Epipregnanolone
Epipregnanolone, also known as 3β-hydroxy-5β-pregnan-20-one, is a neurosteroid that is produced in the human body. It is a metabolite of the hormone progesterone, and is particularly active in the brain and nervous system.
Production and Metabolism[edit | edit source]
Epipregnanolone is produced in the body from progesterone through the actions of two enzymes: 5α-reductase and 3α-hydroxysteroid dehydrogenase. It can also be produced from allopregnanolone through the action of the enzyme 3β-hydroxysteroid dehydrogenase.
Biological Activity[edit | edit source]
Epipregnanolone is a potent negative allosteric modulator of the GABAA receptor, which means it reduces the activity of this receptor. This is in contrast to most other neurosteroids, which are positive allosteric modulators of the GABAA receptor.
Clinical Significance[edit | edit source]
Due to its activity at the GABAA receptor, epipregnanolone has been investigated for potential use in a number of medical conditions, including epilepsy, anxiety disorders, and depression. However, more research is needed to fully understand its effects and potential uses in medicine.
See Also[edit | edit source]
- Neurosteroid
- Progesterone
- GABAA receptor
- 5α-reductase
- 3α-hydroxysteroid dehydrogenase
- 3β-hydroxysteroid dehydrogenase
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