Evidence map›Paper›PMID 34111339›Full record

ArticleBiomedica : revista del Instituto Nacional de Salud2021

Microscopic and molecular evaluation of Strongyloides venezuelensis in an experimental life cycle using Wistar rats.

Jairo Tobar, Daniel Ramos-Sarmiento, Diana Tayupanta, Melina Rodríguez, Fabián Aguilar

Abstract read
In one paragraph

Article in Biomedica : revista del Instituto Nacional de Salud, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. 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

5 authors.

Jairo TobarÁrea de Parasitología y Bioterios, Gestión de Investigación, Desarrollo e Innovación, Instituto Nacional de Investigación en Salud Pública Leopoldo Izquieta Pérez, Quito, Ecuador. biomedica@ins.gov.co.
Daniel Ramos-SarmientoÁrea de Parasitología y Bioterios, Gestión de Investigación, Desarrollo e Innovación, Instituto Nacional de Investigación en Salud Pública Leopoldo Izquieta Pérez, Quito, Ecuador. danielrs2012@gmail.com.
Diana TayupantaÁrea de Parasitología y Bioterios, Gestión de Investigación, Desarrollo e Innovación, Instituto Nacional de Investigación en Salud Pública Leopoldo Izquieta Pérez, Quito, Ecuador. biomedica@ins.gov.co.
Melina RodríguezÁrea de Parasitología y Bioterios, Gestión de Investigación, Desarrollo e Innovación, Instituto Nacional de Investigación en Salud Pública Leopoldo Izquieta Pérez, Quito, Ecuador. biomedica@ins.gov.co.
Fabián AguilarÁrea de Parasitología y Bioterios, Gestión de Investigación, Desarrollo e Innovación, Instituto Nacional de Investigación en Salud Pública Leopoldo Izquieta Pérez, Quito, Ecuador. biomedica@ins.gov.co.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionStrongyloides venezuelensis is a nematode whose natural host is rats. It is used as a model for the investigation of human strongyloidiasis caused by S. stercoralis. The latter is a neglected tropical disease in Ecuador where there are no specific plans to mitigate this parasitic illness.

objectiveTo evaluate the stages of S. venezuelensis in an experimental life cycle using Wistar rats. MATERIALS AND

methodsMale Wistar rats were used to replicate the natural biological cycle of S. venezuelensis and describe its morphometric characteristics, as well as its parasitic development. Furthermore, the production of eggs per gram of feces was quantified using two diagnostic techniques and assessment of parasite load: Kato-Katz and qPCR.

resultsViable larval stages (L1, L2, L3) could be obtained up to 96 hours through fecal culture. Parthenogenetic females were established in the duodenum on the fifth day postinfection. Fertile eggs were observed in the intestinal tissue and fresh feces where the production peak occurred on the 8th. day post-infection. Unlike Kato-Katz, qPCR detected parasitic DNA on days not typically reported.

conclusionsThe larval migration of S. venezuelensis within the murine host in an experimental environment was equivalent to that described in its natural biological cycle. The Kato-Katz quantitative technique showed to be quick and low-cost, but the qPCR had greater diagnostic precision. This experimental life cycle can be used as a tool for the study of strongyloidiasis or other similar nematodiasis.

Indexed as

StrongyloidesStrongyloidiasisAnimalsFecesFemaleLarvaLife Cycle StagesMaleMiceRatsRats, WistarEcuadorintestinal diseaseslife cycle stagesNematodaparasiticStrongyloidesWistar rats

Identifiers

PMID34111339
PMCPMC8318392

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.