Objective To investigate the correlation among HBV infection models,HBV Pre-S1 antigen and HBV DNA loads in serum and to provide evidence for the diagnosis and treatment of hepatitis B.Methods Hepatitis B markers,HBV Pre-S1 antigen and HBV DNA loads in serum samples were detected simultaneously for 1037 cases.Results The positive rate of HBV Pre-S1 antigen was higher in HBsAg,HBeAg and HBcAb positive model than that in other models(P0.05).Conclusion The quantitative detection of HBV DNA is important for the prevention of HBV infection.The combination assay of serum HBV markers,Pre-S1 antigen and HBV DNA load was beneficial to the monitoring of disease condition of hepatitis B and to the improvement of therapeutic effect.

Objective To investigate the change of peripheral blood lymphocyte immunophenotype in the patients with malignant carcinoma and its clinical significance .Methods The flow cytometry was adopted to detect the expression levels of peripheral blood T lymphocyte subpopulations ,CD19+ cells ,CD3-CD56+ cells ,CD3+CD56+ cells in 167 patients with malignant carcinoma (inclu‐ding respiratory tract cancers ,gastrointestinal cancers and reproductive system cancer) and 170 normal controls as the healthy con‐trol group .The contrastive analysis was performed .Furthermore the analysis was conducted according to whether having tumor me‐tastasis and chemotherapeutic cycles .Results The total absolute value of the lymphocytes and the proportion of CD3+CD4+ cells in the patients with malignant carcinoma were significantly lower than those in the healthy control group (P<0 .05) ,but the propor‐tions of CD3+CD8+ ,CD3+CD56+ and CD3-CD56+ cells were significantly higher than those in the healthy control group (P<0 .05) .The proportion of CD3+CD4+ cells in the patients with tumor metastasis were significantly lower than those in the ones without tumor metastasis ;but the proportions of CD3+ CD8+ ,CD3-CD56+ and CD3+ CD56+ cells were significantly higher than those in the ones without tumor metastasis ,the differences were statistically significant(P<0 .05) .In the chemotherapy treatment , the proportions of CD3+CD4+ ,CD3+CD56+ and CD3-CD56+ cells were gradually increased with the increase of chemotherapeutic cycles ,but the proportion of CD3+CD8+ cells was gradually reduced .Conclusion In the process of development ,progression and treatment of tumor ,the cellular immunity function plays a dominant role ,which could be used as one of indexes for clinically moni‐toring the cellular immune function in the patients with tumor .