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triterpenoid/nekros
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Sida 1 från 192 resultat
Synthetic triterpenoids cooperate with tumor necrosis factor-related apoptosis-inducing ligand to induce apoptosis of breast cancer cells.
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Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL or Apo2L) has been shown to induce apoptosis specifically in cancer cells while sparing normal tissues. Unfortunately not all cancer cells respond to TRAIL; therefore, TRAIL sensitizing agents are currently being explored. We have
The novel triterpenoid 2-cyano-3,12-dioxooleana-1,9-dien-28-oic acid (CDDO) potently enhances apoptosis induced by tumor necrosis factor in human leukemia cells.
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Tumor necrosis factor (TNF) is a potent activator of the nuclear factor-kappaB (NF-kappaB) pathway that leads to up-regulation of anti-apoptotic proteins. Hence, TNF induces apoptosis in the presence of inhibitors of protein or RNA synthesis. We report that a novel triterpenoid,
Triterpenoid saponins of Pulsatilla koreana root have inhibition effects of tumor necrosis factor-α secretion in lipopolysaccharide-induced RAW264.7 cells.
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In the present study, a new oleanane-type triterpenoid saponin, pulsatilloside F (1), along with 21 known compounds (2-22), were isolated from the root of Pulsatilla koreana. Their chemical structures were elucidated by mass, (1)H-, (13)C-NMR, correlation spectroscopy (COSY), heteronuclear multiple
5-Lipoxygenase and cyclooxygenase inhibitory dammarane triterpenoid 1 from Borassus flabellifer seed coat inhibits tumor necrosis factor-α secretion in LPSInduced THP-1 human monocytes and induces apoptosis in MIA PaCa-2 pancreatic cancer cells.
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Phospholipase A2 (PLA2), Cyclooxygenase (COX) and 5-Lipoxygenase (5-LOX) are arachidonic acid metabolizing enzymes and their inhibitors have been developed as therapeutic molecules for cancer and inflammation related disorders. In the present study, PLA2, COX 1&2 and 5-LOX inhibitory studies of
Ursolic acid and oleanolic acid, members of pentacyclic triterpenoid acids, suppress TNF-α-induced E-selectin expression by cultured umbilical vein endothelial cells.
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E-selectin is an early response adhesion molecule expressed on the surface of endothelial cells during inflammatory responses. We examined the effects of two pentacyclic triterpenoid acids, ursolic acid (UA) and oleanolic acid (OA), on the expression of E-selectin by cultured human umbilical vein
Ursolic acid enhances cyclooxygenases and tumor necrosis factor-alpha expression in mouse skin.
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An anti-inflammatory triterpenoid, ursolic acid (UA), has recently been found unexpectedly to induce the release of a pro-inflammatory mediator in resting macrophages. In this study, we found that topical applications of UA to mouse skin twice a week for 2 weeks significantly enhanced mRNA
Anti-allergic Inflammatory Triterpenoids Isolated from the Spikes of Prunella vulgaris.
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Twelve known triterpenoids (1-12) and two steroids (13 and 14) have been isolated from the spike of the plant Prunella vulgaris. Among them, 2α,3α,23-trihydroxyursa-12,20(30)-dien-28-oic acid (10) was isolated for the first time from this plant. All isolates were evaluated for their inhibitory
Triterpenoids from Ocimum labiatum Activates Latent HIV-1 Expression In Vitro: Potential for Use in Adjuvant Therapy.
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Latent HIV reservoirs in infected individuals prevent current treatment from eradicating infection. Treatment strategies against latency involve adjuvants for viral reactivation which exposes viral particles to antiretroviral drugs. In this study, the effect of novel triterpenoids isolated from
Novel triterpenoids suppress inducible nitric oxide synthase (iNOS) and inducible cyclooxygenase (COX-2) in mouse macrophages.
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We have synthesized more than 80 novel triterpenoids, all derivatives of oleanolic and ursolic acid, as potential anti-inflammatory and chemopreventive agents. These triterpenoids have been tested for their ability to suppress the de novo formation of two enzymes, inducible nitric oxide synthase
Antiviral Activity of Basidiomycetous Fungi Against Groundnut Bud Necrosis Virus in Tomato
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Tomato is an important vegetable crop which is severely affected by Groundnut bud necrosis virus (GBNV). Until now effective antiviral agents have not been reported for the management of necrosis disease caused by GBNV. Therefore, a study was undertaken to manage the necrosis disease caused by GBNV
Bioactive triterpenoid saponins and phenolic compounds against glioma cells.
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A total of 54 natural origin compounds were evaluated for their activity in inhibiting the proliferation of glioma cells. Results showed that four Aesculus polyhydroxylated triterpenoid saponins (3-6), six Gleditsia triterpenoid saponins (7-12), and five phenolic compounds (43-46, 51) had
The Synthetic Triterpenoid RTA 405 (CDDO-EA) Halts Progression of Liver Fibrosis and Reduces Hepatocellular Carcinoma Size Resulting in Increased Survival in an Experimental Model of Chronic Liver Injury.
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Patients with cirrhosis have an increased risk of developing liver cancer and a higher rate of mortality. Cirrhosis currently has no known cure, and patients may benefit from new agents aimed at alleviating their complications and slowing down the rate of disease progression. Therefore, the effects
28-deacetylbelamcandal, a tumor-promoting triterpenoid from Iris tectorum.
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A spiroiridal-type triterpenoid, 28-deacetylbelamcandal (1), was isolated from the rhizomes of Iris tectorum as an active principle that stimulated differentiation of human promyelocytic leukemia (HL-60) cells, a short-term screening method for 12-O-tetradecanoylphorbol 13-acetate (TPA)-type tumor
Hepatoprotective activities of Antrodia camphorata and its triterpenoid compounds against CCl4-induced liver injury in mice.
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UNASSIGNED
Antrodia camphorata (AC) is a rare and precious fungus indigenous to Taiwan used as a traditional medicine for the treatment of liver injury. Triterpenoids are the major bioactive constituents of A. camphorata and have been reported to possess hepatoprotective activities. To meet the
Relationship of chemical structure to in vitro anti-inflammatory activity of tirucallane triterpenoids from the stem barks of Aphanamixis grandifolia.
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A series of tirucallane triterpenoids isolated from the stem barks of Aphanamixis grandifolia were assessed for their anti-inflammatory activity, exhibiting from weak to strong anti-inflammatory activity, by testing their inhibitory effects on nitric oxide (NO) production and tumor necrosis factor-α
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