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落葵薯提取物清除氧自由基及抗脂质过氧化作用 总被引:8,自引:0,他引:8
目的:研究落葵薯提取物的体外抗氧化作用.方法:采用HX和XO系统产生的超氧阴离子自由基,观察了落葵薯提取物对氧自由基的清除作用;用Vc-Fe2 系统诱导大离肝匀浆及线粒体所产生的脂质过氧化物,研究了落葵薯提取物的抗脂质过氧化作用.结果:落葵薯提取物对HX和XO系统产生的O2-有较强的清除能力,并能抑制肝匀浆自氧化和Vc-Fe2 系统诱导的脂质过氧化.结论:落葵薯提取物对氧自由基有清除作用,并能对抗超氧阴离子自由基引起的氧化损伤作用. 相似文献
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荞麦花叶总黄酮抗脂质过氧化作用的研究 总被引:4,自引:0,他引:4
研究荞麦花叶总黄酮(TFB)对自由基诱导小鼠肝细胞脂质过氧化作用的影响.采用(1)体内实验小鼠预先灌胃(ig)TFB0.15~0.6g/kg,每日1次,连续10d后用乙醇(AL)激发超氧阴离子自由基(O-2·),测丙二醛(MDA)含量.(2)体外实验用硫酸亚铁/半胱氨酸(FeSO4/Cys)激发小鼠肝细胞匀浆形成羟自由基(·OH),然后加入不同浓度的TFB,测MDA含量.结果TFB在体内外均能明显抑制自由基所致的MDA的产生.提示TFB具有抗脂质过氧化作用. 相似文献
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新疆黄芪(Arstragalus aksuensis Bge)为豆科紫云英植物,维吾尔名为Aksu K tirasi,主要分布于新疆维吾尔自治区境内的伊犁、天山等地,是新疆地方常用药材.具有补气固表、托疮生肌和强心利尿等作用,可用于治疗体虚自汗、久泻等病症[1].为考察阿克苏黄芪的药用价值,我们曾对阿克苏黄芪与蒙古黄芪的成分进行了比较[2,3],为进一步研究其活性,我们对阿克苏黄芪进行初步分离,得到醇提取物、水提取物及阿克苏黄芪总多糖,采用体外诱发脂质过氧化的方法观察不同组分抗脂质过氧化的作用,采用化学模拟体系研究阿克苏黄芪多糖清除活性氧(·OH,O-2)的作用.并同时与蒙古黄芪品种进行了比较,从而为阿克苏黄芪的综合利用提供理论依据. 相似文献
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地菍总黄酮体外抗小鼠肝线粒体脂质过氧化作用的研究 总被引:2,自引:0,他引:2
目的:研究地菍总黄酮(Melastoma dodecandrum flavonoids,MDF)清除氧自由基与抗脂质过氧化作用。方法:以黄嘌吟-黄嘌吟氧化酶系统产生的超氧阴离子自由基,研究MDF对氧自由基的清除作用;分别以NAPDH-维生素C和Fe^2+-半胱氨酸系统诱发的肝线粒体脂质过氧化的产物,研究MDF抗脂质过氧化的抑制作用。结果:MDF能有效地清除氧自由基,其IC50为46.4mg/L;能抑制小鼠肝匀浆自氧化,能有效地抑制NAPDH-维生素C和Fe^2+-半胱氨酸系统诱发的肝线粒体脂质过氧化作用,对肝线粒体有保护作用,并呈浓度依赖作用。结论:MDF对氧自由基有清除作用,并能预防性对抗超氧阴离子自由基引起的氧化性损伤.对肝线粒体的氧化性损伤有保护作用。 相似文献
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银杏叶黄酮的抗脂质过氧化作用 总被引:17,自引:0,他引:17
61例心绞痛患者连续服用银杏叶黄酮(天保宁)1个月后,血浆过氧化脂质和红细胞过氧化脂质平均含量显著低于服药前,接近健康成人组(60例)的平均值。提示银杏叶黄酮具有显著减缓心绞痛患者体内病理性脂质过氧化反应和抗脂质过氧化损伤的作用。 相似文献
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Seyed Fazel Nabavi Filippo Maggi Maria Daglia Solomon Habtemariam Luca Rastrelli Seyed Mohammad Nabavi 《Phytotherapy research : PTR》2016,30(11):1733-1744
Medicinal plants have been known as one of the most important therapeutic agents since ancient times. During the last two decades, much attention has been paid to the health‐promoting effects of edible medicinal plants, because of multiple beneficial effects and negligible adverse effects. Capparis spinosa L. is one of the most common medicinal plants, used widely in different parts of the world to treat numerous human diseases. This paper aims to critically review the available scientific literature regarding the health‐promoting effects of C. spinosa, its traditional uses, cultivation protocols and phytochemical constituents. Recently, a wide range of evidence has shown that this plant possesses different biological effects, including antioxidant, anticancer and antibacterial effects. Phytochemical analysis shows that C. spinosa has high quantities of bioactive constituents, including polyphenolic compounds, which are responsible for its health‐promoting effects, although many of these substances are present in low concentrations and significant changes in their content occur during processing. In addition, there is negligible scientific evidence regarding any adverse effects. Different health promotion activities, as well as tremendous diversity of active constituents, make C. spinosa a good candidate for discovering new drugs. However these findings are still in its infancy and future experimental and clinical studies are needed. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
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目的优选老鼠瓜中总生物碱的提取工艺。方法以总生物碱的得率为指标,采用正交设计的方法考察离子交换树脂的上样液浓度、pH值、流速对总生物碱提取率的影响。结果最佳提取工艺为A1B1C1,即上样液浓度为2.589μg/ml,pH值为2.5,流速为1 ml/min。结论优选得到的工艺使生物碱的提取效率高,稳定性好。 相似文献
