Evidence map›Paper›PMID 35864411›Full record

ArticleActa parasitologica2022

Genotyping and Molecular Identification of Acanthamoeba Genotype T4 and Naegleria fowleri from Cerebrospinal Fluid Samples of Patients in Turkey: Is it the Pathogens of Unknown Causes of Death?

Mehmet Aykur, Derya Dirim Erdogan, Nur Selvi Gunel, Ayse Guler, Cigir Biray Avci, Nese Celebisoy, Cumhur Gunduz, Hande Dagci

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Article in Acta parasitologica, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
1.1field-weighted citation impact, top 24% 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

3 citing papers in PubMed, 6 citations in OpenAlex.

  1. Identification of Acantamoeba isolated from water resources located in the northwest of Iran by using the high-resolution melting analysis assay.International microbiology : the official journal of the Spanish Society for Microbiology · 2026
    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

8 authors at 2 institutions in 1 country.

Mehmet AykurDepartment of Parasitology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey. mehmetaykur@gmail.com.ORCID http://orcid.org/0000-0002-6100-1037
Derya Dirim ErdoganDepartment of Parasitology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey.
Nur Selvi GunelDepartment of Medical Biology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey.
Ayse GulerDepartment of Neurology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey.
Cigir Biray AvciDepartment of Medical Biology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey.
Nese CelebisoyDepartment of Neurology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey.
Cumhur GunduzDepartment of Medical Biology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey.
Hande DagciDepartment of Parasitology, Faculty of Medicine, Ege University, Bornova/İzmir, Turkey.
Ege University · TRTokat Gaziosmanpaşa Üniversitesi · TR

Funding

Ege Üniversitesi 11-TIP-078
6 · The paper itself

Abstract

purposeThis study was aimed to investigate the presence of pathogenic free-living amoebae (FLA) in suspected cases of meningoencephalitis with unknown causes of death in Turkey.

methodA total of 92 patients, who were diagnosed as meningoencephalitis, were enrolled. All cerebrospinal fluid (CSF) samples were directly microscopically examined and cultured. Acanthamoeba, N. fowleri and B. mandrillaris were further investigated using molecular diagnostic tools including real-time PCR, sequencing, and phylogenetic analyses.

resultsThe examined CSF samples were not found positive for the presence of FLA by microscopic examination and culture method. However, two CSF samples were detected positive by real-time PCR assay. Of the positive CSF samples, one was identified as Acanthamoeba genotype T4 and the second positive sample was identified as N. fowleri belonging to genotype II. Furthermore, the pathogens diagnoses was verified through Sanger sequencing.

conclusionThis study was significant to report the presence of Acanthamoeba genotype T4 and N. fowleri genotype II in CSF samples by real-time PCR assay. The present study shows the significance of primary amoebic meningoencephalitis (PAM) and granulomatous amoebic encephalitis (GAE) as one of the differential diagnoses to be considered by clinicians during the evaluation of suspected meningoencephalitis or cases of unknown cause in Turkey. Using real-time PCR, this has made the rapid detection, in a short time-frame, of Acanthamoeba and N. fowleri in CSF samples from patients. The problems with qPCR is that it is not available in every laboratory, reagents are expensive, and it requires skilled and expert personnel to set up these assays.

Indexed as

AcanthamoebaAmebiasisAmoebaMeningoencephalitisNaegleria fowleriCause of DeathGenotypeHumansPhylogenyTurkeyAcanthamoeba T4Cerebrospinal fluidGranulomatous amoebic encephalitisNaegleria fowleriPrimary amoebic meningoencephalitisReal-time PCRTurkey

Identifiers

PMID35864411
OpenAlexW4286382833

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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.