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HPLC assay for determination of amphotericin B in biological samples
R Espada1, J M Josa, S Valdespina
1Department of Pharmacy and Pharmaceutical Technology, Faculty of Pharmacy, Complutense University, 28040 Madrid, Spain.
Abstract:
A fast and selective HPLC method for assaying amphotericin B in biological samples was developed and validated. The chromatographic separation was achieved in less than 12 min on a reverse-phase C(18) column using an acetonitrile-acetic acid-water (52:4.3:43.7, v/v/v) mixture as mobile phase. The flow rate was 1 mL/min and the effluent was monitored at 406 nm. A linear response over the concentration range 0.1-10.0 microg/mL was obtained. Intra-day and inter-day RSDs were below 5% for all the sample types. This new HPLC method was applied to assay amphotericin B in plasma and several tissue samples such as kidney, liver, spleen and bone marrow. Application of this method to pharmacokinetic studies in mice and dog is provided.
