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oridonin/isodon rubescens
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Pagina 1 a partire dal 159 risultati
[Determination of oridonin and rosemarinic acid in Rabdosia rubescens by HPLC].
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OBJECTIVE
To establish the method for determining the content of oridonin and rosemarinic acid in Rabdosia rubescens by HPLC.
METHODS
Using ODS-C18 column (150 mm x 4.6 mm, 5 microm), methanol-0.3% phosphoric acid (40:60), oridonin detection wavelength at 238 nm and rosemarinic acid at 329
[Determination of oridonin in Rabdosia rubescens by TLC-scanning method].
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We have determingd the content of oridonin in Rabdosia rubescens Hemsl by TLC-scenning method. This method is proved to be simple, fast, precise and sensitive, and the result is stable, repetition property is good. Its rate of recovery is as high as 98.03 percent.
Isolation and purification of oridonin from the whole plant of Isodon rubescens by high-speed counter-current chromatography.
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Semi-preparative high-speed counter-current chromatography (HSCCC) was successfully used for isolation and purification of oridonin from Isodon rubescens by using a two-phase-solvent system composed of n-hexane-ethyl acetate-methanol-water (2.8:5:2.8:5, v/v/v/v). The targeted compound isolated,
Isolation and purification of oridonin from Rabdosia rubescens using upright counter-current chromatography.
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A preparative counter-current chromatography (CCC) method for isolation and purification of oridonin, a new cancer chemoprevention agent, from the Chinese medicinal plant Rabdosia rubescens was successfully established. The crude oridonin was obtained by elution with a light petroleum/acetone
Ponicidin and oridonin are responsible for the antiangiogenic activity of Rabdosia rubescens, a constituent of the herbal supplement PC SPES.
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Antiangiogenic activity has been identified in an aqueous EtOH extract of Rabdosia rubescens, a component of the dietary supplement PC SPES. Bioassay-guided fractionation using a novel in vitro human endothelial cell-based assay for angiogenesis afforded the diterpenoids ponicidin (1) and oridonin
[Simultaneous determination of rosmarinic acid, oridonin and chrysoplenetin in Isodon rubescens by HPLC].
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An HPLC method was developed for simultaneous quantitation of rosmarinic acid, oridonin and chrysoplenetin in the aerial parts of Isodon rubescens. Samples were analyzed on an Ultimate C18 column (4.6 mm x 250 mm, 5 microm) with methanol and water containing 0.1% formic acid as mobile phases in a
Genomic and in vivo evidence of synergy of a herbal extract compared to its most active ingredient: Rabdosia rubescens vs. oridonin.
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Rabdosia rubescens is a herbal root extract of traditional Chinese medicine (TCM) used to treat inflammatory diseases and oral cancers. A key principle of TCM is that multiple ingredients in a plant extract are more effective and less toxic than a single purified active ingredient or a purified drug
The cytostatic and cytotoxic effects of oridonin (Rubescenin), a diterpenoid from Rabdosia rubescens, on tumor cells of different lineage.
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Rabdosia rubescens is a herbal medicine used to treat esophageal cancer in China. In this study, the sesquiterpene oridonin, an isoprenoid, was isolated from Rabdosia rubescens. Mass spectroscopy and carbon 13 NMR spectroscopy were used to identify the structure of the purified compound. It was then
A green approach for the extraction and characterization of oridonin and ursolic and oleanolic acids from Rabdosia rubescens and its kinetic behavior.
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An ultrasound-assisted supercritical carbon dioxide (USC-CO2) procedure was developed for the extraction of ursolic acid, oleanolic acid and oridonin from Rabdosia rubescens, with yields that were 9.84-10.46 and 15.43-21.10% higher than those of the conventional SC-CO2 and
Effective two-dimensional counter-current chromatographic method for simultaneous isolation and purification of oridonin and ponicidin from the crude extract of Rabdosia rubescens.
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A preparative two-dimensional counter-current chromatographic system (2D-CCC) for simultaneous separation and purification of oridonin and ponicidin from the crude extract of Rabdosia rubescens was presented. It was based on the use of a high-speed CCC (HSCCC, total column volume V(c)=146ml)
Oridonin, a diterpenoid purified from Rabdosia rubescens, inhibits the proliferation of cells from lymphoid malignancies in association with blockade of the NF-kappa B signal pathways.
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This study found that oridonin, a natural diterpenoid purified from Rabdosia rubescens, inhibited growth of multiple myeloma (MM; U266, RPMI8226), acute lymphoblastic T-cell leukemia (Jurkat), and adult T-cell leukemia (MT-1) cells with an effective dose that inhibited 50% of target cells (ED50)
Optimisation of an ultrasound-assisted extraction followed by RP-HPLC separation for the simultaneous determination of oleanolic acid, ursolic acid and oridonin content in Rabdosia rubescens.
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BACKGROUND
Rabdosia rubescens is a commonly used herb in traditional Chinese medicine and contains diterpenoids, triterpenoids and various other compounds. Among these components, oridonin, oleanolic acid and ursolic acid have gained considerable interest concerning anti-cancer activities. However,
Production of oridonin-rich extracts from Rabdosia rubescens using hyphenated ultrasound-assisted supercritical carbon dioxide extraction.
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BACKGROUND
Among active components in Rabdosia rubescens, oridonin has been considered a key component and the most valuable compound because it has a wide range of activities beneficial to human health. To produce a high-quality oridonin extract, an alternative hyphenated procedure involving an
Inhibition of caspase-9 by oridonin, a diterpenoid isolated from Rabdosia rubescens, augments apoptosis in human laryngeal cancer cells.
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Rabdosia rubescens, a commonly used traditional Chinese medicine, has increasingly gained attention for its use as an antitumor herb. Oridonin, a bioactive diterpenoid isolated from Rabdosia rubescens, has been reported to induce apoptosis in human laryngeal cancer HEp-2 cells by our group. Here, we
Differential control of growth, cell cycle progression, and expression of NF-kappaB in human breast cancer cells MCF-7, MCF-10A, and MDA-MB-231 by ponicidin and oridonin, diterpenoids from the chinese herb Rabdosia rubescens.
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Ponicidin and oridonin are novel diterpenoids isolated from Rabdosia rubescens. We tested their effects in MCF-7 and MDA-MB-231 cells, as representing low and high invasive breast carcinoma, with normal MCF-10A cells. Clonogenicity and proliferation in MCF-7 cells were inhibited more significantly
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