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@ARTICLE{Matusch:22035,
author = {Matusch, A. and Becker, J.S.},
title = {{B}io-imaging of metals in a mouse model of {A}lzheimer's
disease by laser ablation inductively coupled plasma mass
spectrometry},
journal = {Biomedical Spectroscopy and Imaging},
volume = {1},
issn = {2212-8794},
address = {Birmingham, Ala.},
publisher = {IOS Press},
reportid = {PreJuSER-22035},
pages = {57 - 65},
year = {2012},
note = {Record converted from VDB: 12.11.2012},
abstract = {Quantitative mass spectrometry imaging (MSI) of metals in
biological tissue sections by laser ablation inductively
coupled plasma mass spectrometry (LA-ICP-MS) using
matrix-matched laboratory standards has been established
previously. Here an improved calibration strategy is
proposed, correcting for variable section thickness by
normalization of sample and standard ion intensities to the
average 13C+ ion signal of all ablated sample and standard
material, respectively. Altered metal metabolism is known in
Alzheimer's disease of which amyloid precursor protein (APP)
transgenic mice are a popular model. Quantitative
distribution analysis of Fe, Zn, Cu and Mn in horizontal
brain sections of 45 week old Tg2576 transgenic mice showed
a $22\%$ decrease of Cu and changes of Fe, Zn and Mn of
$−1\%,$ $−7\%$ and $−17\%.$ Local evaluation across a
set of anatomically defined regions of interest showed an
increased circum-ventricular to parenchyma ratio of Cu
pointing to a higher Cu efflux and a heterogeneous pattern
of Fe changes pointing to clearance of Fe at the sites of
early pathology. Congruencies to synchrotron X-ray
fluorescence data on distinct types of APP mice are
discussed. MSI by LA-ICP-MS thus proved as a valuable and
versatile tool for studying the cerebral
metallo-architecture and the validation of animal models.},
keywords = {Adolescent / Adult / Bacteremia: epidemiology / Bacteremia:
microbiology / Bacteria: isolation $\&$ purification / Child
/ Child, Preschool / Female / Gram-Negative Bacterial
Infections: epidemiology / Gram-Negative Bacterial
Infections: microbiology / Gram-Positive Bacterial
Infections: epidemiology / Gram-Positive Bacterial
Infections: microbiology / Humans / Incidence / Infant /
Intestine, Small: transplantation / Male / Middle Aged /
Postoperative Complications / Retrospective Studies / Risk
Factors / Time Factors / Young Adult},
cin = {ZCH / INM-2},
ddc = {610},
cid = {I:(DE-Juel1)ZCH-20090406 / I:(DE-Juel1)INM-2-20090406},
pnm = {Funktion und Dysfunktion des Nervensystems},
pid = {G:(DE-Juel1)FUEK409},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:22093913},
doi = {10.3233/BSI-2012-0005},
url = {https://juser.fz-juelich.de/record/22035},
}