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Pregnanolone, also known as 3α,5β-tetrahydroprogesterone (3α,5β-THP) or as 5β-pregnan-3α-ol-20-one, is a naturally occurring pregnane steroid and a derivative of progesterone. Related compounds include allopregnanolone (3α,5α-THP; brexanolone), epipregnanolone (3β,5β-THP), hydroxydione , isopregnanolone (3β,5α-THP), and renanolone .
Progesterone is the entry into the Δ 4 pathway, resulting in production of 17α-hydroxyprogesterone and androstenedione, precursor to testosterone and estrone. Aldosterone and corticosteroids are also derived from progesterone or its derivatives. Pregnenolone can be converted to 17α-hydroxypregnenolone by the enzyme 17α-hydroxylase .
Progesterone is the major progestogen produced by the corpus luteum of the ovary in all mammalian species. Luteal cells possess the necessary enzymes to convert cholesterol to pregnenolone, which is subsequently converted into progesterone. Progesterone is highest in the diestrus phase of the estrous cycle.
As a result, there has been some interest in using oral progesterone to treat catamenial epilepsy, [64] as well as other menstrual cycle-related and neurosteroid-associated conditions. In addition to oral progesterone, oral pregnenolone has also been found to act as a prodrug of allopregnanolone, [65] [66] [67] though also of pregnenolone ...
Pricing for progesterone can vary depending location, insurance coverage, discount coupons, quantity, shortages, manufacturers, brand or generic versions, different pharmacies, and so on. As of currently, 30 capsules of 100 mg of the generic version, Prometrium, from CVS Pharmacy is around $40 without any discounts or insurance applied.
A selective progesterone receptor modulator (SPRM) is an agent that acts on the progesterone receptor (PR), the biological target of progestogens like progesterone.A characteristic that distinguishes such substances from full receptor agonists (e.g., progesterone, progestins) and full antagonists (e.g., aglepristone) is that their action differs in different tissues, i.e. agonist in some ...
Progesterone (P4), sold under the brand name Prometrium among others, is a medication and naturally occurring steroid hormone. [20] It is a progestogen and is used in combination with estrogens mainly in hormone therapy for menopausal symptoms and low sex hormone levels in women.
5α-Pregnan-17α-ol-3,20-dione (17-OH-DHP) is a progestogen, i.e., it binds to the progesterone receptors. However, 17-OH-DHP is better studied as a metabolic intermediate than a progestogen per se.