Implications for treatment: GABAA receptors in aging, Down syndrome and Alzheimer's disease.

Implications for treatment: GABAA receptors in aging, Down syndrome and Alzheimer's disease.
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DOI:
10.1111/j.1471-4159.2011.07237.x
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发表时间:
2011-05
影响因子:
4.7
通讯作者:
Mobley WC
Mobley WC
中科院分区:
医学2区
文献类型:
--
作者:
Rissman RA;Mobley WC

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除了进行性痴呆,阿尔茨海默病(AD)的特点是癫痫发作活动的发生率增加。虽然最初被认为是神经退行性变的次要过程,但最近的数据表明,兴奋性-抑制性(E/I)平衡的改变在AD中发生,可能是导致AD认知功能下降的主要机制。在这项研究中,我们讨论了GABAA受体在发育障碍中的相关研究和报道,如健康衰老的唐氏综合症,并强调了AD中GABAA能系统的已知异常。研究强调了了解单个GABAA受体亚单位组成的重要性,研究表明AD中特定的GABAA受体亚单位发生了变化,但总体上没有改变GABAA能系统。在这项研究中,我们回顾了关于GABA能系统在AD病理生物学中的实验数据,并讨论了相关的治疗意义。在开发调节GABA的AD疗法时,重要的是要考虑E/I平衡如何影响AD的发病机制,以及癫痫发作活动和认知能力下降之间的关系。
In addition to progressive dementia, Alzheimer's disease (AD) is characterized by increased incidence of seizure activity. Although originally discounted as a secondary process occurring as a result of neurodegeneration, more recent data suggest that alterations in excitatory-inhibitory (E/I) balance occur in AD and may be a primary mechanism contributing AD cognitive decline. In this study, we discuss relevant research and reports on the GABAA receptor in developmental disorders, such as Down syndrome, in healthy aging, and highlight documented aberrations in the GABAergic system in AD. Stressing the importance of understanding the subunit composition of individual GABAA receptors, investigations demonstrate alterations of particular GABAA receptor subunits in AD, but overall sparing of the GABAergic system. In this study, we review experimental data on the GABAergic system in the pathobiology of AD and discuss relevant therapeutic implications. When developing AD therapeutics that modulate GABA it is important to consider how E/I balance impacts AD pathogenesis and the relationship between seizure activity and cognitive decline.
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