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Induction of apoptosis in cerebellar granule neurons by low potassium: inhibition of death by insulin-like growth factor I and cAMP.
High levels of extracellular K+ ensure proper development and prolong survival of cerebellar granule neurons in culture. We find that when switched from a culture medium containing high K+ (25 mM) toExpand
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The nerve-growth factor.
Nerve growth factor (NGF) is a signaling protein [4] and growth factor implicated in a wide range of development and maintenance functions. NGF was discovered through a series of experiments in theExpand
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Apoptosis in cerebellar granule cells is blocked by high KCl, forskolin, and IGF-1 through distinct mechanisms of action: the involvement of intracellular calcium and RNA synthesis
Cerebellar granule cells deprived of depolarizing concentration of extracellular potassium, [K+]o, undergo apoptosis. We here report that this apoptotic process is associated with an immediate andExpand
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Glutamate neurotoxicity, oxidative stress and mitochondria
The excitatory neurotransmitter glutamate plays a major role in determining certain neurological disorders. This situation, referred to as ‘glutamate neurotoxicity’ (GNT), is characterized by anExpand
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Tau Cleavage and Dephosphorylation in Cerebellar Granule Neurons Undergoing Apoptosis
Cerebellar granule cells undergo apoptosis in culture after deprivation of potassium and serum. During this process we found that tau, a neuronal microtubule-associated protein that plays a key roleExpand
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NMDA receptor mediates tau-induced neurotoxicity by calpain and ERK/MAPK activation.
The altered function and/or structure of tau protein is postulated to cause cell death in tauopathies and Alzheimer's disease. However, the mechanisms by which tau induces neuronal death remainExpand
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Proteasome Involvement and Accumulation of Ubiquitinated Proteins in Cerebellar Granule Neurons Undergoing Apoptosis
We investigated the potential role of the ubiquitin proteolytic system in the death of cerebellar granule neurons induced by reduction of extracellular potassium. Inhibitors of proteasomal functionExpand
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NGF and BDNF signaling control amyloidogenic route and Aβ production in hippocampal neurons
Here, we report that interruption of NGF or BDNF signaling in hippocampal neurons rapidly activates the amyloidogenic pathway and causes neuronal apoptotic death. These events are associated with anExpand
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Endogenous Aβ causes cell death via early tau hyperphosphorylation
Alzheimer's disease (AD) is characterized by Aβ overproduction and tau hyperphosphorylation. We report that an early, transient and site-specific AD-like tau hyperphosphorylation at Ser262 and Thr231Expand
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APP is Phosphorylated by TrkA and Regulates NGF/TrkA Signaling
The pathogenic model of Alzheimer's disease (AD) posits that aggregates of amyloid β, a product of amyloid precursor protein (APP) processing, cause dementia. However, alterations of normal APPExpand
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