Abstract:
:The impact of Abeta deposition upon cholinergic intrinsic cortical and striatal, as well as basal forebrain long projection neuronal systems was qualitatively and quantitatively evaluated in young (2-6 months) and middle-aged (10-16 months) APPswe/PS1DeltaE9 transgenic (tg) mice. Cholinergic neuritic swellings occurred as early as 2-3 months of age in the cortex and hippocampus and 5-6 months in the striatum of tg mice. However, cholinergic neuron number or choline acetyltransferase (ChAT) optical density measurements remained unchanged in the forebrain structures with age in APPswe/PS1DeltaE9 tg mice. ChAT enzyme activity decreased significantly in the cortex and hippocampus of middle-aged tg mice. These results suggest that Abeta deposition has age-dependent effects on cortical and hippocampal ChAT fiber networks and enzyme activity, but does not impact the survival of cholinergic intrinsic or long projection forebrain neurons in APPswe/PS1DeltaE9 tg mice.
journal_name
Neurobiol Disjournal_title
Neurobiology of diseaseauthors
Perez SE,Dar S,Ikonomovic MD,DeKosky ST,Mufson EJdoi
10.1016/j.nbd.2007.06.015subject
Has Abstractpub_date
2007-10-01 00:00:00pages
3-15issue
1eissn
0969-9961issn
1095-953Xpii
S0969-9961(07)00129-5journal_volume
28pub_type
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