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  • Title: Serum hepatitis B surface antigen is correlated with intrahepatic total HBV DNA and cccDNA in treatment-naïve patients with chronic hepatitis B but not in patients with HBV related hepatocellular carcinoma.
    Author: Wang M, Qiu N, Lu S, Xiu D, Yu J, Wang XT, Lu F, Li T, Liu X, Zhuang H.
    Journal: J Med Virol; 2013 Feb; 85(2):219-27. PubMed ID: 23168998.
    Abstract:
    The aim of the study was to investigate correlations between intrahepatic hepatitis B virus total DNA, covalently closed circular DNA (cccDNA), and serum HBsAg in treatment-naïve chronic hepatitis B and HBV related hepatocellular carcinoma (HCC). Liver tissues were taken from 42 HBV related HCC and 36 patients with chronic hepatitis B. A fraction of DNA extracted from liver tissue was digested with a plasmid-safe ATP-dependent DNase and used for HBV cccDNA detection. The remaining DNA was used for the detection of HBV total DNA and β-globin, the latter of which is a housekeeping gene and quantified for normalization by real-time PCR. Quantitation of serum HBsAg was performed by a chemiluminescence assay. Serum HBsAg had positive correlations with serum HBV DNA (r = 0.636, P < 0.001), intrahepatic HBV total DNA (r = 0.519, P = 0.001) and cccDNA (r = 0.733, P < 0.001) in 36 treatment-naïve chronic hepatitis B, while HBsAg correlated poorly with DNA (r = 0.224, P = 0.210), intrahepatic total DNA and cccDNA in the tumor (r = 0.351, P = 0.031; r = 0.164, P = 0.324, respectively) and non-tumor (r = 0.237, P = 0.152; r = 0.072, P = 0.667, respectively) liver tissues of 42 HCC. HBV cccDNA and total DNA were significantly higher in liver tissue from chronic hepatitis B than in tumor and non-tumor of HCC (P < 0.001). Serum HBsAg and HBV DNA were also higher in chronic hepatitis B than in HCC (P < 0.001). It was concluded that levels of serum HBsAg and intrahepatic cccDNA and total DNA were significantly higher in chronic hepatitis B than in HCC, and significant correlations among them were observed in treatment-naïve chronic hepatitis B but not in HCC.
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