Evidence map›Paper›PMID 31685024›Full record

ArticleParasites & vectors2019

Development of a recombinase polymerase amplification (RPA) fluorescence assay for the detection of Schistosoma haematobium.

Penelope Rostron, Tom Pennance, Faki Bakar, David Rollinson, Stefanie Knopp, Fiona Allan, Fatma Kabole, Said M Ali, Shaali M Ame, Bonnie L Webster

Open access · goldAbstract read
In one paragraph

Article in Parasites & vectors, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 1 pooled it
6.3field-weighted citation impact, top 2% 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

39 citing papers in PubMed, 1 synthesis or guideline pooled it, 69 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

10 authors at 4 institutions in 3 countries.

Penelope RostronFaculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK.
Tom PennanceDepartment of Life Sciences, Natural History Museum, London, UK.
Faki BakarPublic Health Laboratory - Ivo de Carneri, P.O. Box 122, Chake-Chake, Pemba, United Republic of Tanzania.
David RollinsonDepartment of Life Sciences, Natural History Museum, London, UK.
Stefanie KnoppDepartment of Life Sciences, Natural History Museum, London, UK.
Fiona AllanDepartment of Life Sciences, Natural History Museum, London, UK.
Fatma KaboleZanzibar Neglected Diseases Programme, Ministry of Health, P.O. Box 236, Zanzibar Town, Unguja, United Republic of Tanzania.
Said M AliPublic Health Laboratory - Ivo de Carneri, P.O. Box 122, Chake-Chake, Pemba, United Republic of Tanzania.
Shaali M AmePublic Health Laboratory - Ivo de Carneri, P.O. Box 122, Chake-Chake, Pemba, United Republic of Tanzania.
Bonnie L WebsterDepartment of Life Sciences, Natural History Museum, London, UK. b.webster@nhm.ac.uk.ORCID http://orcid.org/0000-0003-0930-9314
Natural History Museum · GBPublic Health Laboratory Ivo de Carneri · TZLondon School of Hygiene & Tropical Medicine · GBZanzibar University · TZ

Funding

Royal Society RG160395
6 · The paper itself

Abstract

backgroundAccurate diagnosis of urogenital schistosomiasis is vital for surveillance and control programmes. While a number of diagnostic techniques are available there is a need for simple, rapid and highly sensitive point-of-need (PON) tests in areas where infection prevalence and intensity are low. Recombinase Polymerase Amplification (RPA) is a sensitive isothermal molecular diagnostic technology that is rapid, portable and has been used at the PON for several pathogens.

resultsA real time fluorescence RPA assay (RT-ShDra1-RPA) targeting the Schistosoma haematobium Dra1 genomic repeat region was developed and was able to detect 1 fg of S. haematobium gDNA. Results were obtained within 10 minutes using a small portable battery powered tube scanner device that incubated reactions at 40 °C, whilst detecting DNA amplification and fluorescence over time. The assay's performance was evaluated using 20 urine samples, with varying S. haematobium egg counts, from school children from Pemba Island, Zanzibar Archipelago, Tanzania. Prior to RPA analysis, samples were prepared using a quick crude field DNA extraction method, the Speed Extract Kit (Qiagen, Manchester, UK). Positive assay results were obtained from urine samples with egg counts of 1-926 eggs/10 ml, except for two samples, which had inconclusive results. These two samples had egg counts of two and three eggs/10 ml of urine.

conclusionsThe RT-ShDra1-RPA assay proved robust for S. haematobium gDNA detection and was able to amplify and detect S. haematobium DNA in urine samples from infected patients. The assay's speed and portability, together with the use of crude sample preparation methods, could advance the rapid molecular diagnosis of urogenital schistosomiasis at the PON within endemic countries.

Indexed as

AnimalsChildFluorescenceHumansNeglected DiseasesPoint-of-Care TestingReal-Time Polymerase Chain ReactionSchistosoma haematobiumSchistosomiasis haematobiaSensitivity and SpecificityTanzaniaControlDiagnosticsEliminationIsothermalMolecularPoint-of-need (PON)RPASchistosoma haematobiumSurveillanceUrogenital schistosomiasis

Identifiers

PMID31685024
PMCPMC6827214
OpenAlexW2983278422

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.