Medroxyprogesterone

Medroxyprogesterone (MP), is a progestin which is not used medically.[1][2][3][4] A derivative, medroxyprogesterone acetate (MPA), is used as a medication in humans, and is far more widely known in comparison.[5] Medroxyprogesterone is sometimes used as a synonym for medroxyprogesterone acetate,[5] and what is almost always being referred to when the term is used is MPA and not medroxyprogesterone.[6]

This article is about a non-clinically used progestin compound. For the pharmaceutical drug, see medroxyprogesterone acetate.
Medroxyprogesterone
Clinical data
Other namesMP; Methylhydroxyprogesterone; 6α-Methyl-17α-hydroxyprogesterone; 6α-Methyl-17α-hydroxypregn-4-en-3,20-dione
Drug classProgestin; Progestogen
ATC code
  • None
Identifiers
CAS Number
PubChem CID
ChemSpider
UNII
CompTox Dashboard (EPA)
ECHA InfoCard100.007.545
Chemical and physical data
FormulaC22H32O3
Molar mass344.495 g·mol−1
3D model (JSmol)

Pharmacology

Pharmacodynamics

Compared to MPA, medroxyprogesterone is over two orders of magnitude less potent as a progestogen.[7] Medroxyprogesterone is also notable in that it is a minor metabolite of MPA.[8] In addition to its progestagenic activity, medroxyprogesterone is a weak antiandrogen in vitro on human androgen receptor.[9]

MP and related steroids at the PR (nM)[7]
CompoundKiEC50aEC50b
Progesterone4.30.925
Medroxyprogesterone2414732
Medroxyprogesterone acetate1.20.60.15
Values are nM. a = Coactivator recruitment. b = Reporter cell line.

Chemistry
See also: List of progestogens

Medroxyprogesterone, also known as 6α-methyl-17α-hydroxyprogesterone or as 6α-methyl-17α-hydroxypregn-4-en-3,20-dione, is a synthetic pregnane steroid and a derivative of progesterone.[1][2] It is specifically a derivative of 17α-hydroxyprogesterone with a methyl group at the C6α position.[1][2] The generic name of medroxyprogesterone is a contraction of 6α-methyl-17α-hydroxyprogesterone. It is closely related to medrogestone as well as other unesterified 17α-hydroxyprogesterone derivatives such as chlormadinone, cyproterone, and megestrol.[1][2]

Society and culture

Generic names

Medroxyprogesterone is the generic name of the drug and its INN and BAN.[1][2][4]

References
  1. Elks J (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 657–. ISBN 978-1-4757-2085-3.
  2. Index Nominum 2000: International Drug Directory. Taylor & Francis. 2000. pp. 638–. ISBN 978-3-88763-075-1.
  3. Morton IK, Hall JM (31 October 1999). Concise Dictionary of Pharmacological Agents: Properties and Synonyms. Springer Science & Business Media. pp. 173–. ISBN 978-0-7514-0499-9.
  4. "Medroxyprogesterone".
  5. "MedroxyPROGESTERone: Drug Information Provided by Lexi-Comp". Merck Manual. 2009-12-01. Retrieved 2010-07-08.
  6. Lenco W, Mcknight M, Macdonald AS (January 1975). "Effects of cortisone acetate, methylprednisolone and medroxyprogesterone on wound contracture and epithelization in rabbits". Annals of Surgery. 181 (1): 67–73. doi:10.1097/00000658-197501000-00015. PMC 1343717. PMID 1119869.
  7. Pullen MA, Laping N, Edwards R, Bray J (September 2006). "Determination of conformational changes in the progesterone receptor using ELISA-like assays". Steroids. 71 (9): 792–8. doi:10.1016/j.steroids.2006.05.009. PMID 16784762. S2CID 24703323.
  8. Ishihara M, Kirdani Y, Osawa Y, Sandberg AA (January 1976). "The metabolic fate of medroxyprogesterone acetate in the baboon". Journal of Steroid Biochemistry. 7 (1): 65–70. doi:10.1016/0022-4731(76)90167-9. PMID 1271819.
  9. Šauer P, Bořík A, Golovko O, Grabic R, Staňová AV, Valentová O, et al. (November 2018). "Do progestins contribute to (anti-)androgenic activities in aquatic environments?". Environmental Pollution. 242 (Pt A): 417–425. doi:10.1016/j.envpol.2018.06.104. PMID 29990947.
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