Evidence map›Paper›PMID 12821456›Full record

ArticleAntimicrobial agents and chemotherapy2003

Pharmacokinetics-pharmacodynamics of rifampin in an aerosol infection model of tuberculosis.

Ramesh Jayaram, Sheshagiri Gaonkar, Parvinder Kaur, B L Suresh, B N Mahesh, R Jayashree, Vrinda Nandi, Sowmya Bharat, R K Shandil, E Kantharaj and 1 more

Registry-linked trialAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00760149 (Pharmacokinetics and Pharmacodynamics of High Versus Standard Dose Rifampicin in Patients With Pulmonary Tuberculosis in the Kilimanjaro Region, Tanzania.), which is not on this map. Cited by 173 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
173citing papers in PubMed, 4 pooled it
–field-weighted citation impact
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.

NCT00760149 phase2completednot on this mapstarted 2010, after this paper: background citation

Pharmacokinetics and Pharmacodynamics of High Versus Standard Dose Rifampicin in Patients With Pulmonary Tuberculosis in the Kilimanjaro Region, Tanzania.

TypeinterventionalSponsorRadboud University Medical CenterRan2010 to 2013Enrolled150ConditionsTuberculosisArmsRifampicin in higher doses
3 · Its place in the literature

Who cites it

173 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Model-Based Meta-analysis of Rifampicin Exposure and Mortality in Indonesian Tuberculous Meningitis Trials.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2020
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  7. Efficacy and Safety of High-Dose Rifampin in Pulmonary Tuberculosis. A Randomized Controlled Trial.American journal of respiratory and critical care medicine · 2018
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  13. Two-stage activity-safety study of daily rifapentine during intensive phase treatment of pulmonary tuberculosis.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2015
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  14. Daily rifapentine for treatment of pulmonary tuberculosis. A randomized, dose-ranging trial.American journal of respiratory and critical care medicine · 2015
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113 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

11 authors.

Ramesh JayaramAstraZeneca India Pvt Ltd, Malleswaram, Bangalore 560003, India.
Sheshagiri Gaonkar
Parvinder Kaur
B L Suresh
B N Mahesh
R Jayashree
Vrinda Nandi
Sowmya Bharat
R K Shandil
E Kantharaj
V Balasubramanian

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Limited information exists on the pharmacokinetic (PK)-pharmacodynamic (PD) relationships of drugs against Mycobacterium tuberculosis. Our aim was to identify the PK-PD parameter that best describes the efficacy of rifampin on the basis of in vitro and PK properties. Consistent with 83.8% protein binding by equilibrium dialysis, the rifampin MIC for M. tuberculosis strain H37Rv rose from 0.1 in a serum-free system to 1.0 mg/ml when it was tested in the presence of 50% serum. In time-kill studies, rifampin exhibited area under the concentration-time curve (AUC)-dependent killing in vitro, with maximal killing seen on all days and with the potency increasing steadily over a 9-day exposure period. MIC and time-kill studies performed with intracellular organisms in a macrophage monolayer model yielded similar results. By use of a murine aerosol infection model with dose ranging and dose fractionation over 6 days, the PD parameter that best correlated with a reduction in bacterial counts was found to be AUC/MIC (r(2) = 0.95), whereas the maximum concentration in serum/MIC (r(2) = 0.86) and the time that the concentration remained above the MIC (r(2) = 0.44) showed lesser degrees of correlation.

Indexed as

AerosolsAnimalsAntibiotics, AntitubercularCell LineDisease Models, AnimalDose-Response Relationship, DrugFemaleIn Vitro TechniquesMacrophagesMaleMiceMice, Inbred BALB CMicrobial Sensitivity TestsMycobacterium tuberculosisRifampinTuberculosis, PulmonaryAerosolsAntibiotics, AntitubercularRifampin

Identifiers

PMID12821456
PMCPMC161844

What OpenQuestion holds

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Read underepoch 390

Registered trials

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.