Faster Urinary Biomarkers Identification Using Mass Spectrometry
Author Information
Author(s): Khaled Benkali, Pierre Marquet, Jean-Philippe Rérolle, Yannick Le Meur, Louis Gastinel
Primary Institution: INSERM U850, France; Univ. of Limoges, France; CHU Limoges, France
Hypothesis
Can a dual decoupling strategy optimize the identification of urinary biomarkers using Nano-LC-MALDI-TOF/TOF mass spectrometry?
Conclusion
The dual decoupling strategy improved detection sensitivity and mass precision in urinary biomarker analysis.
Supporting Evidence
- Low coefficient of variation (CV%: 10–22%) and high correlation (R2 > 0.96) values were obtained for the quantification of spiked peptides.
- Excellent peptide integrity and stable signal intensity were found when MALDI plates were stored for periods of up to 2 months at +4°C.
- The dual decoupling strategy allowed focusing on the most discriminative analytes, increasing detection sensitivity.
Takeaway
This study found a new way to quickly identify markers in urine that can help doctors diagnose kidney problems without needing invasive tests.
Methodology
Urine samples from healthy volunteers were processed and analyzed using Nano-LC coupled to MALDI-TOF/TOF mass spectrometry.
Limitations
The study's findings may not be generalizable due to the small sample size and specific conditions of the experiments.
Participant Demographics
3 healthy volunteers who had not recently received any medication.
Digital Object Identifier (DOI)
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