Objective:To investigate the Th1 type immune response effects of CpG oligodeoxynucleotide(CpG ODN) immunized with recombinant hepatitis B surface antigen(rHBsAg).Methods:The CpG ODN and rHBsAg were injected into the back leg tibialis anterior(TA) muscle of BALB/c mice for two times.The serum anti-HBs IgG sub-class ratio of IgG2a/IgG1 were detected by ELISA.The level of IFN-?,IL-2 and IL-12 in the supernatant of induced splenocyte with bioactived assay.The serum IL-4 and IL-10 level were detected by ABC-ELISA.Results:The anti-HBs IgG sub-class IgG2a titer of additional CpG ODN groups are obviously higher than those of other groups;The result showed that high level of Th1 type cytokines including IL-2,IFN-? and IL-12 were induced in CpG ODN groups,where the level of Th2 type cytokines such as IL-4 and IL-10 were inhibited obviously.Conclusion:CpG ODN has enhanced efficacy of rHBsAg for anti-HBs IgG sub-class production of IgG2a and induced the expression of Th1 type cytokines wherease inhibited the expression of Th2 type cytokines.

Objective:To investigate the effects of lymphocyte proliferation using the synthetic oligodeoxynucleotide containing CpG motif(CpG ODN) as immunal adjuvant immunized with the recombinant hepatitis B surface antigen(rHBsAg) in mice.Methods:BALB/c mice were randomly divided into five groups,injected into back leg tibialis anterior(TA) muscle for two times.The spleen and thymus lymphocytes proliferation was tested by MTT and()~3H-TdR incorporation respectively.Results:Analytical study showed that all groups compared with control the proliferation of spleen and thymus lymphocytes was increased obviously,except the specific proliferation of thymus lymphocyte there didn't obviously difference in CpG ODN plus vaccine group and the vaccine group.Meanwhile,the proliferation of the groups plus CpG ODN was much stronger than the not-CpG ODN groups in all the tests.Conclusion:CpG ODN has the ability stimulating the lymphocyte proliferation in mice obviously anti could have potential adjuvant effectiveness.

Objective:To investigate the effect of synthetic oligodeoxynucleotide containing CpG motifs (CpG ODN) on antibody production to recombinant hepatitis B surface antigen (rHBsAg) or hepatitis B vaccine respectively. Methods:The antigens were injected into the back leg tibialis anterior(TA) muscle of all the mice (Km breed and Balb/c breed) for two times.The serum anti HBs titers were detected by ELISA.Results:The anti HBs titers of additional CpG ODN groups are obviously higher than those of rHBsAg group or vaccine group alone, the antibody persistent time is some longer. Nevertheless, the anti HBs titers of pure breeding mice are significantly higher than those of non pure breeding mice. Conclusion:CpG ODN has enhanced efficacy for anti HBs production in immunized mice and synergetic effect can be observed in alum adjuvant of hepatitis B vaccine.

Objective To determine the effects of sexual hormone therapy at varied doses on prevention of bone mineral loss in Chinese postmenopausal women. Methods From March 2002 to March 2003, 90 Chinese postmenopausal women were randomly divided into three groups, each given one of the following regiments for 12 months, estradiol valerate (EV) 1 mg plus medroxyprogesterone (MPA) 2 mg for group A (31 subjects), eonjngated estradiol (ethinylestradiol-3-cyclopentylether, CEE) 0.45 mg plus MPA 2 mg for group B (29 subjects) and livial 1.25 mg for group C (30 subjects), respectively. In addition, 400 mg of elemental calcium were given daily to all those women. Bone mineral density (BMD) of the 2nd to 4th lumbar vertebra (L2～4) and biochemical markers of bone turnover, urine N-telopeptide of type Ⅰ collagen/creatinine(NTX/Cr) and serum total alkaline phnsphatase (ALP), were measured before and after drug administration. Results After treatment for 12 months, BMD of the L2～4 increased significantly by 0.039 g/cm2(P<0.01) in group B, but not significantly in group A or group C (P<0.05). Increases in BMD of the L2～4 was more in group B than that in group A and group C, respectively (P < 0.05), but no significant difference in BMD increase between group A and group C was found (P >0.05). After treatment for 6 months, urine NTX/Cr reduced from the baseline for all the three groups (P < 0.05), but no significant difference among group A, group B and group C was found (P >0.05). After treatment for 12 months, serum ALP significantly reduced from the baseline for all the three groups (P <0.01), but no significant difference among group A, group B and group C wag found (P > 0.05). Conclusions Sexual hormone therapy at varied doses lower than regular one for 12 months was effective in preventing bone mineral less in postmenopausal women.

