Evidence map›Paper›PMID 20357251›Full record

Trial reportJournal of immunology (Baltimore, Md. : 1950)2010

At homeostasis filarial infections have expanded adaptive T regulatory but not classical Th2 cells.

Simon Metenou, Benoit Dembele, Siaka Konate, Housseini Dolo, Siaka Y Coulibaly, Yaya I Coulibaly, Abdallah A Diallo, Lamine Soumaoro, Michel E Coulibaly, Dramane Sanogo and 5 more

Open access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of immunology (Baltimore, Md. : 1950), 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 77 papers.

0numbers the graph read from it
0cells of the map it votes in
77citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

77 citing papers in PubMed, 104 citations in OpenAlex.

  1. Trial
  2. Impact ofTropical medicine and infectious disease · 2025
    Article
  3. Article
  4. Review
  5. Review
  6. bioRxiv : the preprint server for biology · 2024
    Article
  7. Article
  8. Article
  9. Review
  10. The Immune Response to Nematode Infection.International journal of molecular sciences · 2023
    Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Profiles of CD4Medical microbiology and immunology · 2022
    Article
  16. The Human FilariaResearch and reports in tropical medicine · 2022
    Review
  17. Review
  18. Article
  19. Revisiting the Mechanisms of Immune Evasion Employed by Human Parasites.Frontiers in cellular and infection microbiology · 2021
    Review
  20. Filarial Lymphedema Patients Are Characterized by Exhausted CD4Frontiers in cellular and infection microbiology · 2021
    Article

17 more citing papers are in PubMed but not listed here.

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

15 authors at 3 institutions in 2 countries.

Simon MetenouLaboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
Benoit Dembele
Siaka Konate
Housseini Dolo
Siaka Y Coulibaly
Yaya I Coulibaly
Abdallah A Diallo
Lamine Soumaoro
Michel E Coulibaly
Dramane Sanogo
Salif S Doumbia
Sekou F Traoré
Siddhartha Mahanty
Amy Klion
Thomas B Nutman
University of Bamako · MLNational Institute of Allergy and Infectious Diseases · USNational Institutes of Health · US

Funding

Immunoregulation /Immune Recognition In Filarial/Nonfilarial Parasitic InfectionZIAAI000197 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI NUTMAN, THOMAS · 2009 to 2025
$23.4M
Immunoregulation /Recognition In non/filarial InfectionZ01AI000197 · NIAID · NIAID EXTRAMURAL ACTIVITIES · PI NUTMAN, THOMAS B. · 1985 to 2008
$3.5M
Mali International Center for Excellence in Research: FilariasisZIAAI001063 · NIAID · NATIONAL INSTITUTE OF ALLERGY AND INFECTIOUS DISEASES · PI NUTMAN, THOMAS · 2009 to 2025
$3.2M
Intramural NIH HHS Z01 AI000197
6 · The paper itself

Abstract

Despite the well-documented immune suppression associated with human helminth infections, studies characterizing the immune response at the single-cell level are scanty. We used multiparameter flow cytometry to characterize the type of effector (Th1, Th2, and Th17) and regulatory (natural T regulatory cells [nTregs] and adaptive Treg cells [aTreg/type 1 regulatory cells (Tr1s)]) CD4(+) and CD8(+) T cells in filaria-infected (Fil(+)) and -uninfected (Fil(-)) individuals at homeostasis (in the absence of stimulation). Frequencies of CD4(+) lymphocytes spontaneously producing IL-4, IL-10, and IL-17A were significantly higher in Fil(+), as were those of IL-10(+)/IL-4(+) double-producing CD4(+) cells. Interestingly, frequencies of Th17 and aTreg/Tr1s but not classical Th1 or Th2 cells were significantly increased in Fil(+) compared to Fil(-) individuals. Although the frequency of nTreg was increased in Fil(+), IL-10 was overwhelmingly produced by CD4(+)CD25(-) cells. Moreover, the concentration of IL-10 produced spontaneously in vitro strongly correlated with the integrated geometric mean fluorescence intensity of IL-10-producing aTreg/Tr1s in Fil(+). Together, these data show that at steady state, IL-10-producing aTreg/Tr1 as well as nTreg and effector Th17 CD4(+) cells are expanded in vivo in human filarial infections. Moreover, we have established baseline ex vivo frequencies of effector and Tregs at homeostasis at a population level.

Indexed as

Adaptive ImmunityAnimalsCytokinesElephantiasis, FilarialEnterobiasisEnterobiusHomeostasisHumansHymenolepiasisHymenolepis nanaMansonellaMansonelliasisMicrofilariaeTh2 CellsT-Lymphocytes, RegulatoryWuchereria bancroftiCytokines

Identifiers

PMID20357251
PMCPMC3407820
OpenAlexW2135838438

What OpenQuestion holds

Textmetadata
LicenceTDM
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.