Evidence map›Paper›PMID 25963985›Full record

ArticleAntimicrobial agents and chemotherapy2015

N-acetyltransferase genotypes and the pharmacokinetics and tolerability of para-aminosalicylic acid in patients with drug-resistant pulmonary tuberculosis.

Sherwin K B Sy, Lizanne de Kock, Andreas H Diacon, Cedric J Werely, Huiming Xia, Bernd Rosenkranz, Lize van der Merwe, Peter R Donald

Abstract 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 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
–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.

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

16 citing papers in PubMed.

  1. Article
  2. New and Repurposed Drugs for the Treatment of Active Tuberculosis: An Update for Clinicians.Respiration; international review of thoracic diseases · 2023
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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

8 authors.

Sherwin K B SyDepartment of Pharmaceutics, College of Pharmacy, University of Florida, Gainesville, Florida, USA sherwin.kenneth.sy@gmail.com.
Lizanne de KockDivision of Clinical Pharmacology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Andreas H DiaconTask Applied Science, Bellville, Cape Town, South Africa Division of Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Cedric J WerelyMRC Centre for Tuberculosis Research, DST-NRF Centre of Excellence for Biomedical TB Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Huiming XiaDepartments of Ophthalmology and Neuroscience, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.
Bernd RosenkranzDivision of Clinical Pharmacology, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.
Lize van der MerweMRC Centre for Tuberculosis Research, DST-NRF Centre of Excellence for Biomedical TB Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa Department of Statistics, Faculty of Natural Sciences, University of the Western Cape, Cape Town, South Africa.
Peter R DonaldDepartment of Paediatrics and Child Health, Faculty of Medicine and Health Sciences, Stellenbosch University, Cape Town, South Africa.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The aim of this study was to examine the relationships between N-acetyltransferase genotypes, pharmacokinetics, and tolerability of granular slow-release para-aminosalicylic acid (GSR-PAS) in tuberculosis patients. The study was a randomized, two-period, open-label, crossover design wherein each patient received 4 g GSR-PAS twice daily or 8 g once daily alternately. The PAS concentration-time profiles were modeled by a one-compartment disposition model with three transit compartments in series to describe its absorption. Patients' NAT1 and NAT2 genotypes were determined by sequencing and restriction enzyme analysis, respectively. The number of daily vomits was modeled by a Poisson probability mass function. Comparisons of other tolerability measures by regimens, gender, and genotypes were evaluated by a linear mixed-effects model. The covariate effects associated with efavirenz, gender, and NAT1*3, NAT1*14, and NAT2*5 alleles corresponded to 25, 37, -17, -48, and -27% changes, respectively, in oral clearance of PAS. The NAT1*10 allele did not influence drug clearance. The time above the MIC of 1 mg/liter was significantly different between the two regimens but not influenced by the NAT1 or NAT2 genotypes. The occurrence and intensity of intolerance differed little between regimens. Four grams of GSR-PAS twice daily but not 8 g once daily ensured concentrations exceeding the MIC (1 mg/liter) throughout the dosing interval; PAS intolerance was not related to maximum PAS concentrations over the doses studied and was not more frequent after once-daily dosing. We confirm that the slow phenotype conferred by the NAT1*14 and NAT1*3 alleles resulted in higher PAS exposure but found no evidence of increased activity of the NAT1*10 allele.

Indexed as

AcetyltransferasesAdolescentAdultAllelesAminosalicylic AcidAntitubercular AgentsArylamine N-AcetyltransferaseBacterial LoadCross-Over StudiesDelayed-Action PreparationsDrug Resistance, BacterialFemaleGenotypeHumansIsoenzymesMaleAcetyltransferasesAminosalicylic AcidAntitubercular AgentsArylamine N-AcetyltransferaseDelayed-Action PreparationsIsoenzymesN-acetyltransferase 1NAT2 protein, human

Identifiers

PMID25963985
PMCPMC4468703

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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.