Combination therapy prevents amyloid-dependent and -independent structural changes.
Combination therapy prevents amyloid-dependent and -independent structural changes.
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DOI:
10.1016/j.neurobiolaging.2010.12.007
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发表时间:
2012-07
影响因子:
4.2
通讯作者:
Siman R
中科院分区:
文献类型:
--
作者:
Malthankar-Phatak G;Poplawski S;Toraskar N;Siman R
Neuropathological features of Alzheimer’s disease (AD) are recapitulated in transgenic mice expressing familial AD-causing mutations, but ectopic transgene overexpression makes it difficult to relate these abnormalities to disease pathogenesis. Alternatively, the APP/PS-1 double knock-in mouse (DKI) produces mutant APP and PS-1 with normal levels and regulatory controls. Here, we investigated effects of amyloid on brain structure and neuroplasticity by vaccinating DKI mice with amyloid-β starting at 8 months of age. At 14 months, vaccination blocked cerebral amyloid deposition and its attendant microglial activation. Neuropil abnormalities were pronounced only within plaques, and included circumscribed loss and dysmorphology of axons, dendrites, terminals and spines. Blockade of amyloid deposition restored neuropil integrity. Amyloid removal did not rescue reductions in the hippocampal neural progenitor and neuroblast populations, but adding one month of voluntary exercise to amyloid-β vaccination markedly stimulated hippocampal neurogenesis. These results identify amyloid-dependent and –independent structural changes in the DKI mouse model of AD. Combining exercise with amyloid-directed immunotherapy produces greater restoration of brain structure and neuroplasticity than is achieved with either maneuver alone.
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影响因子:
3.5
作者:
Johnston, JA;Froelich, S;Cowburn, RF
通讯作者:
Cowburn, RF
影响因子:
--
作者:
Laurin, D;Verreault, R;Rockwood, K
通讯作者:
Rockwood, K
影响因子:
4.2
作者:
GRAEBER, MB;STREIT, WJ;KREUTZBERG, GW
通讯作者:
KREUTZBERG, GW
DOI:
10.1073/pnas.96.6.3228
发表时间:
1999-03-16
影响因子:
11.1
作者:
Hsia, AY;Masliah, E;Mucke, L
通讯作者:
Mucke, L
DOI:
10.1073/pnas.96.9.5274
发表时间:
1999-04-27
影响因子:
11.1
作者:
Knowles, RB;Wyart, C;Hyman, BT
通讯作者:
Hyman, BT