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ER stress and UPR in Alzheimer's disease: mechanisms, pathogenesis, treatments
Amir Ajoolabady1, Dan Lindholm2,3, Jun Ren4,5
1Shanghai Institute of Cardiovascular Diseases, Department of Cardiology, Zhongshan Hospital Fudan University, Shanghai, China.
Abstract:
Alzheimer's disease (AD) is a devastating neurodegenerative disorder characterized by gradual loss of memory and cognitive function, which constitutes a heavy burden on the healthcare system globally. Current therapeutics to interfere with the underlying disease process in AD is still under development. Although many efforts have centered on the toxic forms of Aβ to effectively tackle AD, considering the unsatisfactory results so far it is vital to examine other targets and therapeutic approaches as well. The endoplasmic reticulum (ER) stress refers to the build-up of unfolded or misfolded proteins within the ER, thus, perturbing the ER and cellular homeostasis. Emerging evidence indicates that ER stress contributes to the onset and development of AD. A thorough elucidation of ER stress machinery in AD pathology may help to open up new therapeutic avenues in the management of this devastating condition to relieve the cognitive dementia symptoms. Herein, we aim at deciphering the unique role of ER stress in AD pathogenesis, reviewing key findings, and existing controversy in an attempt to summarize plausible therapeutic interventions in the management of AD pathophysiology.
Insights
Alzheimer's disease involves endoplasmic reticulum (ER) stress, where unfolded proteins disrupt cell balance. Understanding ER stress offers new therapeutic targets for cognitive dementia symptoms.
Area of Science:
- Neuroscience
- Cellular Biology
- Pathology
Background:
- Alzheimer's disease (AD) is a progressive neurodegenerative disorder causing memory and cognitive decline.
- Current AD treatments are limited, necessitating exploration of alternative therapeutic targets beyond amyloid-beta (Aβ).
- Endoplasmic reticulum (ER) stress, caused by protein misfolding, disrupts cellular homeostasis and is increasingly linked to AD.
Purpose of the Study:
- To elucidate the role of ER stress in Alzheimer's disease pathogenesis.
- To review key findings and controversies regarding ER stress in AD.
- To summarize potential therapeutic interventions targeting ER stress for AD management.
Main Methods:
- Literature review of studies on ER stress and Alzheimer's disease.
- Analysis of existing research on ER stress mechanisms in AD pathology.
- Synthesis of findings to identify therapeutic strategies.
Main Results:
- Emerging evidence strongly implicates ER stress in the initiation and progression of AD.
- Dysfunctional ER stress pathways contribute to neurodegeneration in Alzheimer's disease.
- Targeting ER stress machinery presents a promising avenue for AD treatment.
Conclusions:
- ER stress is a significant factor in Alzheimer's disease pathophysiology.
- Further research into ER stress mechanisms can reveal novel therapeutic targets.
- Interventions aimed at alleviating ER stress may help manage cognitive symptoms in AD.
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