Evidence map›Paper›PMID 34525131›Full record

ArticlePLoS pathogens2021

Trypanosoma brucei triggers a broad immune response in the adipose tissue.

Henrique Machado, Tiago Bizarra-Rebelo, Mariana Costa-Sequeira, Sandra Trindade, Tânia Carvalho, Filipa Rijo-Ferreira, Barbara Rentroia-Pacheco, Karine Serre, Luisa M Figueiredo

Open access · goldAbstract read
In one paragraph

Article in PLoS pathogens, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

17 citing papers in PubMed, 26 citations in OpenAlex.

  1. Review
  2. Article
  3. The role of autophagy in protozoan infections.Frontiers in cellular and infection microbiology · 2026
    Review
  4. Review
  5. Review
  6. A murine model ofMicrobiology spectrum · 2025
    Article
  7. Article
  8. A murine model ofbioRxiv : the preprint server for biology · 2024
    Article
  9. The intersection of hostMicrobiology and molecular biology reviews : MMBR · 2024
    Review
  10. Review
  11. Article
  12. Article
  13. Article
  14. Review
  15. Adipose Tissue Remodeling in Pathophysiology.Annual review of pathology · 2023
    Review
  16. Article
  17. Review
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

9 authors at 2 institutions in 2 countries.

Henrique MachadoInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.
Tiago Bizarra-RebeloInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0001-6461-961X
Mariana Costa-SequeiraInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0003-1486-5403
Sandra TrindadeInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0001-9127-1532
Tânia CarvalhoInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0002-5283-5013
Filipa Rijo-FerreiraDepartment of Neuroscience, Peter O'Donnell Jr. Brain Institute, University of Texas Southwestern Medical Center, Dallas, Texas, United States.ORCID 0000-0002-4003-020X
Barbara Rentroia-PachecoInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0003-0073-4269
Karine SerreInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.
Luisa M FigueiredoInstituto de Medicina Molecular João Lobo Antunes, Faculdade de Medicina, Universidade de Lisboa, Lisbon, Portugal.ORCID 0000-0002-5752-6586
University of Lisbon · PTThe University of Texas Southwestern Medical Center · US

Funding

Elucidating the mechanism for malaria rhythmicity: an underlying circadian clock of the parasiteK99GM132557 · NIGMS · UT SOUTHWESTERN MEDICAL CENTER · PI RIJO-FERREIRA, FILIPA · 2019 to 2021
$122k
NIGMS NIH HHS K99 GM132557
6 · The paper itself

Abstract

Adipose tissue is one of the major reservoirs of Trypanosoma brucei parasites, the causative agent of sleeping sickness, a fatal disease in humans. In mice, the gonadal adipose tissue (AT) typically harbors 2-5 million parasites, while most solid organs show 10 to 100-fold fewer parasites. In this study, we tested whether the AT environment responds immunologically to the presence of the parasite. Transcriptome analysis of T. brucei infected adipose tissue revealed that most upregulated host genes are involved in inflammation and immune cell functions. Histochemistry and flow cytometry confirmed an increasingly higher number of infiltrated macrophages, neutrophils and CD4+ and CD8+ T lymphocytes upon infection. A large proportion of these lymphocytes effectively produce the type 1 effector cytokines, IFN-γ and TNF-α. Additionally, the adipose tissue showed accumulation of antigen-specific IgM and IgG antibodies as infection progressed. Mice lacking T and/or B cells (Rag2-/-, Jht-/-), or the signature cytokine (Ifng-/-) displayed a higher parasite load both in circulation and in the AT, demonstrating the key role of the adaptive immune system in both compartments. Interestingly, infections of C3-/- mice showed that while complement system is dispensable to control parasite load in the blood, it is necessary in the AT and other solid tissues. We conclude that T. brucei infection triggers a broad and robust immune response in the AT, which requires the complement system to locally reduce parasite burden.

Indexed as

Adipose TissueAnimalsMiceTrypanosoma brucei bruceiTrypanosomiasis, African

Identifiers

PMID34525131
PMCPMC8476018
OpenAlexW3201005660

What Socratic holds

Textmetadata
LicenceCC BY
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 Socratic graph.