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20β-Dihydroprogesterone (20β-DHP), also known as 20β-hydroxyprogesterone (20β-OHP), is an endogenous metabolite of progesterone which is formed by 20β-hydroxysteroid dehydrogenase (20β-HSD). [1] It is a progestogen similarly to progesterone, with about 20 to 50% of the progestogenic activity of progesterone.
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.
Progesterone is used as part of hormone replacement therapy in people who have low progesterone levels, and for other reasons. For purposes of comparison with normal physiological circumstances, luteal phase levels of progesterone are 4 to 30 ng/mL, while follicular phase levels of progesterone are 0.02 to 0.9 ng/mL, menopausal levels are 0.03 to 0.3 ng/mL, and levels of progesterone in men ...
Progesterone is metabolized by 5α-and 5β-reductases, 3α-and 3β-hydroxysteroid dehydrogenases, and 20α-and 20β-hydroxysteroid dehydrogenase in various tissues. [23] [115] In target tissues, particularly the cervix and myometrium, these enzymes regulate local progesterone concentrations and can activate or inactivate progesterone signaling ...
The best time to take any vitamin is the time when you will remember, says Gans. ... (NIH), the average adult’s daily value (DV) of vitamin D is 15 mcg (600 IU, or international unit). “Note ...
The best way to store vitamins for optimal shelf-life Elements like heat, humidity, light, and air are the “main enemies of vitamin freshness,” says Blatner. “Keep them cool, dry, and out of ...
MADISON, Wis. — A 15-year-old girl who police say killed two people and wounded multiple others at a private Christian school in Wisconsin endured what appeared to be a tumultuous home life ...
Battery balancing and battery redistribution refer to techniques that improve the available capacity of a battery pack with multiple cells (usually in series) and increase each cell's longevity. [1] A battery balancer or battery regulator is an electrical device in a battery pack that performs battery balancing. [ 2 ]