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Assessing Iron Deposition in the Brains of 5xFAD Mice by Perls'/DAB Staining
Published on: May 23, 2025
Effects of diet on brain iron levels among healthy individuals: an MRI pilot study
Jesper Hagemeier1, Olivia Tong1, Michael G Dwyer1
1Department of Neurology, Buffalo Neuroimaging Analysis Center, School of Medicine and Biomedical Sciences, University of Buffalo, State University of New York, Buffalo, NY, USA.
Abstract:
Increased brain iron levels may be a risk factor for age-related neurologic disorders. Little is known about factors other than age and sex potentially affecting brain iron concentration. We investigated dietary habits (iron and calcium supplements, dairy products, vegetables, and red meat) as a potential modifiable predictor of brain iron levels using 3-T susceptibility-weighted magnetic resonance imaging. One hundred ninety volunteers were scanned, and mean phase and mean phase of low-phase voxels were determined for deep gray-matter (DGM) structures, including the caudate, putamen, thalamus, pulvinar, hippocampus, amygdala, red nucleus, and substantia nigra. There was a trend for lower mean phase (suggestive of high iron levels) in individuals taking iron supplements (p = 0.075). Among men, both increased dairy and vegetable intakes were significantly associated with lower DGM mean phase (p < 0.05) and mean phase of low-phase voxels (p < 0.05) in the thalamus, pulvinar, and red nucleus. In contrast, among women, iron levels were not associated with dairy consumption (p > 0.05) in the DGM but were inversely associated with vegetable intake in the thalamus (p = 0.006). Brain iron levels appear to be modulated by diet, with effects being highly dependent on gender.
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