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tamarixetin/ginkgo
Nuoroda įrašoma į mainų sritį
5 rezultatus
Inhibition of human cytochromes P450 by components of Ginkgo biloba.
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Prisijungti Registracija
The extraction, isolation and characterization of 29 natural products contained in Ginkgo biloba have been described, which we have now tested for their in-vitro capacity to inhibit the five major human cytochrome P450 (CYP) isoforms in human liver microsomes. Weak or negligible inhibitory activity
Biologically active secondary metabolites from Ginkgo biloba.
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Three new compounds, (7E)-2beta,3alpha-dihydroxy-megastigm-7-en-9-one (1), 3-[5,7-dihydroxy-2-(4-methoxyphenyl)-4-oxo-4H-chromen-8-yl]-4-methoxybenzoic acid (2), and 4'-O-methyl myricetin 3-O-(6-O-alpha-L-rhamnopyranosyl)-beta-D-glucopyranoside (3), were isolated from Ginkgo biloba, together with 27
Bioactive terpenoids and flavonoids from Ginkgo biloba extract induce the expression of hepatic drug-metabolizing enzymes through pregnane X receptor, constitutive androstane receptor, and aryl hydrocarbon receptor-mediated pathways.
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OBJECTIVE
The objective of the current study is to investigate the hypothesis that bioactive terpenoids and flavonoids of Ginkgo biloba extract (GBE) induce human hepatic drug metabolizing enzymes (DMEs) and transporters through the selective activation of pregnane X receptor (PXR), constitutive
Plasma levels and distribution of flavonoids in rat brain after single and repeated doses of standardized Ginkgo biloba extract EGb 761®.
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It is undisputed that terpene lactones and flavonoid glycosides of Ginkgo biloba are responsible for most of the extracts (e.g., EGb 761®) pharmacological actions. This investigation focused on the pharmacokinetic and the ability of the flavonoid constituents to cross the blood-brain barrier in
Ginkgo biloba extract EGb 761 increases stress resistance and extends life span of Caenorhabditis elegans.
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EGb 761, a standardized extract of Ginkgo biloba leaves, has been used in clinical trials for its beneficial effects on brain functions. In mammals, EGb 761 has been shown to enhance cognition, stress resistance, and longevity, but its molecular and cellular mechanisms are not known. In the present
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