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Molecules 2014, 19(3), 3120-3134;

Pharmacokinetic Study in Mice of Galphimine-A, an Anxiolytic Compound from Galphimia glauca

Centro de Investigación Biomédica del Sur, Instituto Mexicano del Seguro Social (IMSS), Argentina No. 1, Col. Centro, Xochitepec 62790, Morelos, Mexico
Doctorado en Ciencias Biológicas y de la Salud, División de Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana-Iztapalapa, San Rafael Actlixco No. 186, Col. Vicentina, Iztapalapa 09340, Mexico
Author to whom correspondence should be addressed.
Received: 28 January 2014 / Revised: 25 February 2014 / Accepted: 25 February 2014 / Published: 12 March 2014
(This article belongs to the Section Natural Products Chemistry)
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The aim of this study was to obtain pharmacokinetic data for the anxiolytic compound galphimine-A (G–A) from Galphimia glauca. G–A is the most abundant anxiolytic compound in this plant, while Galphimine-E (G–E) is the most abundant galphimine, but inactive. G–E was transformed chemically into G–A. The pharmacokinetic study was carried out in ICR mice, which were orally administered a single 200 mg/kg dose of G–A. Samples of blood and brain were taken at different times after administration of G–A. Previously, we established the validation of methods for determining the concentration of G–A. The G–A was detected in plasma 5 min after oral administration, and its concentration reached 2.47 μg/mL. Data from concentration-time curves allowed us to establish the main pharmacokinetic parameters in two models: one- and/or two-compartment. Cmax values were 3.33 and 3.42 μg/mL respectively, likewise AUC0→1440 min were 1,951.58 and 1,824.95 μg/mL·min. The G–A in brain tissue was noted to cross the blood-brain barrier, reaching Cmax 2.74 μg/mL, Tmax 81.6 min, and then drop gradually to 0.32 μg/mL detected at 24 h. The presence of G–A in brain tissue, confirmed that this anxiolytic compound can access the target organ and acts directly on the CNS. View Full-Text
Keywords: Galphimia glauca; pharmacokinetics; phytopharmaceutical; galphimine-A; anxiety Galphimia glauca; pharmacokinetics; phytopharmaceutical; galphimine-A; anxiety

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Vargas, R.A.; Zamilpa, A.; Aguilar, F.A.; Herrera-Ruiz, M.; Tortoriello, J.; Jiménez-Ferrer, E. Pharmacokinetic Study in Mice of Galphimine-A, an Anxiolytic Compound from Galphimia glauca. Molecules 2014, 19, 3120-3134.

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