液相色谱-质谱联用导向的黄葵胶囊肾保护活性物质研究

本研究旨在发现黄葵胶囊肾保护活性物质。 采用组分制备结合液相色谱—质谱联用（LC/MS）导向筛选技术，快速发现黄葵胶囊中具有肾保护活性的物质，在盐酸阿霉素损伤HK-2细胞模型上验证其活性，并检测这些活性物质对损伤HK-2细胞中丙二醛（MDA）含量、ATP含量、线粒体耗氧率的影响。 筛选发现黄葵胶囊中四个组分具有肾保护活性，运用LC/MS分析推测出15个黄酮类化合物，其中鉴定出金丝桃苷、杨梅素、槲皮素、芦丁和异槲皮素五个化合物。验证结果表明，金丝桃苷、杨梅素、槲皮素、芦丁对损伤HK-2细胞的保护作用呈一定的量效关系，均能降低损伤细胞MDA含量、升高ATP含量、提高线粒体耗氧率，其中金丝桃苷能降低MDA含量，槲皮素和芦丁能升高ATP含量，杨梅素能提高线粒体耗氧率。 金丝桃苷、杨梅素、槲皮素、芦丁可能是黄葵胶囊中潜在的肾保护活性物质，其保护作用可能与抗脂质过氧化、减轻线粒体损伤有关。
Abstract: Objective To discover the nephroprotective substances from Huangkui capsule. Methods The components of Huangkui capsule were isolated by preparative liquid chromatography, and the active components were screened by LC/MS and identified. The adriamycine-injured HK-2 cells were treated with various active components with different concentrations, and the malonaldehyde (MDA) content, adenosine triphosphate (ATP) level and mitochondrial oxygen consumption rate were measured to verify the protective activity of the compounds. Results Four active components in Huangkui capsule were identified to exert nephroprotective effects. Fifteen flavanoids from these four components were tentatively identified by LC/MS, and hyperin, myricetin, quercetin, rutin and isoquercetin were confirmed. Hyperin, myricetin quercetin and rutin showed dose-dependent protective effects on injured HK-2 cells. Espacially, hyperin significantly reduced MDA content, quercetin and rutin significantly increased ATP level, and myricetin significantly increased mitochondrial oxygen consumption rate. Conclusion Hyperin, myricetin, querctein and rutin might be the potential nephroprotective compounds in Huangkui capsule, their effects may be related to the inhibition of lipid peroxidation and the alleviation of mitochondrial damage. Key words: Abelmoschus/drug effects Capsules Epithelial cells/cytology Kidney tubules, proxima/cytology Kidney/injuries Mass spectrometry Chromatography, liquid Disease models, animal