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Updated: Aug 19, 2026

Quantitative 3D In Silico Modeling (q3DISM) of Cerebral Amyloid-beta Phagocytosis in Rodent Models of Alzheimer's Disease
Published on: December 26, 2016
Amyloid inhibitors and Alzheimer's disease
1Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School, 77 Ave Louis Pasteur, Boston, MA 02115, USA. wxia@rics.bwh.harvard.edu
Abstract:
Neuritic plaques composed of amyloid beta-protein (A beta) are an early and invariant neuropathological feature of Alzheimer's disease (AD). The current preclinical search for drugs is mainly focused on decreasing A beta production by inhibiting beta- or gamma-secretase, blocking the formation of these plaques by preventing A beta protofibril and fibril formation, and alleviating the toxic effects of neuritic plaque deposition. Increasing numbers of drugs currently used as therapies for other diseases are now entering clinical trials for AD, but the molecular targets of these drugs and their relevance to A beta toxicity needs to be thoroughly addressed. This knowledge will allow us to fully understand the A beta-related pathways in AD pathogenesis and explore novel therapeutic interventions.
Insights
Alzheimer's disease (AD) features amyloid beta plaques. Current research targets reducing A beta production or toxicity, with repurposed drugs entering trials needing further investigation into their mechanisms and relevance to A beta toxicity.
Area of Science:
- Neuropathology
- Neurodegenerative Diseases
- Pharmacology
Background:
- Alzheimer's disease (AD) is characterized by neuritic plaques of amyloid beta-protein (A beta).
- A beta aggregation and deposition are central to AD pathogenesis.
- Current therapeutic strategies focus on modulating A beta production, aggregation, or toxicity.
Purpose of the Study:
- To review current preclinical drug development strategies for Alzheimer's disease.
- To emphasize the need for thorough investigation of molecular targets for repurposed drugs in AD clinical trials.
- To highlight the importance of understanding A beta-related pathways for novel therapeutic interventions.
Main Methods:
- Review of current preclinical research and clinical trial approaches for Alzheimer's disease.
- Analysis of therapeutic strategies targeting amyloid beta production and toxicity.
- Discussion on the relevance of molecular targets for repurposed drugs in AD.
Main Results:
- Preclinical drug development primarily focuses on inhibiting beta- or gamma-secretase to reduce A beta production.
- Strategies also aim to prevent A beta protofibril/fibril formation and mitigate neuritic plaque toxicity.
- Numerous drugs for other conditions are entering AD clinical trials, necessitating a clear understanding of their mechanisms.
Conclusions:
- Understanding the molecular targets and A beta relevance of repurposed drugs is crucial for effective AD therapy.
- Further research into A beta-related pathways will facilitate the development of novel and targeted Alzheimer's disease interventions.
- Comprehensive knowledge of drug mechanisms is essential for advancing Alzheimer's disease treatment.
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