Evidence map›Paper›PMID 28607022›Full record

ArticleAntimicrobial agents and chemotherapy2017

Pharmacokinetics of Pyrazinamide and Optimal Dosing Regimens for Drug-Sensitive and -Resistant Tuberculosis.

Maxwell T Chirehwa, Helen McIlleron, Roxana Rustomjee, Thuli Mthiyane, Philip Onyebujoh, Peter Smith, Paolo Denti

Open access · bronzeAbstract read
In one paragraph

Article in Antimicrobial agents and chemotherapy, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.9field-weighted citation impact, top 9% 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

30 citing papers in PubMed, 40 citations in OpenAlex.

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  4. Quality assurance of rifampicin-containing fixed-drug combinations in South Africa: dosing implications.The international journal of tuberculosis and lung disease : the official journal of the International Union against Tuberculosis and Lung Disease · 2018
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  10. A Balancing Act: Finding the Right Dose of Pyrazinamide to Treat Tuberculosis.American journal of respiratory and critical care medicine · 2024
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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

7 authors at 3 institutions in 2 countries.

Maxwell T ChirehwaDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.
Helen McIlleronDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.
Roxana RustomjeeStrategic Health Innovation Partnerships (SHIP), South African Medical Research Council, Cape Town, South Africa.
Thuli MthiyaneTB Research Unit, Clinical and Biomedical, South African Medical Research Council, Durban, South Africa.
Philip OnyebujohIntercountry Support Team for East and Southern Africa, World Health Organization, Regional Office for Africa, Harare, Zimbabwe.
Peter SmithDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa.
Paolo DentiDivision of Clinical Pharmacology, Department of Medicine, University of Cape Town, Cape Town, South Africa paolo.denti@uct.ac.za.
University of Cape Town · ZASouth African Medical Research Council · ZAWorld Health Organization - Zimbabwe · ZW

Funding

World Health Organization 001
6 · The paper itself

Abstract

Pyrazinamide is used in the treatment of tuberculosis (TB) because its sterilizing effect against tubercle bacilli allows the shortening of treatment. It is part of standard treatment for drug-susceptible and drug-resistant TB, and it is being considered as a companion drug in novel regimens. The aim of this analysis was to characterize factors contributing to the variability in exposure and to evaluate drug exposures using alternative doses, thus providing evidence to support revised dosing recommendations for drug-susceptible and multidrug-resistant tuberculosis (MDR-TB). Pyrazinamide pharmacokinetic (PK) data from 61 HIV/TB-coinfected patients in South Africa were used in the analysis. The patients were administered weight-adjusted doses of pyrazinamide, rifampin, isoniazid, and ethambutol in fixed-dose combination tablets according to WHO guidelines and underwent intensive PK sampling on days 1, 8, 15, and 29. The data were interpreted using nonlinear mixed-effects modeling. PK profiles were best described using a one-compartment model with first-order elimination. Allometric scaling was applied to disposition parameters using fat-free mass. Clearance increased by 14% from the 1st day to the 29th day of treatment. More than 50% of patients with weight less than 55 kg achieved lower pyrazinamide exposures at steady state than the targeted area under the concentration-time curve from 0 to 24 h of 363 mg · h/liter. Among patients with drug-susceptible TB, adding 400 mg to the dose for those weighing 30 to 54 kg improved exposure. Average pyrazinamide exposure in different weight bands among patients with MDR-TB could be matched by administering 1,500 mg, 1,750 mg, and 2,000 mg to patients in the 33- to 50-kg, 51- to 70-kg, and greater than 70-kg weight bands, respectively.

Indexed as

AdolescentAdultAntitubercular AgentsCoinfectionDrug CombinationsEthambutolHIV InfectionsHumansIsoniazidMaleMetabolic Clearance RateMiddle AgedPyrazinamideRifampinTuberculosis, Multidrug-ResistantTuberculosis, PulmonaryAntitubercular AgentsDrug CombinationsEthambutolIsoniazidPyrazinamideRifampinAUCfat-free massHIV/TB coinfectionNONMEMpopulation pharmacokineticsweight band dosing

Identifiers

PMID28607022
PMCPMC5527644
OpenAlexW2624688081

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.