byakangelicol/angelica dahurica

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Byakangelicol, isolated from Angelica dahurica, inhibits both the activity and induction of cyclooxygenase-2 in human pulmonary epithelial cells.

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We examined the inhibitory mechanism of byakangelicol, isolated from Angelica dahurica, on interleukin-1beta (IL-1beta)-induced cyclooxygenase-2 (COX-2) expression and prostaglandin E2 (PGE2) release in human pulmonary epithelial cell line (A549). Byakangelicol (10-50 microM)

Furocoumarins from Angelica dahurica with hepatoprotective activity on tacrine-induced cytotoxicity in Hep G2 cells.

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Fractionation of the MeOH extract of Angelica dahurica Benth et Hook resulted in the isolation of six furocoumarins, imperatorin (1), isoimperatorin (2), (+/-)-byakangelicol (3), (+)-oxypeucedanin (4), (+)-byakangelicin (5), and (+)-aviprin (6). Among these, compounds 1 and 5 exhibited strong

beta-secretase inhibitory effects of furanocoumarins from the root of Angelica dahurica.

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In the course of screening antidementia agents from natural products, five beta-secretase (BACE1) inhibitors were isolated from the root extract of Angelica dahurica (Umbelliferae). They were identified as furanocoumarins, isoimperatorin (1), imperatorin (2), (+)-oxypeucedanin (3), (+)-byakangelicol

Rapid identification of furanocoumarins in Angelica dahurica using the online LC-MMR-MS and their nitric oxide inhibitory activity in RAW 264.7 cells.

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BACKGROUND Angelica dahurica (Fisch. Ex hoffm.) Benth. Et Hook. is a perennial herb that grows throughout Korea whose dried roots have been used to treat various diseases in Korean traditional medicine. The root extract contains diverse constituents, and it is necessary to determine the active

Antiproliferative effect of furanocoumarins from the root of Angelica dahurica on cultured human tumor cell lines.

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A bioassay-guided fractionation of the root extract of Angelica dahurica (Umbelliferae) led to the isolation of six furanocoumarins as active ingredients responsible for the antitumoral property. The hexane soluble part of the extract demonstrated a significant inhibition on the proliferation of

Coumarins from the roots of Angelica dahurica cause anti-allergic inflammation.

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Allergic inflammation is induced by allergens and leads to various allergic diseases, including rhinitis, asthma and conjunctivitis. Histamine is important in the pathogenesis of an immunoglobulin E-dependent allergic reaction and results in the secretion of cytokines associated with inflammation.

Chemometric classification of morphologically similar Umbelliferae medicinal herbs by DART-TOF-MS fingerprint.

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BACKGROUND It needs many years of special training to gain expertise on the organoleptic classification of botanical raw materials and, even for those experts, discrimination among Umbelliferae medicinal herbs remains an intricate challenge due to their morphological similarity. OBJECTIVE To develop

[Fragmentation pathways of five furocoumarine using line ion trap with orbitrapmass spectrometry].

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OBJECTIVE The multiple levels fragmentations of five furocoumarine (psoralen, xanthotoxin, bergapten, oxypeucedanin, and byakangelicol) in Angelica dahurica have been demonstrated using LTQ-Orbitrap mass spectrometry with high resolution and high mass accuracy to discover the possible,fragmentation

Characterisation of the furanocoumarin phellopterin as a rat brain benzodiazepine receptor partial agonist in vitro.

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Phellopterin, a naturally occurring furanocoumarin found in the roots of Angelica dahurica, inhibits [3H]diazepam and ethyl 8-fluoro-5,6-dihydro-5-methyl-6-oxo-4H-imidazo[1,5-a][1,4] benzodiazepine-3-carboxylate ([3H]Ro 15-1788) binding to the benzodiazepine site of the rat brain gamma-aminobutyric

Separation of chemical constituents from three plant medicines by counter-current chromatography using a three-phase solvent system at a novel ratio.

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A solvent system of n-hexane, methyl acetate, acetonitrile, and water at a novel volume ratio of 4:3:4:4 forms three layers, i.e. upper phase (UP), middle phase (MP), and lower phase (LP), with a volume ratio of 1:1.20:1.42 at room temperature (25°C). All three two-phases from this three-phase

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