Evidence map›Paper›PMID 24220296›Full record

ArticleMucosal immunology2014

Activation of memory Th17 cells by domain 4 pneumolysin in human nasopharynx-associated lymphoid tissue and its association with pneumococcal carriage.

C Gray, M S Ahmed, A Mubarak, A V Kasbekar, S Derbyshire, M S McCormick, M K Mughal, P S McNamara, T Mitchell, Q Zhang

Open access · bronzeAbstract read
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In one paragraph

Article in Mucosal immunology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

22 citing papers in PubMed, 39 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Article
  4. T cells in Group AFrontiers in cellular and infection microbiology · 2026
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  7. Saudi journal of biological sciences · 2021
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  17. Review
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  19. Next generation protein based Streptococcus pneumoniae vaccines.Human vaccines & immunotherapeutics · 2016
    Review
  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

10 authors at 4 institutions in 1 country.

C GrayInstitute of Infection and Global Health, Department of Clinical Infection Microbiology and Immunology, Liverpool, UK.
M S AhmedInstitute of Infection and Global Health, Department of Clinical Infection Microbiology and Immunology, Liverpool, UK.
A MubarakInstitute of Infection and Global Health, Department of Clinical Infection Microbiology and Immunology, Liverpool, UK.
A V KasbekarDepartment of Otolaryngology, Alder Hey Children's Hospital, Liverpool, UK.
S DerbyshireDepartment of Otolaryngology, Alder Hey Children's Hospital, Liverpool, UK.
M S McCormickDepartment of Otolaryngology, Royal Liverpool University Hospital, Liverpool, UK.
M K MughalInstitute of Infection, Immunity and Inflammation, University of Glasgow, Glasgow, UK.
P S McNamaraDepartment of Women's and Children's Health, Institute of Translational Medicine, University of Liverpool, Liverpool, UK.
T MitchellInstitute of Microbiology and Infection and School of Immunity and Infection, University of Birmingham, Birmingham, UK.
Q ZhangInstitute of Infection and Global Health, Department of Clinical Infection Microbiology and Immunology, Liverpool, UK.
Alder Hey Children's Hospital · GBUniversity of Liverpool · GBUniversity of Birmingham · GBUniversity of Glasgow · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pneumococcal carriage is common in children that may account for the high incidence of disease in this age group. Recent studies in animals suggest an important role for CD4+ T cells, T helper type 17 (Th17) cells in particular, in pneumococcal clearance. Whether this Th17-mediated mechanism operates in humans and what pneumococcal components activate Th17 are unknown. We investigated the ability of domain 4 pneumolysin (D4Ply) to activate CD4+ T cells including Th17 in human nasopharynx-associated lymphoid tissue (NALT) and peripheral blood. We show that D4Ply elicited a prominent CD4+ T-cell proliferative response. More importantly, D4Ply elicited a significant memory Th17 response in NALT, and a moderate response in peripheral blood mononuclear cells (PBMCs). This D4Ply-elicited memory Th17 response was more marked in carriage- than in carriage+ children in both NALT and PBMCs. In contrast, no difference was shown in D4Ply-induced Th1 response between the two groups. We also show D4Ply activated human monocytes and murine macrophages that was in part dependent on Toll-like receptor 4 (TLR-4). Our results support a protective role of Th17 against pneumococcal carriage in human nasopharynx, and identify a novel property of D4Ply to activate Th17 in NALT that may offer an attractive vaccine candidate in intranasal immunization against pneumococcal infection.

Indexed as

Carrier StateImmunologic MemoryAnimalsBacterial ProteinsCD4-Positive T-LymphocytesCell DifferentiationChildChild, PreschoolCholesterolFemaleHumansLymphocyte ActivationLymphoid TissueMacrophagesMaleMiceBacterial ProteinsCholesterolplY protein, Streptococcus pneumoniaeStreptolysinsToll-Like Receptor 4Tumor Necrosis Factor-alpha

Identifiers

PMID24220296
OpenAlexW2041704343

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.