Evidence map›Paper›PMID 10722623›Full record

ArticleInfection and immunity2000

gammadelta T cells are a component of early immunity against preerythrocytic malaria parasites.

K C McKenna, M Tsuji, M Sarzotti, J B Sacci, A A Witney, A F Azad

Open access · greenAbstract read
In one paragraph

Article in Infection and immunity, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
6.2field-weighted citation impact, top 4% 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

16 citing papers in PubMed, 41 citations in OpenAlex.

  1. Article
  2. Article
  3. γδ T cells in tissue physiology and surveillance.Nature reviews. Immunology · 2021
    Review
  4. γδ-T cells promote IFN-γ-dependentProceedings of the National Academy of Sciences of the United States of America · 2019
    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

6 authors at 3 institutions in 1 country.

K C McKennaDepartment of Microbiology, University of Maryland, Baltimore, Baltimore, Maryland 21201, USA.
M Tsuji
M Sarzotti
J B Sacci
A A Witney
A F Azad
University of Maryland, Baltimore · USNaval Medical Research Command · USNew York University · US

Funding

MURINE TYPHUS: VECTOR BIOLOGY AND TRANSMISSIONR01AI017828 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI RAHMAN, MOHAMMED SAYEEDUR · 1985 to 2022
$10.2M
Murine Typhus: Vector Biology &TransmissionR37AI017828 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI AZAD, ABDU F · 1998 to 2007
$3.6M
INTERSPECIFIC COMPETITION BETWEEN RICKETTSIAE IN TICKSR01AI043006 · NIAID · UNIVERSITY OF MARYLAND BALTIMORE · PI AZAD, ABDU F · 1998 to 2014
$3.3M
ADENOVIRUS--AN EFFICIENT VECTOR OF ANTIMALARIA IMMUNITYR29AI040656 · NIAID · NEW YORK UNIVERSITY SCHOOL OF MEDICINE · PI TSUJI, MORIYA · 1997 to 2001
$225k
NIAID NIH HHS AI 17828NIAID NIH HHS AI 43006NIAID NIH HHS R01 AI017828NIAID NIH HHS R01 AI043006NIAID NIH HHS R37 AI017828
6 · The paper itself

Abstract

We tested the hypothesis that gammadelta T cells are a component of an early immune response directed against preerythrocytic malaria parasites that are required for the induction of an effector alphabeta T-cell immune response generated by irradiated-sporozoite (irr-spz) immunization. gammadelta T-cell-deficient (TCRdelta(-/-)) mice on a C57BL/6 background were challenged with Plasmodium yoelii (17XNL strain) sporozoites, and then liver parasite burden was measured at 42 h postchallenge. Liver parasite burden was measured by quantification of parasite-specific 18S rRNA in total liver RNA by quantitative-competitive reverse transcription-PCR and by an automated 5' exonuclease PCR. Sporozoite-challenged TCRdelta(-/-) mice showed a significant (P < 0.01) increase in liver parasite burden compared to similarly challenged immunocompetent mice. In support of this result, TCRdelta(-/-) mice were also found to be more susceptible than immunocompetent mice to a sporozoite challenge when blood-stage parasitemia was used as a readout. A greater percentage of TCRdelta(-/-) mice than of immunocompetent mice progressed to a blood-stage infection when challenged with five or fewer sporozoites (odds ratio = 2.35, P = 0.06). TCRdelta(-/-) mice receiving a single irr-spz immunization showed percent inhibition of liver parasites comparable to that of immunized immunocompetent mice following a sporozoite challenge. These data support the hypothesis that gammadelta T cells are a component of early immunity directed against malaria preerythrocytic parasites and suggest that gammadelta T cells are not required for the induction of an effector alphabeta T-cell immune response generated by irr-spz immunization.

Indexed as

AnimalsBloodErythrocytesFemaleLiverMalariaMalaria VaccinesMiceMice, Inbred C57BLMice, KnockoutPlasmodium yoeliiRatsT-Lymphocyte SubsetsMalaria Vaccines

Identifiers

PMID10722623
PMCPMC97407
OpenAlexW2163364127

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.