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本文引用的文献

1
Cholinergic changes in the APP23 transgenic mouse model of cerebral amyloidosis.脑淀粉样血管病APP23转基因小鼠模型中的胆碱能变化
J Neurosci. 2002 Apr 15;22(8):3234-43. doi: 10.1523/JNEUROSCI.22-08-03234.2002.
2
Formation of neurofibrillary tangles in P301l tau transgenic mice induced by Abeta 42 fibrils.由β淀粉样蛋白42原纤维诱导的P301l tau转基因小鼠中神经原纤维缠结的形成。
Science. 2001 Aug 24;293(5534):1491-5. doi: 10.1126/science.1062097.
3
Enhanced neurofibrillary degeneration in transgenic mice expressing mutant tau and APP.在表达突变型tau蛋白和淀粉样前体蛋白(APP)的转基因小鼠中神经原纤维变性增强。
Science. 2001 Aug 24;293(5534):1487-91. doi: 10.1126/science.1058189.
4
Plaque-induced abnormalities in neurite geometry in transgenic models of Alzheimer disease: implications for neural system disruption.阿尔茨海默病转基因模型中斑块诱导的神经突几何形状异常:对神经系统破坏的影响。
J Neuropathol Exp Neurol. 2001 Aug;60(8):753-8. doi: 10.1093/jnen/60.8.753.
5
Neuropathology of mice carrying mutant APP(swe) and/or PS1(M146L) transgenes: alterations in the p75(NTR) cholinergic basal forebrain septohippocampal pathway.携带突变型APP(swe)和/或PS1(M146L)转基因小鼠的神经病理学:p75(NTR)胆碱能基底前脑隔海马通路的改变。
Exp Neurol. 2001 Aug;170(2):227-43. doi: 10.1006/exnr.2001.7710.
6
Fibrillar beta-amyloid evokes oxidative damage in a transgenic mouse model of Alzheimer's disease.在阿尔茨海默病的转基因小鼠模型中,纤维状β-淀粉样蛋白引发氧化损伤。
Neuroscience. 2001;104(3):609-13. doi: 10.1016/s0306-4522(01)00115-4.
7
Age-related amyloid beta deposition in transgenic mice overexpressing both Alzheimer mutant presenilin 1 and amyloid beta precursor protein Swedish mutant is not associated with global neuronal loss.在同时过度表达阿尔茨海默病突变早老素1和淀粉样前体蛋白瑞典突变体的转基因小鼠中,与年龄相关的淀粉样β沉积与整体神经元丢失无关。
Am J Pathol. 2000 Jul;157(1):331-9. doi: 10.1016/s0002-9440(10)64544-0.
8
Description of microcolumnar ensembles in association cortex and their disruption in Alzheimer and Lewy body dementias.联合皮质中微柱状集合体的描述及其在阿尔茨海默病和路易体痴呆中的破坏。
Proc Natl Acad Sci U S A. 2000 May 9;97(10):5039-43. doi: 10.1073/pnas.060009897.
9
Amyloid beta interacts with the amyloid precursor protein: a potential toxic mechanism in Alzheimer's disease.β淀粉样蛋白与淀粉样前体蛋白相互作用:阿尔茨海默病中的一种潜在毒性机制。
Nat Neurosci. 2000 May;3(5):460-4. doi: 10.1038/74833.
10
The impact of different presenilin 1 andpresenilin 2 mutations on amyloid deposition, neurofibrillary changes and neuronal loss in the familial Alzheimer's disease brain: evidence for other phenotype-modifying factors.不同早老素1和早老素2突变对家族性阿尔茨海默病大脑中淀粉样蛋白沉积、神经原纤维变化及神经元丢失的影响:其他表型修饰因子的证据
Brain. 1999 Sep;122 ( Pt 9):1709-19. doi: 10.1093/brain/122.9.1709.

硫黄素 S 阳性淀粉样沉积物在转基因小鼠和阿尔茨海默病中的神经毒性作用。

Neurotoxic effects of thioflavin S-positive amyloid deposits in transgenic mice and Alzheimer's disease.

作者信息

Urbanc B, Cruz L, Le R, Sanders J, Ashe K Hsiao, Duff K, Stanley H E, Irizarry M C, Hyman B T

机构信息

Center for Polymer Studies and Department of Physics, Boston University, Boston, MA 02215, USA.

出版信息

Proc Natl Acad Sci U S A. 2002 Oct 29;99(22):13990-5. doi: 10.1073/pnas.222433299. Epub 2002 Oct 9.

DOI:10.1073/pnas.222433299
PMID:12374847
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC137824/
Abstract

Despite extensive deposition of putatively neurotoxic amyloid-beta (Abeta) protein in the brain, it has not been possible to demonstrate an association of Abeta deposits with neuronal loss in Alzheimer's disease (AD), and neuronal loss is minimal in transgenic mouse models of AD. Using triple immunostaining confocal microscopy and analyzing the images with the cross-correlation density map method from statistical physics, we directly compared Abeta deposition, Abeta morphology, and neuronal architecture. We found dramatic, focal neuronal toxicity associated primarily with thioflavin S-positive fibrillar Abeta deposits in both AD and PSAPP mice. These results, along with computer simulations, suggest that Abeta develops neurotoxic properties in vivo when it adopts a fibrillar beta-pleated sheet conformation.

摘要

尽管在大脑中存在大量推测具有神经毒性的β淀粉样蛋白(Aβ)沉积,但在阿尔茨海默病(AD)中,尚未证实Aβ沉积与神经元丢失之间存在关联,并且在AD转基因小鼠模型中神经元丢失极少。我们使用三重免疫染色共聚焦显微镜,并采用统计物理学中的互相关密度图方法对图像进行分析,直接比较了Aβ沉积、Aβ形态和神经元结构。我们发现,在AD和PSAPP小鼠中,显著的局灶性神经元毒性主要与硫黄素S阳性的纤维状Aβ沉积有关。这些结果以及计算机模拟表明,当Aβ采用纤维状β折叠片构象时,它在体内会产生神经毒性特性。