One hundred and five patients with non-ST segment elevation acute coronary syndrome were followed up for 1 year.They were assigned to the event group or non-event group according to the presence of endpoint events(cardiac death and nonfatM myocardial infarction).B-type natriuretic peptide level was measured at 30 days and 1 year and compared between the two groups.The results showed that the level of B-type natriuretic peptide was higher in the event group[(235±107)μg/L vs(154±49)μg/L at 30 days;(259±100)μg/L vs(143±57)μg/L at 1 year].Thus,B-type natriuretic peptide is an important prognostic factor for patients with non-ST segment elevation acute coronary syndrome.

Objective:To evaluate the effectiveness and safety of most common used regimens against brucellosis.Methods: Search PubMed and CENTRAL database of Cochrane library for all literatures written in English about treatment of brucellosis and CBM database for all RCTs for Brucellosis in Chinese from the year 1985 till now.Assess the quality of the included literatures using Cochrane Collaboration Risk of Bias form.Combine data of relapse,total therapeutic failure,and adverse reaction of regimens for treating human brucellosis.Results: 17 literatures were included.Combined antibiotic therapeutic regimens such as DR,DS,QR and DG were compared.Rate of total therapeutic failure(RRcb:2.53,95%CI:1.51-4.23) and relapse(RRcb:2.69,95%CI:1.46-4.98) of DS regimen was lower than those of DR regimen,while adverse reaction did not show any significant differences between them(RRcb:1.40,95%CI:0.97-2.01).No significant differences were seen in rate of relapse(RRcb:1.24,95%CI:0.67-2.30) and total therapeutic failure(RRcb:1.41,95%CI:0.86-2.32) between QR and DR regimen.QR regimen had lower rate of adverse reaction than DR regimen(RRcb:1.79,95%CI:1.17-2.74).Conclusion: DS regimen priors to DR regimen.QR equals DR in treatment outcome,has fewer adverse reactions meanwhile.Triple antimicrobial based on double regimens seemed to provide better outcomes without a significant increase in adverse reaction,but more clinical evidences are still needed.

Objective To examine the role of adenovirus cytotoxic T lymphocytic associated antigen 4(Ad-CTLA4Ig) in treatment of induced Sjogren syndrome(SS) in mice.Methods SS was induced in 30 BALB/c mice by challenging with the mixture of homologous antigen from submandibular gland tissues and complete freunds adjuvant(CFA).Two hours after challenge,Ad-CTLA4Ig was intraperitoneally injected in the experimental mice(n=10),while thymic peptide in control mice(n=10).Morphological changes of submandibular gland,water intake and static total saliva flow rate of each group were observed.Results There was no obvious pathological change in Ad-CTLA4Ig treated group,in which the static total saliva flow rate was significantly higher than that in control groups(P

Objective:To investigate the expression pattern of 14 innate immunity related microRNAs ( miRNAs) in brucellosis patients.Methods:By using Real time PCR assay, expression levels of 14 miRNAs in serum samples from brucellosis patients and healthy volunteers were analyzed.Results: Of the 14 miRNAs tested, 13 showed decreased expression in brucellosis patients.And significant Ct differences over one were observed for nine of the miRNAs.In them,five miRNAs,including miR-122,miR-145a,miR-155,miR-301a and miR-146a levels significantly decreased in brucellosis patients (P<0.01).Conclusion:Decreased serum levels of miR-122,miR-145a,miR-155,miR-301a and miR-146a are confirmed and may serve as novel biomarkers for human brucellosis diagno-sis.

Aim To investigate the effects of tyrosine kinase inhibitor A77-1726 on IL-13 induced STAT6 phosphorylation and c-fos expression in Dami cell and to provide novel experimental basis to the clinical application of A77-1726 and the study of IL-13 pathway.Methods Total RNA was extracted from Dami cells incubated with or without IL-13 and A77-1726 respectively for various time points.RT-PCR and agar gel electrophoresis were used to examine the expression of c-fos mRNA.The expression of STAT6 and c-fos proteins was detected by Western blot.A densitometric rel-ative quantitation of PCR and Western blot products was quantitated using Image Quant software.Results STAT6 was phosphorylated by treatment of 100 ?g?L-1 IL-13 in Dami cells.Phosphorylation of STAT6 induced by IL-13 was inhibited by treatment of 50?mol?L-1 A77-1726.The expression of c-fos mRNA was significantly induced by IL-13 treatment in Dami cells(P

Objective:To investigate the expression pattern of microRNA-146a in Brucella patients and its correlation with antibody titers.Methods: By using real time PCR assay, expression levels of microRNA-146a in sera samples from 20 brucellosis patients and 20 healthy volunteers were analyzed.The correlation between expression level of microRNA-146a and serum antibody titers were analyzed with SPSS17.0.Results: A quantification curve of microRNA-146a was constructed with synthesized standard.Expression levels of microRNA-146a among brucellosis patients were significantly lower than those in 20 healthy volunteers (P<0.001).For brucellosis patients,the expression level of microRNA-146a was negatively related with antibody titers (P<0.05). Conclusion:Expression of miRNA-146a in brucellosis patients was significantly inhibited and negatively related with antibody titer.