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Qualitative changes in immunocompetent cells with age: reduced sensitivity to cortisone acetate
Mechanisms of Ageing and Development
|September 1, 1977
Summary
Immune cells responding to antigens differ between young and old mice. Young mice have cortisone-sensitive lymphocytes, while old mice have cortisone-resistant lymphocytes, suggesting distinct immune cell populations with age.
Area of Science:
- Immunology
- Aging Research
Background:
- Studies suggest age-related differences in immune cell responses to antigens.
- The specific cell types involved in primary immune responses in young versus old mice remain unclear.
Purpose of the Study:
- To investigate age-related differences in immunocompetent cells by assessing cortisone acetate sensitivity.
- To test the hypothesis that distinct cell populations mediate immune responses in young and old mice.
Main Methods:
- Lymph node lymphocytes from young and old mice were isolated.
- The sensitivity of antigen-reactive lymphocytes to cortisone acetate was determined.
Main Results:
- Antigen-reactive lymphocytes from young mouse donors were found to be sensitive to cortisone acetate.
- Antigen-reactive lymphocytes from old mouse donors exhibited resistance to cortisone acetate.
Conclusions:
- The findings support the hypothesis of age-dependent differences in immune cell populations.
- Cortisone acetate sensitivity can distinguish between antigen-reactive lymphocytes of young and old mice, indicating distinct cellular mechanisms in immune aging.