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epiberberine/coptis
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頁 1 從 40 結果
Anti-adipogenic effect of epiberberine is mediated by regulation of the Raf/MEK1/2/ERK1/2 and AMPKα/Akt pathways.
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It has been reported that alkaloids derived from Coptis chinensis exert anti-adipogenic activity on 3T3-L1 adipocytes by downregulating peroxisome proliferation-activity receptor-γ (PPAR-γ) and CCAAT/enhancer binding protein-α (C/EBP-α). However, the signaling-based mechanism of the inhibitory role
Natural alkaloid 8-oxo-epiberberine inhibited TGF-β1-triggred epithelial-mesenchymal transition by interfering Smad3
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Epithelial-mesenchymal transition (EMT), the transition of epithelial cells into mesenchymal cells, plays important roles in the metastasis of solid tumors. 8-Oxo-epiberberine (OPB) is a natural alkaloid extracted from the roots of Coptis chinensis Franch. In this study, The effect and the
Effect of epiberberine from Coptis chinensis Franch on inhibition of tumor growth in MKN-45 xenograft mice
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Background and purpose: Gastric cancer is one of the major malignancies worldwide. Epiberberine (EPI) is a major alkaloid from Coptis chinensis Franch and the antitumor property of EPI remains poorly understood.
Screening for potential -α -Glucosidase inhibitors in Coptis chinensis franch extract using ultrafiltration LC-ESI-MSn.
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Naturally existing -α -glucosidase inhibitors from traditional herbal medicines have attracted considerable interest to treat type 2 diabetes mellitus (T2DM). Hundreds of herbs have been reported to have the potential to inhibit -α -glucosidase. However, most common methods to examine the inhibitors
Antihyperglycemia and Antihyperlipidemia Effect of Protoberberine Alkaloids From Rhizoma Coptidis in HepG2 Cell and Diabetic KK-Ay Mice.
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Preclinical Research Rhizoma Coptidis (RC), the root of Coptis chinensis Franch, a species in the genus Coptis (family Ranunculaceae), has been commonly prescribed for the treatment of diabetes in Chinese traditional herbal medicine applications. The present study is focused on the assessment of the
A simple and intuitive method for optimizing the chemical constituents of Coptis Chinensis Franch. is important to assess its quality and clinical efficacy. An high performance liquid chromatography and ultraviolet spectrophotometry method was developed for the determination of berberine
Histochemical evaluation of alkaloids in rhizome of Coptis chinensis using laser microdissection and liquid chromatography/mass spectrometry.
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Traditional macroscopic and microscopic identification methods of medicinal materials are economical and practical, but usually experience-based due to few chemical supports. Here histochemical evaluation on bioactive components of Coptidis Rhizoma (CR) in anatomic sections using laser
Coptis chinensis Franch., the Chinese goldthread ('Weilian' in Chinese), one of the most important medicinal plants from the family Ranunculaceae, and its rhizome has been widely used in Traditional Chinese Medicine for centuries. Here, we analyzed the chemical components and the transcriptome of
Identification and Characterization of Genes Involved in Benzylisoquinoline Alkaloid Biosynthesis in Coptis Species.
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The dried rhizomes of Coptis chinensis have been extensively used in heat clearing, dampness drying, fire draining, and detoxification by virtue of their major bioactive components, benzylisoquinoline alkaloids (BIAs). However, C. teeta and C. chinensis are occasionally interchanged, and current
A water extract of Coptis chinensis was found to have the ability to stabilize the cleavable complex with mammalian DNA topoisomerase I. As the result of bioassay-guided fractionation, two protoberberine alkaloids, epiberberine and groenlandicine, were identified as active principles with
[Establishment of the control substance of plant drug and fingerprints of Coptis chinensis].
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OBJECTIVE
To establish the control substance of plant drug (CSPD) of Coptis chinensis Franch. and its proton nuclear magnetic resonance (1H NMR) and high performance liquid chromatography (HPLC) fingerprints for the purpose of original identification.
METHODS
The CSPD and their 1H NMR and HPLC
[An analytical method for alkaloids of Coptis chinensis based on mixed-mode surface electrostatic exclusion/reversed-phase chromatography].
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A mixed-mode chromatographic method based on surface electrostatic exclusion and reversed-phase chromatography was established for the determination of alkaloids present in Coptis chinensis. The effects of two mobile phase additives, formic acid and acetic acid, on retention, peak shape and
Application of analytical and preparative high-speed counter-current chromatography for separation of alkaloids from Coptis chinensis Franch.
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Analytical high-speed counter-current chromatography (HSCCC) was used for the systematic selection and optimization of the two-phase solvent system to separate alkaloids from Coptis chinensis Franch. The optimum solvent system thus obtained led to the successful separation of alkaloids from C.
[Dynamic accumulation of effective components and biomass of Coptis chinensis in Hongya county].
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OBJECTIVE
To study the dynamic accumulation of the effective components and biomass of Coptis chinensis, so to provide the experimental date of optimal harvest time for C. chinensis in Hongya county.
METHODS
The samples of three to five years were gathered from the same field and time. The biomass
[Simultaneous determination of six alkaloids in Coptis chinensis of different regions by RP-HPLC].
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A reversed-phase HPLC method for simultaneous determination of gatrorrhizine, columbamine, epiberberine, coptisine, palmatine and berberine in Coptis chinensis was developed. Analysis was carried out on an Xtimate C18 column (4.6 mm x 250 mm, 5 microm) eluted with acetonitrile-30 mmol x L(-1)
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