Evidence map›Paper›PMID 16436721›Full record

ArticleAntimicrobial agents and chemotherapy2006

Potencies of human immunodeficiency virus protease inhibitors in vitro against Plasmodium falciparum and in vivo against murine malaria.

Katherine T Andrews, David P Fairlie, Praveen K Madala, John Ray, David M Wyatt, Petrina M Hilton, Lewis A Melville, Lynette Beattie, Donald L Gardiner, Robert C Reid and 4 more

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 69 papers.

0numbers the graph read from it
0cells of the map it votes in
69citing papers in PubMed
9.3field-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

69 citing papers in PubMed, 130 citations in OpenAlex.

  1. Trial
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  6. Molecular biology of the cell · 2025
    Article
  7. Article
  8. Review
  9. Proteases: Role in Various Human Diseases.Current pharmaceutical biotechnology · 2025
    Review
  10. Review
  11. Article
  12. Inhibition ofCurrent research in structural biology · 2024
    Article
  13. Article
  14. Review
  15. Article
  16. Review
  17. Multipurpose Drugs Active Against BothFrontiers in cellular and infection microbiology · 2021
    Review
  18. Review
  19. Repurposing Drugs to Fight Hepatic Malaria Parasites.Molecules (Basel, Switzerland) · 2020
    Review
  20. Article

9 more citing papers are in PubMed but not listed here.

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

14 authors at 4 institutions in 2 countries.

Katherine T AndrewsQueensland Institute of Medical Research and Australian Centre for International and Tropical Health and Nutrition, 300 Herston Road, Herston, Queensland 4029, Australia. kathyA@qimr.edu.au
David P Fairlie
Praveen K Madala
John Ray
David M Wyatt
Petrina M Hilton
Lewis A Melville
Lynette Beattie
Donald L Gardiner
Robert C Reid
Martin J Stoermer
Tina Skinner-Adams
Colin Berry
James S McCarthy
QIMR Berghofer Medical Research Institute · AUUniversity of Queensland · AUCardiff University · GBSt Vincent's Hospital Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Parasite resistance to antimalarial drugs is a serious threat to human health, and novel agents that act on enzymes essential for parasite metabolism, such as proteases, are attractive targets for drug development. Recent studies have shown that clinically utilized human immunodeficiency virus (HIV) protease inhibitors can inhibit the in vitro growth of Plasmodium falciparum at or below concentrations found in human plasma after oral drug administration. The most potent in vitro antimalarial effects have been obtained for parasites treated with saquinavir, ritonavir, or lopinavir, findings confirmed in this study for a genetically distinct P. falciparum line (3D7). To investigate the potential in vivo activity of antiretroviral protease inhibitors (ARPIs) against malaria, we examined the effect of ARPI combinations in a murine model of malaria. In mice infected with Plasmodium chabaudi AS and treated orally with ritonavir-saquinavir or ritonavir-lopinavir, a delay in patency and a significant attenuation of parasitemia were observed. Using modeling and ligand docking studies we examined putative ligand binding sites of ARPIs in aspartyl proteases of P. falciparum (plasmepsins II and IV) and P. chabaudi (plasmepsin) and found that these in silico analyses support the antimalarial activity hypothesized to be mediated through inhibition of these enzymes. In addition, in vitro enzyme assays demonstrated that P. falciparum plasmepsins II and IV are both inhibited by the ARPIs saquinavir, ritonavir, and lopinavir. The combined results suggest that ARPIs have useful antimalarial activity that may be especially relevant in geographical regions where HIV and P. falciparum infections are both endemic.

Indexed as

AnimalsAspartic Acid EndopeptidasesBinding SitesCrystallizationFemaleHemoglobinsHIV Protease InhibitorsMalariaMiceMice, Inbred C57BLPlasmodium falciparumProtein ConformationProtozoan ProteinsAspartic Acid EndopeptidasesHemoglobinsHIV Protease Inhibitorsplasmepsinplasmepsin IIProtozoan Proteins

Identifiers

PMID16436721
PMCPMC1366900
OpenAlexW1988980918

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.