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Animal models of age-related dementia: neurobehavioral dysfunctions in autoimmune mice
1Department of Pharmacology, Texas College of Osteopathic Medicine, Fort Worth 76107.
Abstract:
The development of strategies for treatment of Alzheimer's disease and other age-associated dementias is an important goal of research in the neurosciences. It is suggested that advances in understanding of the etiology of those disorders would provide the most obvious avenues to development of preventative treatments. Research findings from both clinical investigations and studies of animal models are presented which suggest a neuroimmunologic component in age-associated dementia. Clinical studies suggest an association between dementia and brain-reactive autoantibodies in subsets of patients with Alzheimer's disease. Studies of mice suggest that: 1) when compared with normal genotypes, mutant mice with accelerated autoimmunity show learning and memory impairments at earlier chronological ages; 2) the learning and memory deficits of autoimmune and normal mice are qualitatively similar; 3) the behavioral deficits of normal aged and autoimmune mice are sensitive to similar pharmacologic interventions. Overall, these findings suggest that intervention strategies targeting the immune system might be useful in the treatment or prevention of aging-associated dementia. Autoimmune mice would be useful as models for the development and testing of such immune-based interventions.
Insights
Neuroinflammation may play a role in age-associated dementias like Alzheimer's disease. Targeting the immune system could offer new treatment strategies for dementia prevention and care.
Area of Science:
- Neuroscience
- Immunology
Background:
- Alzheimer's disease and other age-associated dementias are significant research challenges.
- Understanding the etiology of these disorders is crucial for developing preventative treatments.
Purpose of the Study:
- To investigate the potential neuroimmunologic component in age-associated dementia.
- To explore the utility of autoimmune mouse models for studying dementia.
Main Methods:
- Clinical studies examining brain-reactive autoantibodies in Alzheimer's disease patients.
- Studies using genetically modified mice with accelerated autoimmunity and normal aged mice.
Main Results:
- Clinical findings suggest a link between dementia and autoantibodies in some Alzheimer's patients.
- Autoimmune mice exhibited learning and memory impairments earlier than normal mice.
- Behavioral deficits in both autoimmune and normal mice responded to similar pharmacological interventions.
Conclusions:
- Neuroinflammation appears to be a significant factor in age-associated dementia.
- Targeting the immune system presents a promising avenue for dementia treatment and prevention.
- Autoimmune mouse models are valuable for developing and testing immune-based dementia interventions.