Evidence map›Paper›PMID 28061871›Full record

ArticleMalaria journal2017

LAMP kit for diagnosis of non-falciparum malaria in Plasmodium ovale infected patients.

Juan Cuadros, Alexandra Martin Ramírez, Iveth J González, Xavier C Ding, Ramon Perez Tanoira, Gerardo Rojo-Marcos, Peña Gómez-Herruz, Jose Miguel Rubio

Abstract readEvaluation Study
In one paragraph

Article in Malaria journal, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

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

17 citing papers in PubMed.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Malaria diagnostic update: From conventional to advanced method.Journal of clinical laboratory analysis · 2022
    Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Diagnostic Methods for Non-Falciparum Malaria.Frontiers in cellular and infection microbiology · 2021
    Review
  14. Article
  15. Article
  16. 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

8 authors.

Juan CuadrosDepartment of Clinical Microbiology and Parasitology, Hospital Príncipe de Asturias, 28805, Alcalá de Henares, Madrid, Spain. jcuadros48@gmail.com.ORCID 0000-0003-4098-4377
Alexandra Martin RamírezDepartment of Clinical Microbiology and Parasitology, Hospital de la Princesa, Madrid, Spain.
Iveth J GonzálezFoundation for Innovative New Diagnostics (FIND), Geneva, Switzerland.
Xavier C DingFoundation for Innovative New Diagnostics (FIND), Geneva, Switzerland.
Ramon Perez TanoiraDepartment of Medicine and Laboratory, Gambo Rural General Hospital, Kore, West-Arsi, Gambo, Ethiopia.
Gerardo Rojo-MarcosDepartment of Internal Medicine, Hospital Príncipe de Asturias, Madrid, Spain.
Peña Gómez-HerruzDepartment of Clinical Microbiology and Parasitology, Hospital Príncipe de Asturias, 28805, Alcalá de Henares, Madrid, Spain.
Jose Miguel RubioMalaria and Emergent Protozoa Laboratory, National Center for Microbiology of Majadahonda, Madrid, Spain.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMicroscopy and rapid diagnosis tests have a limited sensitivity in diagnosis of malaria by Plasmodium ovale. The LAMP kit (LoopAMP®) can be used in the field without special equipment and could have an important role in malaria control programmes in endemic areas and for malaria diagnosis in returned travellers. The performance of the Pan primer of the kit in detecting malaria by P. ovale was compared with the results of standard nPCR in samples of patients returning from P. ovale endemic areas.

methodsPlasmodium ovale positive samples (29, tested by PCR and/or microscopy) and malaria negative specimens (398, tested by microscopy and PCR) were collected in different hospitals of Europe from June 2014 to March 2016 and frozen at -20 °C. Boil and spin method was used to extract DNA from all samples and amplification was performed with LoopAMP® MALARIA kit (Eiken Chemical, Japan) in an automated turbidimeter (Eiken 500). The results of LAMP read by turbidimetry and with the naked eye were compared.

resultsThe kit showed a sensitivity of 100% and a specificity of 97.24% with positive and negative predictive values of 72.5 and 100%, respectively. Naked eyed readings were in accordance with turbidimetry readings (sensitivity, 92.5%, specificity, 98.96% and positive and negative predictive values, respectively, 90.24 and 99.22%). The limit of detection of LAMP assay for P. ovale was between 0.8 and 2 parasites/µl.

conclusionsThe Pan primer of the Malaria kit LoopAMP® can detect P. ovale at very low-levels and showed a predictive negative value of 100%. This tool can be useful in malaria control and elimination programmes and in returned travellers from P. ovale endemic areas. Naked eye readings are equivalent to automated turbidimeter readings in specimens obtained with EDTA.

Indexed as

EuropeHumansMalariaMolecular Diagnostic TechniquesNucleic Acid Amplification TechniquesPlasmodium ovalePredictive Value of TestsSensitivity and SpecificityLAMPLoop-mediated isothermal amplificationMalariaPlasmodium ovale

Identifiers

PMID28061871
PMCPMC5219760

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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.