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Interference of replication between hepatitis B and C viruses in patients infected with HIV

Rong-Rong Yang1, Xien Gui, Xue-Yuan Chen

  • 1Department of Infectious Diseases, Zhongnan Hospital of Wuhan University, Wuhan, China.

Journal of Medical Virology
|May 14, 2011
PubMed

Insights

Investigating human immunodeficiency virus (HIV) co-infections reveals hepatitis B virus (HBV) and hepatitis C virus (HCV) interactions. Antiretroviral therapy impacted viral loads, with HBV DNA decreasing and HCV RNA increasing in co-infected patients.

Area of Science:

  • Virology
  • Immunology
  • Hepatology

Background:

  • Hepatitis B virus (HBV), hepatitis C virus (HCV), and human immunodeficiency virus (HIV) are significant global health concerns.
  • Co-infection with these viruses presents complex clinical challenges and impacts disease progression.
  • Understanding viral interactions is crucial for effective management strategies.

Purpose of the Study:

  • To investigate the clinical and cellular interactions between HBV and HCV in HIV co-infected patients.
  • To compare viral loads of HBV DNA and HCV RNA in different co-infection scenarios.
  • To examine the in vitro impact of HBV and HCV co-infection on viral replication.

Main Methods:

  • A 6-year longitudinal study of 199 HIV-positive patients with varying HBV and HCV co-infection statuses.
  • Analysis of HBV DNA and HCV RNA levels before and after initiating 3TC-based antiretroviral therapy (ART).
  • In vitro co-transfection of HBV and HCV in HuH-7.5.1 cells to study replication dynamics and the role of HBV PreC mutations.

Main Results:

  • Before ART, HBV DNA was detected in 45.4% of HIV/HBV patients and 25.0% of HIV/HBV/HCV patients.
  • After ART initiation, detectable HBV DNA significantly decreased in HIV/HBV/HCV patients (9.2%).
  • Conversely, HCV RNA levels increased significantly in HIV/HBV/HCV patients after ART (from 56.6% to 78.9%, P = 0.003).
  • In vitro studies showed that HBV and HCV co-infection led to reduced replication of both viruses, influenced by infection order and HBV PreC mutation.

Conclusions:

  • HIV co-infection significantly alters HBV and HCV dynamics, particularly in response to ART.
  • Antiretroviral therapy can suppress HBV replication but may lead to an increase in HCV RNA levels.
  • Viral interference during HBV/HCV co-infection in vitro is dependent on infection sequence and specific HBV mutations.

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