Lamotrigine in children and adolescents : The impact of age on its serum concentrations and on the extent of drug interactions
(2007) In European Journal of Clinical Pharmacology 63(7). p.687-692- Abstract
Objective: To investigate the impact of age and co-treatment with other drugs on the serum concentrations of lamotrigine in children and adolescents. Methods: A review of routine serum concentration measurements of lamotrigine performed in our laboratory yielded a total of 744 serum samples from 296 subjects (110 males, 186 females, age: 2-19 years) suitable for statistical analysis. The primary outcome variable was the dose-corrected lamotrigine serum concentration, expressed as the lamotrigine concentration/dose (C/D) ratio. A linear mixed model that allowed multiple observations from the same patient was used to identify and quantify the effect of factors influencing the lamotrigine C/D ratio. Results: According to the model, the... (More)
Objective: To investigate the impact of age and co-treatment with other drugs on the serum concentrations of lamotrigine in children and adolescents. Methods: A review of routine serum concentration measurements of lamotrigine performed in our laboratory yielded a total of 744 serum samples from 296 subjects (110 males, 186 females, age: 2-19 years) suitable for statistical analysis. The primary outcome variable was the dose-corrected lamotrigine serum concentration, expressed as the lamotrigine concentration/dose (C/D) ratio. A linear mixed model that allowed multiple observations from the same patient was used to identify and quantify the effect of factors influencing the lamotrigine C/D ratio. Results: According to the model, the lamotrigine C/D ratio decreases by 6% per year of age. Valproate and levetiracetam were found to raise the lamotrigine C/D ratio, whereas the following co-medications reduced it: carbamazepine, clobazam, fluoxetine, clonazepam and ethinyl estradiol. The effect of carbamazepine decreased with increasing age. No gender difference was detected. Conclusions: Age is an important factor with respect to the pharmacokinetics and the extent of drug interactions of lamotrigine in children and adolescents. In this population, older individuals will need higher doses than younger ones in order to achieve the same serum concentrations.
(Less)
- author
- Reimers, Arne LU ; Skogvoll, Eirik ; Sund, Janne Kutschera and Spigset, Olav
- publishing date
- 2007-07
- type
- Contribution to journal
- publication status
- published
- keywords
- Age, Children, Drug interactions, Lamotrigine, Serum concentration
- in
- European Journal of Clinical Pharmacology
- volume
- 63
- issue
- 7
- pages
- 687 - 692
- publisher
- Springer
- external identifiers
-
- pmid:17497143
- scopus:34250361918
- ISSN
- 0031-6970
- DOI
- 10.1007/s00228-007-0308-2
- language
- English
- LU publication?
- no
- id
- 74dc99a9-f357-4818-abf8-bdb24b625901
- date added to LUP
- 2024-08-31 14:55:16
- date last changed
- 2024-09-02 13:02:08
@article{74dc99a9-f357-4818-abf8-bdb24b625901,
abstract = {{<p>Objective: To investigate the impact of age and co-treatment with other drugs on the serum concentrations of lamotrigine in children and adolescents. Methods: A review of routine serum concentration measurements of lamotrigine performed in our laboratory yielded a total of 744 serum samples from 296 subjects (110 males, 186 females, age: 2-19 years) suitable for statistical analysis. The primary outcome variable was the dose-corrected lamotrigine serum concentration, expressed as the lamotrigine concentration/dose (C/D) ratio. A linear mixed model that allowed multiple observations from the same patient was used to identify and quantify the effect of factors influencing the lamotrigine C/D ratio. Results: According to the model, the lamotrigine C/D ratio decreases by 6% per year of age. Valproate and levetiracetam were found to raise the lamotrigine C/D ratio, whereas the following co-medications reduced it: carbamazepine, clobazam, fluoxetine, clonazepam and ethinyl estradiol. The effect of carbamazepine decreased with increasing age. No gender difference was detected. Conclusions: Age is an important factor with respect to the pharmacokinetics and the extent of drug interactions of lamotrigine in children and adolescents. In this population, older individuals will need higher doses than younger ones in order to achieve the same serum concentrations.</p>}},
author = {{Reimers, Arne and Skogvoll, Eirik and Sund, Janne Kutschera and Spigset, Olav}},
issn = {{0031-6970}},
keywords = {{Age; Children; Drug interactions; Lamotrigine; Serum concentration}},
language = {{eng}},
number = {{7}},
pages = {{687--692}},
publisher = {{Springer}},
series = {{European Journal of Clinical Pharmacology}},
title = {{Lamotrigine in children and adolescents : The impact of age on its serum concentrations and on the extent of drug interactions}},
url = {{http://dx.doi.org/10.1007/s00228-007-0308-2}},
doi = {{10.1007/s00228-007-0308-2}},
volume = {{63}},
year = {{2007}},
}