Neuronal activity regulates the regional vulnerability to amyloid-β deposition.

Neuronal activity regulates the regional vulnerability to amyloid-β deposition.
复制标题

DOI:
10.1038/nn.2801
复制
发表时间:
2011-06
影响因子:
25
通讯作者:
Holtzman DM
Holtzman DM
中科院分区:
医学1区
文献类型:
--
作者:
Bero AW;Yan P;Roh JH;Cirrito JR;Stewart FR;Raichle ME;Lee JM;Holtzman DM

文献摘要

参考文献

被引文献

相似文献

淀粉样蛋白-β (a β)斑块沉积在特定的大脑区域是阿尔茨海默病(AD)的主要病理标志。然而,AD患者对Aβ沉积的区域易感性的机制尚不清楚。在此,我们提供了内源性神经元活动调节间质液(ISF) Aβ的区域浓度,从而驱动局部Aβ聚集的证据。通过体内微透析,我们发现APP转基因小鼠在斑块沉积前的多个脑区ISF a β水平与随后斑块沉积的程度和乳酸浓度(神经元活动的标志)成正比。此外,单侧触须刺激增加了ISF Aβ,单侧触须剥夺降低了对侧桶状皮质中ISF Aβ和乳酸水平。长期单侧触须剥夺可减少淀粉样斑块的形成和生长。我们的研究结果提出了一种机制来解释AD患者特定大脑区域对a β沉积的易感性。
Amyloid-β (Aβ) plaque deposition in specific brain regions is a major pathological hallmark of Alzheimer’fs disease (AD). However, the mechanism underlying the regional vulnerability to Aβ deposition in AD is unknown. Herein, we provide evidence that endogenous neuronal activity regulates the regional concentration of interstitial fluid (ISF) Aβ which drives local Aβ aggregation. Using in vivo microdialysis, we show that ISF Aβ levels in multiple brain regions of APP transgenic mice prior to plaque deposition were commensurate with the degree of subsequent plaque deposition and to the concentration of lactate, a marker of neuronal activity. Furthermore, unilateral vibrissae stimulation increased ISF Aβ, and unilateral vibrissae deprivation decreased ISF Aβ and lactate levels in contralateral barrel cortex. Long term unilateral vibrissae deprivation decreased amyloid plaque formation and growth. Our results suggest a mechanism to account for the vulnerability of specific brain regions to Aβ deposition in AD.
DOI: 10.1016/j.neuron.2009.06.026
发表时间: 2009-08-13
期刊: NEURON
影响因子: 16.2
作者:
Kim, Jungsu;Basak, Jacob M.;Holtzman, David M.
通讯作者: Holtzman, David M.
DOI: 10.1126/science.1180962
发表时间: 2009-11-13
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Kang JE;Lim MM;Bateman RJ;Lee JJ;Smyth LP;Cirrito JR;Fujiki N;Nishino S;Holtzman DM
通讯作者: Holtzman DM
DOI: 10.1126/science.1166673
发表时间: 2009-04-03
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Gilestro GF;Tononi G;Cirelli C
通讯作者: Cirelli C
DOI: 10.1016/s0896-6273(03)00124-7
发表时间: 2003-03-27
期刊: NEURON
影响因子: 16.2
作者:
Kamenetz, F;Tomita, T;Malinow, R
通讯作者: Malinow, R
DOI: 10.1073/pnas.0308627101
发表时间: 2004-03-30
影响因子: 11.1
作者:
Greicius, MD;Srivastava, G;Menon, V
通讯作者: Menon, V