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Anti-progesterones: background and clinical physiology
Bailliere'S Clinical Obstetrics and Gynaecology
|September 1, 1988
Summary
Anti-progesterone medications, like mifepristone, are crucial tools for understanding progesterone's role in the menstrual cycle and pregnancy. These agents impact endometrial receptors and hormone levels, with clinical uses in pregnancy interruption.
Area of Science:
- Reproductive endocrinology
- Pharmacology
Background:
- Progesterone is vital for normal reproductive cycles and pregnancy maintenance.
- Anti-progesterone agents offer a means to investigate progesterone's physiological functions.
Purpose of the Study:
- To explore the mechanisms of action of anti-progesterone drugs.
- To review the clinical applications of these agents, particularly in pregnancy interruption.
Main Methods:
- Utilizing anti-progesterone agents as pharmacological tools.
- Examining effects on endometrial progesterone receptors.
- Assessing central effects on gonadotrophin concentrations.
- Investigating impacts on ovarian steroidogenesis.
Main Results:
- Mifepristone acts directly on endometrial progesterone receptors.
- Mifepristone reduces circulating gonadotrophin levels.
- Ovarian steroidogenesis can be modulated by these agents.
Conclusions:
- Anti-progesterone drugs, exemplified by mifepristone, are valuable for studying progesterone's roles.
- These agents have significant clinical applications in managing pregnancy.