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Estrogen replacement therapy and the mixed lymphocyte reaction
American Journal of Obstetrics and Gynecology
|October 15, 1981
Summary
Estrogen replacement therapy in postmenopausal women can alter immune responses. Studies show it inhibits mixed lymphocyte reactions and increases immunosuppressive factors, suggesting a direct effect on immune cells.
Area of Science:
- Immunology
- Endocrinology
- Pharmacology
Background:
- Postmenopausal women undergoing estrogen replacement therapy (ERT) may experience changes in immune function.
- Estrogen's role in modulating immune responses is a significant area of research.
Purpose of the Study:
- To investigate the effects of various estrogens on immune reactivity in postmenopausal women.
- To determine if ERT influences specific immunosuppressive serum factors and lymphocyte function.
Main Methods:
- A 6-month study involving 58 postmenopausal women receiving different types of estrogens.
- Serum samples were analyzed for immunosuppressive factors and their effect on the mixed lymphocyte reaction (MLR).
Main Results:
- Estrogen treatment demonstrated a dose-dependent inhibition of the mixed lymphocyte reaction.
- Mean levels of serum cortisol and pregnancy zone protein increased during ERT.
- No direct correlation was found between individual immunosuppressive factor levels and reduced lymphocyte reactivity.
Conclusions:
- Estrogen replacement therapy appears to directly impact immune cells, leading to altered immune reactivity.
- The observed immunosuppression during ERT warrants further investigation into its clinical implications.