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Title: Early phenotypic changes in transgenic mice that overexpress different mutants of amyloid precursor protein in brain
Authors: Moechars, Diederik ×
Dewachter, Ilse
Lorent, K
Reversé, D
Baekelandt, Veerle
Naidu, A
Tesseur, Ina
Spittaels, K
Van Den Haute, Chris
Checler, F
Godaux, E
Cordell, B
Van Leuven, Freddy #
Issue Date: Mar-1999
Publisher: American Society for Biochemistry and Molecular Biology
Series Title: Journal of Biological Chemistry vol:274 issue:10 pages:6483-6492
Abstract: Transgenic mice overexpressing different forms of amyloid precursor protein (APP), i.e. wild type or clinical mutants, displayed an essentially comparable early phenotype in terms of behavior, differential glutamatergic responses, deficits in maintenance of long term potentiation, and premature death. The cognitive impairment, demonstrated in F1 hybrids of the different APP transgenic lines, was significantly different from nontransgenic littermates as early as 3 months of age. Biochemical analysis of secreted and membrane-bound APP, C-terminal "stubs," and Abeta(40) and Abeta(42) peptides in brain indicated that no single intermediate can be responsible for the complex of phenotypic dysfunctions. As expected, the Abeta(42) levels were most prominent in APP/London transgenic mice and correlated directly with the formation of amyloid plaques in older mice of this line. Plaques were associated with immunoreactivity for hyperphosphorylated tau, eventually signaling some form of tau pathology. In conclusion, the different APP transgenic mouse lines studied display cognitive deficits and phenotypic traits early in life that dissociated in time from the formation of amyloid plaques and will be good models for both early and late neuropathological and clinical aspects of Alzheimer's disease.
URI: 
ISSN: 0021-9258
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Associated Laboratories - miscellaneous (-)
Research Group for Neurobiology and Gene Therapy
Department of Human Genetics - miscellaneous
× corresponding author
# (joint) last author

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