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Cerebrospinal fluid/plasma quotients of essential and non-essential metals in patients with Alzheimer's disease.

Journal article
Authors Lars Gerhardsson
Thomas Lundh
Elisabet Londos
Lennart Minthon
Published in Journal of neural transmission (Vienna, Austria : 1996)
Volume 118
Issue 6
Pages 957-62
ISSN 1435-1463
Publication year 2011
Published at Institute of Medicine, School of Public Health and Community Medicine
Pages 957-62
Language en
Keywords Aged, Aged, 80 and over, Alzheimer Disease, blood, cerebrospinal fluid, physiopathology, Biological Markers, blood, cerebrospinal fluid, Brain Chemistry, physiology, Cohort Studies, Female, Humans, Male, Metals, blood, cerebrospinal fluid, Middle Aged
Subject categories Clinical Medicine


In this study, the quotients (Q) between metal concentrations in cerebrospinal fluid (CSF) and plasma were studied in subjects with Alzheimer's disease (AD) and referents to investigate if the leakage through the blood-CSF barrier (BCB) increased with increased duration and severity of the disease. Concentrations of 18 metals (Mg, Ca, Mn, Fe, Co, Ni, Cu, Zn, Se, Rb, Sr, Mo, Cd, Sn, Sb, Cs, Hg, and Pb) were determined by ICP-MS in plasma and cerebrospinal fluid in 264 patients with AD, and in 54 healthy referents. The quotients Q (Mn), Q (Rb), Q (Sb), Q (Pb) and Q (Hg) were significantly lower (p ≤ 0.003) and Q (Co) significantly higher (p ≤ 0.001) in subjects with AD as compared with the controls. Subjects in a subgroup with more severe AD, showed the same pattern. The metal leakage into CSF did not increase with increased duration and/or severity of the disease. The permeability of BCB varied considerably between the studied metals with low median quotients (Q ≤ 0.02) for Cd, Cu, Sb, Se and Zn and higher median quotients for Ca (Q ~ 0.5) and Mg (Q ~ 1.3), probably partly depending on differences in size and lipophilicity of metal-carrier complexes and specific carrier mechanisms.

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