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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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Immune Response Against Viral Pathogens

The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
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Inhibitors Of Virion Release01:25

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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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Antimicrobial proteins are important components of the immune system. They aid the body in combating pathogens by either killing them directly or hindering their replication processes. Four main types of antimicrobial substances are interferons, the complement system, iron-binding proteins, and antimicrobial proteins.
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[Interferon system in viral hepatitis].

M Lisker Melman1

  • 1Departamento de Gastroenterología y Clínica de Hígado, Instituto Nacional de la Nutrición "Salvador Zubirán", Vasco de Quiroga núm. 15, México 14000, DF México.

Revista De Investigacion Clinica; Organo Del Hospital De Enfermedades De La Nutricion
|March 5, 2009
PubMed
Summary
This summary is machine-generated.

Interferons are proteins that fight viral infections. Now purified and available for trials, interferons show promise in treating chronic viral hepatitis.

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Area of Science:

  • Immunology
  • Virology
  • Biochemistry

Context:

  • Interferons (IFNs) are crucial host-derived proteins mediating cellular defense against viral infections and other stimuli.
  • Three main types—alpha, beta, and gamma—are distinguished by structural, biochemical, and antigenic properties.
  • IFNs play a vital role in limiting viral spread, reducing viremia, and mitigating the severity of acute systemic infections.

Purpose:

  • To summarize the role and therapeutic potential of interferons.
  • To highlight the advancements in interferon production and availability for clinical use.
  • To underscore the promise of interferons in managing chronic viral hepatitis.

Summary:

  • Interferons are a class of host-derived proteins with antiviral properties, categorized into alpha, beta, and gamma types.
  • Historically, challenges with natural interferon production (shortage, cost, purity) have been overcome, enabling clinical applications.
  • Purified interferons are now accessible for clinical trials, demonstrating significant potential against chronic viral hepatitis.

Impact:

  • Overcoming production challenges has made interferons clinically viable.
  • Interferons represent a promising therapeutic avenue for chronic viral hepatitis.
  • Advancements in interferon availability facilitate further research and clinical application in virology and immunology.