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A Competent Hepatocyte Model Examining Hepatitis B Virus Entry through Sodium Taurocholate Cotransporting Polypeptide as a Therapeutic Target
Published on: May 10, 2022
Management of patients co-infected with hepatitis B virus and HIV
Marina Núñez1, Vincent Soriano
1Service of Infectious Diseases, Hospital Carlos III, Madrid, Spain. m_nunez_g@hotmail.com
Insights
Managing chronic hepatitis B virus (HBV) infection with HIV co-infection requires careful drug selection. Tenofovir and emtricitabine offer broad antiviral activity against HBV in co-infected patients.
Area of Science:
- Hepatology
- Virology
- Infectious Diseases
Background:
- Chronic hepatitis B virus (HBV) infection management is complex in patients with human immunodeficiency virus (HIV) co-infection.
- Therapeutic strategies must address both viral infections simultaneously.
Purpose of the Study:
- To review current therapeutic options for chronic HBV infection in the context of HIV co-infection.
- To highlight the role of specific antiviral drugs in managing HBV/HIV co-infected patients.
Main Methods:
- Review of approved drugs for chronic HBV infection.
- Discussion of antiviral properties and resistance profiles of nucleoside and nucleotide analogues.
- Consideration of interferon-based therapies.
Main Results:
- Tenofovir and emtricitabine possess dual antiviral activity, expanding treatment options for HBV/HIV co-infected individuals.
- Nucleotide analogues (adefovir, tenofovir) offer a higher genetic barrier to resistance than nucleoside analogues (lamivudine, emtricitabine).
- Absence of cross-resistance between nucleoside and nucleotide analogues facilitates salvage and combination therapies.
Conclusions:
- Pegylated interferon alfa shows promise for HBV/HIV co-infected patients, despite generally poorer responses compared to HIV-negative individuals.
- Combination therapy and salvage options are available due to distinct resistance profiles of different drug classes.
- Careful consideration of drug interactions and resistance is crucial for effective HBV/HIV co-infection management.
Abstract:
The management of chronic hepatitis B virus (HBV) infection poses specific problems in the presence of HIV co-infection, since therapeutic approaches have to consider both HBV and HIV infections. There are currently four drugs approved for the treatment of chronic HBV infection (interferon alpha, lamivudine, adefovir, and entecavir); the dual antiviral activity of tenofovir and emtricitabine broadens the armamentarium against HBV in HBV/HIV co-infected patients. Nucleotide analogues--eg, adefovir and tenofovir--have the advantage of a higher genetic barrier to the development of resistance compared with nucleoside analogues--eg, lamivudine and emtricitabine. Fortunately, the two families do not share resistance mutations, allowing salvage therapy and the possibility of combination therapy for drug-naive individuals. Although response to interferon alpha is poorer in HBV/HIV co-infected patients compared with HIV-negative individuals, especially in hepatitis B e antigen-negative HBV infection, the more potent pegylated forms of interferon alpha have brought new hope.
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