苦豆子生物碱对犊牛细菌性腹泻作用的研究进展

苦豆子（Sophora alopecuroides L）主要含生物碱和黄酮类化合物,具有镇痛、强心、抗病毒、抗炎、抗肿瘤、免疫抑制、抗菌杀虫等作用.近些年来,有关苦豆子生物碱的研究报道很多,但对犊牛细菌性腹泻的研究甚少.通过苦豆子对犊牛细菌性腹泻的防治应用研究进行综述.     

花卉新秀--日本食用菊花"山园K1号"品种简介

该文通过对日本食用菊花“山园K1号”品种的培育与生物学特性介绍，详细说明了该菊花品种的栽培与田问管理，为该品种在国内引种，提供了理论基础。     

Preclinical Pharmacology of BA-TPQ,a Novel Synthetic Iminoquinone Anticancer Agent

Marine natural products and their synthetic derivatives represent a major source of novel candidate anti-cancer compounds. We have recently tested the anti-cancer activity of more than forty novel compounds based on an iminoquinone makaluvamine scaffold, and have found that many of the compounds exert potent cytotoxic activity against human cancer cell lines. One of the most potent compounds, BA-TPQ [(11,12),7-(benzylamino)-1,3,4,8-tetrahydropyrrolo[4,3,2-de]quinolin-8(1H)-one], was active against a variety of human cancer cell lines, and inhibited the growth of breast and prostate xenograft tumors in mice. However, there was some toxicity noted in the mice following administration of the compound. In order to further the development of BA-TPQ, and in a search for potential sites of accumulation that might underlie the observed toxicity of the compound, we accomplished preclinical pharmacological studies of the compound. We herein report the in vitro and in vivo pharmacological properties of BA-TPQ, including its stability in plasma, plasma protein binding, metabolism by S9 enzymes, and plasma and tissue distribution. We believe these studies will be useful for further investigations, and may be useful for other investigators examining the use of similar compounds for cancer therapy.     

氮磷钾配施对瓦布贝母产量及总生物碱质量分数的影响

为了研究不同施肥水平下瓦布贝母产量和总生物碱质量分数的差异,确定合理的施肥量。采用三因素五水平二次通用组合设计进行田间试验,在室内进行产量和总生物碱质量分数的测定,根据三元二次通用旋转设计原理对数据进行方差分析,分别建立瓦布贝母增重率和总生物碱质量分数与N(X_1)、P(X_2)、K(X_3)施用量的数学函数模型。结果表明,肥料的增产效果依次为磷肥氮肥钾肥,对瓦布贝母生物碱的影响效果为氮肥钾肥磷肥。通过数据模型选优,综合考虑产量和总生物碱质量分数,得到合理的肥料施用量:尿素8.98～12.00 kg/hm~2、过磷酸钙38.79～43.37 kg/hm~2、硫酸钾17.44～24.49 kg/hm~2。     

滤光膜对黄檗茎段愈伤组织诱导及3种生物碱含量的影响

以黄檗茎段为外植体,研究不同颜色滤光膜对其愈伤组织诱导及生物碱（小檗碱、掌叶防己碱、药根碱）含量的影响。将接种到MS+1.5 mg/L BA+0.5 mg/L NAA+20 g/L葡萄糖培养基上的茎段置于不同条件下培养,20天后对其进行形态观察并取样用于生物量测量及生物碱含量测定。结果表明,各种处理条件下外植体均100%的诱导了愈伤组织,但不同处理对外植体状态、愈伤组织生长和次生代谢产物含量均有不同程度影响。其中对照、蓝膜处理下诱导的愈伤组织较疏松、颜色鲜艳、生长旺盛,而红膜、绿膜和黄膜则诱导出较少愈伤组织且呈老化状态。进一步研究表明,对照和蓝膜处理下3种生物碱含量明显高于其他处理。实验表明,对照和蓝膜对愈伤组织生长和次生代谢产物含量的积累效果最好,黄膜次之,绿膜和红膜最差。     

Two new cytotoxic isomeric indole alkaloids from the roots of Nauclea orientalis

A pair of new isomeric indole alkaloids, naucleaorals A (1) and B (2) were isolated from the roots of Nauclea orientalis. The structures of compounds 1 and 2 were fully characterized using spectroscopic data, and were tested for their cytotoxicity (HeLa and KB cells) and antimalarial activity. Compound 1 showed significant cytotoxicity to HeLa cells with an IC₅₀ value of 4.0 µg/mL, while compound 2 exhibited very modest cytotoxicity to both cell lines with IC₅₀ values of 7.8 and 9.5 µg/mL, respectively. Both compounds proved to be inactive in antimalarial assays (IC₅₀ > 10.00 µg/mL).     

A new indole alkaloid from Ervatamia yunnanensis

The stems of Ervatamia yunnanensis have afforded a new indole alkaloid, ervataine (1), whose structure was determined by spectroscopic analysis. Five known compounds, ibogaine (2) coronaridine (3), heyneanine (4), voacangine hydroxyindolenine (5) and coronaridine hydroxyindolenine (6), were also isolated.     

平贝母新：炮制品开发研究报告I—总生物碱提取工艺的优化及新炮制品分析

目的优化平贝母总生物碱提取工艺,分析不同新炮制品的总生物碱变化情况,为其开发利用提供理论依据。方法参考前人的研究成果。采用正交实验法优化平贝母总生物碱提取工艺：采用传统中药的炮制方法（醋炙、酒炙、姜炙、蜜炙）加工平贝母新产品。结果75％乙醇提取2次。每次提取时间2h,总生物碱得率最高;与传统加工品中的总生物碱含量（0．191％）相比,醋炙、酒炙分别为0．242％、0．204％：姜炙、蜜炙分别为0．186％、0．167％。结论平贝母中总生物碱的最佳提取工艺为：75％乙醇提取2次,每次提取时间2h。醋炙、酒炙能有效地提高平贝母的有效成分含量;姜炙、蜜炙则相反。     

冰川棘豆化学成分系统预试及生物碱成分薄层色谱分析

本试验采用植物化学成分系统预试法、生物碱系统提取法和薄层色谱技术对冰川棘豆地上部分全草的化学成分,特别是生物碱成分进行了薄层色谱分析。结果表明冰川棘豆含有生物碱、氨基酸和蛋白质、有机酸、酚类和鞣质、多糖及甙类、皂甙、甾体、香豆素、萜类以及蒽醌类。不含挥发油、黄酮体、氰甙和脂肪族硝基化合物;5 000 g冰川棘豆干草粉经醇类溶剂提取得总浸膏312.0 g,再经酸化、碱化处理,收集碱水液依次用氯仿、乙酸乙酯和正丁醇分段萃取,分别得氯仿部分0.5 g,乙酸乙酯部分5.4 g,正丁醇部分52.0 g,初步表明冰川棘豆生物碱主要集中在正丁醇提取部分,以强极性生物碱为主;各部分生物碱提取物经薄层层析分析,结果表明氯仿部分至少有9种生物碱,乙酸乙酯部分至少有11种,正丁醇部分至少有4种。经与苦马豆素标准样品对照,证明三部分提取物均含有苦马豆素。