Journal
BRAIN RESEARCH
Volume 1707, Issue -, Pages 216-226Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.brainres.2018.11.042
Keywords
Alzheimer's disease; GABAergic neurons; Inhibition excitation balance; Neuronal network dysfunction hypothesis; Mouse model of AD; Human AD
Categories
Funding
- DZNE
- Deutsche Forschungsgemeinschaft [SFB1089, C01, 1306]
- CoEN [CoEN3018]
- EU (ERA-NET MicroSynDep)
- Deutsche Studienstiftung
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Alzheimer's disease (AD) is characterized by the classical hallmarks of AD-deposition and tau-pathology that are thought to ultimately lead to synapse and neuron loss. Although long known, neuroinflammation has recently attracted a substantial amount of attention by researchers due to genome wide association studies (GWAS) that identified microglia associated genes to be correlated with sporadic AD. Besides that, cholinergic degeneration and gamma-aminobutyric acid (GABA) abnormalities have been identified in the brains of AD patients already decades ago, but have not received much attention over the last ten years. Recently, the neuronal network dysfunction hypothesis has revived interest in how impairments of neuronal communication at the network level lead to epileptiform activity and disrupted oscillations observed in the brains of AD patients and mouse models. Thereby, deficits in neuronal networks involved in learning and memory might ultimately cause memory impairments. In this context, an imbalance between excitation and inhibition has been hypothesized to contribute to neuronal network dysfunction. Here, disturbances of cholinergic and GABAergic transmission might play a crucial role. In this review, we will focus on GABAergic dysfunction in AD and mouse models of AD and how those might relate to neuronal network aberration and memory impairment.
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