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1.
建立了北刘寄奴药材中木犀草素和毛蕊花糖苷的反相高效液相含量测定方法。采用Agilent Zorbax SB-Aq C18 column (250 mm×4.6 mm, 5 μm) 色谱柱; 0.05%磷酸 (A) 和甲醇 (B) 梯度洗脱; 流速1.0 mL/min; 检测波长310 nm和350 nm。木犀草素和毛蕊花糖苷分别在0.0341-0.8172 mg/mL (r2 = 0.9999)和0.0708-2.832 mg/mL (r2 = 0.9999)范围内与峰面积呈良好的线性关系。平均加样回收率分别为102.7%和98.3%。15批北刘寄奴药材中木犀草素和毛蕊花糖苷的含量差异明显。本文首次报道了北刘寄奴药材中毛蕊花糖苷的含量测定方法。 相似文献
2.
目的 研究不同种类药用辅料成分对麦角甾苷固体脂质纳米粒(SLN)理化性质的影响,为研究SLN的处方筛选提供依据。方法 采用乳化-固化法制备麦角甾苷-SLN,单一变量法考察山嵛酸甘油酯(Compritol ATO 888)、单硬脂酸甘油酯、大豆卵磷脂、Myrj52等辅料对麦角甾苷-SLN粒径、包封率、表征分散度(PDI)等理化性质的影响,采用透射电镜法观察麦角甾苷-SLN的形态,X-射线衍射(XRD)分析其药物晶体结构。结果 随Compritol ATO 888用量增加,麦角甾苷-SLN粒径不断减小,包封率逐渐减小,PDI逐渐增加;随单硬脂酸甘油酯的用量增加,粒径明显增大,包封率略有降低,PDI减小;随卵磷脂用量增加,粒径明显增大,包封率降低,PDI减小;随Myrj52用量明显增加,粒径减小,包封率增加,PDI增大;麦角甾苷-SLN外观圆整,呈球形;麦角甾苷以分子分散状态被包裹在SLN中。结论 不同辅料对麦角甾苷-SLN的理化性质均产生一定影响趋势,为制备SLN的处方筛选研究提供启示与思路。 相似文献
3.
玄参中苯丙素苷Acteoside对小鼠高尿酸血症的影响 总被引:6,自引:0,他引:6
目的探讨玄参中苯丙素苷Acteoside对小鼠高尿酸血症的影响及可能的作用机理。方法从玄参根中分离提取苯丙素苷成分Acteoside,采用次黄嘌呤造成小鼠高尿酸血症,观察Acteoside对小鼠高尿酸血症的影响,并进一步从体外观察Acteoside对黄嘌呤氧化酶的抑制作用。结果Acteoside能显著降低高尿酸血症小鼠体内的尿酸水平,体外实验显示其对黄嘌呤氧化酶有明显的抑制作用,IC50为12.25μgml-1。结论玄参中Acteoside在小鼠高尿酸血症中的降尿酸作用可能与其抑制黄嘌呤氧化酶作用有关。 相似文献
4.
