Estrogenic and anticonceptive activity of a petroleum ether soluble fraction of Malvaviscus conzattii Greenum flowers in female rats

A petroleum ether soluble fraction Fr. III isolated from the benzene extract of Malvaviscus conzattii Greenum flowers and administered orally to adult female rats at the doses of 10, 20 and 40 mg/rat from day 1 to day 5 of pregnancy showed 50%, 60% and 80% anti-implantation, as well as 60%, 80% and 100% anticonceptive activity in the treated animals, respectively. There was a dose dependent termination of pregnancy and reduction in the number of implantation sites. In ovariectomized young female rats, the Fr. III exhibited estrogenic activity at comparable anticonceptive doses, but was devoid of antiestrogenic activity. Fr. III seems to possess a weak estrogenic activity in that a significant uterotrophic effect was discerned even at 1/16th of the anticonceptive dose.     

传说中的花朵

创造源于巧合 庞大的过去没有尽头 众星陨落 大道消失 缔造者惊诧 这是传说中 它出世的瞬间     

Homosecoiridoids from the flower buds of Lonicera japonica

Homosecoiridoids (1-15) were isolated from the flower buds of Lonicera japonica. Compounds 1-4, designated as loniphenyruviridosides A-D, possess unprecedented skeletons featuring phenylpyruvic acid derived moieties coupled with an iridoid or a secoiridoid nucleus. Compounds 5-15 (lonijaposides D-N) are additional examples of the unusual pyridinium alkaloid-coupled secoiridoids (lonijaposides A-C). The validity of the CD data to determine the configuration of the secoiridoid derivatives is discussed on the basis of detailed CD data analysis and semisynthesis of 2 and 3 with the co-occurring secologanic acid. The configuration of secologanic acid was determined by a single-crystal X-ray crystallographic analysis using anomalous scattering of Cu Kα radiation. Biosynthetic pathways of the homosecoiridoids were postulated. Compounds 1-4 inhibited STAT-3 activity of HELF cells, and lonijaposides F (7), H (9), I (10), and K (12) showed activity against the release of glucuronidase in rat polymorphonuclear leukocytes induced by platelet-activating factor.     

Saponins from the flower buds of Buddleja officinalis

Five new saponins, mimengosides C-G (1-5), were isolated from the flower buds of Buddleja officinalis along with five known compounds, namely, songaroside A, acteoside, phenylethyl 2-glucoside, echinacoside, and phenylethyl alcohol 8-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranoside. The structures of 1-5 were elucidated using spectroscopic and chemical methods, and these compounds were evaluated for their inhibitory effects against HL-60 leukemia cells.     

Acylated flavonol glycosides from the flower of Inula britannica

Three new acylated flavonol glycosides, patuletin 7-O-(6' '-isobutyryl)glucoside (1), patuletin 7-O-[6' '-(2-methylbutyryl)]glucoside (2), and patuletin 7-O-(6' '-isovaleryl)glucoside (3), were isolated from the n-BuOH extract of Inula britannica flowers by bioassay-guided fractionation, together with other known flavonoids. The structures were elucidated by 1D and 2D NMR, FABMS, and other spectral analyses. The eight flavonoids, including new compounds (1-3), patulitrin (7), nepitrin (8), axillarin (10), patuletin (11), and luteolin (12), showed profound antioxidant activity in DPPH assay and cytochrome-c reduction assay using HL-60 cell culture system.     

蒙药漏芦花的化学成分研究

目的:研究蒙药漏芦花的化学成分。方法:采用系统溶剂提取法,结合各种色谱分离技术,理化性质和光谱数据鉴定结构。结果:从祁州漏芦花里分离的到3个单体成分,1个为酚酸类化合物,2个为黄酮类化合物。结构鉴定为:①原儿茶酸,②[5,-羟基-7,,8,-(并2,,-甲基-4,,-二甲基-2''6,,二四氢呋喃-5'-O-6,,)]-3-(1'3,-戊二炔)-4-羟基-7-O-14,,8-O-13'-9-羟基-黄酮木脂素,③槲皮素。结论:所得3种化合物均为首次从祁州漏芦花中分离得到。     

