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Alterations in apolipoprotein E expression during aging and neurodegeneration
E Masliah1, M Mallory, I Veinbergs
1Department of Neurosciences, University of California, School of Medicine, San Diego, La Jolla 92093-0624, USA.
Progress in Neurobiology
|December 1, 1996
Summary
Apolipoprotein E (apoE) is crucial for brain cholesterol transport and synaptic integrity. Its dysfunction is linked to neurodegenerative diseases like Alzheimer's.
Area of Science:
- Neuroscience
- Molecular Biology
- Biochemistry
Background:
- Apolipoprotein E (apoE) is a key protein in cholesterol metabolism.
- In the nervous system, apoE is implicated in synaptic maintenance during aging and after injury.
Purpose of the Study:
- To review the current understanding of apoE functions in the nervous system.
- To explore the role of apoE malfunction in neurodegenerative disorders, particularly Alzheimer's disease.
Main Methods:
- Literature review of recent studies on apoE function.
- Analysis of apoE's proposed mechanisms in synaptic integrity.
Main Results:
- ApoE stabilizes neuronal cytoskeleton.
- ApoE facilitates cholesterol transport for synaptic repair via the low density lipoprotein receptor-related protein pathway.
- ApoE regulates neuronal-extracellular matrix interactions and intracellular calcium levels.
Conclusions:
- ApoE plays multifaceted roles in maintaining neuronal health and synaptic function.
- Understanding apoE's mechanisms is vital for addressing neurodegenerative conditions.