ResumenEl Levetiracetam es un medicamento antiepiléptico derivado de la pirrolidona con un mecanismo de acción diferente a otros antiepilépticos, al unirse de forma específica a la proteína SV2A de la vesícula sináptica modulando su actividad. Diversos métodos han sido reportados para el análisis de Levetiracetam en variados fluidos biológicos, siendo la cromatografía líquida de alta precisión HPLC (de la sigla en inglés High Performance Liquid Chromatography) uno de los más utilizados. En este estudio se describe un método rápido y sencillo para la determinación de Levetiracetam en muestras de suero con extracción líquido-líquido, detección ultravioleta a 205 nm, fase móvil isocrática y Captopril como estándar interno, el rango de detección es entre 1 y 100 µg/ml con precisión y exactitud del 95% y un tiempo total de elución de 18 minutos por muestra. El método es lo suficientemente sensible, exacto, y reproductible para ser usado en estudios farmacocinéticos. Palabras clave. HPLC, Levetiracetam, antiepilepticos, farmacocinética LEVETIRACETAM DETERMINATION IN SERUM BY HPLC-UV AbstractLevetiracetam is an antiepileptic medicament derived from the pirrolidona, Its mechanism of action is different from other antiepileptic drugs, by binding specifically in the synaptic vesicle protein SV2A. Diversified methods have been brought to Levetiracetam analysis in varied biological fluids, being the High-Performance Liquid Chromatography (HPLC) one of the most used. In this study a method is described for rapid and simple Levetiracetam determination in serum samples with liquid -liquid extraction, ultraviolet detection to 205 nm, isocratic mobile phase and Captopril as internal standard. The method is linear over the studied range of 1 and 100 µg/ml, with 95% of precision and accuracy and total elution time to 18 min for a sample. This method is highly sensitive, exact and reproducible for be used in pharmacokinetic studies.
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