INVESTIGADORES
LANUSSE Carlos Edmundo
artículos
Título:
Plasma and Ocular Prednisolone Disposition after Oral Treatment in Cats
Autor/es:
DEL SOLE, M J; SCHAIQUEVICH, P; ABA, M; LANUSSE, C; MORENO, L
Revista:
JOURNAL OF BIOMEDICINE AND BIOTECHNOLOGY
Editorial:
HINDAWI PUBLISHING CORPORATION
Referencias:
Lugar: New York; Año: 2013 p. 1 - 6
ISSN:
1110-7243
Resumen:
Objective. To evaluate the plasma and aqueous humor disposition of prednisolone after oral administration in cats. Methods. Six cats were administered with a single oral dose of prednisolone (10mg). Blood and aqueous humor samples were serially collected after drug administration. Prednisolone concentrations in plasma and aqueous humor were measured at 0.25, 0.5, 1.0, 1.5, 2.0, 3.0, 4.0, and 5.0 h after administration by a high-performance liquid chromatographic analytical method developed and validated for this purpose. Results. Mean ± standard error (SE) of maximum plasma prednisolone concentration (300.8 ± 67.3 ng/mL) was reached at 1 h after administration. Prednisolone was distributed to the aqueous humor reaching a mean peak concentration of 100.9 ± 25.5 ng/mL at 1.25 h after administration.Themean ± SE systemic and aqueous humor exposure (AUC) was 553.3 ± 120.0 ng∗h/mL and 378.8 ± 64.9 ng∗h/mL, respectively. A high AUCaqueous humor/AUCplasma ratio was observed (0.68 ± 0.13).Themean half-life time of elimination in plasma and aqueous humor was 0.87 ± 0.16 h and 2.25 ± 0.44 h, respectively. Clinical Significance. The observed high ratio between aqueous humor and plasma prednisolone concentrations indicates that extensive penetration of prednisolone to the anterior segment of the eye may occur. This is the first step that contributes to the optimization of the pharmacological therapeutics for the clinical treatment of uveitis.