Quantification of Mesna (cas 19767-45-4) and total Mesna (cas 19767-45-4) in kidney tissue by high-performance liquid chromatography with electrochemical detection
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Add time:09/24/2019 Source:sciencedirect.com
A sensitive and selective assay for the determination of Mesna (cas 19767-45-4) and total mesna in tissue was developed and validated. After a simple homogenization, extraction and deproteinization step, mesna could be measured immediately by HPLC with an electrochemical detector provided with a sensitive wall-jet gold electrode. Total mesna (i.e., free mesna and mesna present in mesna disulfides and mixed mesna disulfides) could be measured after pre-column reduction with sodium borohydride to free mesna. The lower limit of quantification of mesna and total mesna was for both compounds 10 nmol/g. The assays for mesna and total mesna in tissue were linear over the ranges of 10–3000 and 10–10 000 nmol/g, respectively. The within-day and between-day precisions of both methods were better than 9%. The within-day and between-day accuracy of the mesna assay ranged from 103.7 to 113.6%, whereas the accuracies of the total mesna assay ranged from 97.8 to 106.7%. Mesna in an EDTA containing tissue homogenate or in deproteinized tissue homogenate stored at −80 °C was stable for at least 12 weeks. Total mesna was stable under all conditions measured. The developed assays will be applied for the determination of the distribution of mesna and total mesna in tissues of the rat after administration of mesna or BNP7787.
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