Abstract：
:Lamotrigine (LTG) is one of the most widely used antiepileptic drugs. Confusion still exists in the literature as to the relative influence of age, body weight, and concomitant drug therapy on LTG pharmacokinetics. So, the objective of this study is to evaluate the influence of patient-related factors and comedication on LTG apparent oral clearance (CL/F). A therapeutic drug-monitoring database was used to identify steady-state plasma LTG concentrations in 210 patients. LTG CL/F values were calculated for each patient according to the equation CL/F (L/h per kg) = LTG daily dose (mg/kg)/Css (steady state concentration) (mg/L) × 24 h. A linear-regression model was used to assess the influence of gender, dose, age, and body weight in LTG CL/F. The influence of comedication on LTG CL/F was investigated by applying the Bonferroni post-test. The lowest LTG CL/F was found in patients comedicated with valproate (VPA) (mean, 0.0183 L/h per kg), followed by patients receiving VPA + enzyme inducers (0.0271 L/h per kg), patients on LTG monotherapy (0.0298 L/h per kg) and patients comedicated with enzyme inducers (0.056 L/h per kg) LTG CL/F correlated significantly with LTG dose (P < 0.01), but showed no significant relationship with gender, weight, and age. LTG CL/F is influenced by the type of antiepileptic comedication. The correlation with dose may be a spurious finding related to the fact that physicians, in adjusting dosage according to clinical response, are more likely to use larger doses in patients with high clearance values.
journal_name
Clin Exp Pharmacol Physioljournal_title
Clinical and experimental pharmacology & physiologyauthors
Baldoni AO,Freitas-Lima P,de Santi Ferreira FI,Martinez EZ,Queiroz RH,Sakamoto AC,Alexandre V,Perucca E,Pereira LRdoi
10.1111/1440-1681.12584subject
Has Abstractpub_date
2016-07-01 00:00:00pages
685-9issue
7eissn
0305-1870issn
1440-1681journal_volume
43pub_type
杂志文章abstract：:1. We have reported previously that instant coffee contains ligands for opiate receptors with characteristics similar to those of opiate antagonists. 2. A concentrate of receptor-active ligands from instant coffee was prepared by serial treatments involving Amberlite XAD-2, flash chromatography and gel permeation chro...
journal_title：Clinical and experimental pharmacology & physiology
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doi：10.1111/j.1440-1681.1987.tb01869.x
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abstract：:1. The effects of isoprenaline on the pressure-flow relationships in the peripheral circulation were studied in five anaesthetized dogs during right heart bypass procedures. 2. Isoprenaline (1 mug/kg per min) produced a significant drop in arterial pressure and arterial resistance. 3. There was a significant decrease ...
journal_title：Clinical and experimental pharmacology & physiology
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doi：10.1111/j.1440-1681.1975.tb01833.x
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doi：10.1111/1440-1681.12891
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journal_title：Clinical and experimental pharmacology & physiology
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journal_title：Clinical and experimental pharmacology & physiology
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journal_title：Clinical and experimental pharmacology & physiology
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abstract：:1. The aim of the present study was to perform an in vivo estimation of the Michaelis-Menten constants of the major metabolic pathways of paracetamol (APAP). 2. A two-occasion, single-dose cross-over trial was performed using 60 and 90 mg/kg doses of APAP in healthy patients undergoing third molar dental extraction. P...
journal_title：Clinical and experimental pharmacology & physiology
pub_type： 杂志文章
doi：10.1111/j.1440-1681.2008.05029.x
更新日期：2009-01-01 00:00:00
