fr
Article scientifique
Anglais

A global HILIC-MS approach to measure polar human cerebrospinal fluid metabolome: Exploring gender-associated variation in a cohort of elderly cognitively healthy subjects

Publié dansAnalytica Chimica Acta, vol. 1037, p. 327-337
Date de publication2018
Résumé

Cerebrospinal fluid (CSF) is a key body fluid that maintains the homeostasis in central nervous system (CNS). As a biofluid whose content reflects the brain metabolic activity, the CSF has been profiled in the context of neurological diseases to provide novel insights into the disease mechanisms. However, a global high-throughput approach to measure a broad diversity of polar metabolites present in CSF is lacking. Although still perceived as challenging and less reproducible, hydrophilic interaction liquid chromatography (HILIC) has recently evolved to offer the unprecedented coverage capacity of water-soluble metabolome. Here, we present a global HILIC high-resolution mass spectrometry-based (HRMS) approach that combines the profiling in acidic pH ESI (+) and basic pH ESI (-) mode to extend the coverage of CSF polar metabolome. This approach allowed us to annotate and measure a broad range of central carbon metabolites (implicated in glycolysis, TCA cycle, nucleotide, amino acid and fatty acid metabolism) in CSF collected from cognitively healthy elderly volunteers (n = 32), using a single extraction method. Metabolite annotation was achieved using the accurate mass, RT and MS/MS criteria, allowing for the characterization of 146 measurable metabolites. Exploration of characterized individual CSF profiles allowed for a discovery of intriguing gender-associated differences, with significantly higher acylcarnitine levels in men and higher taurine levels women. With this case study, we demonstrate the value of combined HILIC ESI ± HRMS profiling to assess CSF metabolome in clinical research studies.

Citation (format ISO)
GALLART-AYALA, Héctor et al. A global HILIC-MS approach to measure polar human cerebrospinal fluid metabolome: Exploring gender-associated variation in a cohort of elderly cognitively healthy subjects. In: Analytica Chimica Acta, 2018, vol. 1037, p. 327–337. doi: 10.1016/j.aca.2018.04.002
Fichiers principaux (1)
Article (Published version)
accessLevelRestricted
Identifiants
ISSN du journal1873-4324
360vues
1téléchargements

Informations techniques

Création24.10.2018 11:14:00
Première validation24.10.2018 11:14:00
Heure de mise à jour15.03.2023 16:01:19
Changement de statut15.03.2023 16:01:18
Dernière indexation17.01.2024 05:09:36
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack