Evidence map›Paper›PMID 29391022›Full record

ArticleMalaria journal2018

An automated haematology analyzer XN-30 distinguishes developmental stages of falciparum malaria parasite cultured in vitro.

Takahiro Tougan, Yuhgi Suzuki, Sawako Itagaki, Munehisa Izuka, Yuji Toya, Kinya Uchihashi, Toshihiro Horii

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 pooled it
7.4field-weighted citation impact, top 3% 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

32 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.

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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

7 authors at 2 institutions in 1 country.

Takahiro TouganDepartment of Molecular Protozoology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Yuhgi SuzukiSysmex Corporation, 4-4-4 Takatsukadai Nishiku, Kobe, Hyogo, 651-2271, Japan.
Sawako ItagakiDepartment of Molecular Protozoology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan.
Munehisa IzukaSysmex Corporation, 4-4-4 Takatsukadai Nishiku, Kobe, Hyogo, 651-2271, Japan.
Yuji ToyaSysmex Corporation, 4-4-4 Takatsukadai Nishiku, Kobe, Hyogo, 651-2271, Japan.
Kinya UchihashiSysmex Corporation, 4-4-4 Takatsukadai Nishiku, Kobe, Hyogo, 651-2271, Japan.
Toshihiro HoriiDepartment of Molecular Protozoology, Research Institute for Microbial Diseases, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan. horii@biken.osaka-u.ac.jp.
Sysmex (Japan) · JPOsaka University · JP

Funding

Ministry of Education, Culture, Sports, Science and Technology 16K08759Ministry of Education, Culture, Sports, Science and Technology 25460754
6 · The paper itself

Abstract

backgroundThe automated haematology analyzer XN-30 (Sysmex, Kobe, Japan) easily and rapidly detects malarial parasites in clinical blood samples using flow cytometry. The XN-30 analyzer is able to distinguish each developmental stage by measuring DNA content and cell size. Thus, it was expected to be capable of quantifying the developmental stages of cultured falciparum parasite. To achieve this requirement, a modified algorithm was tested for its validity and reliability using in vitro cultured falciparum parasite.

resultsThe XN-30 analyzer automatically measured each developmental stage as well as total parasitaemia. Comparison of the parasitaemia obtained using the XN-30 analyzer equipped with the modified algorithm with that obtained using microscopy examination of Giemsa-stained smears revealed the greater sensitivity and reproducibility of the former. The XN-30 analyzer also detected free merozoites and purified gametocytes.

conclusionsThe XN-30 analyzer allows the precise recognition and enumeration of total and each developmental stages of cultured falciparum parasites, and permits the sensitive and reproducible calculation of parasitaemia. The results indicate the potential of the XN-30 analyzer for basic research on malarial biology, anti-malarial drug discovery, and evaluation of drug efficacy.

Indexed as

Automation, LaboratoryCulture TechniquesErythrocytesFlow CytometryHumansMalaria, FalciparumMerozoitesParasitemiaParasitologyPlasmodium falciparumBlood stageFlow cytometryin vitro culturePlasmodium falciparumXN-30 analyzer

Identifiers

PMID29391022
PMCPMC5796453
OpenAlexW2795159665

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

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.