lucidin/rubia tinctorum

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Characterization of lucidin formation in Rubia tinctorum L.

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Prijava / prijava

In order to approach lucidin formation (a strong mutagen or a carcinogen) from a physiological standpoint, hairy roots of Rubia tinctorum L. were established by a transformation of Agrobacterium rhizogenes strain 15834 and cultured in a liquid woody plant medium without plant hormones. The

Identification of a mutagenic substance, in Rubia tinctorum L. (madder) root, as lucidin.

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Mutagenicity of the extract from Rubia tinctorum L. (madder) root was demonstrated on Salmonella typhimurium TA100 and TA98. The active substance wa purified and characterized by TLC, UV spectrum, IR spectrum, mass spectrum and [1H]NMR spectrum. All the mutagenic activity of the extract from the

Isolation and extraction of lucidin primeveroside from Rubia tinctorum L. and crystal structure elucidation.

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Madder (Rubia tinctorum L.) has been used as a dye for over 2000 years with alizarin and purpurin the major natural dyes analysed from extractions undertaken. The use of ethanol as the solvent in the extraction process produced an extract that yielded four anthraquinone compounds lucidin

The genotoxicity of lucidin, a natural component of Rubia tinctorum L., and lucidinethylether, a component of ethanolic Rubia extracts.

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The genotoxic activity of lucidin (1,3-dihydroxy-2-hydroxymethyl-9,10-anthraquinone), a natural component of Rubia tinctorum L., was tested in a battery of short-term tests. The compound was mutagenic in five Salmonella typhimurium strains without metabolic activation, but the mutagenicity was

Mutagenicity of natural anthraquinones from Rubia tinctorum in the Drosophila wing spot test.

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Mutagenicity of anthraquinone aglycones from Rubia tinctorum L. (Rubiaceae) was examined using the somatic mutation and recombination test in Drosophila melanogaster. Larvae heterozygous for recessive wing trichome mutations, multiple wing hairs (mwh), and flare (flr3) were exposed to test compounds

Evaluation of DNA-binding activity of hydroxyanthraquinones occurring in Rubia tinctorum L.

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The naturally-occurring anthraquinones (AQs), alizarin (1,2-dihydroxyanthraquinone) and lucidin (1,3-dihydroxy-2-hydroxymethylanthraquinone), were incubated with DNA in the presence of S9 mix. The isolated DNA was analysed by 32P-postlabelling for the presence of aromatic adducts. Only lucidin

Carcinogenicity and DNA adduct formation observed in ACI rats after long-term treatment with madder root, Rubia tinctorum L.

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Madder root, Rubia tinctorum L., is a traditional herbal medicine used against kidney stones. Recently we reported that lucidin, a hydroxyanthraquinone derivative present in this plant, is mutagenic in bacteria and mammalian cells. We also demonstrated the formation of DNA adducts in tissue culture

Synthesis and polymerase-mediated bypass studies of the N2-deoxyguanosine DNA damage caused by a lucidin analogue.

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Prijava / prijava

Lucidin is a genotoxic and mutagenic hydroxyanthraquinone metabolite, which originates from the roots of Rubia tinctorum L. (madder root). It reacts with exocyclic amino groups of DNA nucleobases and forms adducts/lesions leading to carcinogenesis. To study the effect of lucidin-induced DNA damage,

Chemical structure determination of DNA bases modified by active metabolites of lucidin-3-O-primeveroside.

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Lucidin-3-O- primeveroside (LuP) is one of the components of madder root (Rubia tinctorum L.; MR) which is reported to be carcinogenic in the kidney and liver of rats. Since metabolism of LuP generates genotoxic compounds such as lucidin (Luc) and rubiadin (Rub), it is likely that LuP plays a key

The mutagenic constituents of Rubia tinctorum.

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Twenty compounds were isolated from the roots of Rubia tinctorum which are used as a commercial source of madder color. Among these compounds, mollugin (1), 1-hydroxy-2-methylanthraquinone (2), 2-ethoxymethylanthraquinone(11), rubiadin (13), 1,3-dihydroxyanthraqunone (14),

Formation of genotoxic metabolites from anthraquinone glycosides, present in Rubia tinctorum L.

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Rubia tinctorum L., a medicinal plant used for the treatment of kidney and bladder stones, contains a characteristic spectrum of 9,10-anthraquinone derivatives, which are substituted in only one of the aromatic benzo rings. The majority of the anthraquinones present in the plant itself or in plant

Isolation and extraction of ruberythric acid from Rubia tinctorum L. and crystal structure elucidation.

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Prijava / prijava

Madder (Rubia tinctorum L.) has been exploited as a dye throughout history. The roots of the plant are very rich in the highly coloured glycosidic compounds ruberythric acid and lucidin primeveroside, alongside the corresponding aglycons which can be readily formed by deglycosylation, particularly

Mild extraction methods using aqueous glucose solution for the analysis of natural dyes in textile artefacts dyed with Dyer's madder (Rubia tinctorum L.).

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Madder (Rubia tinctorum L.) has been widely used as a red dye throughout history. Acid-sensitive colorants present in madder, such as glycosides (lucidin primeveroside, ruberythric acid, galiosin) and sensitive aglycons (lucidin), are degraded in the textile back extraction process; in previous

Two validated HPLC methods for the quantification of alizarin and other anthraquinones in Rubia tinctorum cultivars.

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Prijava / prijava

Direct and indirect HPLC-UV methods for the quantitative determination of anthraquinones in dried madder root have been developed, validated and compared. In the direct method, madder root was extracted twice with refluxing ethanol-water. This method allowed the determination of the two major native

Identification and quantification of the constituents of madder root by gas chromatography and high-performance liquid chromatography.

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The possibilities in the identification and quantitation of the constituents of Rubia tinctorum L.'s root, called also madder root, was described and compared by gas chromatography (GC)-MS, high-performance liquid chromatography (HPLC)-UV/photodiode array detection (DAD) and HPLC-MS: chromatographic

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