Evidence map›Paper›PMID 25348537›Full record

ArticleAntimicrobial agents and chemotherapy2015

Antimalarial action of artesunate involves DNA damage mediated by reactive oxygen species.

Anusha M Gopalakrishnan, Nirbhay Kumar

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 83 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
83citing papers in PubMed, 1 pooled it
5.8field-weighted citation impact, top 4% 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

83 citing papers in PubMed, 1 synthesis or guideline pooled it, 169 citations in OpenAlex.

  1. Pooled it
  2. Pharmacokinetics andAntimicrobial agents and chemotherapy · 2020
    Trial
  3. Article
  4. Article
  5. Enhanced Antibacterial Activity ofJournal of functional biomaterials · 2026
    Article
  6. Review
  7. Review
  8. Article
  9. Antimalarial Potency ofJournal of tropical medicine · 2026
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Enhanced Antimalarial Efficacy ofAdvances in pharmacological and pharmaceutical sciences · 2025
    Article
  17. Article
  18. Article
  19. Review
  20. Article

23 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

2 authors at 1 institution in 1 country.

Anusha M GopalakrishnanDepartment of Tropical Medicine and Vector-Borne Infectious Diseases Research Center, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA.
Nirbhay KumarDepartment of Tropical Medicine and Vector-Borne Infectious Diseases Research Center, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana, USA nkumar@tulane.edu.
Tulane University · US

Funding

UNCOVERING THE MECHANISMS OF OSTEOSARCOMA METASTASIS SUPPRESSION BY MTBPP20RR020152 · NCRR · TULANE UNIVERSITY OF LOUISIANA · PI DEININGER, PRESCOTT L. · 2004 to 2011
$17.0M
Mentoring a Cancer Genetics ProgramP20GM103518 · NIGMS · TULANE UNIVERSITY OF LOUISIANA · PI DEININGER, PRESCOTT L. · 2012 to 2013
$4.3M
Plasmodium Recombination of MachineryR56AI068052 · NIAID · JOHNS HOPKINS UNIVERSITY · PI KUMAR, NIRBHAY · 2008 to 2009
$810k
NCRR NIH HHS 5P20RR020152-09NCRR NIH HHS P20 RR020152NIAID NIH HHS R56 AI068052NIAID NIH HHS R56 AI68052NIGMS NIH HHS 8 P20 GM103518-09NIGMS NIH HHS P20 GM103518
6 · The paper itself

Abstract

Artemisinin-based combination therapy (ACT) is the recommended first-line treatment for Plasmodium falciparum malaria. It has been suggested that the cytotoxic effect of artemisinin is mediated by free radicals followed by the alkylation of P. falciparum proteins. The endoperoxide bridge, the active moiety of artemisinin derivatives, is cleaved in the presence of ferrous iron, generating reactive oxygen species (ROS) and other free radicals. However, the emergence of resistance to artemisinin in P. falciparum underscores the need for new insights into the molecular mechanisms of antimalarial activity of artemisinin. Here we show that artesunate (ART) induces DNA double-strand breaks in P. falciparum in a physiologically relevant dose- and time-dependent manner. DNA damage induced by ART was accompanied by an increase in the intracellular ROS level in the parasites. Mannitol, a ROS scavenger, reversed the cytotoxic effect of ART and reduced DNA damage, and modulation of glutathione (GSH) levels was found to impact ROS and DNA damage induced by ART. Accumulation of ROS, increased DNA damage, and the resulting antiparasite effect suggest a causal relationship between ROS, DNA damage, and parasite death. Finally, we also show that ART-induced ROS production involves a potential role for NADPH oxidase, an enzyme involved in the production of superoxide anions. Our results with P. falciparum provide novel insights into previously unknown molecular mechanisms underlying the antimalarial activity of artemisinin derivatives and may help in the design of next-generation antimalarial drugs against the most virulent Plasmodium species.

Indexed as

AntimalarialsArtemisininsArtesunateDNA Breaks, Double-StrandedDNA DamageGlutathioneKineticsPlasmodium falciparumReactive Oxygen SpeciesAntimalarialsArtemisininsArtesunateGlutathioneReactive Oxygen Species

Identifiers

PMID25348537
PMCPMC4291367
OpenAlexW2169242620

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.