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Biotransformation of 20(S)-protopanaxatriol by Mucor racemosus and the anti-cancer activities of some products.

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OBJECTIVE To produce new derivatives of 20(S)-protopanaxatriol by fungal biotransformation. RESULTS Biotransformation of 20(S)-protopanaxatriol (1) by Mucor racemosus AS 3.205 afforded six products. Their structures were elucidated on the basis of extensive spectroscopic analyses. M. racemosus could

20(S)-Protopanaxatriol, one of ginsenoside metabolites, inhibits inducible nitric oxide synthase and cyclooxygenase-2 expressions through inactivation of nuclear factor-kappaB in RAW 264.7 macrophages stimulated with lipopolysaccharide.

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Ginsenosides from Panax ginseng are metabolized by human intestinal bacteria after oral administration of ginseng extract. 20(S)-Protopanaxatriol (PPT) is one of the major metabolites of ginsenosides. Inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) are important enzymes that

Neuroprotective effects of 20(S)-protopanaxatriol (PPT) on scopolamine-induced cognitive deficits in mice.

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20(S)-protopanaxatriol (PPT), one of the ginsenosides from Panax ginseng, has been reported to have neuroprotective effects and to improve memory. The present study was designed to investigate the protective effect of PPT on scopolamine-induced cognitive deficits in mice. Male Institute of Cancer

Complete biotransformation of protopanaxatriol-type ginsenosides in Panax ginseng leaf extract to aglycon protopanaxatriol by β-glycosidases from Dictyoglomus turgidum and Pyrococcus furiosus.

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Aglycon protopanaxatriol (APPT) has valuable pharmacological effects such as memory enhancement and tumor inhibition. β-Glycosidase from the hyperthermophilic bacterium Dictyoglomus turgidum (DT-bgl) hydrolyzes the glucose residues linked to APPT, but not other glycoside residues. β-Glycosidase from

Potential role of ginseng in the treatment of colorectal cancer.

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Colorectal cancer remains one of the most prevalent cancer and a leading cause of cancer related death in the US. Many currently used chemotherapeutic agents are derived from botanicals. Identifying herbal sources, including those from ginseng family, to develop better anti-cancer therapies remains

Protopanaxadiol and Protopanaxatriol-Type Saponins Ameliorate Glucose and Lipid Metabolism in Type 2 Diabetes Mellitus in High-Fat Diet/Streptozocin-Induced Mice.

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Ginsenoside is a major active component of ginseng, which exhibits various pharmacological properties such as hepatoprotection, tumor suppression and diabetes resistance. In this study, the anti-diabetic effects of protopanaxadiol (PPD) and protopanaxatriol (PPT)-type saponins were explored and

Modified Panax ginseng extract regulates autophagy by AMPK signaling in A549 human lung cancer cells.

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Panax ginseng has been used worldwide as a traditional medicine for the treatment of cancer and other diseases. The antiproliferative activity of ginseng has been increased after enzymatic processing of ginseng saponin, which may result in the accumulation of minor saponins, such as Rh2, Rg3,

Validated quantification for selective cellular uptake of ginsenosides on MCF-7 human breast cancer cells by liquid chromatography-mass spectrometry.

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The cellular behavior of ginsenosides on cancer cells has not been measured directly despite their potent anticancer activities and biological actions. A liquid chromatography-mass spectrometry (LC-MS) method was developed to measure the selective cellular uptake of ginsenosides in both cell lysates

Cellular uptake of ginsenosides in Korean white ginseng and red ginseng and their apoptotic activities in human breast cancer cells.

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Panax ginseng has been reported to have cancer-preventive properties and, through anti-inflammatory, antioxidant, and pro-apoptotic mechanisms, to influence gene expression. However, the comparison of Korean white ginseng (WG) and red ginseng (RG) in their apoptotic effects and the identification of

Reversal of P-glycoprotein-mediated multidrug resistance by protopanaxatriol ginsenosides from Korean red ginseng.

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The overexpression of P-glycoprotein (Pgp) or the multidrug resistance-associated protein (MRP) confers multidrug resistance (MDR) to cancer cells. MDR cells can be sensitized to anticancer drugs when treated concomitantly with an MDR modulator. In this study, we investigated whether or not ginseng

The antitumor activity study of ginsenosides and metabolites in lung cancer cell.

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Ginseng and its components exert various biological effects, including antioxidant, anti-carcinogenic, anti-mutagenic, and antitumor activity. Ginsenosides are the main biological components of ginseng. Protopanaxadiol (PPD) and protopanaxatriol (PPT) are two metabolites of ginsenosides. However,

Antitumor agents. 261. 20(S)-protopanaxadiol and 20(s)-protopanaxatriol as antiangiogenic agents and total assignment of (1)H NMR spectra.

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Angiogenesis is a critical step in tumor progression and involves several steps including endothelial cell (EC) proliferation, migration, and matrix remodeling. We investigated the antiangiogenic effects of 20( S)-protopanaxadiol ( 1) and 20( S)-protopanaxatriol ( 2), the sapogenins of two major

Anti-stress effects of 20(S)-protopanaxadiol and 20(S)-protopanaxatriol in immobilized mice.

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Panax ginseng C.A. MEYER (Araliaceae), which contains ginsenosides as its main components, has been shown to have various biological effects, including anti-inflammatory, anxiolytic, anti-stress, and anti-tumor effects. Orally administered ginsenoside Rb1 and Re are metabolized to

Isolation, synthesis and structures of ginsenoside derivatives and their anti-tumor bioactivity.

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Protopanaxatriol saponins obtained with AB-8 macroporous resin mainly consisted of ginsenosides Rg(1) and Re. A novel mono-ester of ginsenoside-Rh(1) (ginsenoside-ORh(1)) was synthesized through further enzymatic hydrolysis and octanoyl chloride modifications. A 53% yield was obtained by a facile

The protective effect of protopanaxatriol-type saponin on intestinal health in antibiotic-treated mice.

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Protopanaxatriol saponin (PPT) has excellent anti-cancer, anti-diabetes, and anti-anemia effects, but its effect on intestinal bacteria has rarely been studied. In this study, we investigated whether PPT has the ability to improve intestinal health in antibiotic-treated mice. Model mice were

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