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Common features between diabetes mellitus and Alzheimer's disease
1Brain and Mind Research Institute, University of Sydney, Camperdown, NSW, Australia. jgoetz@med.usyd.edu.au
Cellular and Molecular Life Sciences : CMLS
|March 7, 2009
Summary
Type 2 diabetes (T2DM) and Alzheimer's disease (AD) share common pathogenic mechanisms, both being amyloidoses. Therapies targeting amyloid properties may benefit both conditions, suggesting shared pathways in disease progression.
Area of Science:
- Neuroscience
- Endocrinology
- Pathology
Background:
- Type 2 diabetes (T2DM) and Alzheimer's disease (AD) are leading causes of morbidity and mortality in the elderly.
- Both diseases share clinical and biochemical features, suggesting common underlying pathogenic mechanisms.
Purpose of the Study:
- To explore the link between T2DM and AD, focusing on shared amyloidogenic pathways.
- To discuss the potential for therapies targeting amyloid properties to benefit both conditions.
Main Methods:
- Review of epidemiological studies linking T2DM and AD.
- Analysis of shared biochemical and clinical features, particularly protein aggregation (amyloidosis).
- Discussion of common pathogenic mechanisms and therapeutic strategies.
Main Results:
- Both T2DM (amylin aggregation in pancreatic islets) and AD (beta-amyloid and NFTs in the brain) are characterized by fibrillar protein aggregates (amyloidoses).
- Amylin aggregation is linked to pancreatic beta-cell loss, while Abeta and NFT formation are associated with neuronal cell loss.
- Shared toxicity mechanisms and pathocascade components are proposed for amylin and Abeta.
Conclusions:
- Amylin and Abeta may exert toxicity through similar mechanisms.
- Therapies targeting amyloidogenic properties could be beneficial for both T2DM and AD.
- Understanding shared pathways offers new therapeutic avenues for age-related diseases.
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