Abeta plaques lead to aberrant regulation of calcium homeostasis in vivo resulting in structural and functional disruption of neuronal networks.
Abeta plaques lead to aberrant regulation of calcium homeostasis in vivo resulting in structural and functional disruption of neuronal networks.
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DOI:
10.1016/j.neuron.2008.06.008
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发表时间:
2008-07-31
期刊:
影响因子:
16.2
通讯作者:
Bacskai BJ
中科院分区:
文献类型:
--
作者:
Kuchibhotla KV;Goldman ST;Lattarulo CR;Wu HY;Hyman BT;Bacskai BJ
Alzheimer’s disease is characterized by the deposition of senile plaques and progressive dementia. The molecular mechanisms that couple plaque deposition to neural system failure, however, are unknown. Using transgenic mouse models of AD together with multiphoton imaging, we measured neuronal calcium in individual neurites and spines in vivo using the genetically-encoded calcium indicator YC3.6. Quantitative imaging revealed elevated [Ca2+]i (calcium overload) in ~20% of neurites in APP mice with cortical plaques, compared to less than 5% in wildtype mice, PS1-mutant mice, or young APP mice (animals without cortical plaques). Calcium overload depended on the existence and proximity to plaques. The downstream consequences included the loss of spino-dendritic calcium compartmentalization (critical for synaptic integration) and a distortion of neuritic morphologies mediated, in part, by the phosphatase calcineurin. Together, these data demonstrate that senile plaques impair neuritic calcium homeostasis in vivo and result in the structural and functional disruption of neuronal networks.
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DOI:
10.1016/j.bbrc.2004.07.136
发表时间:
2004-10-01
影响因子:
3.1
作者:
Akbari, Y;Hitt, BD;LaFerla, FM
通讯作者:
LaFerla, FM
DOI:
10.1073/pnas.90.2.567
发表时间:
1993-01-15
影响因子:
11.1
作者:
ARISPE, N;ROJAS, E;POLLARD, HB
通讯作者:
POLLARD, HB
DOI:
10.1073/pnas.170278697
发表时间:
2000-08-15
影响因子:
11.1
作者:
Cox, CL;Denk, W;Svoboda, K
通讯作者:
Svoboda, K
影响因子:
2.7
作者:
Dineley, Kelly T.;Hogan, Dale;Taglialatela, Giulio
通讯作者:
Taglialatela, Giulio
影响因子:
6.1
作者:
Garcia-Alloza, Monica;Robbins, Elissa M.;Frosch, Matthew P.
通讯作者:
Frosch, Matthew P.