ABSTRACT
OBJECTIVE: To explore the relationship of HBV PreS1 antigen, anti-HBc IgM, DNA load and genotypes, and the significance for clinical diagnosis and prognostic. METHODS: Enzyme linked immune-sorbent assay was used to test the HBV serum markers of HB patients; HBV-DNA copies was detected by time fluorescence quantitative PCR; using nested PCR to amplify the S fragment of HBV genome, then sequence and make blast with HBV standard sequences to ascertain genotypes. Make comprehensive analysis of these indexes. RESULTS: 355 serum specimens of acute or chronic HB patients were collected. The positive rates of HBV PreS1-Ag and HBV-DNA in model I (positive for HBeAg) were 80.2% and 73.7% respectively, which both higher than other models. The abnormal rate of ALT and AST were higher in PreS1-Ag positive group than negative, as well as in anti-HBc IgM positive group. There are 4 samples is genotype B (2.9%), 76 genotype C (55.9%) and 56 genotype D (41.2%). Positive rate of HBeAg and HBV-DNA of genotype C samples were both higher than which of genotype B and D. CONCLUSION: PreS1-Ag and Anti-HBe-IgM indexes are of great value to viral hepatitis B early diagnosis, HBV replication surveillance and prognostic evaluation; the major HBV genotypes in Henan province are C and D, and the positive rate of HBeAg and HBV-DNA were both higher in genotype C HBV infection population than genotype B and D.
