Evidence map›Paper›PMID 32174285›Full record

ArticleParasitology2020

The effect of iron on

Luis Alberto Rivera-Rivas, Sebastián Lorenzo-Benito, Diana Belén Sánchez-Rodríguez, Jesús Ft Miranda-Ozuna, Esly Alejandra Euceda-Padilla, Jaime Ortega-López, Bibiana Chávez-Munguía, Anel Lagunes-Guillén, Beatriz Velázquez-Valassi, Lidia Jasso-Villazul and 1 more

Open access · greenAbstract read
In one paragraph

Article in Parasitology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
0.7field-weighted citation impact, top 33% 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

11 citing papers in PubMed, 13 citations in OpenAlex.

  1. Trichomonas vaginalis cathepsin D-like aspartic proteinase (Tv-CatD) is regulated by iron at different levels.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2026
    Article
  2. Review
  3. Review
  4. Viruses · 2025
    Review
  5. Iron triggersmBio · 2025
    Article
  6. Pathogens (Basel, Switzerland) · 2024
    Article
  7. Article
  8. Article
  9. Point-of-Care Diagnostic forPathogens (Basel, Switzerland) · 2023
    Article
  10. Review
  11. Review
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

11 authors at 2 institutions in 1 country.

Luis Alberto Rivera-RivasDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.
Sebastián Lorenzo-BenitoDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.
Diana Belén Sánchez-RodríguezDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.
Jesús Ft Miranda-OzunaDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.
Esly Alejandra Euceda-PadillaDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.
Jaime Ortega-LópezDepartamento de Biotecnología y Bioingeniería, CINVESTAV-IPN, CP 07360, Mexico City, Mexico.
Bibiana Chávez-MunguíaDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.
Anel Lagunes-GuillénDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.
Beatriz Velázquez-ValassiDepartamento de Vigilancia Epidemiológica del Hospital General de México 'Eduardo Liceaga', CP 06720, Mexico City, Mexico.
Lidia Jasso-VillazulUnidad de Medicina Preventiva del Hospital General de México 'Eduardo Liceaga', CP 06720, Mexico City, Mexico.
Rossana ArroyoDepartamento de Infectómica y Patogénesis Molecular, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), CP 07360, Mexico City, Mexico.ORCID 0000-0002-8193-9700
Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional · MXHospital General de México · MX

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Trichomonas vaginalis (Tv) induces host cell damage through cysteine proteinases (CPs) modulated by iron. An immunoproteomic analysis showed that trichomoniasis patient sera recognize various CPs, also some of them are present in vaginal washes (VWs). Thus, the goal of this work was to determine whether TvCP2 is expressed during infection and to assess the effect of iron on TvCP2 expression, localization and contribution to in vitro cellular damage. Western-blotting (WB) assays using TvCP2r and vaginitis patient serum samples showed that 6/9 Tv (+) but none of the Tv (-) patient sera recognized TvCP2r. WB using an anti-TvCP2r antibody and VWs from the same patients showed that in all of the Tv (+) but none of the Tv (-) VWs, the anti-TvCP2r antibody detected a 27 kDa protein band that corresponded to the mature TvCP2, which was confirmed by mass spectrometry analysis. Iron decreased the amount of TvCP2 mRNA and the protein localized on the parasite surface and cytoplasmic vesicles concomitant with the cytotoxic effect of TvCP2 on HeLa cells. Parasites pretreated with the anti-TvCP2r antibody also showed reduced levels of cytotoxicity and apoptosis induction in HeLa cell monolayers. In conclusion, these results show that TvCP2 is expressed during trichomonal infection and plays an important role in the in vitro HeLa cell cytotoxic damage under iron-restricted conditions.

Indexed as

Bodily SecretionsCysteine ProteasesFemaleHumansIronProtozoan ProteinsTrichomonas vaginalisVaginaCysteine ProteasesIronProtozoan ProteinsCathepsin L-like cysteine proteinasescellular apoptosis inductioncytotoxicityimmunogenic proteinaseirontrichocystatin-3 (TC-3)Trichomonas vaginalisTvCP2vaginal secretions

Identifiers

PMID32174285
PMCPMC10318259
OpenAlexW3011944316

What OpenQuestion holds

Textmetadata
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.