To assess the association of 5-hydroxytryptamine 2A (5-HT2A) receptor gene polymorphism with schizophrenia by Meta analysis.Methods Literatures on the relationship between 5-HT2A receptor gene polymorphism T102C and the Chinese schizophrenia in EMBASE,PubMed,CBM,CNKI and Wanfang Med Online were taken as research objects.Screening the relevant data according to the included and excluded standard,then,Software of RevMan 5.0 was employed to do Meta analysis.Meanwhile,we inspect the literatures publication bias.Results Twelve literatures were included,collecting 4 728 individuals,enrolling 2 135 for the schizophrenia group and 2 593 for the control group.The research conforms to Hardy Weinberg equilibrium (all P＞0.05).The Meta analysis results showed that there was no significant association between 5-HT2A receptor gene polymorphism and schizophrenia including the allele model,recessive model and codominant model genotypes (all P＞ 0.05).The results of Dominant genetic model I2 =45％ with moderate heterogeneity,but we used subgroup analysis to remove the author Ni's data,there were significant difference analysis (I2=9％,Z=2.01,P＜0.05).Conclusions 5-HT2A receptor gene T102C site C allele is recessive genes,CC may be a healing factor,there needs evidence-based study provides further evidence.

Objective To explore the influential factors of the healthy lifestyle of college students, so as to provide basis for drafting the health education measure appropriate for college students. Methods 5400 college students received the assessment with the healthy lifestyle scale for college students to analyze the influential factors. Results Some factors affect the healthy lifestyles of college students, such as gender, temperament, self-rated health, self-rated achievement, type of college, grade, residential peer, birth region, educational levels of parents and family' s monthly-earning, and r -square for total score and each dimension of the healthy lifestyle of college students respectively were 0. 3202,0. 4173,0. 2104,0. 2247,0. 1936,0. 0922,0. 2013,0. 2181,0. 162. Conclusion Colleges should take different measures to stimulate student interest in taking health-promoting lifestyles based on their characteristics so as to develop healthy lifestyles during their college student life.

Objective To construct a prokaryotic expression system of norovirus (NoⅤ) G Ⅱ-4 strain P protein (P particle and P dimer) and to explore its binding activity and patterns with HBGAs receptor.Methods P domain sequence of GZ121 NoⅤ ORF2 gene was cloned and its phylogenic tree was constructed to identify the gene cluster.The pGEX-4T-1-based expression plasmids were constructed respectively by inserting P domain gene fragments with hinge and P-CDCRGDCFC without hinge,and then transformed into BL21 to express fusion proteins,which was induced with 0.6 mmol/L IPTG at 22℃ overnight.P proteins were purified by thrombin cutting and characterized by FPLC.The binding patterns of NoⅤ P protein to HBGAs antigens were analyzed by EIA.Results P region gene of GZ121 belonged to genotype G Ⅱ.4/2004 cluster.SDS-PAGE analysis showed the relative molecular weight of P particle and P dimer was about 36×103,which was consistent with other reports.The peak appeared at 830×103 confirmed the formation of P particle by FPLC.The expression of P protein was further confirmed by Western blot.The EIA results showed that GZ121 P protein could bind to saliva of A-group,B-group and O-group secretors,but not to nonsecretor.The binding affinity of P particle was 80-100 times higher than that of P dimer.Compared with VA387 P particle,it showed stronger binding affinity to O-group,but weaker to A-group.Conclusion The NoⅤ GⅡ-4 GZ121 P proteins including P particle and P dimer were successfully expressed and HBGAs receptor binding assays were established.This pave the way for further studies on the evolution dynamics of NoⅤ G Ⅱ.4 strains and the development of NoⅤ vaccines.

Objectives To study the effect of VIM in Enterovirus 71 (EV71) infection of (human brain microvascular endothelial cells (HBMEC) and elaborating the mechanism of EV71 infection in the nervous system. Methods Knocked out the VIM by CRISPR technology , the differences in EV71 absorption , replication , release between wild VIM and VIM knocked-out (VIM-KO) HBMEC were detected by fluorescence quantitative PCR. Results 4 ℃ absorption experiment conformed that EV71 adsorption in VIM- KO is 40% less than in the normal HBMEC. After EV71 infect HBMEC for 48 h (48 h p. i.), the quantitative PCR result showed intracellular viral RNA in VIM-KO was only 1/12 of that in the normal HBMEC. Also the extracellular viral RNA was quantified, and the number of cells in VIM-KO had been reduced 1.4 times compared with the normal HBMEC. Conclusions Once VIM knocking out, EV71 attachment has been obviously reduced. Meanwhile, the level of viral RNA replication and release are decreased compared with the normal HBMEC. VIM may be an attachment receptor of EV71 in HBMEC , when the virus invades HBMEC with the binding of VIM. Moreover , VIM plays an important role in the replication and release of EV71.

