Evidence map›Paper›PMID 17698625›Full record

ArticleAntimicrobial agents and chemotherapy2007

A cysteine protease inhibitor cures Chagas' disease in an immunodeficient-mouse model of infection.

Patricia S Doyle, Yuan M Zhou, Juan C Engel, James H McKerrow

Open access · greenAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed
9.0field-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

62 citing papers in PubMed, 185 citations in OpenAlex.

  1. Pathogens (Basel, Switzerland) · 2026
    Article
  2. Review
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  4. Identification of a cell-active chikungunya virus nsP2 protease inhibitor using a covalent fragment-based screening approach.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  5. Article
  6. Review
  7. Review
  8. De Novo Design of Cathepsin B1 Inhibitors as Potential Anti-Schistosomal Agents Using Computational Studies.Advances and applications in bioinformatics and chemistry : AABC · 2022
    Article
  9. Article
  10. Article
  11. Review
  12. Repurposing Carvedilol as a Novel Inhibitor of theFrontiers in cellular and infection microbiology · 2021
    Article
  13. Review on Experimental Treatment Strategies AgainstJournal of experimental pharmacology · 2021
    Review
  14. Review
  15. Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

2 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

4 authors at 1 institution in 1 country.

Patricia S DoyleDepartment of Pathology, University of California San Francisco, CA 94121, USA. patricia.doyle-engel@ucsf.edu
Yuan M Zhou
Juan C Engel
James H McKerrow
University of California, San Francisco · US

Funding

X-RAY CRYSTALLOGRAPHYP01AI035707 · NIAID · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI MCKERROW, JAMES H. · 1995 to 2008
$7.8M
NIAID NIH HHS AI 35707NIAID NIH HHS P01 AI035707
6 · The paper itself

Abstract

Chagas' disease, caused by the parasite Trypanosoma cruzi, remains the leading cause of cardiopathy in Latin America with about 12 million people infected. Classic clinical manifestations derive from infection of muscle cells leading to progressive cardiomyopathy, while some patients develop megacolon or megaesophagus. A very aggressive clinical course including fulminant meningoencephalitis has been reported in patients who contract Chagas' disease in the background of immunodeficiency. This includes patients with human immunodeficiency virus infection as well as patients receiving immunosuppressive therapy for organ transplant. Currently, only two drugs are approved for the treatment of Chagas' disease, nifurtimox and benznidazole. Both have significant limitations due to common and serious side effects as well as limited availability. A promising group of new drug leads for Chagas' disease is cysteine protease inhibitors targeting cruzain, the major protease of T. cruzi. The inhibitor N-methyl-Pip-F-homoF-vinyl sulfonyl phenyl (N-methyl-Pip-F-hF-VS phi) is in late-stage preclinical development. Therefore, the question arose as to whether protease inhibitors targeting cruzain would have efficacy in Chagas' disease occurring in the background of immunodeficiency. To address this question, we studied the course of infection in recombinase-deficient (Rag1(-/-)) and normal mice infected with T. cruzi. Infections localized to heart and skeletal muscle in untreated normal animals, while untreated Rag1(-/-) mice showed severe infection in all organs and predominantly in liver and spleen. Treatment with the dipeptide N-methyl-Pip-F-hF-VS phi rescued immunodeficient animals from lethal Chagas' infection. The majority (60 to 100%) of inhibitor-treated Rag1(-/-) mice had increased survival, negative PCR, and normal tissues by histopathological examination.

Indexed as

AnimalsCattleCells, CulturedChagas DiseaseCysteine EndopeptidasesCysteine Proteinase InhibitorsDisease Models, AnimalFemaleHomeodomain ProteinsHumansMiceMice, Inbred C3HMice, Inbred C57BLMice, KnockoutNifurtimoxNitroimidazolesbenzonidazolecruzain, Trypanosoma cruziCysteine EndopeptidasesCysteine Proteinase InhibitorsHomeodomain ProteinsNifurtimoxNitroimidazolesProtozoan ProteinsRAG-1 proteinTrypanocidal Agents

Identifiers

PMID17698625
PMCPMC2151429
OpenAlexW2115123186

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.