alexa Measurement and pharmacokinetic analysis of buspirone by means of brain microdialysis coupled to high-performance liquid chromatography with electrochemical detection.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Tsai TH, Chen CF

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Abstract The feasibility of an electrochemical detection system with on-line microdialysis coupled with sensitive microbore high-performance liquid chromatography for the measurement and brain pharmacokinetic analysis of buspirone was investigated. A microdialysis probe was inserted into the right striatum of male Sprague-Dawley rats, which had been administered buspirone 10 mg/kg. i.v.). Dialysates were automatically injected through an on-line injector into a cyano microbore column coupled to an electrochemical detector. Samples were eluted with a mobile phase containing 0.1 M monosodium dihydrogenphosphate acetonitrile-diethylamine (85:15:0.1, v/v/v). pH 3.0, adjusted with orthophosphoric acids at a flow-rate of 0.06 ml/min. A biphasic phenomenon with a rapid distribution phase followed by a slower elimination phase was observed from the brain buspirone concentration-time curve. The results indicate that the brain pharmacokinetics of buspirone appear to conform to a two-compartment model.
This article was published in J Chromatogr A and referenced in Pharmaceutica Analytica Acta

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