Objective To test the inhabiting effect of Lactobacillus acidophilus on E.coli O157: H7 in intestinal colonization and explore its mechanism. Methods The suppressive effects of Lactobacillus acidophilus against E.coli O157:H7 adhering to Ht29 cells were carried out by competition , exclusion and replacement as-says. Furthermore, we evaluated the cytokine levels of IL-4, IL-12, and INF-γ in serum of mice. In addition, E.coli O157:H7 fecal shedding was monitored and the pathological changes of intestines were observed in mice. Results The competition, exclusion and replacement assays showed Lactobacillus acidophilus inhibited E.coli O157:H7 adhering to Ht29 cells. In vivo, the mice of treatment group were induced significantly higher level of IL-4, IL-12, and INF-γ, though prevention group induced IL-12 only. Fifteen days after E.coli O157:H7 infec-tion, there were 8 mice (80%) in prevention group and 5 mice (50%) in treatment group stopped shedding. Moreover, the pathological changes of intestines of both prevention group and treatment group appeared normal , but control groups showed seriously damaged in intestinal villus. Conclusion Lactobacillus acidophilus inhibits E.coli O157:H7 in intestinal colonization and the preventative effect was better than treatment effect. Thus , Lac-tobacillus acidophilus can be used for E.coli O157:H7 in prevention and treatment infection as probiotics.

Objective To study the factors influencing epidemiological characteristics and virulence of Enterovirus 71 (EV71) in Guangdong province from 2008 to 2010. Methods RNA was extracted from collected samples or cultured virus , then reversing transcription into cDNA. We amplified full-length EV71-VP1 using poly-merase chain reaction technology , then conducted sequence alignment and established phylogenetic tree with MEGA software (version 5.0) to confirm the genotype of EV71. The association between severity of clinical symp-toms and sex, age, viral genotype and VP1 variation was also analyzed using Logistic regression. Results The genotype of the predominant epidemical strain was C4a in Guangdong from 2008 to 2010. However , this subtype had already differentiated into 4 subgroups (C4a1- C4a4). There was no correlation between clinical syndrome and sex or viral genotype; the severity of symptoms was negatively correlated with age: before 4 years old, varia-tion A289T can easily lead to severe cases, increasing the risk of infection (P<0.05, OR = 2.360, 95%CI:1.163~ 4.659). Conclusion The main epidemical EV71 strain is C4a1 in Guangdong province. The emerging differen-tiation and simultaneous prevalence should merit attention to strengthen relevant surveillance; and the protection of the susceptible population should be reinforced during EV71 prevalence.

Objective To identify the immune activity of the recombinant protein Preli minarily after expressing Tir C-ter minal of enterohemorrhagic Escherichia coli(EHEC) in E.coli BL21/DE3 efficiently. Methods Tir C-ter minal (marked as Tir-C)was amplified by PCR considering the result of Bioinformatics analysis of Tir. The recombinant plasmid(designed as PET-30a(+)-Tir-C)was identified by PCR,sequencing and digested by restriction endonucleases. The positive recombinants were transformed into E.coli BL21/DE3 and induced by IPTG to express the Tir-C. The Tir-C protein was detected by SDS-PAGE and identify the antigenic of the recombinant protein Preli minarily by Western blot. Results The 675bp DNA was gained. The plasmid PET-30a (+)-Tir-C was built. Tir-C was expressed mainly in supernatant of lysis and was purified by Ni+affinity chromatograghy. Concentration of the purified protein is about 500 μg/mL and a unique band was detected with the relative molecular mass of approximately 24KDa by Western blot. Conclusion The recombinant Tir-C was expressed successfully and had immunoreactivity to some extent, which deserves the investigations for vaccine against EHEC.

Objective To compare the efficacies of anatomic and nonanatomic mesohepatectomy for central type hepatocellular carcinoma.Methods The clinical data of 85 patients with central type hepatocellular carcinoma undergoing hepatectomies were retrospectively analysed.36 patients underwent anatomic mesohepatectomy and the other 49 patients did nonanatomic mesohepatectomy.The operative time,intraoperative blood loss,incidence of postoperative complications,postoperative drainage volume,time to flatus and length of postoperative stay between the two groups were compared.Results There were no significant differences in the general condition,organ function,tumor size and location between the two groups before operation (P ＞ 0.05).The intraoperative blood loss,incidence of postoperative complications,drainage volume were significantly less but the operative time longer in anatomic mesohepatectomy group than nonanatomic hepatectomy group (P ＜ 0.05).No differences between the two groups were found in regard to the time for flatus and length of postoperative hospital stay (P ＞ 0.05).Tumor recurrence developed in 7 cases in group A and 20 cases in group B (P ＜ 0.05).Conclusions Anatomic mesohepatectomy has the advantages of less surgical trauma,less exudation and complications in patients with central type hepatocellular carcinoma.

Randomization is the key to ensure the balance of confounders between the comparison groups in clinical trials, and it is the statistical basis for making the study results comparable. A simple randomization in a clinical trial with large sample-size allows for a balanced comparison of the number of subjects and confounding factors between groups, but in a clinical trial with small sample-size, it is necessary to use a restricted randomization method (the blocked randomization). Block randomization ensures that the number of subjects between groups is basically equal, maximize the effectiveness of clinical trials as the standard error of the treatment-effect estimate is decreased, which affords big rewards in scientific accuracy and credibility.