Evidence map›Paper›PMID 19565268›Full record

ArticleParasitology research2009

Isolation and genotyping of potentially pathogenic Acanthamoeba and Naegleria species from tap-water sources in Osaka, Japan.

Akiko Edagawa, Akio Kimura, Takako Kawabuchi-Kurata, Yasuhiro Kusuhara, Panagiotis Karanis

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Article in Parasitology research, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed
–field-weighted citation impact
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

47 citing papers in PubMed.

  1. Genetic Classification of a Novel Genotype of the GenusTropical medicine and infectious disease · 2026
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  4. Opportunistic free-living amoebal pathogens.Pathogens and global health · 2022
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  8. Isolation ofPathogens (Basel, Switzerland) · 2020
    Article
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  10. Allovahlkampfia spelaea Causing Keratitis in Humans.PLoS neglected tropical diseases · 2016
    Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
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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

5 authors.

Akiko EdagawaDivision of Environmental Health, Osaka Prefectural Institute of Public Health, Osaka, Japan.
Akio Kimura
Takako Kawabuchi-Kurata
Yasuhiro Kusuhara
Panagiotis Karanis

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Here, we carried out a survey to determine the prevalence of free-living amoebae (FLA) in tap-water sources from rivers and water treatment plants located in Osaka Prefecture, Japan. A total of 374 raw water samples were collected from 113 sampling points. The samples were filtrated and transferred to non-nutrient agar plates seeded with a heat-killed suspension of Escherichia coli and incubated for 2 to 7 days at 30 degrees C or 42 degrees C. The plates were examined by microscopy to morphologically identify FLA families, and polymerase chain reaction and sequence analysis were then performed to define the species of the detected Naegleria and Acanthamoeba isolates. A total of 257 of 374 samples (68.7%) were positive for FLA by microscopy, and among these there were 800 FLA isolates, including Acanthamoeba and Naegleria species. Sequence analysis identified five Acanthamoeba spp. isolates of the known pathogenic T4 genotype and 43 Naegleria australiensis isolates, a reported pathogen to mice and also of concern as a potential pathogen to humans. Our results suggest a wide distribution of FLA, including potential pathogenic species, in tap-water sources of western Japan.

Indexed as

AcanthamoebaAnimalsCluster AnalysisDNA, ProtozoanDNA, RibosomalFresh WaterGenes, rRNAGenotypeJapanMicroscopyMolecular Sequence DataNaegleriaPhylogenyRNA, ProtozoanRNA, Ribosomal, 18SSequence Analysis, DNADNA, ProtozoanDNA, RibosomalRNA, ProtozoanRNA, Ribosomal, 18S

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Registered trials

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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.