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Stranica 1 iz 19 rezultatima
Alkaloids derived from genus Veratrum and Peganum of Mongolian origin as multidrug resistance inhibitors of cancer cells.
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Alkaloids comprise one of the largest groups of plant secondary metabolites including vinca alkaloids. The ability of six alkaloids from Veratrum lobelianum, one from Veratrum nigrum and three from Peganum nigellastrum to modify transport activity of MDR1 was studied. Flow-cytometry in a
Peganum harmala L.'s anti-growth effect on a breast cancer cell line.
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This research was done to evaluate the induction of apoptosis in MDA-MB-231 breast cancer cell line by Peganum harmala's extract, in which a significant amount of ß-carbolines is included. The apoptosis incidence was assessed through Annexin-V-Flous kit. The expressions of genes through which
Seeds of Peganum Harmala L. chemical analysis, antimalarial and antioxidant activities, and cytotoxicity against human breast cancer cells.
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The present study evaluated the levels of total phenolics, flavonoids, tannins and anthocyanins from Peganum harmala L. seeds and determined their antioxidant, antiplasmodial and anticancer potentials. Antioxidant activity was determined by DPPH and ABTS assays. Extracts of P. harmala seeds from
Composition and anti-oxidant, anti-cancer and anti-inflammatory activities of Artemisia herba-alba, Ruta chalpensis L. and Peganum harmala L.
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In this study, biological activities of methanolic extracts from Artemisia herba-alba, Ruta chalpensis L. and Peganum harmala L. plants, collected in Centre of Tunisia, were investigated. Results showed an important phenolic composition of Artemisia herba-alba (123.95±4.3g GAE/kg of dry mass). The
Peganum harmala L. is a candidate herbal plant for preventing dioxin mediated effects.
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Dioxins are widespread environmental contaminants that have been linked with a variety of deleterious effects on human health including increased cancer rates. The detrimental effects of 2,3,7,8-tetrachlorodibenzo- P-dioxin (TCDD, one of the most common environmental dioxins) are mediated via the
In vitro inhibition of angiogenesis by heat and low pH stable hydroalcoholic extract of Peganum harmala seeds via inhibition of cell proliferation and suppression of VEGF secretion.
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BACKGROUND
Progression of cancer cells is completely dependent on its angiogenesis. Inhibition of tumor angiogenesis has shed new light on cancer treatment. As a result, anti-angiogenesis therapy represents one of the most significant advances in clinical oncology. Peganum harmala L.
Cytotoxic Constituents and Mechanism from Peganum harmala.
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Peganum harmala L. is a traditional Chinese and Uygur medicine used to treat cancer. Bioactivity-guided fractionation was applied to determine the cytotoxic constituents from P. harmala. A novel triterpenoid and a phenolic glycoside were isolated and identified, as well as seven known compounds. The
Structurally Diverse Alkaloids from the Seeds of Peganum harmala.
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Investigation of the alkaloids from Peganum harmala seeds yielded two pairs of unique racemic pyrroloindole alkaloids, (±)-peganines A-B (1-2); two rare thiazole derivatives, peganumals A-B (3-4); six new β-carboline alkaloids, pegaharmines F-K (5-10); and 12 known analogues. Their structures,
A Series of β-Carboline Alkaloids from the Seeds of Peganum harmala Show G-Quadruplex Interactions.
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In this study, we screened 17 medicinal plants for binding activity to G-quadruplex d(TTGGGTT)4 by (1)H NMR spectroscopy and found that the crude extract of Peganum harmala L. seeds showed the most potential binding activity. Subsequently, (1)H NMR- and bioassay-guided isolation of the extract of P.
Antitumor quinazoline alkaloids from the seeds of Peganum harmala.
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A phytochemical study on the methanol extracts from the seeds of Peganum harmala L. led to a new quizonaline alkaloid (S)-vasicinone-1-O-β-d-glucopyranoside (1) and four known ones, (R)-vasicinone-1-O-β-d-glucopyranoside (2), (S)-vasicinone (3), vasicine (4), and deoxyvasicinone (5). Their
Antitumour principles from Peganum harmala seeds.
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From ancient times, Peganum harmala was claimed to be an important medicinal plant. Its seeds were known to possess hypothermic, and essentially hallucinogenic properties. Various authors have undertaken studies on the antibacterial, antifungal and antiviral effects of Peganum harmala seeds, but
Protective effects of Peganum harmala extracts on thiourea-induced diseases in adult male rat.
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Cancers and hepatoprotective prevention using traditional medicines have attracted increasing interest. The aim of our study was to characterize the putative protective effects of ethanol and chloroform extracts of Peganum harmala on thiourea-induced diseases in adult male rat. We seek to determine
Microwave-assisted extraction of three bioactive alkaloids from Peganum harmala L. and their acaricidal activity against Psoroptes cuniculi in vitro.
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BACKGROUND
Peganum harmala L. is a perennial herbaceous, glabrous plant that grows in semi-arid conditions, steppe areas and sandy soils. It is used to treat fever, diarrhoea, subcutaneous tumours, arthralgia, rheumatism, cough, amnesia and parasitic diseases in folk medicines. In this paper, we
Triterpenoids with anti-proliferative effects from the seeds of Peganum harmala L.
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Three undescribed lupane-type triterpenoids (1-3), three undescribed oleanane-type triterpenoids (4-6), and ten known pentacyclic triterpenoids (7-16) were isolated from the seeds of Peganum harmala L. (Zygophyllaceae). Their structures were elucidated using various spectroscopic methods (IR,
An in vitro evaluation of human DNA topoisomerase I inhibition by Peganum harmala L. seeds extract and its beta-carboline alkaloids.
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OBJECTIVE
Peganum harmala L. (Zygophyllaceae) seeds extract is one of the main components of an ethnobotanical preparation used in the treatment of neoplasms in Iran. Cytotoxic effects of P. harmala extract on cancerous cell-lines have been reported before. beta-carbolines like harmaline and harmine
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