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Related Concept Videos

Hepatitis01:25

Hepatitis

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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.
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Pathobiology of hepatitis E: lessons learned from primate models.

Robert H Purcell1, Ronald E Engle1, Sugantha Govindarajan2

  • 1National Institute of Allergy and Infectious Diseases, National Institutes of Health , Bethesda, MD 20892, USA.

Emerging Microbes & Infections
|June 4, 2015
PubMed
Summary
This summary is machine-generated.

Hepatitis E virus (HEV) infection studies in nonhuman primates revealed that different HEV genotypes mirror distinct epidemiological patterns observed globally. This research enhances understanding of HEV

Keywords:
HEVgenotypeshost rangenonhuman primatesvirulence

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Area of Science:

  • Virology
  • Hepatology
  • Epidemiology

Background:

  • Hepatitis E virus (HEV) research is limited by inadequate cell culture and animal models.
  • Epidemiological data show distinct HEV patterns in developing versus industrialized countries.
  • Differences in HEV epidemiology are attributed to genotypic variations.

Purpose of the Study:

  • To investigate the biological characteristics of Hepatitis E virus genotypes.
  • To compare HEV genotypes 1-3 in nonhuman primate models.
  • To correlate in vivo HEV genotype behavior with epidemiological findings.

Main Methods:

  • Nonhuman primates (rhesus macaques, cynomolgus macaques, chimpanzees) were used as human surrogates.
  • Infections were induced using HEV genotypes 1, 2, and 3.
  • Biological parameters of HEV infection were assessed in the primate models.

Main Results:

  • Nonhuman primates effectively modeled HEV infections.
  • The biological behaviors of HEV genotypes 1-3 in primates aligned with their known epidemiological traits.
  • Genotype-specific differences in disease presentation and infection dynamics were observed.

Conclusions:

  • Nonhuman primates are suitable models for studying HEV pathogenesis.
  • Biological characteristics of HEV genotypes correlate with their epidemiological profiles.
  • Findings advance the understanding of global Hepatitis E epidemiology and pathogenesis.