Objective To explore immune effects of HB vaccine and relative strategies of controlling hepatitis B in adults of different ages, genders, and different anti-HBs levels before immunization. Methods In Shaoxing city, 1055 healthy adults aged 18 to 50 with HBsAg negative were randomly selected and inoculated with 10?g/ml indigenous CHO HB vaccine according to the programme of 0,1,6 months. Results 835 adults completed the whole programme, and the total immunization coverage rate was 85.12%. Before and after immunization,the positive rates of anti-HBs were 52.10% and 98.44% respectively, and anti-HBsGMT rose from 14.32mU/ml to 413.98mU/ml. For the two groups, anti-HBsGMT=0 and 0

Objective Analyze hepatitis B virus(HBV)infection condition in adults,and provide scientific basis for building immune effects of HB vaccine in adults.Methods In Shaoxing city,randomly select 1309 adults between the age of 18 and 50,draw their venous blood and test HBsAg,anti-HBs and anti-HBc.Results 1236 adults completed the test and the testing rate was 94.42%.The positive rate of HBsAg was 7.61%,9.92% in men and 4.53% in women.Positive rates of HBsAg of different genders and ages showed significant difference(?2=12.49,P

In order to explore the effect and its mechanism of paeoniflorin on PD-L1, a PD-L1 high expression cell model was established in interferon gamma(IFN-γ)-induced HepG2 cells. The cytotoxicity of paeoniflorin was detected by MTT assay. Flow cytometry, ELISA and RT-PCR were performed to detect protein and mRNA levels of PD-L1 regulated by paeoniflorin. In HepG2 cells and Jurkat T cell co-culture system, the expression of IL-2 was detected by ELISA. Besides, T cell proliferation was evaluated by CCK-8 method, and the protein expression levels of PD-L1, JAK and STAT3 after drug treatment were determined by Western blot. These results indicated that paeoniflorin could significantly down-regulate the levels of PD-L1 protein and mRNA. In addition, it increased the number of T cells and the concentration of IL-2 in the co-culture system. Furthermore, paeoniflorin could significantly inhibit the protein expression of JAK and STAT3. Au the above experimental data indicated that paeoniflorin could down-regulate the expression of PD-L1, and its mechanism might be related to the JAK/STAT3 pathway.