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Страница 1 от 28 резултата
Anti-acidogenic, anti-biofilm and slow release properties of Dodonaea viscosa var. angustifolia flavone stabilized polymeric nanoparticles.
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Analysis of structural requirements for Ah receptor antagonist activity: ellipticines, flavones, and related compounds.
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A number of studies have examined the structure-activity relationships for the agonist activity of Ah receptor (AhR) ligands. Fewer studies have considered the structural basis for potential antagonist properties. Certain ellipticine derivatives have been reported to bind to the AhR and inhibit the
Rapid synthesis of flavone-based monoamine oxidase (MAO) inhibitors targeting two active sites using click chemistry.
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A new library of flavone derivatives targeting two active sites of monoamine oxidases ("aromatic cage" and substrate cavity) were designed and synthesized using click chemistry (CuAAC reaction) between 6-N3 -2-phenyl chromones (Az1-Az2) and a series of alkynes (k1-k20). Their inhibitory activities
The use of vascularised spheroids to investigate the action of flavone acetic acid on tumour blood vessels.
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EMT6 multicellular spheroids were introduced into the peritoneal cavities of mice and allowed to become vascularised, resulting in solid spherical tumours. The necrotic cores of the initially avascular spheroids were replaced by vascularised tumour tissue but the outer zones of the spheroids failed
The role of immune effector cells in flavone acetic acid-induced injury to tumor cells in EMT6 spheroids.
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Inhibition of tumor blood flow appears to a major antitumor mechanism of flavone acetic acid (FAA), although non-ischemic processes may also be a significant role. To distinguish between direct and immune effector cell-mediated cytotoxicity as the basis for non-ischemic killing, effects of FAA were
Flavones with antibacterial activity against cariogenic bacteria.
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Methanolic extracts obtained from 13 plants were studied for their antibacterial activity against cariogenic bacteria. Among them, the extract from Artocarpus heterophyllus showed the most intensive activity. Serial chromatographic purifications offered two active compounds which were identified as
Natural products for dental caries prevention.
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Selected natural compounds were evaluated for their effects on dental caries due to different strains of Streptococcus mutans bacteria. Out of 39 tested compounds, four (catechol, emetine, quinine, and flavone) showed potent inhibitory activity on different strains of S. mutans at 6.25 microg/mL or
Design, synthesis and biological evaluation of substituted flavones and aurones as potential anti-influenza agents.
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We designed a series of substituted flavones and aurones as non-competitive H1N1 neuraminidase (NA) inhibitors and anti-influenza agents. The molecular docking studies showed that the designed flavones and aurones occupied 150-cavity and 430-cavity of H1N1-NA. We then synthesized these compounds and
Pyranoflavones: a group of small-molecule probes for exploring the active site cavities of cytochrome P450 enzymes 1A1, 1A2, and 1B1.
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Selective inhibition of P450 enzymes is the key to block the conversion of environmental procarcinogens to their carcinogenic metabolites in both animals and humans. To discover highly potent and selective inhibitors of P450s 1A1, 1A2, and 1B1, as well as to investigate active site cavities of these
The effect of flavone treatment on human otosclerotic ossicle organ cultures.
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We studied the effect of 7-isopropoxy-isoflavone (Ipriflavone) on the collagen synthesizing activity in human otosclerotic auditory ossicle samples from whole organ cultures during incubation for 96 h, and compared this effect with that found in normal meatal cortical bone. Ipriflavone led to a
Effect of the Hydroethanolic Extract from Echinodorus grandiflorus Leaves and a Fraction Enriched in Flavone-C-Glycosides on Antigen-Induced Arthritis in Mice.
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The leaves of Echinodorus grandiflorus are traditionally used in Brazil to treat several inflammatory conditions, including arthritis. This study aimed to investigate the antiarthritis activity of the 70% ethanol extract of E. grandiflorus leaves and a standardized flavonoid-rich fraction in an
Antinoceptive and Anti-inflammatory Activities of the Ethanolic Extract, Fractions and Flavones Isolated from Mimosa tenuiflora (Willd.) Poir (Leguminosae).
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The bark of Mimosa tenuiflora (Willd.) Poiret (Leguminosae family), popularly known as "jurema preta" in Brazil, is used by the population of Contendas of Sincorá (Bahia State, Brazil) for the treatment of coughs and wound healing. Thus, the aim of this study was to evaluate the antinociceptive and
Antifilarial activity in vitro and in vivo of some flavonoids tested against Brugia malayi.
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We evaluated the antifilarial activity of 6 flavonoids against the human lymphatic filarial parasite Brugia malayi using an in vitro motility assay with adult worms and microfilariae, a biochemical test for viability (3-(4,5-dimethylthiazol-2-yl)-2,5 diphenyltetrazolium bromide (MTT)-reduction
Beyond organoleptic characteristics: the pharmacological potential of flavonoids and their role in leukocyte migration and in L-selectin and β2-integrin expression during inflammation.
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Flavonoids are compounds responsible for several organoleptic characteristics of plant-derived foods. They are also bioactive compounds with antiinflammatory role. Different mechanisms for this activity have been reported, but their effects on cell migration are not fully understood. In the present
Host-guest interaction of 3-hydroxyflavone and 7-hydroxyflavone with cucurbit [7]uril: A spectroscopic and calorimetric approach.
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The modulation of photophysical behaviour of small organic molecules in the presence of macrocycles is one of the most interesting areas of research. In this work we reported the interaction of two biologically active molecules 3-hydroxyflavone and 7-hydroxyflavone with macrocyclic host cucurbit
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