Evidence map›Paper›PMID 26445012›Full record

ArticlePloS one2015

The Role of Efflux Pumps in Schistosoma mansoni Praziquantel Resistant Phenotype.

António Pinto-Almeida, Tiago Mendes, Ana Armada, Silvana Belo, Emanuel Carrilho, Miguel Viveiros, Ana Afonso

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

23 citing papers in PubMed, 49 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Article
  5. Review
  6. Article
  7. Schistosoma mansoni sarco/endoplasmic reticulum CaJournal of bioenergetics and biomembranes · 2020
    Review
  8. Article
  9. Albendazole Sulfoxide Plasma Levels and Efficacy of Antiparasitic Treatment in Patients With Parenchymal Neurocysticercosis.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2019
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Genomic analysis of Isometamidium Chloride resistance in Trypanosoma congolense.International journal for parasitology. Drugs and drug resistance · 2017
    Article
  17. Article
  18. Article
  19. Elimination of Schistosoma mansoni in infected mice by slow release of artemisone.International journal for parasitology. Drugs and drug resistance · 2017
    Article
  20. Frontiers in pharmacology · 2017
    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 4 institutions in 3 countries.

António Pinto-AlmeidaGraduate Program in Areas of Basic and Applied Biology, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal; Medical Parasitology Unit, Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Lisbon, Portugal; Universidade de São Paulo, Instituto de Química de São Carlos, São Carlos, SP, Brazil.
Tiago MendesMedical Parasitology Unit, Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Lisbon, Portugal; Institute of Biology, Universidade de Campinas, Campinas, SP, Brazil.
Ana ArmadaMedical Microbiology Unit, Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Lisbon, Portugal.
Silvana BeloMedical Parasitology Unit, Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Lisbon, Portugal.
Emanuel CarrilhoUniversidade de São Paulo, Instituto de Química de São Carlos, São Carlos, SP, Brazil.
Miguel ViveirosMedical Microbiology Unit, Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Lisbon, Portugal.
Ana AfonsoMedical Parasitology Unit, Global Health and Tropical Medicine, GHTM, Instituto de Higiene e Medicina Tropical, IHMT, Universidade Nova de Lisboa, UNL, Lisbon, Portugal; Universidade de São Paulo, Instituto de Química de São Carlos, São Carlos, SP, Brazil; Laboratory of Parasitology, Departamento de Morfologia e Patologia, Universidade Federal de São Carlos, São Carlos, SP, Brazil.
Universidade Nova de Lisboa · PTUniversidade de São Paulo · BRUniversidade Estadual de Campinas (UNICAMP) · BRUniversidade Federal de São Carlos · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSchistosomiasis is a neglected disease caused by a trematode of the genus Schistosoma that is second only to malaria in public health significance in Africa, South America, and Asia. Praziquantel (PZQ) is the drug of choice to treat this disease due to its high cure rates and no significant side effects. However, in the last years increasingly cases of tolerance to PZQ have been reported, which has caused growing concerns regarding the emergency of resistance to this drug. METHODOLOGY/PRINCIPAL

findingsHere we describe the selection of a parasitic strain that has a stable resistance phenotype to PZQ. It has been reported that drug resistance in helminths might involve efflux pumps such as members of ATP-binding cassette transport proteins, including P-glycoprotein and multidrug resistance-associated protein families. Here we evaluate the role of efflux pumps in Schistosoma mansoni resistance to PZQ, by comparing the efflux pumps activity in susceptible and resistant strains. The evaluation of the efflux activity was performed by an ethidium bromide accumulation assay in presence and absence of Verapamil. The role of efflux pumps in resistance to PZQ was further investigated comparing the response of susceptible and resistant parasites in the absence and presence of different doses of Verapamil, in an ex vivo assay, and these results were further reinforced through the comparison of the expression levels of SmMDR2 RNA by RT-PCR. CONCLUSIONS/SIGNIFICANCE: This work strongly suggests the involvement of Pgp-like transporters SMDR2 in Praziquantel drug resistance in S. mansoni. Low doses of Verapamil successfully reverted drug resistance. Our results might give an indication that a combination therapy with PZQ and natural or synthetic Pgp modulators can be an effective strategy for the treatment of confirmed cases of resistance to PZQ in S. mansoni.

Indexed as

Drug ResistanceAnimalsAnthelminticsATP-Binding Cassette Sub-Family B Member 4ATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily BHelminth ProteinsMaleMicePhenotypePraziquantelSchistosoma mansoniSchistosomiasis mansoniAnthelminticsATP-Binding Cassette Sub-Family B Member 4ATP-Binding Cassette TransportersATP Binding Cassette Transporter, Subfamily BHelminth ProteinsPraziquantel

Identifiers

PMID26445012
PMCPMC4596880
OpenAlexW2206654348

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.