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  • Title: [Serum HBsAg concentration and HBV replication level in hepatitis B patients with positive serum HBsAg and HBeAg].
    Author: Lei JH, Yang X, Luo HY, Wang WL, Huang L.
    Journal: Zhong Nan Da Xue Xue Bao Yi Xue Ban; 2006 Aug; 31(4):548-51. PubMed ID: 16951515.
    Abstract:
    OBJECTIVE: To analyze the relationship between serum HBsAg concentration and HBV replication level in hepatitis B patients with positive serum HBsAg and HBeAg, and to explore the possibility of using serum HBsAg concentration as a marker of HBV replication level in hepatitis B patients with positive serum HBeAg. METHODS: HBV DNA level and serum HBeAg, HBsAg concentration of 296 patients with positive serum HBsAg and HBeAg were quantitatively detected by real-time fluorescence quantitative PCR (FQ-PCR) and time-resolved fluoroimmunoassay (TRIFA) respectively. HBsAg concentrations were compared among patients with different HBV DNA levels, and HBV DNA levels were compared among patients with different HBsAg concentrations. The correlation between serum HBsAg concentration and DNA replication level were analyzed. The positive, negative predictive values and coincidence rates were speculated by various HBsAg concentrations. RESULTS: If HBV DNA positive was defined as HBV DNA levels no less than 10(5) copy/mL, then 228(77.03%) patients were classified as HBV DNA positive. HBsAg concentration was positively correlated with HBV DNA replication level, but among groups with various DNA replication levels, HBsAg concentration showed no significant statistical difference (P>0.05). If the patients were divided into 2 groups, HBsAg concentration (180 microg/L) was served as the cutoff level, the DNA positive rate of the group with HBsAg concentration no less than 180 microg/L was significantly higher than that with HBsAg concentration less than 180 microg/L (chi(2)=3.998, P<0.05). DNA positive rates and average DNA levels showed no significant statistical differences between the 2 groups, if HBsAg concentrations other than 180 microg/L were used as the cutoff level. Positive predictive values, negative predictive values and the coincidence rates speculated by various HBsAg concentrations as cutoff values did not show any significant statistical difference in estimating HBV replication levels. CONCLUSION: To some extent, serum HBsAg concentration is related to HBV DNA replication level in hepatitis B patients with positive serum HBsAg and HBeAg, but it is not feasible to use HBsAg concentration to monitor their HBV replication levels.
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