Evidence map›Paper›PMID 23626733›Full record

ArticlePloS one2013

An image analysis algorithm for malaria parasite stage classification and viability quantification.

Seunghyun Moon, Sukjun Lee, Heechang Kim, Lucio H Freitas-Junior, Myungjoo Kang, Lawrence Ayong, Michael A E Hansen

Abstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. CanJournal of parasitology research · 2020
    Article
  9. Article
  10. Image analysis and machine learning for detecting malaria.Translational research : the journal of laboratory and clinical medicine · 2018
    Review
  11. Article
  12. Article
  13. Article
  14. Article
  15. Contribution of high-content imaging technologies to the development of anti-infective drugs.Cytometry. Part A : the journal of the International Society for Analytical Cytology · 2016
    Review
  16. Spirocyclic chromanes exhibit antiplasmodial activities and inhibit all intraerythrocytic life cycle stages.International journal for parasitology. Drugs and drug resistance · 2016
    Article
  17. 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

7 authors.

Seunghyun MoonImage Mining (IM) Group, Institut Pasteur Korea, Seongnam-si, Gyeonggi-do, South Korea.
Sukjun Lee
Heechang Kim
Lucio H Freitas-Junior
Myungjoo Kang
Lawrence Ayong
Michael A E Hansen

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

With more than 40% of the world's population at risk, 200-300 million infections each year, and an estimated 1.2 million deaths annually, malaria remains one of the most important public health problems of mankind today. With the propensity of malaria parasites to rapidly develop resistance to newly developed therapies, and the recent failures of artemisinin-based drugs in Southeast Asia, there is an urgent need for new antimalarial compounds with novel mechanisms of action to be developed against multidrug resistant malaria. We present here a novel image analysis algorithm for the quantitative detection and classification of Plasmodium lifecycle stages in culture as well as discriminating between viable and dead parasites in drug-treated samples. This new algorithm reliably estimates the number of red blood cells (isolated or clustered) per fluorescence image field, and accurately identifies parasitized erythrocytes on the basis of high intensity DAPI-stained parasite nuclei spots and Mitotracker-stained mitochondrial in viable parasites. We validated the performance of the algorithm by manual counting of the infected and non-infected red blood cells in multiple image fields, and the quantitative analyses of the different parasite stages (early rings, rings, trophozoites, schizonts) at various time-point post-merozoite invasion, in tightly synchronized cultures. Additionally, the developed algorithm provided parasitological effective concentration 50 (EC50) values for both chloroquine and artemisinin, that were similar to known growth inhibitory EC50 values for these compounds as determined using conventional SYBR Green I and lactate dehydrogenase-based assays.

Indexed as

AlgorithmsAntimalarialsArtemisininsCells, CulturedCell SurvivalChloroquineErythrocytesFluorescent DyesHumansImage Processing, Computer-AssistedIndolesInhibitory Concentration 50Microscopy, FluorescenceMitochondriaOrganic ChemicalsPlasmodium falciparumAntimalarialsartemisininArtemisininsChloroquineDAPIFluorescent DyesIndolesOrganic Chemicalsred dye CMXRos

Identifiers

PMID23626733
PMCPMC3634010

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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.