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biapigenin/hypericum
Lidhja ruhet në kujtesën e fragmenteve
Faqja 1 nga 35 rezultatet
Liquid chromatography-tandem mass spectrometry of I3,II8-biapigenin, the major biflavone in Hypericum perforatum extracts.
Vetëm përdoruesit e regjistruar mund të përkthejnë artikuj
Identifikohuni Regjistrohu
High-performance liquid chromatography method coupled with tandem mass spectrometry was developed for the quantitative determination of I3,II8-biapigenin. The procedure includes solid-phase extraction and separation on an XTerra MS C18. The assay was linear over a wide range; precision and accuracy
Biflavonoids in Hypericum perforatum1; Part 1. Isolation of I3, II8-Biapigenin.
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Identifikohuni Regjistrohu
From the Soxhlet extract of HYPERICUM PERFORATUM, biflavonoids have been isolated by column chromatography on Sephadex LH 20 and preparative TLC. The structure of the main compound was elucidated by UV-, (1)H- and (13)C-NMR spectroscopy and MS as I3,II8-Biapigenin.
Quercetin, kaempferol and biapigenin from Hypericum perforatum are neuroprotective against excitotoxic insults.
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Identifikohuni Regjistrohu
In the present study we investigated the effects of phenolic compounds present in Hypericum perforatum against neuronal excitotoxicity and mitochondrial dysfunction. Quercetin, kaempferol and biapigenin significantly reduced neuronal death caused by 100 microM kainate plus 100 microM
Biapigenin modulates the activity of the adenine nucleotide translocator in isolated rat brain mitochondria.
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Identifikohuni Regjistrohu
In this study, we investigated the effects of biapigenin, a biflavone present in the extracts of Hypericum perforatum, in rat brain mitochondrial bioenergetics and calcium homeostasis. We found that biapigenin significantly decreased adenosine diphosphate (ADP)-induced membrane depolarization and
In vitro binding studies with two hypericum perforatum extracts--hyperforin, hypericin and biapigenin--on 5-HT6, 5-HT7, GABA(A)/benzodiazepine, sigma, NPY-Y1/Y2 receptors and dopamine transporters.
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Identifikohuni Regjistrohu
Interactions between neurotransmitter receptors involved in the pathophysiology of depression, anxiety and ethanol consumption and two extracts (hydromethanolic and lipophilic extracts obtained with hypercritical CO2) from Hypericum Perforatum L or St. John's wort (SJW) and three constituents
Development of an LC-MS method for simultaneous quantitation of amentoflavone and biapigenin, the minor and major biflavones from Hypericum perforatum L., in human plasma and its application to real blood.
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Identifikohuni Regjistrohu
BACKGROUND
Biflavones of Hypericum perforatum L. are bioactive compounds used in the treatment of inflammation and depression. Determination of amentoflavone and biapigenin from blood is challenging owing to their similar structures and low concentrations.
OBJECTIVE
To develop a rapid, sensitive and
Comparison of the synaptosomal uptake inhibition of serotonin by St John's wort products.
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Identifikohuni Regjistrohu
Although the number of prescriptions for psychotropic drugs has decreased in recent years, prescriptions for antidepressants are still increasing (Fritze 2002). Hypericum perforatum (St John's wort) is the main psychotherapeutic herbal medicinal product used for treatment of mild-to-moderate
Benzophenone O-glycosides from Hypericum elegans.
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Identifikohuni Regjistrohu
Elegaphenonoside, a new benzophenone O-rhamnoside, together with two known benzophenone O-glycosides, namely hypericophenonoside and neoannulatophenonoside, were isolated from the aerial parts of Hypericum elegans Stephan ex Willd. The structure of the new compound was established as
Cytotoxic activity of antioxidant constituents from Hypericum triquetrifolium Turra.
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Identifikohuni Regjistrohu
The Sulforodamine B (SRB) assay was used to test cytotoxicity against four human cancer cell lines and one normal cell line of antioxidant constituents isolated from Hypericum triquetrifolium Turra. Methanolic extract and pure compounds were tested against the large cell lung carcinoma cell line
Antioxidant activity of methanolic extract of Hypericum triquetrifolium Turra aerial part.
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Identifikohuni Regjistrohu
The antioxidant activity of the methanol extract of Hypericum triquetrifolium Turra (Hypericaceae) aerial part and of flavonoids isolated therein, I3,II8-biapigenin, quercetin-3-O-galactoside, kaempferol-3-O-glycoside, (-)-epicatechin and hypericin, was evaluated. The IC(50) resulted between 0.062
Quantitative changes of dianthrones, hyperforin and flavonoids content in the flower ontogenesis of Hypericum perforatum.
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Identifikohuni Regjistrohu
Samples of Hyperici herba were obtained by harvesting Hypericum perforatum L. in different plant development stages. The relation of flower development phases in the drug's flower fraction was examined. The HPLC method was then employed for the analysis of the content of secondary metabolites in
Identification of the major constituents of Hypericum perforatum by LC/SPE/NMR and/or LC/MS.
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Identifikohuni Regjistrohu
The newly established hyphenated instrumentation of LC/DAD/SPE/NMR and LC/UV/(ESI)MS techniques have been applied for separation and structure verification of the major known constituents present in Greek Hypericum perforatum extracts. The chromatographic separation was performed on a C18 column.
Significance of genetic and environmental aspects in the field cultivation of Hypericum perforatum.
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Identifikohuni Regjistrohu
Agronomical and biochemical parameters of seven Hypericum perforatum (St. John's wort) accessions grown at three experimental sites in Switzerland were followed over a two year period (1995-1996). Significant effects of environmental (= site) and genetic factors (= accession) on flowering dates,
TLC-Direct Bioautography as a Bioassay Guided Method for Investigation of Antibacterial Compounds in Hypericum perforatum L.
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Identifikohuni Regjistrohu
Fast high-throughput TLC-direct bioautography (DB) is an effect-directed analysis method that enables searching for biologically active (e.g., antimicrobial) substances in complex mixtures like plant extracts. The principle of the method is that separation and detection of biological properties of
Cellular reactive oxygen species inhibitory constituents of Hypericum thasium Griseb.
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Identifikohuni Regjistrohu
The phytochemical investigation of the ethyl acetate extract of Hypericum thasium has led to the characterization of four benzophenone derivatives 1-4, a known benzophenone 5 and four known flavonoids, quercetin (6), quercitrin (7), isoquercetin (8), and 3, 8''-biapigenin (9). Lucigenin- and
Baza e të dhënave më e plotë e bimëve medicinale e mbështetur nga shkenca
- Punon në 55 gjuhë
- Kurime bimore të mbështetura nga shkenca
- Njohja e bimëve nga imazhi
- Harta GPS interaktive - etiketoni bimët në vendndodhje (së shpejti)
- Lexoni botime shkencore në lidhje me kërkimin tuaj
- Kërkoni bimë medicinale nga efektet e tyre
- Organizoni interesat tuaja dhe qëndroni në azhurnim me kërkimet e lajmeve, provat klinike dhe patentat
Shkruani një simptomë ose një sëmundje dhe lexoni në lidhje me barërat që mund të ndihmojnë, shtypni një barishte dhe shikoni sëmundjet dhe simptomat që përdoren kundër.
* I gjithë informacioni bazohet në kërkimin shkencor të botuar
