Androsin
Androsin has antiasthmatic effects , it can prevent allergen- and platelet-activating factor (PAF)-induced bronchial obstruction (10 mg/kg orally; 0.5 mg inhalative).
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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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Int Arch Allergy Appl Immunol. 1991;95(2-3):128-33.
Antiasthmatic effects of Picrorhiza kurroa: androsin prevents allergen- and PAF-induced bronchial obstruction in guinea pigs.[Pubmed:
1718906]
METHODS AND RESULTS:
In the Ayurvedic medicine, Picrorhiza kurroa Royle ex Benth. is used for the treatment of liver and lung diseases. Using different chemical and pharmacological methods, we could identify the phenol glycoside Androsin as active compound preventing allergen and platelet-activating factor induced bronchial obstruction in guinea pigs in vivo (10 mg/kg p.o.; 1 h prior to the inhalation challenge).
CONCLUSIONS:
Histamine release from human polymorphonuclear leukocytes in vitro was inhibited by other compounds yet to be identified.
Zhongguo Zhong Yao Za Zhi. 2014 Mar;39(5):846-50.
Chemical constituents from rhizomes of Iris germanica.[Pubmed:
25204177]
METHODS AND RESULTS:
Twenty-one compounds were isolated from the rhizomes of Iris germanica by various chromatographic techniques such as silica gel, ODS and Sephadex LH-20 chromatography. Their structures were established on basis of physical properties, MS and NMR spectroscopic data Their structures were identified as ombuin (1), 5, 3, 3'-trihydroxy-7, 4'-dimethoxyflavanone (2), naringenin (3), cirsiliol-4'-glucoside (4), 3beta, 4'-dihydroxy-7,3'-dimethoxyflavonone-5-O-beta-D-glucopyranoside (5), genistein (6), irilin D (7), muningin (8), 5, 7, 4'-trihydroxy-6, 3', 5'-trimethoxyisoflavone (9), tectorigenin (10), irigenin (11), tectoridin (12), iridin (13), mangiferin (14), irisxanthone (15), pyroglutamic acid (16), 2, 4', 6-trihydroxy-4-methoxybenzophenone-2-O-beta-D-glucoside (17), apocynin (18), Androsin (19), beta-sitosterol (20), and daucosterol (21).
CONCLUSIONS:
Among them, compounds 1-9, 16, 17 were obtained from this plant for the first time, compounds 8 and 9 were separated from Iris species for the first time, compounds 1, 4, and 17 were obtained from the family for the first time.
