Hepatitis E Virus and Immunology Research

A special issue of Vaccines (ISSN 2076-393X). This special issue belongs to the section "Hepatitis Virus Vaccines".

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 2308

Special Issue Editor


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Guest Editor
Laboratory of Virology – Federative Institute of Biology, Toulouse University Hospital & INSERM U1043/CNRS5282, Toulouse, France
Interests: hepatitis E virus (HEV) tropism; HEV pathogenesis; acute hepatitis; chronic hepatitis; ribavirin; zoonoses
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Special Issue Information

Dear Colleagues,

Hepatitis E virus (HEV) was discovered in 1983 using electron microscopy, and the HEV genome was characterized a few years later. Our understanding of the epidemiology and pathophysiology of HEV infection has improved considerably in recent years, but many aspects still remain enigmatic. HEV is the most common cause of acute viral hepatitis worldwide. Improvements in diagnostic algorithms based on serological and molecular tools are associated with a dramatic increase in the number of cases of HEV infection reported to public health authorities. HEV can take different transmission routes depending on the genotype. HEV-1 and HEV-2 are predominant in countries with limited resources, where they are transmitted via contaminated water, while HEV-3 and HEV-4 are predominant in the other countries, where they are transmitted from a large animal reservoir, mainly pigs. HEV-1 can result in fulminant hepatic failure and severe placental disease in pregnant women. We now know that only HEV-3 and HEV-4 can produce chronic hepatitis E in immunocompromised individuals. Furthermore, extra-hepatic manifestations such as neurological and renal manifestations are increasingly being reported. The mechanisms responsible for the variety of clinical manifestations of HEV infection remain poorly characterized. This Special Issue of Vaccines is dedicated to our current knowledge of HEV and future directions of research on HEV vaccines.

Prof. Dr. Jacques Izopet
Guest Editor

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Keywords

  • HEV
  • acute hepatitis
  • chronic hepatitis
  • pregnant women
  • ribavirin
  • foodborne infections
  • waterborne infections
  • immunocompromised patients
  • zoonosis

Published Papers (1 paper)

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Research

7 pages, 731 KiB  
Article
Hepatitis E Virus Quasispecies in Cerebrospinal Fluid with Neurological Manifestations
by Florence Abravanel, Florence Nicot, Sébastien Lhomme, Michele Cazabat, Thomas Drumel, Aurélie Velay, Justine Latour, Julie Belliere, Pascal Cintas, Nassim Kamar and Jacques Izopet
Vaccines 2021, 9(10), 1205; https://doi.org/10.3390/vaccines9101205 - 19 Oct 2021
Cited by 8 | Viewed by 1674
Abstract
Hepatitis E virus (HEV) infection can lead to a variety of neurological disorders. While HEV RNA is known to be present in the central nervous system, HEV quasispecies in serum and cerebrospinal fluid (CSF) have rarely been explored. We studied the virus’ quasispecies [...] Read more.
Hepatitis E virus (HEV) infection can lead to a variety of neurological disorders. While HEV RNA is known to be present in the central nervous system, HEV quasispecies in serum and cerebrospinal fluid (CSF) have rarely been explored. We studied the virus’ quasispecies in the blood and the CSF of five patients at the onset of their neurological symptoms. The samples of three patients suffering from meningitis, neuralgic amyotrophy and acute inflammatory polyradiculoneuropathy were taken at the acute phase of the HEV infection. The samples from the other two patients were taken during the chronic phase (5 years after HEV diagnosis) when they presented with clinical signs of encephalitis. We sequenced at least 20 randomly polyproline regions of the selected virus clones. Phylogenetic analysis of the virus variants in the blood and the CSF revealed no virus compartmentalization for the three acute-phase patients but there was clear evidence of HEV quasispecies compartmentalization in the CSF of the two patients during chronic infection. In conclusion, prolonged infection in the immunocompromised condition can lead to independent virus replication in the liver and the tissues, producing viruses in CSF. Full article
(This article belongs to the Special Issue Hepatitis E Virus and Immunology Research)
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