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Relationship between brain R2 and liver and serum Iron concentrations in elderly men

House, M.J., St Pierre, T.G., Milward, E.A., Bruce, D.G. and Olynyk, J.K. (2010) Relationship between brain R2 and liver and serum Iron concentrations in elderly men. Magnetic Resonance in Medicine, 63 (2). pp. 275-281.

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Studies of iron overload in humans and animals suggest that brain iron concentrations may be related in a regionally specific way to body iron status. However, few quantitative studies have investigated the associations between peripheral and regional brain iron in a normal elderly cohort. To examine these relationships, we used MRI to measure the proton transverse relaxation rate (R2) in 13 gray and white matter brain regions in 18 elderly men (average age, 75.5 years) with normal cognition. Brain R2 values were compared with liver iron concentrations measured using the FerriScan® MRI technique and serum iron indices. R2 values in high-iron gray matter regions were significantly correlated (positively) with liver iron concentrations (globus pallidus, ventral pallidum) and serum transferrin saturation (caudate nucleus, globus pallidus, putamen) measured concurrently with brain R2, and with serum iron concentrations (caudate nucleus, globus pallidus) measured three years before the current study. Our results suggest that iron levels in specific gray matter brain regions are influenced by systemic iron status in elderly men.

Item Type: Journal Article
Publisher: Wiley-Blackwell
Copyright: © 2010 Wiley-Liss, Inc.
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