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  • Title: Replication and infectivity of hepatitis B virus in HBV-related glomerulonephritis.
    Author: Chen L, Wu C, Fan X, Gao J, Yin H, Wang T, Wu J, Wen SW.
    Journal: Int J Infect Dis; 2009 May; 13(3):394-8. PubMed ID: 19036623.
    Abstract:
    OBJECTIVE: To examine the presence of hepatitis B surface antigen (HBsAg), hepatitis B core antigen (HBcAg), and hepatitis B virus (HBV) covalently closed circular DNA (cccDNA) in renal tissues from patients with HBV-related glomerulonephritis. METHODS: Renal tissue biopsies taken from patients with HBV-related glomerulonephritis and two control groups were prepared for immunocytochemical detection of HBsAg and HBcAg. HBV cccDNA was examined using a nested PCR. RESULTS: Of the 63 HBV-related glomerulonephritis patients studied, HBsAg was present in the renal tissues of 48 (76.2%) and HBcAg in the renal tissues of 27 (42.9%). The HBsAg and HBcAg positive rates in HBV-related glomerulonephritis patients were higher than those of the 20 patients with non-HBV-related glomerulonephritis (p<0.05). However, there was no significant difference when the HBV-related glomerulonephritis patients were compared with 12 patients with renal tuberculosis, renal atrophy, renal calculus, and renal tumor with positive serum HBV markers. In patients with HBV-related glomerulonephritis, there was no significant difference in HBsAg and HBcAg positive rates in renal tissue between patients with and without serum hepatitis B e antigen (HBeAg). By nested PCR, two of five patients with HBV-related glomerulonephritis were positive for HBV cccDNA. CONCLUSION: The location and replication of HBV in renal tissue make the kidney a potential reservoir for HBV. HBV cccDNA may be key in the search for anti-HBV drugs.
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