LC-MS/MS analysis of pramipexole in mouse plasma and tissues: elimination of lipid matrix effects using weak cation exchange mode based solid-phase extraction

Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
Weilin GuoJiangeng Huang

Abstract

Intranasal delivery is emerging as a promising alternative for oral or intravenous administration of central nervous system (CNS) drugs, such as pramipexole which is widely used for the treatment of Parkinson's disease. To evaluate the effectiveness of intranasal delivery of pramipexole, preclinical pharmacokinetic and tissue distribution studies following intranasal administration need to be investigated. In this paper, we developed and validated a robust and sensitive LC-MS/MS assay without matrix effect for accurate measurements of pramipexole in mouse plasma and tissue samples. Pramipexole and its stable isotope labeled internal standard (d3-pramipexole) were extracted from biological samples by protein precipitation (PPT) coupled with solid phase extraction (SPE) using weak cation exchange SPE cartridges. Matrix effects were studied using post-column infusion and post-extraction addition experiments by direct monitoring of typical phospholipids including glycerophosphocholines (GPChos) and lysoglycerophosphocholines (Lyso-GPChos). Chromatographic separation was achieved on a Welch Ultimate(®) XB-CN column using isocratic elution with a run time of 3.0 min. The assay was linear in the concentration range of 0.05-100 ng/mL a...Continue Reading

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Nov 17, 2017·Biomedical Chromatography : BMC·Andrei MedvedoviciVictor David
Jan 30, 2020·Biomedical Chromatography : BMC·Zhendong ChenDafang Zhong

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