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An Economical and Versatile High-Throughput Protein Purification System Using a Multi-Column Plate Adapter

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Published on: May 21, 2021

Parallel electromembrane extraction in a multiwell plate.

Lars Erik Eng Eibak¹, Marthe Petrine Parmer, Knut Einar Rasmussen

¹School of Pharmacy, University of Oslo, P.O. Box 1068 Blindern, 0316, Oslo, Norway.

Analytical and Bioanalytical Chemistry

|September 27, 2013

Summary

This summary is machine-generated.

Parallel electromembrane extraction (Pa-EME) offers rapid, selective isolation of drugs from human plasma. This technique, combined with LC-MS/MS, enables efficient analysis of antidepressant compounds.

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Area of Science:

Analytical Chemistry
Biomedical Engineering

Background:

Traditional sample preparation methods can be time-consuming and labor-intensive.
Efficient extraction and cleanup are crucial for accurate analysis of complex biological matrices like human plasma.

Purpose of the Study:

To introduce and validate parallel electromembrane extraction (Pa-EME) using flat membranes in a multiwell format.
To demonstrate the simultaneous isolation, cleanup, and enrichment of multiple human plasma samples for LC-MS/MS analysis.

Main Methods:

Development of a novel Pa-EME setup utilizing a multiwell plate and flat polypropylene membranes.
Optimization of extraction parameters including time, voltage, agitation, sample volume, and acceptor volume using experimental design.
Analysis of extracted antidepressant drugs from human plasma using liquid chromatography-tandem mass spectrometry (LC-MS/MS).

Main Results:

Pa-EME achieved simultaneous extraction, cleanup, and enrichment of four antidepressant drugs from undiluted human plasma within 8 minutes.
Optimized conditions yielded high efficiency with an extraction voltage of 200 V and agitation rate of 1,040 rpm.
The combined Pa-EME and LC-MS/MS method achieved low quantitation limits, high linearity (R² > 0.9974), and low relative standard deviations (5-13%).

Conclusions:

Pa-EME is a rapid and effective technique for preparing human plasma samples for LC-MS/MS analysis.
The method demonstrated excellent selectivity, removing interfering matrix components.
Pa-EME offers a promising approach for high-throughput analysis of therapeutic drugs in biological samples.