加味柴胡疏肝散基准样品HPLC指纹图谱及关键质量属性量值传递规律研究

目的 建立加味柴胡疏肝散（Modified Chaihu Shugan Powder,MCSP）基准样品HPLC指纹图谱及多成分含量测定的方法,结合化学模式分析,探究关键质量属性的传递规律。方法 制备40批MCSP样品,利用HPLC法,以乙腈-0.2%磷酸水溶液为流动相,采用“中药色谱指纹图谱相似度评价软件（2012年版）”计算其相似度,结合化学计量法分析多产地多批次MCSP基准样品,结合指标性成分含量以及转移率,进行量值传递分析及整体质量研究。结果 建立的40批MCSP基准样品相似度大于0.90,指纹图谱相似度良好,29个共有峰中指认出其中13个色谱峰,所建立的多成分含量测定方法稳定可靠。芍药内酯苷、芍药苷、阿魏酸、芸香柚皮苷、柚皮苷、橙皮苷、橙皮素、新橙皮苷、去氢木香内酯、柴胡皂苷A的平均转移率分别为29.96%、22.08%、32.98%、22.42%、33.26%、15.50%、34.23%、56.94%、8.66%、8.69%。结论 采用指纹图谱结合多指标成分含量测定及转移率等评价指标对MCSP基准样品进行了量值传递综合考察,初步构建MCSP全过程质量控制体系,为制剂开发及MCSP的进一步研究提供参考。     

Suppression of inflammatory responses after onset of collagen-induced arthritis in mice by oral administration of the Citrus flavanone naringin

Rheumatoid arthritis (RA) is closely related to the pathogenesis of tumor necrosis factor α in lesions. We investigated the suppressive effects of a Citrus flavanone naringin on inflammatory responses in mice with collagen-induced arthritis (CIA), a mouse model for RA. To investigate potential preventive and therapeutic effects of naringin, mice were given naringin orally three times a week from the second immunization with collagen (day 21) and from day 31, when symptoms of CIA had reached a plateau, respectively. In both cases, inflammation-related clinical scores for knee joints were significantly reduced by administration of naringin. Histological analyses demonstrated that representative phenomena, such as damage to interchondral joints, infiltration of inflammatory cells and pannus formation, were significantly depressed by treatment with naringin. In addition, increases in the expression of high-mobility group box-1 protein in the joints of mice with CIA were suppressed by naringin. These results suggest that oral administration of naringin might be effective for treating human patients with RA.     

从骨碎补中制备新北美圣草苷和柚皮苷对照品的研究

目的 建立从骨碎补中制备新北美圣草苷和柚皮苷对照品的方法.方法 结合大孔树脂富集、硅胶柱色谱、中性氧化铝吸附、Sephadex LH-20柱色谱和重结晶方法对骨碎补乙醇提取物进行分离纯化,通过MS、IR、UV、1H-NMR和13C-NMR进行结构鉴定.结果 制备得到的新北美圣草苷和柚皮苷质量分数分别为99.5 %、99.3%.结论 建立的制备方法简单,对照品质量分数高,可作为骨碎补药效物质基础研究和骨碎补药材质量控制的对照品.     

RP—HPLC法测定金甲王颗粒中柚皮苷的含量

目的:建立 HPLC 法测定金甲王颗粒中柚皮苷含量。方法:采用 Dikma Diamonsil~(TM)C_(18)色谱柱(4.6mm×250mm,5μm),以0.05moL·L~(-1)磷酸二氢钾-乙腈-浓氨试液(80:20:0.2)为流动相,流速1mL·min~(-1),检测波长为283nm。结果:柚皮苷进样量在0.28～1.41μg范围内与峰面积具有良好的线性关系(r=0.9999);平均回收率为99.4%,RSD=1.4%(n=6)。结论:本方法操作简便,结果准确,可用于该品种的质量控制。     

