Evidence map›Paper›PMID 26303803›Full record

ArticleAntimicrobial agents and chemotherapy2015

Guanabenz repurposed as an antiparasitic with activity against acute and latent toxoplasmosis.

Imaan Benmerzouga, Lisa A Checkley, Michael T Ferdig, Gustavo Arrizabalaga, Ronald C Wek, William J Sullivan

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 2 pooled it
2.6field-weighted citation impact, top 12% 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

41 citing papers in PubMed, 2 syntheses or guidelines pooled it, 64 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Review
  5. Review
  6. Tartrolon E rapidly blocks Toxoplasma gondii capacity to invade host cells.International journal for parasitology. Drugs and drug resistance · 2025
    Article
  7. Article
  8. Article
  9. Review
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  12. Article
  13. Approaches for TargetingPathogens (Basel, Switzerland) · 2024
    Review
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  16. Article
  17. The apicoplast is important for the viability and persistence ofProceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  18. Review
  19. A Review of the Biological Activity of Amidrazone Derivatives.Pharmaceuticals (Basel, Switzerland) · 2022
    Review
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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

6 authors at 3 institutions in 1 country.

Imaan BenmerzougaDepartment of Pharmacology & Toxicology, Indiana University School of Medicine, Indianapolis, Indiana, USA Department of Biochemistry & Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Lisa A CheckleyDepartment of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, USA.
Michael T FerdigDepartment of Biological Sciences, Eck Institute for Global Health, University of Notre Dame, Notre Dame, Indiana, USA.
Gustavo ArrizabalagaDepartment of Pharmacology & Toxicology, Indiana University School of Medicine, Indianapolis, Indiana, USA Department of Microbiology & Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
Ronald C WekDepartment of Biochemistry & Molecular Biology, Indiana University School of Medicine, Indianapolis, Indiana, USA.
William J SullivanDepartment of Pharmacology & Toxicology, Indiana University School of Medicine, Indianapolis, Indiana, USA Department of Microbiology & Immunology, Indiana University School of Medicine, Indianapolis, Indiana, USA wjsulliv@iu.edu.
Indiana University – Purdue University Indianapolis · USUniversity of Notre Dame · USIndiana University School of Medicine

Funding

Immunology and Infectious Diseases Training ProgramT32AI060519 · NIAID · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI MARK H KAPLAN · 2004 to 2026
$6.0M
Inhibition of phosphatase activity as a novel treatment for chronic toxoplasmosisR21AI105786 · NIAID · INDIANA UNIVERSITY INDIANAPOLIS · PI SULLIVAN, WILLIAM J, WEK, RONALD C · 2013 to 2014
$413k
NIAID NIH HHS AI105786NIAID NIH HHS R21 AI105786NIAID NIH HHS T32 AI060519
6 · The paper itself

Abstract

Toxoplasma gondii is a protozoan parasite that persists as a chronic infection. Toxoplasma evades immunity by forming tissue cysts, which reactivate to cause life-threatening disease during immune suppression. There is an urgent need to identify drugs capable of targeting these latent tissue cysts, which tend to form in the brain. We previously showed that translational control is critical during infections with both replicative and latent forms of Toxoplasma. Here we report that guanabenz, an FDA-approved drug that interferes with translational control, has antiparasitic activity against replicative stages of Toxoplasma and the related apicomplexan parasite Plasmodium falciparum (a malaria agent). We also found that inhibition of translational control interfered with tissue cyst biology in vitro. Toxoplasma bradyzoites present in these abnormal cysts were diminished and misconfigured, surrounded by empty space not seen in normal cysts. These findings prompted analysis of the efficacy of guanabenz in vivo by using established mouse models of acute and chronic toxoplasmosis. In addition to protecting mice from lethal doses of Toxoplasma, guanabenz has a remarkable ability to reduce the number of brain cysts in chronically infected mice. Our findings suggest that guanabenz can be repurposed into an effective antiparasitic with a unique ability to reduce tissue cysts in the brain.

Indexed as

AnimalsAntiparasitic AgentsGuanabenzMiceMice, Inbred BALB CPlasmodium falciparumToxoplasmaToxoplasmosis, AnimalAntiparasitic AgentsGuanabenz

Identifiers

PMID26303803
PMCPMC4604420
OpenAlexW1898949048

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.