Evidence map›Paper›PMID 22880141›Full record

ArticlePLoS neglected tropical diseases2012

Amoebae as potential environmental hosts for Mycobacterium ulcerans and other mycobacteria, but doubtful actors in Buruli ulcer epidemiology.

Sophie Gryseels, Diana Amissah, Lies Durnez, Koen Vandelannoote, Herwig Leirs, Johan De Jonckheere, Manuel T Silva, Françoise Portaels, Anthony Ablordey, Miriam Eddyani

Open access · goldAbstract read
In one paragraph

Article in PLoS neglected tropical diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
2.3field-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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Amoebae: beyond pathogens- exploring their benefits and future potential.Frontiers in cellular and infection microbiology · 2024
    Review
  4. Article
  5. Linking theOne health (Amsterdam, Netherlands) · 2021
    Review
  6. Review
  7. Article
  8. Article
  9. Review
  10. African journal of infectious diseases · 2018
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Evidences of the Low Implication of Mosquitoes in the Transmission ofThe Canadian journal of infectious diseases & medical microbiology = Journal canadien des maladies infectieuses et de la microbiologie medicale · 2017
    Review
  16. Article
  17. Article
  18. Taxonomy, Physiology, and Natural Products of Actinobacteria.Microbiology and molecular biology reviews : MMBR · 2016
    Review
  19. Article
  20. Article
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

10 authors at 5 institutions in 4 countries.

Sophie GryseelsEvolutionary Ecology Group, University of Antwerp, Antwerp, Belgium. sophie.gryseels@ua.ac.be
Diana Amissah
Lies Durnez
Koen Vandelannoote
Herwig Leirs
Johan De Jonckheere
Manuel T Silva
Françoise Portaels
Anthony Ablordey
Miriam Eddyani
Instituut voor Tropische Geneeskunde · BEUniversity of Antwerp · BEUniversity of Ghana · GHde Duve Institute · BEUniversidade do Porto · PT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe reservoir and mode of transmission of Mycobacterium ulcerans, the causative agent of Buruli ulcer, remain unknown. Ecological, genetic and epidemiological information nonetheless suggests that M. ulcerans may reside in aquatic protozoa. METHODOLOGY/PRINCIPAL

findingsWe experimentally infected Acanthamoeba polyphaga with M. ulcerans and found that the bacilli were phagocytised, not digested and remained viable for the duration of the experiment. Furthermore, we collected 13 water, 90 biofilm and 45 detritus samples in both Buruli ulcer endemic and non-endemic communities in Ghana, from which we cultivated amoeboid protozoa and mycobacteria. M. ulcerans was not isolated, but other mycobacteria were as frequently isolated from intracellular as from extracellular sources, suggesting that they commonly infect amoebae in nature. We screened the samples as well as the amoeba cultures for the M. ulcerans markers IS2404, IS2606 and KR-B. IS2404 was detected in 2% of the environmental samples and in 4% of the amoeba cultures. The IS2404 positive amoeba cultures included up to 5 different protozoan species, and originated both from Buruli ulcer endemic and non-endemic communities. CONCLUSIONS/SIGNIFICANCE: This is the first report of experimental infection of amoebae with M. ulcerans and of the detection of the marker IS2404 in amoeba cultures isolated from the environment. We conclude that amoeba are potential natural hosts for M. ulcerans, yet remain sceptical about their implication in the transmission of M. ulcerans to humans and their importance in the epidemiology of Buruli ulcer.

Indexed as

Disease ReservoirsAmoebaBuruli UlcerDNA, BacterialDNA Transposable ElementsEnvironmental MicrobiologyGhanaHumansMicrobial ViabilityMolecular Sequence DataMycobacteriumPhagocytosisSequence Analysis, DNADNA, BacterialDNA Transposable Elements

Identifiers

PMID22880141
PMCPMC3413716
OpenAlexW1971516677

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.