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Rheumatic heart disease or RHD is a chronic condition that results from rheumatic fever, causing permanent damage to the heart valves.Etiology and Risk FactorsIt primarily arises from rheumatic fever, an inflammatory disease that can develop after untreated or inadequately treated group A streptococcal (GAS) pharyngitis. Streptococcus spreads through direct contact with oral or respiratory secretions. While the bacteria are the causative agents, factors like malnutrition, overcrowding, poor...
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Chronic liver disease significantly impacts drug metabolism due to alterations in hepatic blood flow and enzyme accessibility. This disruption affects the body's pharmacokinetics—the movement and processing of drugs within the system. Key enzymes crucial for metabolizing medications become less accessible, changing how drugs are processed and utilized. Furthermore, liver disease influences the synthesis of plasma proteins, such as albumin and globulins, which play critical roles in drug...
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Related Experiment Video

Updated: Feb 24, 2026

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Interplay between hepatitis C virus and ARF4.

Na Zhang1, Youyang Ke2, Leiliang Zhang3

  • 1MOH Key Laboratory of Systems Biology of Pathogens, Institute of Pathogen Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100176, China.

Virologica Sinica
|August 26, 2017
PubMed
Summary
This summary is machine-generated.

Hepatitis C virus (HCV) infection upregulates ARF4, a host factor promoting viral replication. Activated CREB3 drives ARF4 transcription, offering potential new targets for antiviral therapies against HCV.

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Area of Science:

  • Virology
  • Molecular Biology
  • Hepatology

Background:

  • Hepatitis C virus (HCV) infection poses a significant global health challenge.
  • Understanding host-pathogen interactions is crucial for developing effective antiviral strategies.

Discussion:

  • HCV infection leads to increased expression of ADP-ribosylation factor 4 (ARF4).
  • ARF4 plays a critical role in promoting HCV replication within host cells.
  • The transcription factor CREB3 is activated and translocates to the nucleus during HCV infection.

Key Insights:

  • CREB3 activation results in the transcriptional upregulation of ARF4.
  • ARF4 is identified as a key host factor that facilitates HCV replication.
  • This study elucidates a novel host-dependent mechanism exploited by HCV.

Outlook:

  • ARF4 represents a promising therapeutic target for developing novel antiviral treatments against HCV.
  • Further research into the ARF4-HCV replication axis could lead to innovative drug discovery.