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Pagina 1 a partire dal 18 risultati
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
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)
Ponicidin suppresses HT29 cell growth via the induction of G1 cell cycle arrest and apoptosis.
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Ponicidin is a diterpenoid extracted from the Chinese herb Isodon adenolomus, which has been reported as a therapeutic cytotoxic drug that may be used to treat various types of human cancer. The present study aimed to determine the antitumor effects of ponicidin, and to investigate its underlying
Ponicidin, an ent-kaurane diterpenoid derived from a constituent of the herbal supplement PC-SPES, Rabdosia rubescens, induces apoptosis by activation of caspase-3 and mitochondrial events in lung cancer cells in vitro.
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Ponicidin, an ent-kaurane diterpenoid derived from a constituent of the herbal supplement PC-SPES, Rabdosia rubescens, is recently reported to have anti-tumor effects on a large variety of cancers. In this study, we demonstrate that ponicidin exhibits cytotoxicity, induces apoptosis, disrupts the
DNA binding and cleavage properties of ponicidin.
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OBJECTIVE
Ponicidin, an effective component isolated from Isodon rubescens, possesses anticancer properties. In the present study, we proved its ability to bind to and cleave DNA. DNA binding and cleavage properties are important for designing the rational construction of new and more efficient
Antiproliferation effects of ponicidin on human myeloid leukemia cells in vitro.
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Ponicidin, an extract from the Chinese herb Rabdosia rubescens, is currently one of the most important traditional Chinese herbal medicines. Ponicidin has been reported to have anti-tumor effects on a large variety of malignant diseases. In this study, we investigated the anti-proliferation effects
Ponicidin as a promising anticancer agent: Its biological and biopharmaceutical profile along with a molecular docking study.
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Ponicidin, an ent-kaurane diterpenoid derived from Rabdosia rubescens, exhibits antitumor activities against several types of cancers. This review summarizes the botanical sources, biological activities, and biopharmaceutical profile of ponicidin. Additionally, a molecular docking study has been
Phytotherapeutics Oridonin and Ponicidin show Additive Effects Combined with Irradiation in Pancreatic Cancer in Vitro.
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Chemoradiation of locally advanced non-metastatic pancreatic cancer can lead to secondary operability by tumor mass reduction. Here, we analyzed radiomodulating effects of oridonin and ponicidin in pancreatic cancer in vitro. Both agents are ent-kaurane diterpenoids, extracted from Isodon rubescens,
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
ent-Kaurane diterpenoids from the leaves of Isodon xerophilus.
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From the ethanolic extract of the leaves of Isodon xerophilus, three new ent-kaurane diterpenoids named xerophilusins L-N (1 - 3), together with three known ones designated as rabdoternin A (4), longikaurin F (5) and ponicidin (6), were isolated and structurally elucidated. Compound 6 demonstrated
A new diterpene glycoside from Rabdosia rubescens.
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A new ent-kaurene beta-D-glucoside was isolated from Rabdosia rubescens, together with the known compounds oridonin, ponicidin, and pedalitin. The structure of new compound was determined, on the basis of spectral data and X-ray crystallographic analysis, to be ent-7 beta,20-epoxy-kaur-16-ene-1
Ent-kauranoids from Isodon rubescens var. taihangensis.
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Two new compounds, rubescensins Q and R (1 and 2), and a new acetonide derivative (3) of lasiodonin, together with thirteen known analogues, oridonin (4), ponicidin (5), wikstroemioidin B (6), lasiodonin (7), lasiokaurin (8), enmenol (9), 1-O-beta-D-glucopyranosyl-enmenol (10), trichokaurin (11),
Ent-kaurane diterpenoids from Rabdosia rubescens and their cytotoxic effects on human cancer cell lines.
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Two new ent-kaurane diterpenoids, 16,17-exo-epoxide-oridonin ( 1) and 11,15- O,O-diacetyl-rabdoternins D ( 2), together with thirteen known ones, were isolated from the aerial parts of Rabdosia rubescens. Their structures were established on the basis of high-field 1D and 2D NMR methods supported by
Novel mechanism of inhibition of nuclear factor-kappa B DNA-binding activity by diterpenoids isolated from Isodon rubescens.
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The development of specific inhibitors that can block nuclear factor-kappaB (NF-kappaB) activation is an approach for the treatment of cancer, autoimmune, and inflammatory diseases. Several diterpenoids, oridonin, ponicidin, xindongnin A, and xindongnin B were isolated from the herb Isodon
[Chemical constituents of Rabdosia nervosa (Hemsl) C.Y. Wu et H. W. Li].
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Three compounds were isolated from the stems and leaves of Rabdosa nervosa. On the basis of spectral analysis their structures were elucidated as lasiokaurin, ponicidin and oridonin respectively. These compounds were obtained from R. nervosa for the first time.
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