NYMC Faculty Publications
Measurement of Sulfur-Containing Compounds Involved in the Metabolism and Transport of Cysteamine and Cystamine. Regional Differences in Cerebral Metabolism
First Page
3434
Last Page
3441
Document Type
Article
Publication Date
10-15-2009
Department
Biochemistry and Molecular Biology
Abstract
An HPLC method with coulometric detection is presented for the quantitation of cysteamine, cystamine, thialysine, glutathione, glutathione disulfide and an oxidized metabolite of thialysine [S-(2-aminoethyl)-L-cysteine ketimine decarboxylated dimer (AECK-DD)]. The advantage of coulometric detection is that derivatization is unnecessary if the analyte is redox sensitive. The method was used to quantitate several sulfur-containing compounds in plasma and brain following gavage feeding of cysteamine to rats. Cysteamine, cystamine, thialysine and AECK-DD were detected in the brains of these animals. Interestingly, cysteamine treatment resulted in greatly elevated levels of cerebral methionine, despite the fact that cysteamine is not a precursor of methionine.
Recommended Citation
Pinto, J. T., Khomenko, T., Szabo, S., McLaren, G. D., Denton, T. T., Krasnikov, B. F., et al. (2009). Measurement of sulfur-containing compounds involved in the metabolism and transport of cysteamine and cystamine. regional differences in cerebral metabolism. Journal of Chromatography.B, Analytical Technologies in the Biomedical and Life Sciences, 877(28), 3434-3441. doi:10.1016/j.jchromb.2009.05.041
Publisher's Statement
Originally published in Journal of Chromatography.B, Analytical Technologies in the Biomedical and Life Sciences. https://doi.org/10.1016/j.jchromb.2009.05.041
Comments
Please see the work itself for the complete list of authors.