TLC法对众生丸中蒲公英成分的快速鉴别

目的为建立众生丸中蒲公英成分的快速定性鉴别方法,采用薄层色谱法(TLC),基于样品与标准品对照,实现快速定性鉴别。方法通过参考有关文献,经过实验,对众生丸中蒲公英成分的提取方法、提取时间、提取溶剂、展开剂的选择、显色剂的选择对实验结果的影响进行研究。结果以乙酸乙酯为溶剂经超声提取、以三氯甲烷为展开剂,喷以10%硫酸乙醇溶液作为显色剂。薄层色谱鉴别斑点清晰,阴性对照无干扰。结论所建立方法操作简单,具有速度快,分离效果、专属性和重现性好的优点,应用于众生丸中蒲公英成分的快速定性鉴别,可加强对众生丸的质量控制。     

蒲公英辅助治疗皮肤软组织扩张器置入术后轻度感染的临床疗效观察

[目的]探讨蒲公英乙醇糊状物外敷在皮肤软组织扩张器置入术后轻度感染时期的临床疗效。[方法]对2009年6月—2014年7月行皮肤软组织扩张器置入术后轻度感染的患者病例进行临床疗效观察。56例单枚扩张器置入术后轻度感染皮瓣采用随机数字表法分为对照组(A组)和治疗组(B组),每组28例。两组均应用抗生素头孢甲肟1 g静脉滴注,每日2次。对照组扩张皮瓣应用75%乙醇纱布湿敷,每日2次;治疗组扩张皮瓣应用蒲公英乙醇糊状物纱布湿敷,每日2次。[结果]两组治疗前后红、肿症状评分、视觉模拟评分法(VAS评分)、皮温、白细胞计数水平均较治疗前有所改善,差异具有统计学意义(P0.05)。治疗组以上检测指标改善明显优于对照组,差异具有统计学意义(P0.05)。经治疗后,治疗组的治愈率为92.9%,有效率为100%,对照组的治愈率为71.4%,有效率为82.1%。治疗组的治愈率及有效率明显优于对照组,差异具有统计学意义(P0.05)。[结论]蒲公英乙醇糊状物外敷能有效辅助治疗皮肤软组织扩张器置入术后轻度感染。     

蒲公英药材质量标准研究

目的对中药材蒲公英的水分、总灰分、酸不溶性灰分、浸出物及有效成分等物质质量进行研究,建立蒲公英药材的质量标准。方法采用TLC对蒲公英中咖啡酸、绿原酸进行定性鉴别,应用HPCE对其有效成分进行含量测定,按中国药典2005年版一部附录ⅨH水分测定法中的烘干法、附录ⅨK灰分测定法、附录X A浸出物测定法测定。结果咖啡酸、绿原酸分别在0.009 8~0.078 1 mg.mL-1,0.008 5~0.067 8 mg.mL-1内呈良好线性关系。蒲公英的水分含量不得超过10%,总灰分不得高于20%,酸不溶性灰分不得高于10%,热浸法水溶性浸出物量不低于25%,冷浸法水溶性浸出物量不低于20%。结论此法简便、准确、能有效控制蒲公英药材的质量。     

高效毛细管电泳法测定蒲公英中阿魏酸的含量

目的:建立蒲公英中主要有效成分阿魏酸的高效毛细管电泳(HPCE)含量测定方法。方法:采用高效毛细管电泳法,电泳条件:未涂层的弹性石英毛细管柱(75μm×57/50 cm),电解质为20 mmol.L-1硼砂溶液(pH 9.18),分离电压18 kV,柱温25℃,压力进样5 s,检测波长328 nm。结果:阿魏酸在0.002～0.012 g.L-1呈良好线性关系,r=0.999 8,平均回收率为98.22%,RSD 1.78%。结论:本法专属性强,简便快速,结果准确可靠,重复性好,适用于检测蒲公英中阿魏酸的含量。     

