白芍总甙促干扰素诱生及抗病毒作用的研究

研究白芍总甙的促干扰素诱生及抗病毒作用,结果表明;白芍总甙10 mg·L~(-1)在试管内无直接诱生干扰素(JFN)作用.可促进鸡新城疫互I系弱毒冻干疫苗诱生αIFN,其最适浓度为10 mg·L~(-1)可促进ConA诱生γIFN.当ConA为亚适剂量时,最适浓度为l～10 mg·L~(-1)当ConA为最适剂量时,其最适浓度为0.1 ～1mg·L~(-1),皆可提高IFN效价l～2倍。具有直接抗病毒作用,白芍总甙250 mg·L~(-1)能使水泡性口炎病毒效价下降2.22个对数值。     

酸橙中一个新的香豆素苷

目的：对中药枳实化学成分进行研究。方法：采用色谱技术进行分离，应用波谱技术、化学手段及文献对照方法，对分离得到的化合物进行结构鉴定。结果：自枳实乙醇提取物中分离得到10个化合物，分别为5，7-二羟基香豆素5—O-β-D-吡喃葡萄糖苷(Ⅰ)、3，5-二羟基苯基1-O-β-D-吡喃葡萄糖苷(phlorin，Ⅱ)、新橙皮苷(neohesperidin，Ⅲ)、柚皮苷(naringin，Ⅳ)、异樱花素7-O-β-D-新橙皮糖苷(poncirin，Ⅴ)、红橘素(tageritin，Ⅵ)、柚皮素(naringenin，Ⅶ)、马尔敏(marmin，Ⅷ)、橙皮素7-O-β-D-吡喃葡萄糖苷(hesperetin 7—O-glucoside，Ⅸ)、腺苷(adenosine，Ⅹ)。结论：化合物Ⅰ为新化合物，化合物Ⅱ、Ⅹ为首次从该植物果实中分离得到。     

紫花野芝麻化学成分研究Ⅱ

目的:研究紫花野芝麻的化学成分。方法:色谱等方法分离纯化,理化性质和光谱分析法鉴定化学成分。结果:分离并鉴定了 6 个化合物,分别为水龙骨素(polypodine B)(Ⅰ),5 OH 8 epiloganin(Ⅱ),shanzhiside methylester(Ⅲ), liriodendrin(Ⅳ),槲皮苷(quercetin-3-O-α-L-rhamnopyranoside, quercitroside)(Ⅴ),尿苷(uridine)(Ⅵ)。结论:liriodendrin为首次从野芝麻属植物中分得,其余化合物为首次从该植物中得到。     

精乌口服液的质量标准研究

目的:完善精乌口服液的质量标准。方法:采用薄层色谱法对精乌口服液中的制何首乌和黄精(制)进行定性鉴别,并采用高效液相色谱法对其中2,3,5,4’—四羟基二苯乙烯—2—O—β—D—葡萄糖苷含量进行测定。结果:精乌口服液中制何首乌和黄精(制)供试品薄层色谱中,在与对照品色谱相应的位置上,显相同颜色的斑点;2,3,5,4’—四羟基二苯乙烯—2—O—β—D—葡萄糖苷进样量在0·0562μg~0·6744μg范围内与峰面积积分值线性关系良好(r=0·9996),平均加样回收率为100·1%(RSD=1·89%)。结论:本方法回收率高、重现性好、简便、快速、准确,可用于本品的质量控制。     

基于指纹图谱、多指标含量测定的头痛宁胶囊质量评价

目的：建立指纹图谱、多指标定量相结合的头痛宁胶囊质量评价方法。方法：采用高效液相色谱法,选用Kromasil C₁₈色谱柱（250 mm×4.6 mm,5 μm）;以甲醇-0.1%磷酸水溶液为流动相,梯度洗脱;流速：1.0 mL·min^-1;柱温：30℃;检测波长：220 nm（0~40 min）、290 nm（40~100 min）;进样量：10 μL。运用"中药色谱指纹图谱相似度评价系统（2012版）"对15批样品色谱图进行分析,以落新妇苷为参照,确定22个共有峰为特征峰,相似度均>0.977;天麻素、阿魏酸、落新妇苷、5-O-甲基维斯阿米醇苷、二苯乙烯苷线性关系良好,r均>0.999 9,加样回收率在95.5%~98.9%,RSD<5%（n=6）。结论：该方法简便、准确及专属性强,可用于头痛宁胶囊质量控制和综合评价。     

Tetrahydroxy Stilbene Glucoside Alleviates High Glucose-Induced MPC5 Podocytes Injury Through Suppression of NLRP3 Inflammasome

Background

Tetrahydroxy stilbene glucoside (TSG) is an active ingredient of Heshouwu and is an antioxidant. The underlying mechanisms of the renoprotective effect of TSG in diabetic nephropathy have not been previously reported. In this study, we investigated the mechanisms of TSG in preventing podocytes injury in high glucose (HG) condition.

An enzymatic approach to configurationally rare trans‐androsteronyl‐α‐glucoside and Its potential anticancer application

Enzymatic glycosylation of sterols/steroids with glycosyltransferase HP0421 shows protein plasticity on generation of configurationally rare steryl‐α‐glucosides. Investigation of trans‐androsteronyl‐α‐glucoside on tamoxifen‐treated MCF‐7 breast cancer cells shows dose‐dependent depression of cell viability and enhanced drug effectiveness, illustrating a new avenue for the production of novel steryl‐α‐glucosides with useful biological activities.     

Molecular aspects on the interaction of protoberberine, benzophenanthridine, and aristolochia group of alkaloids with nucleic acid structures and biological perspectives

Alkaloids occupy an important position in chemistry and pharmacology. Among the various alkaloids, berberine and coralyne of the protoberberine group, sanguinarine of the benzophenanthridine group, and aristololactam-beta-d-glucoside of the aristolochia group have potential to form molecular complexes with nucleic acid structures and have attracted recent attention for their prospective clinical and pharmacological utility. This review highlights (i) the physicochemical properties of these alkaloids under various environmental conditions, (ii) the structure and functional aspects of various forms of deoxyribonucleic acid (DNA) (B-form, Z-form, H(L)-form, protonated form, and triple helical form) and ribonucleic acid (RNA) (A-form, protonated form, and triple helical form), and (iii) the interaction of these alkaloids with various polymorphic DNA and RNA structures reported by several research groups employing various analytical techniques like absorbance, fluorescence, circular dichroism, and NMR spectroscopy; electrospray ionization mass spectrometry, thermal melting, viscosity, and DNase footprinting as well as molecular modeling and thermodynamic studies to provide detailed binding mechanism at the molecular level for structure-activity relationship. Nucleic acids binding properties of these alkaloids are interpreted in relation to their biological activity.     

高效液相色谱法测定首乌旱莲滴丸中葡萄糖苷的含量

目的：本文采用高效液相色谱法对首乌旱莲滴丸中葡萄糖苷进行含量测定。方法：流动相选用乙腈-水（25：75）;检测波长为320nm。结果：本品重现性好,平均回收率X=99.6%,RSD%=1.75%。结论：该方法可以有效地控制制剂质量。