A simple and accurate high-performance liquid chromatography method （HPLC） was described to generate the metabolite fingerprints of Melilotus. suaveolens Ledeb of different harvesting times and different parts of th...A simple and accurate high-performance liquid chromatography method （HPLC） was described to generate the metabolite fingerprints of Melilotus. suaveolens Ledeb of different harvesting times and different parts of the plant. A suitable ehro- matographic system was established using a linear gradient elution with acetonitrile and 0.1% phosphoric acid （H3PO4） as the mobile phase and a detection wavelength of 210 nm. HPLC analysis identified 12 common peaks and 8 common fingerprint peaks among the different parts of the herb. We found that the constituents varied at different harvesting times and in different parts of the plant. The HPLC fingerprint method could be used to evaluate the quality ofM. suaveolens Ledeb and Melilotus genus herbs. The same strategy can also be applied for the development of fingerprints for the quality control of other herbal medicines.展开更多
Background Melilotus suaveolens Ledeb （M. suaveolens Ledeb） has long been used as a folk medicine in inflammation-related therapy. This study was undertaken to determine the anti-inflammatory effect of the plant. Me...Background Melilotus suaveolens Ledeb （M. suaveolens Ledeb） has long been used as a folk medicine in inflammation-related therapy. This study was undertaken to determine the anti-inflammatory effect of the plant. Methods Petroleum ether fraction, ethyl acetate fraction, n-butanol fraction, aqueous fraction were obtained from ethanol extract of M. suaveolens Ledeb and evaluated by high performance liquid chromatography （HPLC）. While dexamethasone （DM） was used as a positive control, the effects of different solution fractions of ethanol extract on tumor necrosis factor α （TNF-α） mRNA, cyclooxygenase 2 （COX-2） mRNA, COX-2 and nuclear factor KB （NF-KB） of LPS-stimulated RAW 264.7 cells were studied by real-time PCR, Westem blot analysis and immunocytochemical assay, respectively. Results Coumarin was one of the main ingredients in different solution fractions of ethanol extract except the aqueous fraction with no inflammatory effect. The petroleum ether fraction, ethyl acetate fraction and n-butanol fraction of ethanol extract could inhibit the production of TNF-α mRNA, COX-2 mRNA and NF-KB to some extent. Conclusions Different solution fractions of ethanol extract from M. suaveolens Ledeb had similar anti-inflammatory effect as did dexamethasone except the aqueous fraction. Coumarin was likely to be essential to the anti-inflammatory effect, and other ingredients might attribute to their different anti-inflammatory effects from the HPLC fingerprint.展开更多
基金supported by Hubei and Wuhan Engineering Technology Center of Modernization Traditional Chinese Medicine Wuhan Jianmin Pharmacy of TCM Co. Ltd,Wuhan 430054,China.
文摘A simple and accurate high-performance liquid chromatography method （HPLC） was described to generate the metabolite fingerprints of Melilotus. suaveolens Ledeb of different harvesting times and different parts of the plant. A suitable ehro- matographic system was established using a linear gradient elution with acetonitrile and 0.1% phosphoric acid （H3PO4） as the mobile phase and a detection wavelength of 210 nm. HPLC analysis identified 12 common peaks and 8 common fingerprint peaks among the different parts of the herb. We found that the constituents varied at different harvesting times and in different parts of the plant. The HPLC fingerprint method could be used to evaluate the quality ofM. suaveolens Ledeb and Melilotus genus herbs. The same strategy can also be applied for the development of fingerprints for the quality control of other herbal medicines.
文摘Background Melilotus suaveolens Ledeb （M. suaveolens Ledeb） has long been used as a folk medicine in inflammation-related therapy. This study was undertaken to determine the anti-inflammatory effect of the plant. Methods Petroleum ether fraction, ethyl acetate fraction, n-butanol fraction, aqueous fraction were obtained from ethanol extract of M. suaveolens Ledeb and evaluated by high performance liquid chromatography （HPLC）. While dexamethasone （DM） was used as a positive control, the effects of different solution fractions of ethanol extract on tumor necrosis factor α （TNF-α） mRNA, cyclooxygenase 2 （COX-2） mRNA, COX-2 and nuclear factor KB （NF-KB） of LPS-stimulated RAW 264.7 cells were studied by real-time PCR, Westem blot analysis and immunocytochemical assay, respectively. Results Coumarin was one of the main ingredients in different solution fractions of ethanol extract except the aqueous fraction with no inflammatory effect. The petroleum ether fraction, ethyl acetate fraction and n-butanol fraction of ethanol extract could inhibit the production of TNF-α mRNA, COX-2 mRNA and NF-KB to some extent. Conclusions Different solution fractions of ethanol extract from M. suaveolens Ledeb had similar anti-inflammatory effect as did dexamethasone except the aqueous fraction. Coumarin was likely to be essential to the anti-inflammatory effect, and other ingredients might attribute to their different anti-inflammatory effects from the HPLC fingerprint.