HPLC-“内标”多控法测定四逆散中芍药苷、柚皮苷、橙皮苷、甘草酸和新橙皮苷

目的以四逆散为研究载体,建立"内标"多控法中药复方质量评价模式,并对该评价模式进行方法学考察。方法选取芍药苷作为四逆散中各成分的参照"内标",在不同的波长下测定各成分相对于内标成分的校正因子,利用校正因子和芍药苷对四逆散中柚皮苷、橙皮苷、甘草酸和新橙皮苷进行测定。结果芍药苷0.2812-1.6870μg(r=0.9996)、柚皮苷0.5700-3.4200μg(r=0.9994)、橙皮苷0.0502-0.3012μg(r=0.9999)、新橙皮苷0.523-3.1380μg(r=0.9999)、甘草酸铵0.3310-1.9860μg(r=0.9998)与峰面积呈良好线性关系。结论建立四逆散中柚皮苷、橙皮苷、甘草酸和新橙皮苷相对于芍药苷的校正因子。比较外标法与"内标"多控法测定的结果,表明"内标"多控法对中药复方多成分质量控制是可行的、实用的。     

中药枳实提取工艺研究

目的:探讨枳实中主要有效成分提取的最佳工艺条件。方法:以橙皮苷、柚皮苷和辛弗林的含量为指标,研究枳实提取挥发油后其它有效成分的提取溶剂。在此基础上,采用正交设计L9(3)4表,确定最佳提取工艺。结果:采用乙醇提取橙皮苷含量明显高于水提取,柚皮苷和辛弗林含量无明显差异。结论:乙醇提取的最佳工艺条件为10倍量60%乙醇提取2次,每次1.0 h。     

高效液相色谱法测定秋梨枇杷蜜中柚皮苷的含量

目的:建立用高效液相色谱法测定秋梨枇杷蜜中柚皮苷的含量测定方法。方法:采用Hypersil C18柱(250 mm×4.6mm,5μm),流动相为乙腈-0.2%磷酸(22∶78),流速1.0 mL·min-1,检测波长:283 nm,柱温:30℃。结果:柚皮苷在(28.4~142.0)μg.mL-1呈良好的线性关系,r=0.999 9,平均回收率为96.11%,RSD为1.60%。结论:本法简便、灵敏、准确,可用于该制剂的质量控制。     

胶束电动毛细管电泳法测定柑橘属药材中柚皮苷和橙皮苷的含量

建立了一种测定芸香料柑橘属药材中柚皮苷及橙皮苷含量的新方法,即以苯甲酸钠为内标物,采用胶束电动毛细管电泳地,可将上述药材中柚皮苷、橙皮苷和内标物较好分离。加样回收率柚皮苷为９８．５％,橙皮苷为９６．７％,该方法简便、准确、重现性好,可作为柚皮苷和疲苷的含量控制方法。     

Identification, quantitation and biological activity of phytoestrogens in a dietary supplement for breast enhancement

A hop-based dietary supplement, marketed for natural breast enhancement, was analysed to determine the identity and biological activity of active constituents and potential biological effects in man. Extracts of the dietary supplement were analysed by LC-MS(n) and phytoestrogens identified and quantitated by reference to appropriate standards. Only hop-associated phytoestrogens were found in the dietary supplement at significant concentrations as follows (mean+/-1 S.D.); 8-prenylnaringenin 10.9+/-0.3, 6-prenylnaringenin 27.4+/-1.2, 6,8-diprenylnaringenin 0.9+/-0.1, xanthohumol 321+/-17 and isoxanthohumol 81.1+/-1.6 microg/g of dietary supplement. The oestrogenic activity of extracts in an ERalpha reporter gene assay was equivalent to 48+/-6.3 ng 17beta-oestradiol/g supplement and consistent with the 8-prenylnaringenin content. The dietary supplement extract also inhibited reductive 17beta-hydroxysteroid oxidoreductase activity, but to a greater extent than a concentration matched reference mixture of hop phytoestrogens. However, the supplement was only weakly active in mouse uterotrophic assays following administration in feed or after subcutaneous injection of extract at doses of 8-PN up to 250 times higher than that recommended for women. These preliminary findings suggest that the dietary supplement is unlikely to produce oestrogenic effects in vivo at the level of the uterus; supporting evidence is still required to demonstrate efficacy.