Amitriptyline Improves Memory in Alzheimer's Mice
Author Information
Author(s): Chadwick Wayne, Mitchell Nick, Caroll Jenna, Zhou Yu, Park Sung-Soo, Wang Liyun, Becker Kevin G., Zhang Yongqing, Lehrmann Elin, Wood William H. III, Martin Bronwen, Maudsley Stuart
Primary Institution: National Institute on Aging, National Institutes of Health, Baltimore, Maryland, United States of America
Hypothesis
Can amitriptyline enhance cognitive function in aged 3×Tg Alzheimer's disease mice?
Conclusion
Amitriptyline treatment significantly improved memory and cognitive function in aged 3×TgAD mice.
Supporting Evidence
- Amitriptyline treatment improved both long- and short-term memory retention in mice.
- Neurogenesis was significantly increased in the dentate gyrus of treated mice.
- Amitriptyline reduced levels of toxic amyloid beta dimers in the brain.
- Significant increases in neurosynaptic marker proteins were observed after treatment.
- Behavioral tests showed that treated mice remembered the location of a hidden platform better than controls.
Takeaway
Amitriptyline, a common antidepressant, helped older mice with Alzheimer's remember things better.
Methodology
Aged 3×TgAD mice were treated with amitriptyline for 4 months, followed by cognitive behavior testing and analysis of brain tissue.
Potential Biases
Potential bias in behavioral testing due to the subjective nature of some assessments.
Limitations
The study was conducted on a specific mouse model, which may not fully represent human Alzheimer's disease.
Participant Demographics
Aged male 3×TgAD mice, 14 months old.
Statistical Information
P-Value
p=0.00098
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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