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Smaller reduction of hepatitis B virus DNA in liver tissue than in serum in patients losing HBeAg

Artikel i vetenskaplig tidskrift
Författare Gianluca Tripodi
Simon B. Larsson
Gunnar Norkrans
Magnus Lindh
Publicerad i Journal of Medical Virology
Volym 89
Nummer/häfte 11
Sidor 1937-1943
ISSN 0146-6615
Publiceringsår 2017
Publicerad vid Institutionen för biomedicin, avdelningen för infektionssjukdomar
Sidor 1937-1943
Språk en
Länkar doi.org/10.1002/jmv.24841
Ämnesord HBV DNA, HBsAg, integration, intrahepatic, liver biopsy, rcDNA, hbv dna, surface-antigen, hepatocellular-carcinoma, infected patients, natural-history, hbsag, integration, cccdna, therapy, disease, Virology
Ämneskategorier Infektionsmedicin

Sammanfattning

The prognosis and outcome of treatment for chronic hepatitis B virus (HBV) infection are predicted by levels of HBV DNA in serum. These levels are composed of relaxed circular DNA (rcDNA) and double stranded linear DNA in viral particles, whereas, HBV DNA in liver tissue also can be covalently closed circular DNA (cccDNA) or integrated into the human genome. The aim of this study was to investigate the quantitative relation between HBV DNA in serum and tissue, its change over time and how these markers relate to serum levels of hepatitis B surface antigen (HBsAg). Serum and liver biopsies taken from 15 patients with chronic HBV infection on two occasions during 2.7-11.1 years were analyzed retrospectively. At baseline, the median HBV DNA levels in serum were 7.76 log(10)IU/mL in nine hepatitis B e antigen (HBeAg) positive and 3.65log(10) IU/mL in six HBeAg-negative patients. At follow-up, serum HBV DNA, serum HBsAg, and intrahepatic HBV DNA (ihDNA) levels had declined by 4.36, 0.52, and 1.47log(10) units, respectively, in seven patients that lost HBeAg, whereas the corresponding reductions were 0.36, 0.30, and 0.39log(10) units in eight patients with unchanged HBeAg status. We conclude that HBV DNA in liver tissue declined almost 1000 times less than HBV DNA in serum during and after loss of HBeAg. This finding raises the possibility that integrated sequences constitute a significant part of the ihDNA. Alternatively, the greater decline of HBV DNA in serum might be due to yet unknown mechanisms acting downstream of reverse transcription.

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Utskriftsdatum: 2019-10-19