Evidence map›Paper›PMID 12454155›Full record

ArticleJournal of clinical microbiology2002

Hepatitis E virus (HEV) capsid antigens derived from viruses of human and swine origin are equally efficient for detecting anti-HEV by enzyme immunoassay.

R E Engle, C Yu, S U Emerson, X-J Meng, R H Purcell

Open access · greenAbstract readComparative StudyEvaluation Study
In one paragraph

Article in Journal of clinical microbiology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 1 pooled it
1.8field-weighted citation impact, top 16% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

48 citing papers in PubMed, 1 synthesis or guideline pooled it, 106 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Review
  4. Article
  5. [Prophylactic vaccines for hepatitis type E].Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology · 2023
    Article
  6. Review
  7. Immunobiology and Host Response to HEV.Advances in experimental medicine and biology · 2023
    Article
  8. Prophylactic Hepatitis E Vaccine.Advances in experimental medicine and biology · 2023
    Article
  9. Article
  10. [Vaccines against hepatitis E virus: state of development].Bundesgesundheitsblatt, Gesundheitsforschung, Gesundheitsschutz · 2022
    Review
  11. Article
  12. Article
  13. Review
  14. Observational
  15. Article
  16. Hepatitis E Virus and Related Viruses in Animals.Transboundary and emerging diseases · 2017
    Review
  17. Article
  18. Observational
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

R E EngleHepatitis Viruses and Molecular Hepatitis Sections, Laboratory of Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, USA. rengle@niaid.nih.gov
C Yu
S U Emerson
X-J Meng
R H Purcell
National Institutes of Health · USNational Institute of Allergy and Infectious Diseases · USVirginia–Maryland College of Veterinary Medicine · US

Funding

In Vivo And In Vitro Studies Of Hepatitis E VirusZIAAI000596 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI EMERSON, SUZANNE U · 2009 to 2014
$3.4M
Search For New and Emerging Etiologic AgentsZIAAI000311 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI PURCELL, ROBERT H. · 2009 to 2013
$3.2M
SEARCH FOR NEW HEPATITIS AGENTSZ01AI000311 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI PURCELL, ROBERT H. · 1985 to 2008
$1.7M
IN VIVO AND IN VITRO STUDIES OF HEPATITIS E VIRUSZ01AI000596 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI EMERSON, SUZANNE · 1992 to 2008
$1.3M
6 · The paper itself

Abstract

The recombinant truncated ORF2 (capsid) antigen derived from the Meng strain of swine hepatitis E virus (HEV) differs from that of the Sar-55 strain of human HEV by approximately 5% at the amino acid level. Serial serum samples from two chimpanzees and six rhesus monkeys experimentally infected with HEV were tested with one enzyme immunoassay (EIA) based on the Sar-55 antigen and with a second EIA based on the Meng antigen. We obtained 98% agreement (kappa = 0.952) by direct comparison. The virtually identical results obtained with these antigens in detecting seroconversion following infection with HEV suggests that they were reacting with antibodies that detect the same or very similar epitopes of HEV. We then tested human and swine serum samples for anti-HEV in EIAs that utilized one or the other of the two ORF2 antigens and showed that these results were also virtually identical. The specimens tested included swine sera from the United States, Canada, China, Korea, and Thailand and sera from veterinarians, U.S. and non-U.S. volunteer blood donors, and U.S. and non-U.S. animal handlers. We tested 792 swine sera and obtained 93% agreement (kappa = 0.839). We similarly tested 882 human sera and obtained 99% agreement (kappa = 0.938). Moreover, we found virtually no difference in the levels of prevalence of anti-HEV as measured by the two tests, again suggesting that the antigens derived from human and swine HEV contain the same immunodominant epitopes.

Indexed as

AnimalsCross ReactionsHepatitis AntibodiesHepatitis AntigensHepatitis EHepatitis E virusHumansImmunodominant EpitopesImmunoenzyme TechniquesMacaca mulattaPan troglodytesSwineSwine DiseasesViral ProteinsHepatitis AntibodiesHepatitis AntigensImmunodominant EpitopesORF2 protein, Hepatitis E virusViral Proteins

Identifiers

PMID12454155
PMCPMC154628
OpenAlexW2117243849

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.