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A Metabolomics Profiling of Glaucoma Points to Mitochondrial Dysfunction, Senescence, and Polyamines Deficiency

Abstract : Purpose: To determine the plasma metabolomic signature of primary open-angle glaucoma (POAG). Methods: We compared the metabolomic profiles of plasma from individuals with POAG (n = 36) with age- and sex-matched controls with cataract (n = 27). A targeted metabolomics study was performed using the standardized p180 Biocrates Absolute IDQ p180 kit with a QTRAP 5500 mass spectrometer. Multivariate analyses were performed using principal component analysis (PCA) and the least absolute shrinkage and selection operator (LASSO) method. Results: Among the 151 metabolites accurately measured, combined univariate and multivariate analyses revealed 18 discriminant metabolites belonging to the carbohydrate, acyl-carnitine, phosphatidylcholine, amino acids, and polyamine families. The metabolomic signature of POAG points to three closely interdependent pathophysiologic conditions; that is, defective mitochondrial oxidation of energetic substrates, altered metabolism resembling that observed in senescence, and a deficiency in spermidine and spermine, both polyamines being involved in the protection of retinal ganglion cells. Conclusions: Our results highlight a systemic and age-related mitochondrial defect in the pathogenesis of POAG.
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https://hal.univ-angers.fr/hal-02388225
Contributeur : Guy Lenaers <>
Soumis le : mercredi 5 mai 2021 - 12:32:45
Dernière modification le : mardi 10 août 2021 - 15:12:04
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Stéphanie Leruez, Alexandre Marill, Thomas Bresson, Grégoire de Saint Martin, Adrien Buisset, et al.. A Metabolomics Profiling of Glaucoma Points to Mitochondrial Dysfunction, Senescence, and Polyamines Deficiency. Investigative Ophthalmology & Visual Science, Association for Research in Vision and Ophthalmology, 2018, 59 (11), pp.4355. ⟨10.1167/iovs.18-24938⟩. ⟨hal-02388225⟩

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