Evidence map›Paper›PMID 29324739›Full record

ArticlePLoS neglected tropical diseases2018

Mansonella perstans microfilaremic individuals are characterized by enhanced type 2 helper T and regulatory T and B cell subsets and dampened systemic innate and adaptive immune responses.

Manuel Ritter, Winston Patrick Chounna Ndongmo, Abdel Jelil Njouendou, Nora Nganyewo Nghochuzie, Lucy Cho Nchang, Dizzle Bita Tayong, Kathrin Arndts, Norman Nausch, Marc Jacobsen, Samuel Wanji and 2 more

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2018. 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
2.2field-weighted citation impact, top 13% 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, 50 citations in OpenAlex.

  1. The Efficacy of Doxycycline Treatment onThe American journal of tropical medicine and hygiene · 2019
    Trial
  2. Article
  3. Article
  4. Large-scale production ofFrontiers in tropical diseases · 2024
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  5. Article
  6. Article
  7. Comparative development of human filariaeFrontiers in tropical diseases · 2024
    Article
  8. Article
  9. Pathogens (Basel, Switzerland) · 2024
    Article
  10. Article
  11. Article
  12. Molecular surveillance detects high prevalence of the neglected parasitemedRxiv : the preprint server for health sciences · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
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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

12 authors at 3 institutions in 2 countries.

Manuel RitterInstitute of Medical Microbiology, Immunology and Parasitology, University Hospital of Bonn, Germany.ORCID 0000-0001-8667-2067
Winston Patrick Chounna NdongmoParasite and Vector Research Unit (PAVRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Abdel Jelil NjouendouParasite and Vector Research Unit (PAVRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Nora Nganyewo NghochuzieParasite and Vector Research Unit (PAVRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Lucy Cho NchangParasite and Vector Research Unit (PAVRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Dizzle Bita TayongParasite and Vector Research Unit (PAVRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Kathrin ArndtsInstitute of Medical Microbiology, Immunology and Parasitology, University Hospital of Bonn, Germany.
Norman NauschDepartment of General Pediatrics, Neonatology, and Pediatric Cardiology, University Children's Hospital, Medical Faculty, Duesseldorf, Germany.
Marc JacobsenDepartment of General Pediatrics, Neonatology, and Pediatric Cardiology, University Children's Hospital, Medical Faculty, Duesseldorf, Germany.
Samuel WanjiParasite and Vector Research Unit (PAVRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Laura E LaylandInstitute of Medical Microbiology, Immunology and Parasitology, University Hospital of Bonn, Germany.
Achim HoeraufInstitute of Medical Microbiology, Immunology and Parasitology, University Hospital of Bonn, Germany.
University of Buea · CMUniversity Hospital Bonn · DEDüsseldorf University Hospital · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The filarial nematode Mansonella perstans is endemic throughout Africa, northern South America and the Caribbean. Interestingly, M. perstans-infected individuals present no distinct clinical picture associated with certain pathology. Due to its relatively silent nature, research on this tropical disease has been neglected, especially M. perstans-driven immune responses. A hindrance in obtaining data on M. perstans-specific responses has been the inability to obtain adult worms since their habitats in serous cavities are difficult to access. Thus, in this study, for the first time, we used Mansonella perstans worm antigen extract as stimulant to obtain filarial-specific recall and immunoglobulin responses from M. perstans microfilaremic individuals (Mp MF+) from Cameroon. Moreover, systemic immune profiles in sera and immune cell composition in peripheral blood from Mp MF+ and amicrofilaremic individuals (Mp MF-) were obtained. Our data reveal that Mp MF+ individuals showed significantly reduced cytokine (IL-4, IL-6 and IL-12p70) and chemokine levels (IL-8 and RANTES), but significantly higher MIP-1β as well as increased M. perstans-specific IgG4 levels compared to Mp MF- individuals. In contrast, upon re-stimulation with worm antigen extract, IFN-γ, IL-13, IL-10 and IL-17A secretion was enhanced in cell cultures from Mp MF+ individuals when compared to those from cultures of healthy European individuals. Moreover, analysis of immune cell composition in peripheral blood from Mp MF+ individuals revealed increased type 2 helper T (Th2), natural killer (NK), regulatory B and T cell (Breg and Treg) subsets but decreased type 1 regulatory T (Tr1) cells. In summary, this study deciphers for the first time, M. perstans-specific immune responses using worm antigen extract and shows that patent M. perstans infections have distinct Th2, Breg and Treg subsets accompanied with reduced systemic innate and adaptive immune responses and dominant filarial-specific IgG4 levels.

Indexed as

Adaptive ImmunityImmunity, InnateAdultAgedAnimalsAntibodies, HelminthB-Lymphocyte SubsetsCytokinesFemaleHumansMaleMansonellaMansonelliasisMiddle AgedT-Lymphocyte SubsetsAntibodies, HelminthCytokines

Identifiers

PMID29324739
PMCPMC5783424
OpenAlexW2783249293

What OpenQuestion 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 OpenQuestion graph.