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Puslapis 1 nuo 70 rezultatus
Antitumor activity of ginseng sapogenins, 25-OH-PPD and 25-OCH3-PPD, on gastric cancer cells.
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OBJECTIVE
25-Hydroxyprotopanaxadiol (25-OH-PPD) and 25-methoxylprotopanaxadiol (25-OCH3-PPD), two ginseng sapogenins, have potent antitumor activity and their effects on gastric cancer (BGC-823, SGC-7901, MKN-28) cells and a gastric mucosa (GES-1) cell line are reported.
RESULTS
Both compounds
Inhibitory effects of ginseng sapogenins on the proliferation of triple negative breast cancer MDA-MB-231 cells.
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Because of poor prognosis, clinical treatment of triple-negative (TN) breast cancer remains the most challenging factor in cancer treatment. Extensive research into alternative cancer therapies includes studying the naturopathic effects of the medicinal herb ginseng. This study investigates the
Isolation of saponins with the inhibitory effect on nitric oxide, prostaglandin E2 and tumor necrosis factor-alpha production from Pleurospermum kamtschaticum.
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As an attempt to search for bioactive natural products exerting antiinflammatory activity, we have isolated two saponins were isolated from the aerial portion of Pleurospermum kamtschaticum (Umbelliferae) by nitrite assay activity-directed chromatographic fractionation. They were identified as
13,28-Epoxy triterpenoid saponins from Ardisia japonica selectively inhibit proliferation of liver cancer cells without affecting normal liver cells.
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Twenty 13,28-epoxy and related triterpenoid saponins from Ardisia japonica were evaluated for their anti-proliferative activity on human liver cancer cells and normal liver cells. Eight saponins selectively inhibited the growth of liver cancer Bel-7402 and HepG-2 cells without affecting the survival
C21-steroidal pregnane sapogenins and their derivatives as anti-inflammatory agents.
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During the screening of natural anti-inflammatory agent, we identified some C21-steroidal pregnane sapogenins or the derivatives to inhibit TLR2, TLR3, and TLR4-initiatedinflammatory responses respectively. Treatment with active compounds 10, 2j and 3p failed to impact tumor necrosis factor-α
Cytotoxicity of triterpenoid saponins. Part 1: Activities against tumor cells in vitro and hemolytical index.
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Genuine saponins from Solidago virgaurea L., Heteropappus altaicus (Willd.) Novopokr., H. biennis (Ldb.) Tamamsch., and Helianthus annuus L. (Asteraceae) as well as related carbohydrate modified glycosides of polygalacic acid and echinocystic acid were investigated in view of their structure related
Antiproliferative effects of saponins from the roots of Platycodon grandiflorum on cultured human tumor cells.
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Three new triterpenoid saponins, platyconic acid B lactone (1), deapio-platyconic acid B lactone (2), and deapio-platycodin D(2) (3), together with 17 known triterpenoid saponins, were isolated from a root extract of Platycodon grandiflorum. The structures of 1-3 were determined on the basis of
Synthesis and biological evaluation of novel sarsasapogenin derivatives as potential anti-tumor agents.
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Based on the fact that timosaponin A-III (TA-III) exhibits potent cytotoxic effects and has been considered as a potential anti-tumor agent, a range of novel sarsasapogenin derivatives 1, 2a-2g, 3, 4, 5, 6a-6g have been synthesized by a simple and facile synthetic route. The in vitro cytotoxic
Novel dammarane-type sapogenins from Panax ginseng berry and their biological activities.
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Three new dammarane-type sapogenins (1, 3, and 5) together with two known ones (2 and 4) were isolated from the total hydrolyzed saponins extracted from Panax ginseng berry. Their structures were elucidated using a combination of 1D and 2D (1)H and (13)C NMR spectra and mass spectroscopy as
Caspase-mediated pro-apoptotic interaction of panaxadiol and irinotecan in human colorectal cancer cells.
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OBJECTIVE
Panaxadiol is a purified sapogenin of ginseng saponins that exhibits anticancer activity. Irinotecan is a second-line anticancer drug, but clinical treatment with irinotecan is limited due to its side effects. In this study, we have investigated the possible synergistic anticancer effects
The synergistic apoptotic interaction of panaxadiol and epigallocatechin gallate in human colorectal cancer cells.
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Panaxadiol (PD) is a purified sapogenin of ginseng saponins, which exhibits anticancer activity. Epigallocatechin gallate (EGCG), a major catechin in green tea, is a strong botanical antioxidant. In this study, we investigated the possible synergistic anticancer effects of PD and EGCG on human
Synthesis and potent cytotoxic activity of a novel diosgenin derivative and its phytosomes against lung cancer cells.
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Diosgenin (Di), a steroidal sapogenin derived from plants, has been shown to exert anticancer effects in preclinical studies. Using Di as a starting material, various Di derivatives were designed and synthesized, aiming to discover new steroid-based antitumor agents. In this work, we synthesized
Synthesis and in vitro anticancer activity of 23(23')E-benzylidenespirostanols derived from steroid sapogenins.
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Benzylidenespirostanols were prepared by two-step synthesis including BF3·Et2O-catalyzed aldol condensation of several acetylated steroid sapogenins with benzaldehyde followed by saponification. The obtained compounds showed moderate cytotoxicity against three cancer cell lines (T-lymphoblastic
New flavans, spirostanol sapogenins, and a pregnane genin from Tupistra chinensis and their cytotoxicity.
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Seven new compounds, including three new flavans [tupichinol A-C (1-3)], three new spirostanol sapogenins [tupichigenin D-F (4-6)], and one new pregnane genin [tupipregnenolone (7)], together with 18 known compounds, were isolated from the underground parts of Tupistra chinensis. The structures of
Porrigenins A and B, novel cytotoxic and antiproliferative sapogenins isolated from Allium porrum.
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Four new sapogenins, porrigenins A (2a) and B (3a), identified as (25R)-5 alpha-spirostan-2 beta,3 beta,6 beta-triol and (25R)-2-oxo-5 alpha-spirostan-3 beta,6 beta-diol, respectively, and neoporrigenins A (2b) and B (3b) were also isolated from Allium porrum. In addition, the known agigenin (1a)
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