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Uncovering pathophysiological changes in frontotemporal dementia using serum lipids
Abstract
Blood serum is enriched in lipids and has provided a platform to understand the pathogenesis of a number of human diseases with improved diagnosis and development of biomarkers. Understanding lipid changes in neurodegenerative diseases is particularly important because of the fact that lipids make up >50% of brain tissues. Frontotemporal dementia (FTD) is a common cause of early onset dementia, characterized by brain atrophy in the frontal and temporal regions, concomitant loss of lipids and dyslipidemia. However, little is known about the link between dyslipidemia and FTD pathophysiology. Here, we utilized an innovative approach – lipidomics based on mass spectrometry – to investigate three key aspects of FTD pathophysiology – mitochondrial dysfunction, inflammation, and oxidative stress. We analyzed the lipids that are intrinsically linked to neurodegeneration in serum collected from FTD patients and controls. We found that cardiolipin, acylcarnitine, lysophosphatidylcholine, platelet-activating factor, o-acyl-ω-hydroxy fatty acid and acrolein were specifically altered in FTD with strong correlation between the lipids, signifying pathophysiological changes in FTD. The lipid changes were verified by measurement of the common disease markers (e.g. ATP, cytokine, calcium) using conventional assays. When put together, these results support the use of lipidomics technology to detect pathophysiological changes in FTD.
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“The observed changes in cholesterol, CE, and lipid metabolism in this study support previous observations of altered lipid metabolism in FTLD patient tissue samples12,13,72, which may contribute to the development of tau pathology at the early stages of the disease.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [13]
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“Importantly, cholesterol dysregulation6–9 and lipid dyshomeostasis8,10–15 have been identified in several neurodegenerative diseases.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [13]
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“Previous studies have associated alterations of cholesterol and lipid metabolism in FTLD brain tissue72 and serum/plasma samples12,13.”
From GRAMD1B is a regulator of lipid homeostasis, autophagic flux and phosphorylated tau (2025) · cites this paper as [13]
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Metadata
- Authors
- Phan, K., He, Y., Pickford, R., Bhatia, S., Katzeff, J. S., Hodges, J. R., Piguet, O., Halliday, G. M., & Kim, W. S.
- Venue
- Scientific Reports
- Published
- 2020-02-27
- Volume
- 10
- Issue
- 1
- ISSN
- 2045-2322
- PMC
- PMC7046653
- Cited by
- 72
- References
- 8
- Language
- en
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