Biomarker search using multidimensional native liquid fractionation of serum in microplates was evaluated. From different donors, homologous sample fractions with UV absorbance depending on state of illness were selected, and their constituents were identified and quantitated by MS. Analysis of sera of patients with Alport syndrome and severe inflammation proved the reliability of the method by confirming characteristic alterations. Moreover, 23 new marker candidates were detected for Alport syndrome, some of them being involved in matrix degradation and repair, and 33 new candidates for severe inflammation, among them alpha1B-glycoprotein cysteine-rich secretory protein and an apparently low molecular-weight albumin variant.
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