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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Qiu, Xuewen Dai, Qing Sun, Fengjun Liu, Yao Yang, Bo Xiang, Rongfeng Yu, Mingjie Xiong, Lirong Bi, Shanshan Lu, Wei Chen, Yongchuan Xia, Peiyuan |
| Spatial Coverage | China |
| Abstract | To develop a population-based pharmacokinetic model for the oral antiepileptic drug zonisamide using a cohort of healthy (nonepileptic) subjects and evaluate the effect of individual factors on the pharmacokinetics of zonisamide. 30 young adults (21-39 years) in good health were randomly assigned to 3 equal groups (1:1 sex ratio) for single-dose administration of zonisamide at 200 mg, 300 mg, or 400 mg. An additional 9 subjects (22-24 years) were administered once daily zonisamide at 300 mg for 14 days, and comprised the multiple dosing group. Venous blood samples were collected for analysis prior to (baseline, 0 hours) and after (1-300 hours) drug administration, providing 607 total samples used to build the pharmacokinetic model. The population pharmacokinetic analysis was performed by ICON's nonlinear mixed-effect modeling (NONMEM) software. Validation of the final model was carried out by nonparametric bootstrapping and visual predictive check. The zonisamide pharmacokinetics was best described by a two-compartment model with first-order elimination. In the final model, the estimated value of clearance (CL) was 23.25 L/h, the volume of distribution of the central compartment (Vc) was 34.50 L, the intercompartmental clearance (Q) was 20.22 L/h, and the Ka was 0.026 h(-1). The peripheral volume of distribution (Vp) was 1,429 L for single dose and 1,003 L for multiple doses. Body weight was the significant covariate affecting CL, Vc, Vp, and Q. Otherwise, female subjects had a lower Q than male subjects. The pharmacokinetics of zonisamide after oral administration could be described using a linear first-order elimination two-compartment model, which may provide a reference for clinical use of zonisamide in Chinese adults. |
| File Format | HTM / HTML |
| ISSN | 09461965 |
| Issue Number | 5 |
| Volume Number | 54 |
| Journal | Int. Journal of Clinical Pharmacology and Therapeutics |
| Language | English |
| Publisher | Dustri-Verlag |
| Publisher Date | 2016-05-01 |
| Publisher Place | Germany |
| Access Restriction | Subscribed |
| Subject Keyword | Discipline Pharmacology Anticonvulsants Administration & Dosage Pharmacokinetics Asian Continental Ancestry Group Isoxazoles Models, Biological Administration, Oral Adult China Drug Administration Schedule Female Healthy Volunteers Humans Linear Models Male Nonlinear Dynamics Young Adult Journal Article Randomized Controlled Trial Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pharmacology Pharmacology (medical) |
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