An analysis of the effects of Alzheimer's plaques on living neurons.
An analysis of the effects of Alzheimer's plaques on living neurons.
复制标题
分析阿尔茨海默病斑块对活神经元的影响。
DOI：
10.1016/0197-4580(93)90002-s
复制
发表时间：
1993
影响因子：
4.2
通讯作者：
Kater,SB
中科院分区：
文献类型：
--
作者：
Carpenter,MK;Crutcher,KA;Kater,SB
Although senile plaques represent a consistent neuropathological feature in Alzheimer's brains, it is not known what role plaques play in the etiology of the disease. Both growth-promoting and growth-inhibiting influences have been postulated. One of the major components in plaques, β-amyloid, has been shown to affect neuron survival and neurite outgrowth in vitro. Because plaques consist of other components in addition to β-amyloid, we undertook the present study to determine whether neuronal survival and neurite outgrowth are affected by the presence of a senile plaque. This was accomplished by using cryostat sections from the cerebral cortex of Alzheimer's patients as a substratum for cultured rat hippocampal neurons. Evaluation of these living neurons on Alzheimer's tissue demonstrated that senile plaques affect the amount, complexity, and direction of neurite outgrowth. In addition, neurons were more likely to extend processes away from plaques rather than toward a plaque. Although cell survival on plaques and in control regions was similar, cell survival was significantly reduced in the peri-plaque region. These observations suggest that senile plaques could have deleterious effects on neural organization in situ.
