Evidence map›Paper›PMID 22395660›Full record

ArticleParasitology research2012

Molecular characterization of Acanthamoeba isolated in water treatment plants and comparison with clinical isolates.

A Magnet, A L Galván, S Fenoy, F Izquierdo, C Rueda, C Fernandez Vadillo, J Pérez-Irezábal, K Bandyopadhyay, G S Visvesvara, A J da Silva and 1 more

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Parasitology research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed, 1 pooled it
–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

28 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Complicated Diagnosis and Treatment of Rare PainlessJournal of clinical medicine · 2025
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  7. Frontiers in microbiology · 2021
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  8. Parasitology · 2020
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  9. Extracellular Vesicles from the ProtozoaBioengineering (Basel, Switzerland) · 2019
    Review
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  11. Article
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  15. The Influence ofFrontiers in microbiology · 2018
    Article
  16. Molecular and Morphometric Characterization ofJundishapur journal of microbiology · 2016
    Article
  17. Article
  18. Article
  19. Isolation and molecular characterization of free-living amoebae from different water sources in Italy.International journal of environmental research and public health · 2015
    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

11 authors.

A MagnetParasitology Laboratory, San Pablo CEU University, Urbanización Montepríncipe, Boadilla del Monte, Madrid, Spain.
A L Galván
S Fenoy
F Izquierdo
C Rueda
C Fernandez Vadillo
J Pérez-Irezábal
K Bandyopadhyay
G S Visvesvara
A J da Silva
C del Aguila

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A total of 116 samples (44 clinical specimens and 72 environmental samples) have been analyzed for the presence of Acanthamoeba. The environmental samples (ESs) were collected from four drinking water treatment plants (DWTP, n=32), seven wastewater treatment plants (n=28), and six locations of influence (n=12) on four river basins from the central area of Spain (winter-spring 2008). Water samples were concentrated by using the IDEXX Filta-Max(®) system. Acanthamoeba was identified in 65 of the 72 ESs by culture isolation (90.3%) and 63 by real-time PCR (87.5%), resulting in all sampling points (100%) positive for Acanthamoeba when considering both techniques and all the time period analyzed. Nine of the 44 clinical specimens were positive for Acanthamoeba. Seventeen Acanthamoeba strains (eight from four DWTP and nine from clinical samples) were also established in axenic-PYG medium. Twenty-four of the ESs and the 17 Acanthamoeba sp. strains were genotyped as T4/1, T4/8, and T4/9. The eight strains isolated from the DWTP samples were inoculated in nude mouse to ascertain their potential pathogenicity in this model. Animals that were inoculated died or showed central nervous system symptoms 9 days post-inoculation. Examination of immunofluorescence-stained brain and lung tissue sections showed multiple organisms invading both tissues, and re-isolation of throphozoites was successful in these tissues of all infected animals. For the first time, potentially pathogenic Acanthamoeba T4 has been detected in 100% of different types of water samples including tap water and sewage effluents in the central area of Spain suggesting a potential health threat for humans especially for the contact lens wearers.

Indexed as

AcanthamoebaAmebiasisAnimalsBrainDNA, ProtozoanGenotypeHumansLungMiceMice, NudeReal-Time Polymerase Chain ReactionSpainSurvival AnalysisWaterWater PurificationDNA, ProtozoanWater

Identifiers

What OpenQuestion holds

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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.