HPLC method for assessment of in vitro and in vivo recovery of gatifloxacin using microdialysis

 

Autores
Tasso, Leandro; Bettoni, Clarissa C.; Dalla Costa, Teresa
Tipo de recurso
artículo
Estado
Versión publicada
Año de publicación
2011
País
Argentina
Institución
Universidad Nacional de La Plata
Repositorio
SEDICI (UNLP)
Descripción
A simple and sensitive HPLC method was validated for assessment of in vitro and in vivo recovery of gatifloxacin using microdialysis. The validation parameters of linearity, precision, accuracy and limit of detection were studied as well as stability. Correlation coefficient (r2) obtained was > 0.999 for all calibration curves (20-600 ng.mL-1). Intra- and inter-day precision, expressed as the relative standard deviation (RSD) were less than 1.59 % and 1.33 %, respectively. Acceptable accuracy was achieved for all concentrations (99.17-101.35 %). The limit of quantification of the method was 20 ng.mL-1. The method showed the stability of gatifloxacin when submitted to different conditions. The validated method was applied to study calibration of microdialysis probes. The probe recovery was determined by no net flux experiment in vitro and in vivo. The in vitro and in vivo recovery for gatifloxacin was 30.9 ± 2.9 % and 28.9 ± 0.8 %, respectively. No differences were found between the two approaches. The HPLC method offers advantages because it has no extra sample handling steps; it is sensitive and can be used to determine free concentrations of gatifloxacin in tissues.
Idioma
inglés
OAI Identifier
oai:sedici.unlp.edu.ar:10915/8164
Enlace del recurso
http://sedici.unlp.edu.ar/handle/10915/8164
http://hdl.handle.net/10915/8164
http://www.latamjpharm.org/resumenes/30/3/LAJOP_30_3_1_8.pdf
Nivel de acceso
Acceso abierto
Materia
Farmacia
Técnicas de Química Analítica
gatifloxacin; high performance liquid chromatography; microdialysis; no net flux; probe recovery