Methylnissolin
Methylnissolin is a natural product from A. membranaceus.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Arch Pharm Res. 2014 Feb;37(2):186-92.
Flavonoids from Astragalus membranaceus and their inhibitory effects on LPS-stimulated pro-inflammatory cytokine production in bone marrow-derived dendritic cells.[Pubmed:
23771500 ]
Radix Astragali (Astragalus membranaceus) is an important traditional Chinese medicine that is widely used as a tonic to enhance the body's natural defense mechanisms.
METHODS AND RESULTS:
In this phytochemical study, 12 flavonoids, isoliquiritigenin (1), liquiritigenin (2), calycosin (3), calycosin 7-O-β-D-glucoside (4), formononetin (5), formononetin 7-O-β-D-glucoside (6), daidzein (7), daidzein 7-O-β-D-glucoside (8), Methylnissolin (9), Methylnissolin 3-O-β-D-glucoside (10), isomucronulatol (11), and isomucronulatol 7-O-β-D-glucoside (12), were isolated from the roots of A. membranaceus. Their structures were elucidated by comparing spectroscopic data with reported values. The effects of the isolated compounds on lipopolysaccharide (LPS)-stimulated bone marrow-derived dendritic cells were investigated. Compounds 1 and 2 exhibited significant inhibitory effects on LPS-induced IL-6 and IL-12 p40 production, with IC50 values ranging from 2.7 to 6.1 μM. Compound 1 also showed a moderate inhibitory effect on LPS-stimulated production of TNF-α with an IC50 value of 20.1 μM.
CONCLUSIONS:
Further studies of the potential anti-inflammatory effects and benefits of flavonoids from A. membranaceus are warranted.