三种非手术治疗腰椎间盘突出的疗效比较分析

高压氧治疗护理是指由接受过专业训练、经验丰富并具有专业上岗许可证的护士,运用正确的操舱方法,对不断变化的压力舱内接受吸氧治疗的患者提供全程看护的过程.从1964年中国第一台医用高压氧舱投入使用至今已有近半个世纪,我国高压氧治疗专科护理的内容、方法、深度及广度得到了不断充实和更新,并逐渐同国际接轨.现就国内高压氧专科护理现状及进展综述如下.     

厚朴花的质量研究

 目的：以厚朴酚、和厚朴酚含量为指标评价厚朴花的质量。方法：高效液相色谱法测定厚朴酚、和厚朴酚的含量。结果：厚朴花含厚朴酚、和厚朴酚（之和）约在0．192％～2．052％之间，越接近开花，其含量越低，其在花被中的含量最低（与花梗、雄蕊群、花托和雌蕊群中者相比较）。结论：以厚朴酚、和厚朴酚的含量作为厚朴花的质量控制指标是可行的，幼小（未成熟的）花蕾在商品中应属于质量好的厚朴花之列。     

花类药治疗银屑病经验

银屑病病因涉及免疫、环境、遗传等诸多因素,发病机制复杂.中药花类药材具有质地轻扬、活泼灵动、药性中和、使用灵便的特点,运用于银屑病的辨证处方之中,取其清热解毒、凉血止血、活血化瘀和疏肝解郁的功效.     

菊花的临床应用及其用量探究

通过搜集古医籍及现代医家临床经验,总结出菊花具有以下特点:临床用量范围为3.75～150 g,常用汤剂剂量为5～30 g,丸散剂中剂量偏小,多用1.25～2.76 g.根据疾病、证型、症状选择最佳剂量,如菊花疏风解表,治疗感冒、上呼吸道感染等呼吸系统疾病,常用10～15 g;清肝明目,治疗脑卒中、冠心病、高血压病等心脑...     

Pyridinium alkaloid-coupled secoiridoids from the flower buds of Lonicera japonica

Three pyridinium inner salt alkaloids, lonijaposides A-C (1-3), based on an unprecedented skeleton of an N-substituted nicotinic acid nucleus coupled through C-5 with C-7 of a secoiridoid, together with seven known iridoids, have been isolated from the flower buds of Lonicera japonica. Their structures were elucidated by spectroscopic and chemical analyses. Lonijaposide C (3) showed activity against the release of glucuronidase in rat polymorphonuclear leukocytes induced by the platelet-activating factor.     

望春花中的木脂素类化学成分研究

目的 研究望春花Magnolia biondii花蕾的木脂素类化学成分，为制定辛夷的质量标准寻找标准物庾，也为了进一步了解其有效成分。方法 硅胶柱色谱分离，波谱分析(UV、IR、MS、3H-NMR、13C-NMR)鉴定结构。结果 分离并鉴定了4个木脂素(Ⅰ～Ⅳ)和1个新木脂素(Ⅴ)类化合物：veraguensin(Ⅰ)、松脂素二甲醚(pinoresinol dimethyl ether，Ⅰ)、木兰脂素(magnolin，in)、里立脂素B二甲醚(1irioresinol—B dimethyl ether，Ⅳ)和denudatone(Ⅴ)。结论 化合物Ⅰ和Ⅴ系首次从该植物中分离得到。     

