Evidence map›Paper›PMID 24089407›Full record

ArticleScience translational medicine2013

Model system to define pharmacokinetic requirements for antimalarial drug efficacy.

Rahul P Bakshi, Elizabeth Nenortas, Abhai K Tripathi, David J Sullivan, Theresa A Shapiro

Abstract read
In one paragraph

Article in Science translational medicine, 2013. 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
3.9field-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, 36 citations in OpenAlex.

  1. Trial
  2. Article
  3. RNA Polymerase 1 inhibitors against African trypanosomesAntimicrobial agents and chemotherapy · 2026
    Article
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  6. Article
  7. Review
  8. Article
  9. Article
  10. Review
  11. Article
  12. Article
  13. Kinetic Driver of Antibacterial Drugs againstAntimicrobial agents and chemotherapy · 2019
    Article
  14. Optimal kinetic exposures for classic and candidate antitrypanosomals.The Journal of antimicrobial chemotherapy · 2019
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

5 authors at 1 institution in 1 country.

Rahul P BakshiDivision of Clinical Pharmacology, Department of Medicine, Johns Hopkins University, 725 North Wolfe Street, Baltimore, MD 21205, USA.
Elizabeth Nenortas
Abhai K Tripathi
David J Sullivan
Theresa A Shapiro
Johns Hopkins University · US

Funding

Institute for Clinical and Translational Research (UL1)UL1RR025005 · NCRR · JOHNS HOPKINS UNIVERSITY · PI FORD, DANIEL ERNEST · 2007 to 2011
$75.8M
Essential PK/PD relationships of antimalarial drugsR01AI095453 · NIAID · JOHNS HOPKINS UNIVERSITY · PI SHAPIRO, THERESA A · 2012 to 2024
$4.8M
Influence of Iron on Murine MalariaU01HD061241 · NICHD · JOHNS HOPKINS UNIVERSITY · PI SULLIVAN, DAVID JOSEPH · 2009 to 2012
$786k
NCRR NIH HHS UL1 RR 02500NCRR NIH HHS UL1 RR025005NIAID NIH HHS R01 AI095453NIAID NIH HHS R01AI095453NICHD NIH HHS U01 HD061241NICHD NIH HHS U01HD061241
6 · The paper itself

Abstract

Malaria presents a tremendous public health burden, and new therapies are needed. Massive compound libraries screened against Plasmodium falciparum have yielded thousands of lead compounds, resulting in an acute need for rational criteria to select the best candidates for development. We reasoned that, akin to antibacterials, antimalarials might have an essential pharmacokinetic requirement for efficacy: action governed either by total exposure or peak concentration (AUC/CMAX), or by duration above a defined minimum concentration [time above minimum inhibitory concentration (TMIC)]. We devised an in vitro system for P. falciparum, capable of mimicking the dynamic fluctuations of a drug in vivo. Using this apparatus, we find that chloroquine is TMIC-dependent, whereas the efficacy of artemisinin is driven by CMAX. The latter was confirmed in a mouse model of malaria. These characteristics can explain the clinical success of two antimalarial drugs with widely different kinetics in humans. Chloroquine, which persists for weeks, is ideally suited for its TMIC mechanism, whereas great efficacy despite short exposure (t1/2 in blood 3 hours or less) is attained by CMAX-driven artemisinins. This validated preclinical model system can be used to select those antimalarial lead compounds whose CMAX or TMIC requirement for efficacy matches pharmacokinetics obtained in vivo. The apparatus can also be used to explore the kinetic dependence of other pharmacodynamic endpoints in parasites.

Indexed as

Models, BiologicalAnimalsAntimalarialsArtemisininsChloroquineDisease Models, AnimalHumansMalaria, FalciparumMiceMice, Inbred C57BLParasitic Sensitivity TestsPlasmodium bergheiPlasmodium falciparumReproducibility of ResultsTreatment OutcomeAntimalarialsartemisininArtemisininsChloroquine

Identifiers

PMID24089407
PMCPMC3845824
OpenAlexW2117175172

What OpenQuestion holds

Textmetadata
LicenceTDM
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.