Abstract
We introduce a matrix-assisted laser desorption ionization-Fourier transform ion cyclotron resonance (MALDI-FT-ICR) method for quantitative peptide profiling, using peak height as a measure for abundance. Relative standard deviations in peak height of peptides spiked over 3 orders of magnitude in concentration were below 10% and allowed for accurate comparisons between multiple sclerosis and controls. Application on a set of 163 cerebrospinal fluid (CSF) samples showed significantly differential abundant peptides, which were subsequently identified into proteins (e.g., chromogranin A, clusterin, and complement C3).
Original language | Undefined/Unknown |
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Pages (from-to) | 1404-1414 |
Number of pages | 11 |
Journal | Journal of Proteome Research |
Volume | 8 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2009 |