The existing therapies of IgA nephropathy are unsatisfying. Acteoside, the main component of Rehmannia glutinosa with anti-inflammatory and anti-immune effects, can improve urinary protein excretion and immune disorder. Th22 cell is involved in IgA nephropathy progression. This study was determined to explore the effect of acteoside on mesangial injury underlying Th22 cell disorder in IgA nephropathy. Serum Th22 cells and urine total protein of patients with IgA nephropathy were measured before and after six months treatment of Rehmannia glutinosa acteoside or valsartan. Chemotactic assay and co-culture assay were performed to investigate the effect of acteoside on Th22 cell chemotaxis and differentiation. The expression of CCL20, CCL22 and CCL27 were analyzed. To explore the effect of acteoside on mesangial cell injury induced by inflammation, IL-1, IL-6, TNF-α and TGF-β1 were tested. Results showed that the proteinuria and Th22 lymphocytosis of patients with IgA nephropathy significantly improved after combination treatment of Rehmannia glutinosa acteoside and valsartan, compared with valsartan monotherapy. In vitro study further demonstrated that acteoside inhibit Th22 cell chemotaxis by suppressing the production of Th22 cell attractive chemokines, i.e., CCL20, CCL22 and CCL27. In addition, acteoside inhibited the Th22 cell proliferation. Co-culture assay proved that acteoside could relieve the overexpression of pro-inflammatory cytokines, and prevent the synthesis of TGF-β1. TGF-β1 level in mesangial cells was positively correlated with the Th22 cell. This research demonstrated that acteoside can alleviate mesangial cell inflammatory injury by modulating Th22 lymphocytes chemotaxis and proliferation. 相似文献
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目的 观察毛蕊花糖苷(acteoside)对慢性温和不可预知应激(chronic unpredictable mild stress,CUMS)大鼠学习记忆及突触可塑性的影响。方法 采用CUMS结合孤养的方式制备抑郁模型大鼠。成模后随机分为模型组、氟西汀(20mg/kg)组、毛蕊花糖苷低(30mg/kg)剂量组和高剂量(60mg/kg)组,每组12只,另取12只正常大鼠作为对照组。连续灌胃给药3周。糖水偏好实验和强迫游泳实验检测大鼠抑郁样行为;Morris水迷宫实验检测大鼠学习记忆能力;在体电生理实验记录大鼠海马长时程增强(long-term potentiation,LTP);免疫组织化学和免疫蛋白印迹法检测海马突触结合蛋白-1(synaptotagmin-1,Syt1) 的表达。结果 与对照组比较,模型组大鼠糖水消耗率明显降低,强迫游泳不动时间明显延长,逃避潜伏期明显延长,海马LTP幅值明显降低,海马Syt1表达明显减少(P均<0.05);模型大鼠经毛蕊花糖苷灌胃3 w后,上述各项指标均得到有效逆转。结论 毛蕊花糖苷可能通过增加海马突触可塑性和Syt1的表达改善CUMS大鼠的学习记忆能力。 相似文献
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《药学学报(英文版)》2017,7(6):647-656
Cistanche deserticola (CD) is one of the two authoritative source plants of Cistanches Herba, a well-known medicinal plant. Herein, 1H NMR spectroscopy was employed to characterize the chemical profile and to distinguish the different parts, as well as to propose a new processing workflow for CD. Signal assignment was achieved by multiple one and two dimensional NMR spectroscopic techniques in combination with available databases and authentic