灰毡毛忍冬中皂苷类成分的研究

目的研究灰毡毛忍冬Lonicera macranthoides花蕾的化学成分。方法灰毡毛忍冬药材90%乙醇提取液依次用石油醚和醋酸乙酯萃取,醋酸乙酯萃取部分反复柱色谱得到化合物。结果从灰毡毛忍冬花蕾中分离鉴定了6个皂苷类化合物:3-O-β-D-吡喃葡萄糖基(1-4)-β-D-吡喃葡萄糖基(1-3)-α-L-吡喃鼠李糖基(1-2)-α-L-吡喃阿拉伯糖基-常春藤皂苷元-28-O-β-D-吡喃葡萄糖基(1-6)-β-D-吡喃葡萄糖酯苷(Ⅰ)、3-O-β-D-吡喃葡萄糖基(1-3)-α-L-吡喃鼠李糖基(1-2)-α-L-吡喃阿拉伯糖基-常春藤皂苷元-28-O-β-D-吡喃葡萄糖基(1-6)-β-D-吡喃葡萄糖酯苷(Ⅱ)、3-O-α-L-吡喃阿拉伯糖基-常春藤皂苷元-28-O-β-D-吡喃葡萄糖基(1-6)-β-D-吡喃葡萄糖酯苷(Ⅲ)、3-O-β-D-吡喃葡萄糖基(1-4)-β-D-吡喃葡萄糖基(1-3)-α-L-吡喃鼠李糖基(1-2)-α-L-吡喃阿拉伯糖基-常春藤皂苷元(Ⅳ)、3-O-β-D-吡喃葡萄糖基(1-3)-α-L-吡喃鼠李糖基(1-2)-α-L-吡喃阿拉伯糖基-常春藤皂苷元(Ⅴ)、3-O-α-L-吡喃鼠李糖基(1-2)-α-L-吡喃阿拉伯糖基-齐墩果酸-28-O-β-D-吡喃葡萄糖基(1-6)-β-D-吡喃葡萄糖酯苷(Ⅵ)。结论化合物Ⅲ为首次从忍冬属植物中分得,Ⅳ、Ⅴ为首次从该植物中分得,Ⅵ为首次从该植物中分得的齐墩果酸型皂苷。     

金银花品种的本草考证

金银花是中国传统的药用品种。该文通过系统地梳理中国历代本草文献中所记载的药用金银花的植物形态,指出传统中医使用的金银花具有缠绕藤本;茎微紫色,有被毛;叶对生,卵状心形,两面皆有被毛;一蒂双花,单花唇形,花冠长3.2 cm左右,花蕊长,花开先白后黄,总花梗单生于小枝叶腋且总苞片叶状卵形,花期3月中旬到5月中旬等特征。在忍冬科各种植物中,仅忍冬科忍冬Lonicera japonica Thunb.一个品种符合传统药用金银花的植物学特征,应作为正品药用金银花的品种使用。     

罗布麻花化学成分研究

目的研究新疆产罗布麻花的化学成分。方法硅胶柱色谱和薄层色谱进行分离和纯化,通过理化性质和光谱分析鉴定其结构。结果从罗布麻花中分离鉴定了3个香豆素类和6个黄酮类化合物,分别为东莨菪素(Ⅰ)、异白蜡树定(Ⅱ)、秦皮甲素(Ⅲ)、山柰酚(Ⅳ)、槲皮素(Ⅴ)、槲皮素-3-O-β-D-葡萄糖苷(Ⅵ)、山柰酚-3-O-β-D-吡喃葡萄糖苷(Ⅶ)、芸香苷(Ⅷ)、β-胡萝卜苷(Ⅸ)。结论以上Ⅰ～Ⅲ、Ⅷ、Ⅸ化合物为首次从该植物花中分离而得。     

三七花治疗高血压病的实验研究

[目的]本研究观察了传统中药三七花对自发性高血压大鼠(SHR)的血压干预,并初步探讨了其作用机制。[方法]以自发性高血压大鼠(SHR)为实验动物模型。以三七花温浸剂灌服作为干预措施,以松龄血脉康、硝苯地平作为对照。以血压、血浆内皮素-1(ET-1)、一氧化氮(NO)、血管紧张素Ⅱ(AngⅡ)、降钙素基因相关肽(CGRP)、血栓素B2(TXB2)、6-酮-前列腺素F1(α6-keto-PGF1α)含量作为观察研究指标。经每日给药,连续8周,期间以无创尾容积法测血压4次,全部给药结束后腹主动脉取血测相关指标。[结果]三七花温浸剂在一定剂量下对SHR具有一定的降压作用。并能降低血浆中ET-1和NO含量。[结论]三七花温浸剂对SHR具有降压作用,其作用机制可能通过改善血管内皮细胞功能,从而使血管收缩因子与血管舒张因子之间的协调趋于平衡有一定关系。     

