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A monogenic senility syndrome segregating with longevity in mice
D D Adams1, J D Adams, W O Lucas
1Dean's Department, University of Otago Medical School, Dunedin, New Zealand.
Mechanisms of Ageing and Development
|April 1, 1993
Summary
A novel neurological syndrome in aging CBA mice, characterized by hyperactivity and weight loss, suggests a genetic basis. This condition, potentially linked to neurodegeneration, offers an animal model for studying aging and Alzheimer's disease mechanisms.
Area of Science:
- Neuroscience
- Genetics
- Gerontology
Background:
- Aging in CBA T6/T6 mice is associated with a specific syndrome.
- This syndrome includes hyperactivity, weight loss, and in males, priapism, indicating a neurogenic origin.
Purpose of the Study:
- To investigate the genetic basis and underlying mechanisms of the observed neurological syndrome in aging mice.
- To establish a potential animal model for studying age-related neurological disorders.
Main Methods:
- Observation of CBA T6/T6 mice and their hybrids with NZW and C57 BL/6 strains.
- Phenotypic analysis including hyperactivity, weight changes, and priapism.
- Genetic segregation analysis in F2 hybrids.
Main Results:
- The syndrome manifests around 2 years of age in CBA mice, with a 25% frequency in specific F2 hybrids, suggesting single gene or gene cluster involvement.
- A 34-week delay in syndrome onset was observed in F1 hybrids, indicating genetic modulation.
- In NZW F2 hybrids, the syndrome segregates with longevity (P < 0.001).
Conclusions:
- The syndrome is likely genetically mediated and serves as a valuable animal model for aging research.
- It provides a platform for investigating the relationship between aging mechanisms and senile neuropathies like Alzheimer's disease.