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Related Concept Videos

Inhibitors of Viral Protein Synthesis01:30

Inhibitors of Viral Protein Synthesis

Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
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Hepatitis is an inflammatory condition of the liver most commonly caused by hepatotropic viruses (A–E), though non-infectious causes such as alcohol and drugs also exist.Hepatitis AHepatitis A virus (HAV) is a non-enveloped RNA virus of the Picornaviridae family. It is primarily transmitted via the fecal-oral route, typically through ingestion of contaminated food or water. After ingestion, HAV enters the bloodstream through the oropharynx or intestinal epithelium and reaches the liver. The...
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Viral hepatitis is an inflammatory condition of the liver caused by infection with hepatotropic viruses, most commonly hepatitis A, B, C, D, and E. Despite variations in structure and transmission, all viruses mentioned infect hepatocytes and provoke immune responses that can hinder liver function. Additionally, some non-hepatotropic viruses can also lead to hepatic inflammation.Hepatitis A VirusHepatitis A virus (HAV) is transmitted through the fecal–oral route, typically by ingestion of food...
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Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
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Related Experiment Video

Updated: Jun 27, 2026

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons
09:11

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons

Published on: August 23, 2016

[Interferon in hepatitis B].

Luisa García Buey1, Fernando González Mateos, Ricardo Moreno Otero

  • 1Servicio de Aparato Digestivo, Unidad de Hepatología, Hospital Universitario de la Princesa, Universidad Autónoma de Madrid, España. lgarciabuey@medynet.com

Enfermedades Infecciosas Y Microbiologia Clinica
|December 23, 2008
PubMed
Summary
This summary is machine-generated.

Pegylated interferon-alpha (PEG-IFNalpha) offers effective treatment for chronic hepatitis B (CHB) with limited duration and no antiviral resistance. It shows promise, especially for specific genotypes, but has adverse effects and contraindications.

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Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection
11:14

Detection of Low Copy Number Integrated Viral DNA Formed by In Vitro Hepatitis B Infection

Published on: November 7, 2018

Area of Science:

  • Hepatology
  • Virology
  • Immunology

Background:

  • Chronic hepatitis B (CHB) is a global health issue affecting 350 million people.
  • CHB can lead to cirrhosis and liver cancer, causing nearly one million deaths annually.
  • Current therapeutic options for CHB include standard interferon-alpha (IFN-alpha), pegylated interferon-alpha (PEG-IFNalpha), lamivudine, adefovir, entecavir, and telbivudine.

Purpose of the Study:

  • To review the therapeutic options for chronic hepatitis B (CHB).
  • To highlight the advantages and disadvantages of interferon-based therapies.
  • To explore potential combination strategies for improved treatment outcomes.

Main Methods:

  • Review of existing literature on CHB treatments.
  • Analysis of efficacy and safety data for approved therapies.
  • Discussion of treatment response predictors and limitations.

Main Results:

  • PEG-IFNalpha is a first-line option for HBeAg(+) and HBeAg(-) CHB, offering limited treatment duration and higher sustained response rates than conventional IFN-alpha.
  • IFN-based therapies have antiviral and immunomodulatory effects, leading to greater HBeAg and HBsAg clearance.
  • Optimal response to PEG-IFNalpha is observed in patients with elevated transaminases, moderate viral load, and HBV genotypes A and B.
  • Adverse effects and contraindications exist, particularly in patients with decompensated cirrhosis.
  • Combination therapy with nucleos(t)ide analogs and PEG-IFNalpha may enhance sustained response rates but requires further investigation.

Conclusions:

  • PEG-IFNalpha is an effective treatment for CHB, offering advantages over conventional IFN-alpha.
  • Patient selection based on viral load, transaminase levels, and HBV genotype can optimize treatment response.
  • Further research is needed to determine the most effective combination therapeutic strategies for CHB.