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Formulation of amphotericin B as nanosuspension for oral administration
O Kayser1, C Olbrich, V Yardley
1Freie Universität Berlin, Institut für Pharmazie, Pharmazeutische Technologie, Biopharmazie und Biotechnologie, Kelchstrasse 31, D-12169 Berlin, Germany. kayser@zedat.fu-berlin.de
Abstract:
Amphotherin B was formulated in a nanosuspension as a new oral drug delivery system for the treatment of experimental visceral leishmaniasis. Amphotericin B (AmB) nanosuspensions were produced by high pressure homogenisation obtaining particles with a PCS diameter of 528 nm. Environmental stability was determined in artificial gastrointestinal fluids at different pH and electrolyte concentrations. In vivo efficacy was determined in a mouse model of visceral leishmaniasis. Following oral administration (5 mg kg(-1)), micronised amphotericin B did not show any curative effect. However, administrations of amphotericin B nanosuspension, reduced liver parasite load by 28.6% compared to untreated controls.
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