hypericum stellatum/dental caries

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Hypericum perforatum attenuates the development of carrageenan-induced lung injury in mice.

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Hypericum perforatum is a medicinal plant species containing many polyphenolic compounds, namely flavonoids and phenolic acids. Since polyphenolic compounds have a high antioxidant potential, in this study we evaluated the effect of H. perforatum in an animal model of acute inflammation,

Strong antimicrobial activity of Hypericum perforatum L. against oral isolates of Lactobacillus spp.

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Lactobacillus spp. are one of the first microorganisms involved in the development of dental caries in the first years of life of the child. The purpose of this study was to investigate the antibacterial effect of alcoholic extract of hypericin against strains of Lactobacillus spp. and determine its

How to make hypericin water-soluble.

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Hypericin, isolated from Hypericum perforatum, is an effective photodynamic substance as demonstrated by various studies. Practical forms of applications of hypericin solutions for systemic use and introduction into body cavities are, however, lacking. We developed an aqueous solution of hypericin

Benzophenone synthase and chalcone synthase from Hypericum androsaemum cell cultures: cDNA cloning, functional expression, and site-directed mutagenesis of two polyketide synthases.

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Benzophenone derivatives, such as polyprenylated benzoylphloroglucinols and xanthones, are biologically active secondary metabolites. The formation of their C13 skeleton is catalyzed by benzophenone synthase (BPS; EC 2.3.1.151) that has been cloned from cell cultures of Hypericum androsaemum. BPS is

Crystal structure of Hyp-1, a St. John's wort protein implicated in the biosynthesis of hypericin.

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Hypericin, a red-colored naphtodianthrone, is a natural product synthesized in the medicinal plant Hypericum perforatum, widely known as St. John's wort. Hypericin has been attracting a growing attention of the pharmaceutical industry because of its potential application in various therapies,

Molecular architectures of benzoic acid-specific type III polyketide synthases.

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Biphenyl synthase and benzophenone synthase constitute an evolutionarily distinct clade of type III polyketide synthases (PKSs) that use benzoic acid-derived substrates to produce defense metabolites in plants. The use of benzoyl-CoA as an endogenous substrate is unusual for type III PKSs. Moreover,

A promiscuous CoA ligase provides benzoyl-CoA for xanthone biosynthesis in Hypericum

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Benzoic acid-derived compounds, such as polyprenylated benzophenones and xanthones, attract the interest of scientists due to challenging chemical structures and diverse biological activities. The genus Hypericum is of high medicinal value, as exemplified by H. perforatum. It is rich in benzophenone

[Morphological identification of 20 medicinal species in Hypericum].

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OBJECTIVE To provide anatomical evidences for the morphological and histological identification of 20 medicinal species in Hypericum. METHODS Morphological and anatomical study on the organs of 20 medicinal species in Hypericum using tissue clearing, paraffin sectioning and thin

Interspecific variation in localization of hypericins and phloroglucinols in the genus Hypericum as revealed by desorption electrospray ionization mass spectrometry imaging.

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Plants of the genus Hypericum are widely known for their therapeutic properties. The most biologically active compounds of this genus are naphtodianthrones and phloroglucinols. Indirect desorption electrospray ionization mass spectrometry (DESI-MS) imaging allows visualization and localization of

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