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13 rezultatus
Isolation of high-purity casticin from Artemisia annua L. by high-speed counter-current chromatography.
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Following an initial clean-up step on silica, high-speed counter-current chromatography (HSCCC) was used to purify a flavone, casticin (5,3'-dihydroxy-3,6,7, 4'-tetramethoxyflavone), from an extract of the dried leaves of Artemisia annua L. The two-phase solvent system used was composed of
The flavonoids casticin and artemetin are poorly extracted and are unstable in an Artemisia annua tea infusion.
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A number of flavonoids including casticin and artemetin from Artemisia annua have shown synergism with artemisinin against Plasmodium falciparum, but it is unclear if the flavonoids are also extracted into a tea infusion of the plant. Using a tea infusion preparation protocol that was reported to be
Flavonoids casticin and chrysosplenol D from Artemisia annua L. inhibit inflammation in vitro and in vivo.
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BACKGROUND
The aim of our experiments was to investigate the anti-inflammatory properties of casticin and chrysosplenol D, two flavonoids present in Artemisia annua L.
METHODS
Topical inflammation was induced in ICR mice using croton oil. Mice were then treated with casticin or chrysosplenol D.
[Chemical constituents from Artemisia annua].
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OBJECTIVE
To investigate the chemical constituents of dried whole plants of Artemisia annua.
METHODS
The chemical constituents were isolated by repeated silica gel chromatography, medium pressure column chromatography, and semi-preparative HPLC, and their structures were elucidated by spectroscopic
Characteristics, clinical effect profile and tolerability of a nasal spray preparation of Artemisia abrotanum L. for allergic rhinitis.
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A nasal spray formulation containing an extract of Artemisia abrotanum L. was developed for therapeutic use in patients with allergic rhinitis and other upper airway disorders. The nasal spray preparation used contains a mixture of essential oils (4 mg/ml) and flavonols (2.5 microg/ml), of which
Bioassay-Guided Chromatographic Isolation and Identification of Antibacterial Compounds from Artemisia annua L. That Inhibit Clostridium perfringens Growth.
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Clostridium perfringens is the causative agent of necrotic enteritis leading to significant losses in the poultry industry. Dichloromethane and n-hexane extracts of aerial parts of Artemisia annua (Asteraceae) exhibited activity against C. perfringens with minimum inhibitory concentrations (MIC) of
Chrysosplenol d, a Flavonol from Artemisia annua, Induces ERK1/2-Mediated Apoptosis in Triple Negative Human Breast Cancer Cells
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Triple negative human breast cancer (TNBC) is an aggressive cancer subtype with poor prognosis. Besides the better-known artemisinin, Artemisia annua L. contains numerous active compounds not well-studied yet. High-performance liquid chromatography coupled with diode-array and mass
Antiprotozoal Effect of Artemisia indica Extracts and Essential Oil.
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Diverse solvent extracts of Artemisia indica leaves originating from the West Bengal region (India) were assessed for the content of artemisinin and characteristic Artemisia polymethoxyflavonoids, namely eupatin (1), casticin (2), chrysoplenetin (3), cirsilineol (4), chrysophenol-D (5), and
Potentiation of the antimalarial activity of qinghaosu by methoxylated flavones.
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Interaction between the flavones casticin and artemetin and the antimalarial activity of chloroquine and qinghaosu (QHS) was examined using an in vitro growth assay based on [3H]hypoxanthine incorporation in synchronized cultures of a cloned line of Plasmodium falciparum. Casticin, and to a lesser
Effects of sesquiterpene, flavonoid and coumarin types of compounds from Artemisia annua L. on production of mediators of angiogenesis.
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BACKGROUND
In addition to recognized antimalarial effects, Artemisia annua L. (Qinghao) possesses anticancer properties. The underlying mechanisms of this activity are unknown. The aim of our experiments was to investigate the effects of distinct types of compounds isolated from A. annua on the
Phytochemical analysis and geographic assessment of flavonoids, coumarins and sesquiterpenes in Artemisia annua L. based on HPLC-DAD quantification and LC-ESI-QTOF-MS/MS confirmation.
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To evaluate the quality of Artemisia annua L., an accurate HPLC-DAD method has been developed, validated and applied to the simultaneous quantification of five flavonoids, two coumarins and four sesquiterpenes. An LC-ESI-QTOF-MS/MS confirmation method has been utilized to avoid false-positive
Antitumor activity of an Artemisia annua herbal preparation and identification of active ingredients.
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[Chemical constituents from ethyl acetate extract of Artemisia rupestris].
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Chemical constituents of ethyl acetate extract of Artemisia rupestris were isolated and purified by various chromatographic methods, including silica gel, ODS and Sephadex LH-20. Their structures were elucidated on the basis of spectroscopic data analysis. 12 compounds were separated from A.
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