Evidence map›Paper›PMID 9826378›Full record

ArticleInfection and immunity1998

Filarial nematode parasites secrete a homologue of the human cytokine macrophage migration inhibitory factor.

D V Pastrana, N Raghavan, P FitzGerald, S W Eisinger, C Metz, R Bucala, R P Schleimer, C Bickel, A L Scott

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Infection and immunity, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed, 4 pooled it
3.0field-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

75 citing papers in PubMed, 4 syntheses or guidelines pooled it, 206 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Article
  6. Modulation of the Immune Response by Nematode Derived Molecules.International journal of molecular sciences · 2025
    Review
  7. Article
  8. Analysis of the role ofJournal of veterinary research · 2024
    Article
  9. Article
  10. Article
  11. The Immune Response to Nematode Infection.International journal of molecular sciences · 2023
    Review
  12. Human IgE mAbs identify major antigens of parasitic worm infection.The Journal of allergy and clinical immunology · 2022
    Article
  13. Article
  14. Review
  15. Review
  16. Article
  17. Article
  18. Review
  19. Article
  20. The cytokine MIF controls daily rhythms of symbiont nutrition in an animal-bacterial association.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article

15 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

9 authors at 3 institutions in 1 country.

D V PastranaDepartment of Molecular Microbiology and Immunology, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, Maryland 21205, USA.
N Raghavan
P FitzGerald
S W Eisinger
C Metz
R Bucala
R P Schleimer
C Bickel
A L Scott
Johns Hopkins University · USJohns Hopkins Medicine · USNational Institutes of Health · US

Funding

Training: Molecular & Cellular Bases of Infectious DiseasesT32AI007417 · NIAID · JOHNS HOPKINS UNIVERSITY · PI Arturo Casadevall · 1994 to 2026
$11.9M
FILARIASIS REPOSITORY RESEARCH SERVICEN01AI002642 · NIAID · UNIVERSITY OF GEORGIA (UGA) · PI MC CALL, JOHN W · 1985 to 1987
–
B MALAYI L3/L4 SURFACE ANTIGENS FROM PCR CDNA LIBRARIESR01AI029411 · NIAID · JOHNS HOPKINS UNIVERSITY · PI SCOTT, ALAN L · 1992 to 1996
–
NIAID NIH HHS AI-02642NIAID NIH HHS AI-29411
6 · The paper itself

Abstract

Filarial nematode parasites establish long-term chronic infections in the context of an antiparasite immunity that is strongly biased toward a Th2 response. The mechanisms that lead to this Th2 bias toward filarial antigens are not clear, but one possibility is that the parasites produce molecules that have the capacity to proactively modify their immunological environment. Here we report that filarial parasites of humans secrete a homologue of the human proinflammatory cytokine macrophage migration inhibitory factor (MIF) that has the capability of modifying the activity of human monocytes/macrophages. A cDNA clone isolated from a Brugia malayi infective-stage larva expression library encoded a 12.5-kDa protein product (Bm-MIF) with 42% identity to human and murine MIF. MIF homologues were also found to be expressed in the related filarial species Wuchereria bancrofti and Onchocerca volvulus. Bm-mif was transcribed by adult and larval parasites, and the protein product was found in somatic extracts and in the parasite's excretory-secretory products. Immunohistocytochemistry revealed that Bm-MIF was localized to cells of the hypodermis/lateral chord, the uterine wall, and larvae developing in utero. Unexpectedly, the activities of recombinant Bm-MIF and human MIF on human monocytes/macrophages were found to be similar. When placed with monocytes/macrophages in a cell migration assay, Bm-MIF inhibited random migration. When placed away from cells, Bm-MIF induced an increase in monocyte/macrophage migration that was specifically inhibited by neutralizing anti-Bm-MIF antibodies. Bm-MIF is the first demonstration that helminth parasites produce cytokine homologues that have the potential to modify host immune responses to promote parasite survival.

Indexed as

Amino Acid SequenceAnimalsBrugia malayiCell MovementFemaleFilarioideaGerbillinaeHumansMacrophage Migration-Inhibitory FactorsMacrophagesMaleMolecular Sequence DataMonocytesOnchocerca volvulusSequence Homology, Amino AcidWuchereria bancroftiMacrophage Migration-Inhibitory Factors

Identifiers

PMID9826378
PMCPMC108754
OpenAlexW2152349340

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.