Abstract
To explore the relationship of HBV PreS1 antigen, anti-HBc IgM, DNA load and genotypes, and the significance for clinical diagnosis and prognostic. 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. 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. 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.
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