compounds. The upper parts of the plant were distinguished from the lower parts by combining 1H NMR spectroscopic dataset with multivariate statistical analysis. A new processing method that hyphenated steaming with freeze-drying, was demonstrated to be superior to either steaming coupled with oven-drying or direct freeze-drying via holistic 1H NMR-based metabolomic characterization. Phenylethanoid glycosides, mainly echinacoside and acteoside, were screened out and confirmed as the chemical markers responsible for exhibiting the superiority of the new processing workflow, whereas serial primary metabolites, especially carbohydrates and tricarboxylic acid cycle metabolites, were found as the primary molecules governing the discrimination between the upper and lower parts of the plant. Collectively, 1H NMR spectroscopy was demonstrated as a versatile analytical tool to characterize the chemical profile and to guide the in-depth exploitation of CD by providing comprehensive qualitative and quantitative information. 相似文献
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高效液相色谱法测定康力宝口服液中麦角甾苷含量 总被引:2,自引:0,他引:2
目的建立康力宝口服液中麦角甾苷的高效液相色谱含量测定方法。方法采用Shim-packvp-ODS柱(4.6mm×150mm,5μm),以甲醇-乙腈-四氢呋喃-0.1mol·L-1醋酸钠缓冲液(冰醋酸调pH至4.0)(8∶8∶7∶77)为流动相,流速为1.0ml/min,检测波长为334nm,灵敏度为0.05AUFS。结果麦角甾苷在4.05~64.80μg·ml-1范围内呈良好的线性关系,r=0.9998。平均回收率99.65%,RSD为2.10%(n=5)。结论方法简便、准确、重现性好,可用于该制剂的质量控制。 相似文献
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目的研究类叶升麻苷对谷氨酸诱导的PC12细胞损伤的影响。方法将PC12细胞分为正常对照组、模型对照组、阳性药组和类叶升麻苷给药组。除正常对照组外,其余各组均以1.5 mmol·L-1谷氨酸处理24 h,再分别以10 μmol·L-1维生素E 和15.625,31.25,62.5,125,250 μmol·L-1类叶升麻苷作用。通过倒置显微镜观察细胞形态,采用四甲基偶氮唑盐(MTT)比色法检测细胞存活率,酶标法试剂盒测定乳酸脱氢酶(LDH)活性,硫代巴比妥酸(TBA)法试剂盒测定丙二醛(MDA)含量,WST[2 (4 碘苯基) 3 (4 硝基苯基) 5 (2,4 二磺酸苯基) 2氢 四唑盐,二钠盐]法试剂盒测定超氧化物歧化酶(SOD)活性,酶联免疫吸附法(ELISA)检测胞内活性氧(ROS)含量。结果与模型对照组比较,除类叶升麻苷Ⅰ组(15.625 μmol·L-1AS)以外,其余各类叶升麻苷给药组均可明显改善PC12细胞形态,提高细胞存活率和SOD酶活性(P<0.01),抑制LDH活性及MDA和ROS生成(P<0.01或P<0.01)。结论类叶升麻苷对谷氨酸诱导的PC12细胞损伤具有保护作用。 相似文献
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目的:建立骨松灵颗粒的质量标准。方法:采用薄层色谱法(TLC)对复方中淫羊藿、骨碎补、补骨脂、熟地黄、黄芪、当归、盐杜仲、醋龟甲进行定性鉴别;采用高效液相色谱法(HPLC)对淫羊藿中淫羊藿苷、骨碎补中柚皮苷、熟地黄中毛蕊花糖苷、黄芪中黄芪甲苷进行含量测定。结果:八味药材薄层色谱图斑点清晰,具有专属性;淫羊藿苷在0.031 5~1.712 0 ug范围内线性关系良好,r=0.999 7,平均回收率为100.23%,RSD为2.23%;柚皮苷在0.056 8~1.817 5 μg范围内线性关系良好,r=0.999 6,平均回收率为99.97%,RSD为1.22%;毛蕊花糖苷在0.060 8~1.945 6 μg范围内线性关系良好,r=0.999 8,平均回收率为99.94%,RSD为1.24%;黄芪甲苷在0.467 6~11.220 0 μg范围内线性关系良好,r=0.999 1,平均回收率为99.84%,RSD为3.35%。结论:该方法能准确可靠地进行定性、定量检测,能有效地控制骨松灵颗粒的质量。 相似文献
10.
HPLC法测定管花肉苁蓉中松果菊苷和麦角甾苷的含量 总被引:1,自引:0,他引:1
目的:建立同时测定管花肉苁蓉药材及提取物中松果菊苷和麦角甾苷含量的HPLC法。方法:采用Hypersil ODS C18(200mm×4.6mm,5μm)色谱柱,甲醇-乙腈-1%醋酸溶液(15:10:75)为流动相,流速为0.8ml·min^-1,检测波长为334nm,柱温为30℃。结果:松果菊苷和麦角甾苷线性范围分别在3.65—234.00μg·ml^-1(r=0.9999)和2.74~175.20μg·ml^-1(r=0.9999)浓度范围内呈良好的线性关系,平均回收率分别为95.7%,95.8%,RSD分别为1.8%,2.7%(n=9)。结论:方法简便,精密度、重复性良好,结果准确可靠,可用于工业生产肉苁蓉药材、饮片及其制剂的含量测定。 相似文献