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12 rezultatima
Two new phenylpropanoids from the resin of Styrax tonkinensis (Pierre) Craib ex Hartw
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Two new phenylpropanoids, named stytonkinol A (1) and stytonkinol B (2), have been isolated from the resin of Styrax tonkinensis (Pierre) Craib ex Hartw. Their structures were determined by spectroscopic analysis, including 1D and 2D NMR, and HR-ESI-MS. Two isolated compounds were assayed for
Anti-Inflammatory and Anti-Apoptotic Effects of Stybenpropol A on Human Umbilical Vein Endothelial Cells.
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Inflammation is a key mediator in the progression of atherosclerosis (AS). Benzoinum, a resin secreted from the bark of Styrax tonkinensis, has been widely used as a form of traditional Chinese medicine in clinical settings to enhance cardiovascular function, but the active components of the
Cytotoxic Activity of Compounds from Styrax obassia.
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Cancer is a major public health burden in both developed and developing countries. Plant-derived compounds have played an important role in the development of useful anti-cancer agents. The current study was designed to evaluate the cytotoxic activity of chemical compounds from the stem bark of
Antibacterial, anti-biofilm and anticancer potentials of green synthesized silver nanoparticles using benzoin gum (Styrax benzoin) extract.
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This study described a simple and green approach for the synthesis of silver nanoparticles (AgNPs) employing benzoin gum water extract as a reducing and capping agent and their applications. The AgNPs were characterized by ultraviolet-visible spectrophotometer, X-ray diffraction pattern, field
Study of the cytotoxic activity of Styrax camporum extract and its chemical markers, egonol and homoegonol.
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The benzofuran lignans egonol and homoegonol are found in all species of the genus Styrax. Since natural products are important sources of new anticancer drugs, this study evaluated the cytotoxic activity of a hydroalcoholic extract of the stems of S. camporum (SCHE) and their chemical markers,
Four new benzofurans from seeds of Styrax perkinsiae.
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Four new benzofurans trans-5-(3-hydroxypropyl)-7-methoxy-2-[2,3-dihydro-3-hydroxymethyl-7-methoxy-2-(3-methoxy-4-hydroxyphenyl)-benzofuran-5-yl]benzofuran (1), (E)-5-(2-formylvinyl)-7-methoxy-2-(3,4-methylenedioxyphenyl)benzofuran (2),
Pentacyclic triterpenoids and their cytotoxicity from the stem bark of Styrax japonica S. et Z.
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The methylene chloride soluble fraction of MeOH extract from the stem bark of Styrax japonica S. et Z. (Styracaceae) showed significant cytotoxicity by SRB method against five human tumor cell lines. Four known pentacyclic triterpenoids, oleanolic aldehyde acetate (1), erythrodiol-3-acetate (2),
WITHDRAWN: Erythrodiol-3-acetate isolated from Styrax japonica elicits the inhibition of UV-induced gelatinases B in cultured human keratinocyte cells.
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Methanol and aqueous extracts of Styrax japonica Sieb. et Zucc used traditionally for the treatments of skin elastic materials were screened in vitro for the gelatinases B inhibitor actions. Erythrodiol-3-acetate (E) from the stem barks of S. japonica showed significant gelatinase B inhibition in
Triterpenoid from Styrax japonica SIEB. et ZUCC, and its effects on the expression of matrix metalloproteinases-1 and type 1 procollagen caused by ultraviolet irradiated cultured primary human skin fibroblasts.
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Long term and repeated exposure of ultraviolet light on the skin often induces chronic skin diseases such as skin cancer as well as photoaging, and the mechanisms of these skin damages are closely associated with up-regulation of matrix metalloproteinase's (MMPs) activities. The methylene chloride
Inhibitory effect of Styrax Japonica Siebold et al. Zuccarini glycoprotein (38 kDa) on interleukin-1β and induction proteins in chromium(VI)-treated BNL CL.2 cells.
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Chromium(VI) [Cr(VI)] induces chronic inflammation in hepatocytes. Inflammation has been shown to play an important role in tumorigenesis, tumor progression, and metastasis. To examine the effects of the Styrax Japonica Siebold et al. Zuccarini (SJSZ) glycoprotein on inflammation in BNL CL.2 cells,
Styraxoside A isolated from the stem bark of Styrax japonica inhibits lipopolysaccharide-induced expression of inducible nitric oxide synthase and cyclooxygenase-2 in RAW 264.7 cells by suppressing nuclear factor-kappa B activation.
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In the present study, the effects of terpenes (styraxosides A and B) and lignans (egonol, masutakeside I, and styraxlignolide A) isolated from the stem bark of Styrax japonica Sieb. et Zucc. (styracaceae) were evaluated on lipopolysaccharide (LPS)-induced nitric oxide (NO) and prostaglandin E2
Egonol gentiobioside and egonol gentiotrioside from Styrax perkinsiae promote the biosynthesis of estrogen by aromatase.
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Estrogen deficiency is associated with a variety of diseases, including osteoporosis, atherosclerosis, and Alzheimer's disease. Aromatase cytochrome P450 is the only enzyme in vertebrates known to catalyze the biosynthesis of estrogens from androgens. Inhibitors of aromatase have been developed for
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