Evidence map›Paper›PMID 32517156›Full record

ArticleTropical medicine and infectious disease2020

Evaluation of Rapid Extraction Methods Coupled with a Recombinase Polymerase Amplification Assay for Point-of-Need Diagnosis of Post-Kala-Azar Dermal Leishmaniasis.

Rajashree Chowdhury, Prakash Ghosh, Md Anik Ashfaq Khan, Faria Hossain, Khaledul Faisal, Rupen Nath, James Baker, Ahmed Abd El Wahed, Shomik Maruf, Proggananda Nath and 5 more

Open access · goldAbstract read
In one paragraph

Article in Tropical medicine and infectious disease, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.5field-weighted citation impact, top 10% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 19 citations in OpenAlex.

  1. Pooled it
  2. A multi-country phase 2 study to evaluate the suitcase lab for rapid detection of SARS-CoV-2 in seven Sub-Saharan African countries: Lessons from the field.Journal of clinical virology : the official publication of the Pan American Society for Clinical Virology · 2023
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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

15 authors at 5 institutions in 3 countries.

Rajashree ChowdhuryNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.ORCID 0000-0003-2619-2445
Prakash GhoshNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
Md Anik Ashfaq KhanNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
Faria HossainNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
Khaledul FaisalNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
Rupen NathNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
James BakerNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
Ahmed Abd El WahedInstitute of Animal Hygiene and Veterinary Public Health, University of Leipzig, D-04103 Leipzig, Germany.
Shomik MarufNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
Proggananda NathInfection and Tropical Medicine, Mymensingh Medical College and Hospital (MMCH), Mymensingh 2200, Bangladesh.
Debashis GhoshNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
Md Masud-Ur-RashidDepartment of Cardiovascular and Thoracic Surgery, National Heart Foundation Hospital and Research Institute, Dhaka 1216, Bangladesh.
Md Utba Bin RashidNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.ORCID 0000-0002-2530-9982
Malcolm S DuthieHost Directed Therapeutics (HDT) Bio Corp, Seattle, WA 98102, USA.
Dinesh MondalNutrition and Clinical Service Division (NCSD), International Centre for Diarrhoeal Disease Research, Bangladesh, (icddr,b), Dhaka 1212, Bangladesh.
International Centre for Diarrhoeal Disease Research · BDLeipzig University · DEMymensingh Medical College Hospital · BDNational Heart Foundation Hospital & Research Institute · BDUniversity of London · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

To detect Post-kala-azar leishmaniasis (PKDL) cases, several molecular methods with promising diagnostic efficacy have been developed that involve complicated and expensive DNA extraction methods, thus limiting their application in resource-poor settings. As an alternative, we evaluated two rapid DNA extraction methods and determined their impact on the detection of the parasite DNA using our newly developed recombinase polymerase amplification (RPA) assay. Skin samples were collected from suspected PKDL cases following their diagnosis through national guidelines. The extracted DNA from three skin biopsy samples using three different extraction methods was subjected to RPA and qPCR. The qPCR and RPA assays exhibited highest sensitivities when reference DNA extraction method using Qiagen (Q) kit was followed. In contrast, the sensitivity of the RPA assay dropped to 76.7% and 63.3%, respectively, when the boil & spin (B&S) and SpeedXtract (SE) rapid extraction methods were performed. Despite this compromised sensitivity, the B&S-RPA technique yielded an excellent agreement with both Q-qPCR (k = 0.828) and Q-RPA (k = 0.831) techniques. As expected, the reference DNA extraction method was found to be superior in terms of diagnostic efficacy. Finally, to apply the rapid DNA extraction methods in resource-constrained settings, further methodological refinement is warranted to improve DNA yield and purity through rigorous experiments.

Indexed as

DNA extractionpoint-of-need diagnosispost-kala-azar dermal leishmaniasis (PKDL)real-time PCRrecombinase polymerase amplification (RPA)

Identifiers

PMID32517156
PMCPMC7344569
OpenAlexW3033368696

What OpenQuestion holds

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LicenceCC BY
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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.