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Plasma GDF-15 concentration is not elevated in open-angle glaucoma.
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- Author(s): Hubens, Wouter H. G.; Kievit, Mariëlle T.; Berendschot, Tos T. J. M.; de Coo, Irenaeus F. M.; Smeets, Hubert J. M.; Webers, Carroll A. B.; Gorgels, Theo G. M. F.
- Source:
PLoS ONE; 5/28/2021, Vol. 16 Issue 5, p1-14, 14p- Subject Terms:
- Source:
- Additional Information
- Abstract: Aim: Recently, the level of growth differentiation factor 15 (GDF-15) in blood, was proposed as biomarker to detect mitochondrial dysfunction. In the current study, we evaluate this biomarker in open-angle glaucoma (OAG), as there is increasing evidence that mitochondrial dysfunction plays a role in the pathophysiology of this disease. Methods: Plasma GDF-15 concentrations were measured with ELISA in 200 OAG patients and 61 age-matched controls (cataract without glaucoma). The OAG patient group consisted of high tension glaucoma (HTG; n = 162) and normal tension glaucoma (NTG; n = 38). Groups were compared using the Kruskal-Wallis nonparametric test with Dunn's multiple comparison post-hoc correction. GDF-15 concentration was corrected for confounders identified with forward linear regression models. Results: Before correcting for confounders, median plasma GDF-15 levels was significantly lower in the combined OAG group (p = 0.04), but not when analysing HTG and NTG patients separately. Forward linear regression analysis showed that age, gender, smoking and systemic hypertension were significant confounders affecting GDF-15 levels. After correction for these confounders, GDF-15 levels in OAG patients were no longer significantly different from controls. Subgroup analysis of the glaucoma patients did not show a correlation between disease severity and plasma GDF-15, but did reveal that for NTG patients, intake of dietary supplements, which potentially improve mitochondrial function, correlated with lower plasma GDF-15. Conclusion: The present study suggests that plasma GDF-15 is not suited as biomarker of mitochondrial dysfunction in OAG patients. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of PLoS ONE is the property of Public Library of Science and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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