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目的:建立刺山柑果中腺苷含量的测定方法。方法:色谱柱:Polaris(C18-A250mm×4.6mm,5μm,AB17),流动相:甲醇:水(15∶85),检测波长:260nm,流速1.0mL/min,柱温:30℃。结果:回归方程为Y=206997300X 113157.8(r=0.9991n=5),平均回收率为104.6%,RSD=4.51%,腺苷的含量为36.61mg/Kg(RSD=2.89%,n=5)。结论:本法简捷、准确,适用于刺山柑果中腺苷的含量测定。 相似文献
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Antiallergic and antihistaminic effect of two extracts of Capparis spinosa L. flowering buds 总被引:7,自引:0,他引:7
Trombetta D Occhiuto F Perri D Puglia C Santagati NA De Pasquale A Saija A Bonina F 《Phytotherapy research : PTR》2005,19(1):29-33
The antiallergic properties of two lyophilized extracts obtained from Capparis spinosa L. flowering buds (capers) by methanol extraction, carried out at room temperature (CAP-C) or with heating at 60 degrees C (CAP-H), were investigated.The protective effects of CAP-H and CAP-C, orally administered (14.28 mg[sol ]kg), were evaluated against Oleaceae antigen challenge-induced and histamine-induced bronchospasm in anaesthetized guinea-pigs. Furthermore, the histamine skin prick test was performed on humans, applying a gel formulation containing 2% CAP-C (the only extract able to protect against histamine-induced bronchospasm) on the skin for 1 h before histamine application and monitoring the erythema by reflectance spectrophotometry.The CAP-H showed a good protective effect against the bronchospasm induced by antigen challenge in sensitized guinea-pigs; conversely, a significant decrease in the responsiveness to histamine was seen only in CAP-C pretreated animals. Finally, the CAP-C gel formulation possessed a marked inhibitory effect (46.07%) against histamine-induced skin erythema.These two caper extracts displayed marked antiallergic effectiveness; however, the protective effect of CAP-H was very likely due to an indirect mechanism (for example, inhibition of mediator release from mast cells or production of arachidonic acid metabolites); conversely, CAP-C is endowed with direct antihistaminic properties. The different mechanisms of action of CAP-H and CAP-C may be related to a difference in the extraction procedure and, thus, in their qualitative[sol ]quantitative chemical profile. 相似文献
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目的:建立刺山柑果中腺苷含量的测定方法。方法:刺山柑果经超声提取,硅胶薄层层析分离,用紫外分光光度法于260nm处测定腺苷的吸光度。结果:在1.0-6.0μg/mL的范围内腺苷的浓度与吸光度呈现良好的线性关系(r=0.9995 n=6),平均回收率为96.1%(RSD=1.48% n=3),腺苷的含量为14.19mg/Kg(RSD=2.8 n=5)。结论:本法简捷、准确,适用于刺山柑果中腺苷的含量测定。 相似文献
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目的提取野西瓜成熟果实中的多糖,并对野西瓜果实中多糖进行含量测定及单糖组分分析。方法含量测定采用苯酚-硫酸法;单糖组分分析采用高效毛细管电泳。结果野西瓜粗多糖及除蛋白后(Sevage法)多糖含量分别为39.95%,66.42%;野西瓜多糖的主要单糖组分为:鼠李糖∶木糖∶葡萄糖∶(果糖和甘露糖)∶阿拉伯糖∶半乳糖=3∶5∶48∶100∶21∶19。结论实验中优化后的苯酚硫酸法简便、易行;采用高效毛细管电泳对多糖中单糖组分分析,分离效果也很好。 相似文献
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刺山柑的化学成分、药理活性与临床应用研究进展 总被引:2,自引:0,他引:2
对刺山柑的化学成分、药理活性和临床应用的研究进展进行综述。刺山柑中的化学成分主要为糖和苷类、黄酮类、生物碱类、萜类和挥发油、脂肪酸类以及甾体类等。刺山柑具有广泛的药理作用,包括抗炎止痛、抗真菌作用、保肝作用、降血糖作用、降高血脂作用、抗氧化作用、抗凝血作用、兴奋平滑肌作用、抗应激反应、改善记忆等。国内临床上主要用于痛风和风湿性关节炎、皮肤病等的治疗,应用前景广阔。 相似文献
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目的建立刺山柑不同药用部位中芦丁和山萘酚芸香苷的RP-HPLC含量测定法。方法采用Agilent ZORBAXSB-C18色谱柱(250mm×4.6mm,5μm),以乙腈-0.1%三氟乙酸(37:63)为流动相,流速为1.0ml·min-1,紫外检测波长为265nm,柱温为30℃,进样量20μl。结果芦丁在12.0-599.5μg·ml^-1之间与峰面积呈良好的线性关系(r2=0.9996);山萘酚芸香苷在4.8-237.5μg·ml-1之间与峰面积呈良好的线性关系(F2=0.9998);芦丁和山萘酚芸香苷的平均回收率分别为99.15%(RSD=1.3%)和99.58%(RSD=2.1%)。结论本方法简单、重复性好、专属性强,可为评价刺山柑药材的质量提供科学依据。 相似文献