Evidence map›Paper›PMID 28785981›Full record

ArticleClinical pharmacokinetics2018

Higher Midazolam Clearance in Obese Adolescents Compared with Morbidly Obese Adults.

Anne van Rongen, Margreke J E Brill, Janelle D Vaughns, Pyry A J Välitalo, Eric P A van Dongen, Bert van Ramshorst, Jeffrey S Barrett, Johannes N van den Anker, Catherijne A J Knibbe

Abstract read
In one paragraph

Article in Clinical pharmacokinetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 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.

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

15 citing papers in PubMed, 1 synthesis or guideline pooled it.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors.

Anne van RongenDepartment of Clinical Pharmacy, St. Antonius Hospital, Koekoekslaan 1, 3435 CM, Nieuwegein, The Netherlands.ORCID http://orcid.org/0000-0003-1023-7514
Margreke J E BrillDepartment of Clinical Pharmacy, St. Antonius Hospital, Koekoekslaan 1, 3435 CM, Nieuwegein, The Netherlands.
Janelle D VaughnsDivision of Anesthesiology and Pain Medicine, Children's National Health System, Washington, DC, USA.
Pyry A J VälitaloDivision of Pharmacology, Leiden Academic Centre for Drug Research, Leiden University, Leiden, The Netherlands.
Eric P A van DongenDepartment of Anesthesiology and Intensive Care, St. Antonius Hospital, Nieuwegein, The Netherlands.
Bert van RamshorstDepartment of Surgery, St. Antonius Hospital, Nieuwegein, The Netherlands.
Jeffrey S BarrettLaboratory for Applied PK/PD, Children's Hospital of Philadelphia, Philadelphia, USA.
Johannes N van den AnkerDivision of Clinical Pharmacology, Children's National Health System, Washington, DC, USA.
Catherijne A J KnibbeDepartment of Clinical Pharmacy, St. Antonius Hospital, Koekoekslaan 1, 3435 CM, Nieuwegein, The Netherlands. c.knibbe@antoniusziekenhuis.nl.

Funding

Postdoctoral training in Pediatric Clinical PharmacologyT32HD087969 · NICHD · CHILDREN'S RESEARCH INSTITUTE · PI VAN DEN ANKER, JOHANNES NICOLAAS · 2016 to 2020
$998k
NICHD NIH HHS T32 HD087969
6 · The paper itself

Abstract

backgroundThe clearance of cytochrome P450 (CYP) 3A substrates is reported to be reduced with lower age, inflammation and obesity. As it is unknown what the overall influence is of these factors in the case of obese adolescents vs. morbidly obese adults, we studied covariates influencing the clearance of the CYP3A substrate midazolam in a combined analysis of data from obese adolescents and morbidly obese adults.

methodsData from 19 obese adolescents [102.7 kg (62-149.5 kg)] and 20 morbidly obese adults [144 kg (112-186 kg)] receiving intravenous midazolam were analysed, using population pharmacokinetic modelling (NONMEM 7.2). In the covariate analysis, the influence of study group, age, total body weight (TBW), developmental weight (WT

resultsThe population mean midazolam clearance was significantly higher in obese adolescents than in morbidly obese adults [0.71 (7%) vs. 0.44 (11%) L/min; p < 0.01]. Moreover, clearance in obese adolescents increased with TBW (p < 0.01), which seemed mainly explained by WT DISCUSSION: We hypothesise that higher midazolam clearance in obese adolescents is explained by less obesity-induced suppression of CYP3A activity, while the increase with WT

Indexed as

Models, BiologicalAdministration, IntravenousAdolescentAdultChildCytochrome P-450 CYP3AFemaleHumansHypnotics and SedativesLiverMaleMidazolamMiddle AgedObesityCYP3A protein, humanCytochrome P-450 CYP3AHypnotics and SedativesMidazolam

Identifiers

PMID28785981
PMCPMC5904241

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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.