反相高效液相色谱法测定蒲公英中齐墩果酸的含量

目的:建立蒲公英中齐墩果酸的高效液相含量测定法。方法:采用高效液相色谱法,Hypersil ODS2C18色谱柱(4.6mm×250mm,5μm),柱温30℃,以甲醇-0.5%磷酸(pH=3.5)(90∶10)为流动相,流速1.0mL·min-1检测波长210nm。结果:齐墩果酸在0.872～7.848μg范围内峰面积与进样量有良好的线性关系,回归方程为:Y=6.9373X-1.9894,r=0.9999,平均回收率为98.25%,RSD为1.54%。结论:该法简便快速、准确,重复性好,有助于蒲公英质量控制方法的研究。     

药用蒲公英产品的开发进展

蒲公英是一种重要的常用中草药,不仅在临床上有清热解毒、利胆保肝等疗效,而且还是日常生活中人们喜食的绿色蔬菜。目前国内外根据蒲公英的药用价值开发出了一系列的保健品、药品和化妆品。本文以公开发表的文献及专利为依据,对蒲公英产品开发的相关研究进行综述,从而为蒲公英产品的进一步开发利用提供借鉴和参考。     

Contact sensitization from Compositae-containing herbal remedies and cosmetics

The Compositae (Asteraceae) family of plants is currently an important cause of allergic plant contact dermatitis in Europe. The family comprises some of the oldest and most valued medicinal plants, and the increasing popularity of herbal medicine and cosmetics may theoretically result in a growing number of Compositae sensitizations from these sources. According to the literature at least 15 species, including among others arnica (Arnica montana), German and Roman chamomile (Chamomilla recutita and Chamaemelum nobile), marigold (Calendula officinalis), Echinacea and elecampane (Inula helenium), have been suspected of sensitization or elicitation of Compositae dermatitis. Epidemiological data are available for 2 species only, arnica and German chamomile, the rest of the evidence being anecdotal. Based on this, sensitization seems to occur relatively frequently with a few species such as arnica and elecampane, and occurs rarely with the majority, especially the widely used German chamomile. Sesquiterpene lactones are the most important allergens, but there are a few cases of sensitization from a coumarin, a sesquiterpene alcohol and a thiophene. The risk of elicitation of dermatitis by using Compositae-containing products in Compositae-sensitive individuals is by-and-large unknown.     

Dandelion dermatitis

7 subjects, each giving a history suggesting dandelion dermatitis, were patch tested with extracts of dandelion as well as with other common members of the Compositae and to the sesquiterpene-lactone-mix. All were positive to dandelion extracts but only 2 reacted to the sesquiterpene-lactone-mix. Although the mix is a useful screening test for chrysanthemum dermatitis, it may miss dandelion allergy.     

Contact allergy to herbal teas derived from Asteraceae plants

Contact allergy to herbal teas derived from the Asteraceae plant family was investigated in patients allergic to sesquiterpene lactones (SLs). 20 patients with a known contact allergy to SLs were recalled and patch tested with aqueous extracts of 8 different herbal teas based on Asteraceae plants as well as with parthenolide and other SLs. In 18 of 20 patients with SL allergy, there were positive test reactions to the Asteraceae teas, mainly to those based on German chamomile, dandelion and wormwood. Among the SLs, parthenolide was the most frequent co-reactor. Obviously, most patients with a contact allergy to SLs are allergic to commercial teas derived from the Asteraceae plant family as well.     

液质联用技术对复方蒲公英灌肠液的色谱指纹图谱的分析

目的确定复方蒲公英灌肠液中的活性成分。方法利用三维高效液相色谱对复方蒲公英灌肠液的乙酸乙酯部分分离分析,采用液相色谱‐质谱联用技术对其色谱图谱进行确定。结果通过质谱的质荷比(M/Z)及色谱保留时间的相互比较,确定了咖啡酸、阿魏酸和原儿茶醛3种活性成分。结论液质联用技术可用于复方蒲公英灌肠液的定性分析。