Evidence map›Paper›PMID 19748318›Full record

ArticleTuberculosis (Edinburgh, Scotland)2009

A simple in vitro PK/PD model system to determine time-kill curves of drugs against Mycobacteria.

Nageshwar R Budha, Robin B Lee, Julian G Hurdle, Richard E Lee, Bernd Meibohm

Abstract read
In one paragraph

Article in Tuberculosis (Edinburgh, Scotland), 2009. 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
1.6field-weighted citation impact, top 17% 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, 37 citations in OpenAlex.

  1. DynamicAntibiotics (Basel, Switzerland) · 2024
    Review
  2. Article
  3. Article
  4. A cell culture system to model pharmacokinetics using adjustable-volume perfused mixing chambers.Toxicology in vitro : an international journal published in association with BIBRA · 2023
    Article
  5. Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Dynamic time-kill curve characterization of spectinamide antibiotics 1445 and 1599 for the treatment of tuberculosis.European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences · 2019
    Article
  12. Article
  13. Article
  14. A multi-scale approach to designing therapeutics for tuberculosis.Integrative biology : quantitative biosciences from nano to macro · 2015
    Article
  15. Article
  16. Article
  17. PK/PD models in antibacterial development.Current opinion in microbiology · 2013
    Review
  18. Review
  19. Review
  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.

Nageshwar R BudhaDepartment of Pharmaceutical Sciences, College of Pharmacy, The University of Tennessee Health Science Center, 874 Union Avenue, Suite 5p, Memphis, TN 38163, USA.
Robin B Lee
Julian G Hurdle
Richard E Lee
Bernd Meibohm
University of Tennessee Health Science Center · US

Funding

Inhibitors of latent M. tuberculosisR01AI062415 · NIAID · UNIVERSITY OF TENNESSEE HEALTH SCI CTR · PI LEE, RICHARD E. · 2004 to 2012
$4.1M
NIAID NIH HHS R01 AI 062415NIAID NIH HHS R01 AI062415
6 · The paper itself

Abstract

In vivo tuberculosis is exposed to continually changing drug concentrations for which static minimum inhibitory concentration (MIC) testing may be a poor surrogate. While in vitro approaches to determine time-kill curves for antibiotics have been widely applied in assessing antimicrobial activity against fast growing microorganisms, their availability and application for slow-growing microorganisms including Mycobacterium tuberculosis has so far been scarce. Thus, we developed a novel simple in vitro pharmacokinetic/pharmacodynamic (PK/PD) model for establishing time-kill curves and applied it for evaluating the antimicrobial activity of different dosing regimens of isoniazid (INH) against Mycobacterium bovis BCG as a surrogate for virulent M. tuberculosis. In the in vitro model M. bovis BCG was exposed to INH concentration-time profiles as usually encountered during multiple dose therapy with 25, 100 and 300mg/day in humans who are fast or slow INH metabolizers. Bacterial killing was followed over time by determining viable counts and the resulting time-kill data was analyzed using a semi-mechanistic PK/PD model with an adaptive IC(50) function to describe the emergence of insensitive populations of bacteria over the course of treatment. In agreement with previous studies, the time-kill data suggest that AUC(0-24)/MIC is the PK/PD index that is the most explanatory of the antimicrobial effect of INH. The presented in vitro PK/PD model and associated modeling approach were able to characterize the time-kill kinetics of INH in M. bovis BCG, and may in general serve as a potentially valuable, low cost tool for the assessment of antibacterial activity in slow-growing organisms in drug development and applied pharmacotherapy.

Indexed as

Anti-Bacterial AgentsBacterial ProteinsDose-Response Relationship, DrugDrug Resistance, BacterialHumansIsoniazidModels, BiologicalMycobacterium bovisTime FactorsTuberculosisAnti-Bacterial AgentsBacterial ProteinsIsoniazid

Identifiers

PMID19748318
PMCPMC2783979
OpenAlexW2024427959

What OpenQuestion holds

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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.