title: Transition metal abnormalities in progressive dementias.
abstract: Abnormal distributions of transition metals inside the brain are potential diagnostic markers for several central nervous system diseases, including Alzheimer's disease (AD), Parkinson's disease, dementia with Lewy bodies (DLB), bipolar disorders and depression. To further explore this possibility, the total concentrations of iron, zinc, copper, manganese, aluminum, chromium and cadmium were measured in post-mortem hippocampus and amygdala tissues taken from AD, DLB and Control patients. A statistically significant near fifty percent reduction in the total copper levels of AD patients was observed in both the hippocampus and amygdala. The statistical power of the hippocampus and amygdala copper analysis was found to be 86 and 74% respectively. No statistically significant deviations in the total metal concentrations were found for zinc, manganese, chromium or aluminum. Iron was found to be increased by 38% in AD amygdala tissues, but was unchanged in AD hippocampus tissues. Accounting for differences in tissue water content, as a function of both tissue type and disease state, revealed more consistencies with previous literature. To aid in the design of future experiments, the effect sizes for all tissue types and metals studied are also presented.
authors.affiliation: Choju Medical Institute, Fukushimura Hospital, Toyohashi, Japan.
authors.forename: Hiroyasu
authors.initials: H
authors.lastname: Akatsu
authors.forename: Akira
authors.initials: A
authors.lastname: Hori
authors.forename: Takayuki
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Mari
authors.initials: M
authors.lastname: Yoshida
authors.forename: Maya
authors.initials: M
authors.lastname: Mimuro
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Hashizume
authors.forename: Ikuo
authors.initials: I
authors.lastname: Tooyama
authors.forename: Eric M
authors.initials: EM
authors.lastname: Yezdimer
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000544:Alzheimer Disease / Q000378:metabolism; D000679:Amygdala / Q000737:chemistry*; D003300:Copper / Q000032:analysis; D003704:Dementia / Q000378:metabolism*; D005260:Female; D006624:Hippocampus / Q000737:chemistry*; D006801:Humans; D007501:Iron / Q000032:analysis; D020961:Lewy Body Disease / Q000378:metabolism; D008297:Male; D010300:Parkinson Disease / Q000378:metabolism; D028561:Transition Elements / Q000032:analysis*; D015032:Zinc / Q000032:analysis
chemical_list: D028561:Transition Elements; D003300:Copper; D007501:Iron; D015032:Zinc