Title: Absolute Myoglobin Quantitation in Serum by Combining Two-Dimensional Liquid Chromatography-Electrospray Ionization Mass Spectrometry and Novel Data Analysis Algorithms
Authors: MAYR BettinaKOHLBACHER OliverREINERT KnutSTURM MarcGRÖPL ClemensLANGE EvaKLEIN CHRISTOPHHUBER Christian
Citation: JOURNAL OF PROTEOME RESEARCH vol. 5 p. 414- 421
Publisher: AMER CHEMICAL SOC
Publication Year: 2006
JRC N°: JRC30701
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC30701
Type: Articles in Journals
Abstract: In order to measure myoglobin, a marker for myocardial infarction, directly in human serum, two-dimensional liquid chromatography in combination with electrospray ionization mass spectrometry was applied as analytical method. High-abundant serum proteins were depleted by strong anion-exchange chromatography. The myoglobin fraction was digested and injected onto a 60 x 0.2 mm i.d. monolithic capillary column for quantitation of selected peptides upon mass spectrometric detection. The addition of known amounts of myoglobin to the serum sample was utilized for calibration and horse myoglobin was added as an internal standard to improve reproducibility. Calibration graphs were linear and facilitated the reproducible and accurate determination of the myoglobin amount present in serum. Manual data evaluation using integrated peak areas and an automated multi-stage algorithm fitting two-dimensional models of peptide elution profiles and isotope patterns to the mass spectrometric raw data were compared. Applying the automated method, a myoglobin concentration of 460 pg/µl serum was determined with a maximum relative deviation from the theoretical value of 10.1% and a maximum relative standard deviation of 13.4%.
JRC Institute:Institute for Health and Consumer Protection

Files in This Item:
There are no files associated with this item.


Items in repository are protected by copyright, with all rights reserved, unless otherwise indicated.