Evidence map›Paper›PMID 20351784›Full record

ArticlePLoS neglected tropical diseases2010

Influence of exposure history on the immunology and development of resistance to human Schistosomiasis mansoni.

Carla L Black, Pauline N M Mwinzi, Erick M O Muok, Bernard Abudho, Colin M Fitzsimmons, David W Dunne, Diana M S Karanja, W Evan Secor, Daniel G Colley

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed, 2 pooled it
7.6field-weighted citation impact, top 2% 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

63 citing papers in PubMed, 2 syntheses or guidelines pooled it, 91 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Trial
  5. Article
  6. Long-term persistence ofCurrent research in parasitology & vector-borne diseases · 2026
    Article
  7. Article
  8. Schistosomiasis.Advances in experimental medicine and biology · 2024
    Review
  9. Review
  10. Establishing a single-sex controlled humanImmunotherapy advances · 2023
    Article
  11. Environmental health insights · 2023
    Article
  12. Article
  13. Praziquantel Treatment ofFrontiers in immunology · 2021
    Article
  14. Review
  15. Article
  16. Review
  17. Article
  18. Review
  19. Review
  20. Article

3 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 4 institutions in 3 countries.

Carla L BlackDepartment of Microbiology, Center for Tropical and Emerging Global Diseases, University of Georgia, Athens, Georgia, United States of America. blackc@uga.edu
Pauline N M Mwinzi
Erick M O Muok
Bernard Abudho
Colin M Fitzsimmons
David W Dunne
Diana M S Karanja
W Evan Secor
Daniel G Colley
Kenya Medical Research Institute · KEUniversity of Cambridge · GBUniversity of Georgia · USCenters for Disease Control and Prevention · US

Funding

Determinants of resistance in human schistosomiasisR01AI053695 · NIAID · UNIVERSITY OF GEORGIA (UGA) · PI COLLEY, DANIEL G · 2003 to 2014
$5.2M
Training in Tropical and Emerging Global Diseases - SupplementT32AI060546 · NIAID · UNIVERSITY OF GEORGIA (UGA) · PI Silvia N Moreno, Vasant Muralidharan · 2004 to 2026
$5.1M
NIAID NIH HHS R01 AI053695NIAID NIH HHS T32 AI060546Wellcome Trust
6 · The paper itself

Abstract

backgroundPrevious studies suggest that humans can acquire immunity to reinfection with schistosomes, most probably due to immunologic mechanisms acquired after exposure to dying schistosome worms. METHODOLOGY/PRINCIPAL

findingsWe followed longitudinally two cohorts of adult males occupationally exposed to Schistosoma mansoni by washing cars (120 men) or harvesting sand (53 men) in Lake Victoria. Men were treated with praziquantel each time S. mansoni infection was detected. In car washers, a significant increase in resistance to reinfection, as measured by the number of cars washed between cure and reinfection, was observed after the car washers had experienced, on average, seven cures. In the car washers who developed resistance, the level of schistosome-specific IgE increased between baseline and the time at which development of resistance was first evidenced. In the sand harvesters, a significant increase in resistance, as measured by the number of days worked in the lake between cure and reinfection, was observed after only two cures. History of exposure to S. mansoni differed between the two cohorts, with the majority of sand harvesters being lifelong residents of a village endemic for S. mansoni and the majority of car washers having little exposure to the lake before they began washing cars. Immune responses at study entry were indicative of more recent infections in car washers and more chronic infections in sand harvesters. CONCLUSIONS/SIGNIFICANCE: Resistance to reinfection with S. mansoni can be acquired or augmented by adults after multiple rounds of reinfection and cure, but the rate at which resistance is acquired by this means depends on immunologic status and history of exposure to S. mansoni infection.

Indexed as

Occupational ExposureAdultAnimalsAntibodies, ProtozoanAntiprotozoal AgentsCohort StudiesHumansImmunoglobulin ELongitudinal StudiesMalePraziquantelSchistosoma mansoniSchistosomiasis mansoniSecondary PreventionYoung AdultAntibodies, ProtozoanAntiprotozoal AgentsImmunoglobulin EPraziquantel

Identifiers

PMID20351784
PMCPMC2843635
OpenAlexW2021822509

What OpenQuestion holds

Textmetadata
LicenceCC0
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.