Effects of human apolipoprotein E isoforms on the amyloid beta-protein concentration and lipid composition in brain low-density membrane domains.

Effects of human apolipoprotein E isoforms on the amyloid beta-protein concentration and lipid composition in brain low-density membrane domains.
复制标题

人载脂蛋白 E 异构体对大脑低密度膜域中淀粉样蛋白浓度和脂质组成的影响。

DOI:
10.1111/j.1471-4159.2006.04400.x
复制
发表时间:
2007
影响因子:
4.7
通讯作者:
Ihara,Yasuo
Ihara,Yasuo
中科院分区:
医学2区
文献类型:
--
作者:
Morishima-Kawashima,Maho;Han,Xianlin;Tanimura,Yu;Hamanaka,Hiroki;Kobayashi,Mariko;Sakurai,Takashi;Yokoyama,Minesuke;Wada,Koji;Nukina,Nobuyuki;Fujita,ShinobuC;Ihara,Yasuo

文献摘要

参考文献

相似文献

ε4等位基因编码的载脂蛋白E4(ApoE4)是阿尔茨海默病(AD)的重要遗传危险因素。载脂蛋白E4携带者加速了他们大脑中淀粉样蛋白β蛋白(Aβ)的沉积,这可能是他们对AD异常易感的原因。我们推测,载脂蛋白E4携带者脑内加速的Aβ沉积是通过富含胆固醇的低密度膜结构域介导的。因此,我们定量检测了纯合子apoE3和apoE4敲入(Ki)小鼠以及用β-淀粉样前体蛋白(APP)转基因小鼠(Tg2576)培育的小鼠的脑中A-β和各种脂类在LDM域的浓度。在18月龄的apoE3和apoE4Ki小鼠中,Aβ40和Aβ42在LDM域的浓度和Aβ42的比例没有差异。ApoE3/APP小鼠LDM域的Aβ40浓度略高于apoE4/APP小鼠,但显著高于apoE4/APP小鼠。LDM结构域的脂组成是以载脂蛋白E异构体特异性的方式调节的,但它对Aβ沉积的意义尚不清楚。这些数据表明,在Ki小鼠模型中,载脂蛋白E异构体对LDM域中Aβ浓度的特异性影响不存在。
Apolipoprotein E4 (apoE4) encoded by ε4 allele is a strong genetic risk factor for Alzheimer’s disease (AD). ApoE4 carriers have accelerated amyloid β‐protein (Aβ) deposition in their brains, which may account for their unusual susceptibility to AD. We hypothesized that the accelerated Aβ deposition in the brain of apoE4 carriers is mediated through cholesterol‐enriched low‐density membrane (LDM) domains. Thus, the concentrations of Aβ and various lipids in LDM domains were quantified in the brains of homozygous apoE3 and apoE4 knock‐in (KI) mice, and in the brains of those mice bred with β‐amyloid precursor protein (APP) transgenic mice (Tg2576). The Aβ40 and Aβ42 concentrations and the Aβ42 proportions in LDM domains did not differ between apoE3 and apoE4 KI mice up to 18 months of age. The Aβ40 concentration in the LDM domains was slightly, but significantly higher in apoE3/APP mice than in apoE4/APP mice. The lipid composition of LDM domains was modulated in an apoE isoform‐specific manner, but its significance for Aβ deposition remains unknown. These data show that the apoE isoform‐specific effects on the Aβ concentration in LDM domains do not occur in KI mouse models.
DOI: 10.1037/0033-295x.85.6.525
发表时间: 1978
影响因子: 5.4
作者:
M. Treisman
通讯作者: M. Treisman
DOI: --
发表时间: 1970
期刊:
影响因子: --
作者:
W. A. Winnick;S. A. Daniel
通讯作者: S. A. Daniel
促进单词识别:引起Logogen模型变化的实验
DOI: --
发表时间: 1979
期刊:
影响因子: --
作者:
J. Morton
通讯作者: J. Morton
使用频率作为单词识别阈值的决定因素。
DOI: 10.1037/h0054636
发表时间: 1952
影响因子: --
作者:
R. Solomon;L. Postman
通讯作者: L. Postman
DOI: 10.1037//0278-7393.9.1.21
发表时间: 1983
期刊: Journal of experimental psychology. Learning, memory, and cognition
影响因子: --
作者:
L. Jacoby
通讯作者: L. Jacoby