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LC-MS/MS Method for Quantification of Levetiracetam in Human Plasma and Its Application in Pharmacokinetic Study of Extended-Release Tablets at Fasted And Fed States / 中国药学杂志
Chinese Pharmaceutical Journal ; (24): 1633-1638, 2017.
Artículo en Chino | WPRIM | ID: wpr-858582
ABSTRACT

OBJECTIVE:

To establish an LC-MS/MS method for the determination of levetiracetam to investigate the pharmacokinetics of levetiracetam extended-release tablets at fasted and fed states.

METHODS:

The separation was achieved on a Waters Symmetry C18 column (3.9 mm×150 mm, 5 μm) with mobile phase consisting of acetonitrile-5 mmol·L-1 ammonium acetate and 0.3% formic acid aqueous solution (10/90, V/V). Two subjects were randomly assigned to receive single oral dose of levetiracetam extended-release tablets 1 000 mg after being fasted and fed by a randomized crossover design. The plasma concentrations of levetiracetam were measured by LC-MS/MS.

RESULTS:

The calibration curve of levetiracetam in human plasma was linear over the concentration rang of 0.100 0-80.00 μg·mL-1. Under fasted and fed conditions, the main pharmacokinetic parameters of levetiracetam were as followsρmax were 20.50 and 19.09 μg·mL-1, AUC0-48 h were 345.4 and 336.3 μg·h·mL-1, tmax were 4.5 and 7.0 h, respectively.

CONCLUSION:

The method is proved to be convenient, accurate and sensitive, and suitable for the pharmacokinetic study of 1 000 mg levetiracetam extended-release tablets in healthy Chinese volunteers after being fasted and fed. The result suggests that high fat and calories diet has effect on the pharmacokinetics of levetiracetam extended-release tablets, with tmax being delayed.

Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Tipo de estudio: Ensayo Clínico Controlado Idioma: Chino Revista: Chinese Pharmaceutical Journal Año: 2017 Tipo del documento: Artículo

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Texto completo: Disponible Índice: WPRIM (Pacífico Occidental) Tipo de estudio: Ensayo Clínico Controlado Idioma: Chino Revista: Chinese Pharmaceutical Journal Año: 2017 Tipo del documento: Artículo