Evidence map›Paper›PMID 23903976›Full record

ArticleMemorias do Instituto Oswaldo Cruz2013

Antischistosomal activity of a calcium channel antagonist on schistosomula and adult Schistosoma mansoni worms.

Vanessa Silva-Moraes, Flávia Fernanda Bubula Couto, Marah Mileib Vasconcelos, Neusa Araújo, Paulo Marcos Zech Coelho, Naftale Katz, Rafaella Fortini Queiroz Grenfell

Open access · diamondAbstract read
In one paragraph

Article in Memorias do Instituto Oswaldo Cruz, 2013. 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
1.2field-weighted citation impact, top 26% 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

17 citing papers in PubMed, 33 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Infection and drug resistance · 2020
    Article
  6. Anti-schistosomal action of the calcium channel agonist FPL-64176.International journal for parasitology. Drugs and drug resistance · 2019
    Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. TRP channels in schistosomes.International journal for parasitology. Drugs and drug resistance · 2016
    Review
  13. Review
  14. Natural products as leads in schistosome drug discovery.Molecules (Basel, Switzerland) · 2015
    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

7 authors at 3 institutions in 1 country.

Vanessa Silva-MoraesLaboratório de Esquistossomose, Centro de Pesquisas René Rachou-Fiocruz, Belo Horizonte, MG, Brasil.
Flávia Fernanda Bubula Couto
Marah Mileib Vasconcelos
Neusa Araújo
Paulo Marcos Zech Coelho
Naftale Katz
Rafaella Fortini Queiroz Grenfell
Fundação Oswaldo Cruz · BRUniversidade de Itaúna · BRFederal University of São João del-Rei · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Current schistosomiasis control strategies are largely based on chemotherapeutic agents and a limited number of drugs are available today. Praziquantel (PZQ) is the only drug currently used in schistosomiasis control programs. Unfortunately, this drug shows poor efficacy in patients during the earliest infection phases. The effects of PZQ appear to operate on the voltage-operated Ca2+ channels, which are located on the external Schistosoma mansoni membrane. Because some Ca2+ channels have dihydropyridine drug class (a class that includes nifedipine) sensitivity, an in vitro analysis using a calcium channel antagonist (clinically used for cardiovascular hypertension) was performed to determine the antischistosomal effects of nifedipine on schistosomula and adult worm cultures. Nifedipine demonstrated antischistosomal activity against schistosomula and significantly reduced viability at all of the concentrations used alone or in combination with PZQ. In contrast, PZQ did not show significant efficacy when used alone. Adult worms were also affected by nifedipine after a 24 h incubation and exhibited impaired motility, several lesions on the tegument and intense contractility. These data support the idea of Ca2+ channels subunits as drug targets and favour alternative therapeutic schemes when drug resistance has been reported. In this paper, strong arguments encouraging drug research are presented, with a focus on exploring schistosomal Ca2+ channels.

Indexed as

AnimalsCalcium Channel BlockersMiceNifedipineParasitic Sensitivity TestsPraziquantelSchistosoma mansoniSchistosomicidesCalcium Channel BlockersNifedipinePraziquantelSchistosomicides

Identifiers

PMID23903976
PMCPMC3970602
OpenAlexW2030827045

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.