灰毡毛忍冬花蕾水溶性化学成分研究

目的:研究灰毡毛忍冬花蕾的水溶性化学成分。方法:采用多种层析分离技术进行分离纯化,根据理化性质和波谱数据进行结构鉴定。结果:从灰毡毛忍冬干燥花蕾的水提物中分离得到了6个化合物,分别鉴定为:反式-芳樟醇-3,7-氧化物-6-O-β-D-葡萄糖苷(1)、secologanoside(2)、secoxyloganin(3)、绿原酸(4)、咖啡酸(5)、蔗糖(6)。结论:化合物1为首次以单体化合物形式从自然界中分离得到,化合物2、3为从该植物中首次分离得到。     

Alleviative effects of Cannabis flower on migraine and headache

ObjectiveFew studies to date have measured the real-time effects of consumption of common and commercially available Cannabis products for the treatment of headache and migraine under naturalistic conditions. This study examines, for the first time, the effectiveness of using dried Cannabis flower, the most widely used type of Cannabis product in the United States, in actual time for treatment of headache- and migraine-related pain and the associations between different product characteristics and changes in symptom intensity following Cannabis use.MethodsBetween 06/10/2016 and 02/12/2019, 699 people used the Releaf Application to record real-time details of their Cannabis use, including product characteristics and symptom intensity levels prior to and following self-administration; data included 1910 session-level attempts to treat headache- (1328 sessions) or migraine-related pain (582 sessions). Changes in headache- or migraine-related pain intensity were measured on a 0–10 scale prior to, and immediately, following Cannabis consumption.ResultsNinety-four percent of users experienced symptom relief within a two-hour observation window. The average symptom intensity reduction was 3.3 points on a 0–10 scale (standard deviation = 2.28, Cohen’s d = 1.58), with males experiencing greater relief than females (P < 0.001) and a trend that younger users (< 35 years) experience greater relief than older users (P = 0.08). Mixed effects regression models showed that, among the known (i.e., labeled) product characteristics, tetrahydrocannabinol levels 10% and higher are the strongest independent predictors of symptom relief, and this effect is particularly prominent in headache rather than migraine sufferers (P < 0.05), females (P < 0.05) and younger users (P < 0.001). Females and younger users also appear to gain greater symptom relief from flower labeled as “C. indica” rather than “C. sativa” or other hybrid strains.ConclusionThese results suggest that whole dried Cannabis flower may be an effective medication for treatment of migraine- and headache-related pain, but the effectiveness differs according to characteristics of the Cannabis plant, the combustion methods, and the age and gender of the patient.     

Antioxidative and acute anti-inflammatory effects of Campsis grandiflora flower

The present study was undertaken to investigate the antioxidative and anti-inflammatory activities of the extract of the flower of Campsis grandiflora (Thunb.) K. Schum. Exposure of human dermal fibroblasts to 50% EtOH extract of Campsis grandiflora flower (ECG) at 10 and 100 microg/ml showed significant protective effect against hydrogen peroxide (300 microM). ECG not only protected cell survival from H(2)O(2)-induced toxicity, but also inhibited the H(2)O(2)-induced leakage of lactate dehydrogenase (LDH) enzyme release and DNA fragmentation significantly. It was also found that ECG showed scavenging activities of radicals and reactive oxygen species with IC(50) values of 20 microg/ml against 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and 52 microg/ml against superoxide radicals in the xanthine/xanthine oxidase system, respectively. Topically applied ECG dose-dependently inhibited arachidonic acid (AA)- and 12-O-tetradecanoylphorbol 13-acetate (TPA)-induced ear edema in mice. Consistent with its antioxidative properties in vitro, the present results suggest the therapeutic potential of ECG for acute skin inflammation that may involve oxidative tissue damage.