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    Medroxyprogesterone acetate
    Medroxyprogesterone acetate

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    This product is for research use only, not for human use. We do not sell to patients.
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    InvivoChem Cat #: V1741
    CAS #: 71-58-9 Purity ≥98%

    Description: Medroxyprogesterone acetate (formerly NSC26386; NSC 26386; Medroxyprogesterone 17-acetate; MPA), the 17-ester form of Medroxyprogesterone, is a steroidal progestin and a synthetic variant of the human hormone progesterone. It is commonly used as a contraceptive, in hormone replacement therapy and for the treatment of endometriosis. Medroxyprogesterone acetate  inhibits the enzyme 3-hydroxyste-roid dehydrogenase, involved in the reversible conversion between 5alpha-dihydroprogesterone and 3alpha, 5alpha-tetrahydroprogesterone.

    References: J Neurobiol. 2006 Aug;66(9):916-28; Thyroid. 2003;13(3):249-58; Neurobiol Learn Mem. 2010;93(3):444-53. 

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    • 香港大学
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    Molecular Weight (MW)386.52 
    CAS No.71-58-9 
    Storage-20℃ for 3 years in powder form
    -80℃ for 2 years in solvent
    Solubility (In vitro)DMSO: 12 mg/mL (31.0 mM) 
    Water: <1 mg/mL
    Ethanol: 12 mg/mL warmed (31.0 mM) 
    Other info

    Chemical Name: (6S,8R,9S,10R,13S,14S,17R)-17-acetyl-6,10,13-trimethyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate


    InChi Code: InChI=1S/C24H34O4/c1-14-12-18-19(22(4)9-6-17(27)13-21(14)22)7-10-23(5)20(18)8-11-24(23,15(2)25)28-16(3)26/h13-14,18-20H,6-12H2,1-5H3/t14-,18+,19-,20-,22+,23-,24-/m0/s1

    SMILES Code: CC([[email protected]@]1(OC(C)=O)CC[[email protected]@]2([H])[[email protected]]3([H])C[[email protected]](C)C4=CC(CC[[email protected]]4(C)[[email protected]@]3([H])CC[[email protected]]12C)=O)=O

    SynonymsNSC-26386; Medroxyprogesterone Acetate; NSC26386; NSC 26386; MPA.

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    In Vitro

    In vitro activity: Medroxyprogesterone acetate (MPA) inhibits the enzyme 3-hydroxyste-roid dehydrogenase, involved in the reversible conversion between 5alpha-dihydroprogesterone (DHP) and 3alpha, 5alpha-tetrahydroprogesterone (THP), and therefore may affect the local actions of DHP and THP in the brain. Medroxyprogesterone acetate (MPA) reduces secretion of IL-6 and PTHrP from human breast cancer cells. MPA dose-dependently decreases the secretion and mRNA expression of IL-6 and PTHrP in the KTC-2 cells. Medroxyprogesterone acetate (MPA) and dexamethasone dose dependently increases alpha-ENaC promoter-driven luciferase activity in M-1 cells, which is not inhibited by Org31710, indicating that Medroxyprogesterone acetate regulates alpha-ENaC in a PR-independent manner. Medroxyprogesterone acetate and dexamethasone, but not progesterone, dose dependently increases alpha-ENaC and sgk1 mRNA in M-1 and in Madin-Darby canine kidney-C7 cells, both collecting duct cell lines. Medroxyprogesterone acetate (MPA) (0.1 nM) significantly enhances the in vitro production of specific immunoglobulin G (IgG) antibodies, an effect that appears to involve the interaction of the progestin with PRG receptors.

    In VivoMedroxyprogesterone acetate (MPA) impairs delayed memory retention on the water radial-arm maze (WRAM), and exacerbates overnight forgetting on the Morris maze (MM) in aged ovariectomized (OVX) rats. Medroxyprogesterone acetate (MPA) significantly and progesterone marginally decreases GAD levels in the hippocampus, and both MPA and progesterone significantly increases GAD levels in the entorhinal cortex.  
    Animal modelRats
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    J Neurobiol. 2006 Aug;66(9):916-28; Thyroid. 2003 Mar;13(3):249-58; Neurobiol Learn Mem. 2010 Mar;93(3):444-53.  

    These protocols are for reference only. InvivoChem does not independently validate these methods.


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