Evidence map›Paper›PMID 21095257›Full record

ArticleVaccine2011

CD4+ and CD8+ T cell- and IL-17-mediated protection against Entamoeba histolytica induced by a recombinant vaccine.

Xiaoti Guo, Lisa Barroso, David M Lyerly, William A Petri, Eric R Houpt

Abstract read
In one paragraph

Article in Vaccine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.5field-weighted citation impact, top 19% 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

27 citing papers in PubMed, 55 citations in OpenAlex.

  1. Review
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  7. Optimizing a Multi-Component IntranasalFrontiers in immunology · 2021
    Article
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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 2 institutions in 1 country.

Xiaoti GuoDivision of Infectious Diseases and International Health, Department of Medicine, University of Virginia, Charlottesville, VA 22908, USA.
Lisa Barroso
David M Lyerly
William A Petri
Eric R Houpt
University of Virginia · USTechLab (United States) · US

Funding

UVA Digestive Health Research CenterP30DK067629 · NIDDK · UNIVERSITY OF VIRGINIA CHARLOTTESVILLE · PI PIZARRO, THERESA TORRES · 2004 to 2008
$5.6M
Cooperative Research Partnership for an Amebic Colitis VaccineU01AI070384 · NIAID · UNIVERSITY OF VIRGINIA · PI PETRI, WILLIAM A · 2006 to 2010
$4.1M
Mouse Strain dependent innate resistance to intestinal amebiasisR01AI071373 · NIAID · UNIVERSITY OF VIRGINIA · PI HOUPT, ERIC R · 2006 to 2009
$1.5M
NIAID NIH HHS R01 AI071373NIAID NIH HHS U01 AI070384NIDDK NIH HHS P30 DK067629
6 · The paper itself

Abstract

Amebiasis in the murine model can be prevented by vaccination with the Gal/GalNAc lectin through a T cell-dependent mechanism. In this work we further decipher the mechanism of this protection. Mice vaccinated with the recombinant "LecA" fragment of the Gal/GalNAc lectin with alum were capable of transferring protection to naïve recipients by both CD4+ T cells and surprisingly CD8+ T cells. We then examined the cytokine profile of these cells. CD4+ T cells from PBMC of LecA-alum vaccinated mice were observed to be a major source of IFN-γ, known to be a protective cytokine with this vaccine. In contrast, CD8+ T cells produced relatively little IFN-γ but more IL-17 than the CD4 compartment. We thus examined the role of IL-17 in vaccine mediated protection and found through neutralization experiments that this cytokine contributed to LecA-alum vaccine protection. In addition we examined whether these cells exhibited direct amebicidal activity in vitro and found that both populations had amebicidal activity at high concentrations (1000:1) but CD8+ T cells appeared more potent, capable of cytotoxicity at a 100:1 ratio. In conclusion, both CD4 and CD8 T cells exert protection with this amebiasis vaccine. The mechanism of CD8 T cell-mediated protection may include direct amebicidal activity and/or IL-17 production. Both IL-17 and IFN-γ are useful surrogates for immune protection.

Indexed as

AnimalsCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesCell SurvivalEntamoeba histolyticaEntamoebiasisInterferon-gammaInterleukin-17MaleMiceProtozoan VaccinesVaccines, SyntheticInterferon-gammaInterleukin-17Protozoan VaccinesVaccines, Synthetic

Identifiers

PMID21095257
PMCPMC3014458
OpenAlexW1986190010

What OpenQuestion holds

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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.