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1990版《中国药典》规定正品柴胡为北柴胡和红柴胡,而各地实际入药的柴胡种类往往与药典规定不尽相同。因此有必要对目前已供药用的柴胡生药中有效成分进行定量分析,作为评判各种柴胡质量的依据之一。本文应用反相HPLC法测定了9种市售商品柴胡,经鉴定为北柴胡(BupleurumchinenseDC.)、红柴胡(B.scorzonerifoliumWilld.)、空心柴胡(B.longicauleWall.exDC.var.franchetiideBoiss.)和不同产地的小叶黑柴胡(B.smithiiWolffvar.parvifoliumShanetY.Li),分别测定了其柴胡皂式a,c,d(简记为ssa,ssc,ssd)的含… 相似文献
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基于染色体计数和ITS序列初步探讨横断山区柴胡属植物(伞形科)的系统发育 总被引:3,自引:0,他引:3
横断山区是中国柴胡属Bupleurum植物的分布中心。本文对横断山区6个种2变种进行了染色体记数报道,其中4个种2变种是首次报道。对横断山区的10个种4个变种、中国北方(河北和黑龙江)的3个种的nrDNA ITS进行测序,同时从GenBank里面下载同属的来自非洲和地中海西部的16个nrDNA ITS序列数据,结合染色体数目变化结果,初步探讨了横断山区柴胡属植物的系统发育。结果表明横断山区可能是现代柴胡属植物的频度中心和多样分布中心之一。它们的祖先种可能是非洲北部的木本柴胡属植物B.fruticosum,或者是地中海西部的柴胡属植物,推测是通过中东和高加索扩散而形成的,其中与非洲南部特有种B.mundtii的亲缘关系也较近;染色体基数演化趋势是:8是较原始基数,6和7是次生基数,其染色体异基数变异和多倍化可能是物种形成、进化以及向外扩散的主要方式;在ITS系统发育树中,中国柴胡属植物染色体基数为8的种类聚为一支,染色体基数为6和7的种类聚为了一支,不支持舒璞等(1998)关于中国柴胡属的属下分类系统。结合已有的形态学、细胞学、孢粉学证据和ITS系统发育树,建议窄竹叶柴胡B.marginatum var.stenophyllum独立成种。 相似文献
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目的:为有效保护和合理利用青岛崂山药用植物资源提供科学依据.方法:实地考察青岛崂山药用植物资源,对有较高药用价值的种类从药用部位和基本药用功能角度进行了归类.结果:青岛崂山的珍贵药用植物种类达330种,且在药用部位和药用功能方面表现出了丰富的多样性.结论:青岛崂山是具有多样性的药用植物资源宝库,并提出了保护和利用建议. 相似文献
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据调查统计,宜溧山区现有蕨类植物26科、44属、82种,其中40种左右有药用价值.对这些药用蕨类的生境、药用功效、利用现状等作了简要阐述,并就其开发和利用提出了相关的建议. 相似文献
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《蛇志》2015,(4)
目的调查江西药用蛇类资源的种类、分布及养殖企业的现状,提出药用蛇类资源保护及利用建议。方法根据江西蛇类资源文献的整理和药材市场的调查,研究江西药用蛇类的种类和分布;通过走访调查以及野生动物管理部门驯养繁殖资料的整理,了解江西养殖药用蛇类企业的养殖现状。结果江西全省分布有蛇类69种,其中31种具有药用价值,养殖较为广泛的有乌梢蛇(Zaocys dhumnades)、银环蛇(Bungarus multicinctus)、尖吻蝮(Deinagkistrodon acutus)、王锦蛇(Elaphe carinata)和滑鼠蛇(Ptyas mucosus)等,药用蛇类养殖企业有38家,养殖的药用蛇类种类达12种。结论江西药用蛇类资源分布广泛,药用蛇类养殖企业驯养繁殖技术滞后,建议加强药用蛇类的野外资源保护、驯养繁殖及综合利用的研究。 相似文献
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竹叶柴胡地上部分的化学成分 总被引:2,自引:0,他引:2
竹叶柴胡(Bupleurum marginatumWall.ex DC.)为伞形科(Apiaceae)柴胡属(BupleurumL.)植物,主要分布于四川北部、陕西南部、湖北西部及云南、贵州等省区,全株均可入药,为目前市场上药材柴胡的三大主要来源之一。柴胡具解表和里、疏肝解郁、提升中气之功效,在中药学中具有重要地位,在中国也已有2000多年的应用历史。目前,有关北柴胡(B.chinenseDC.)及南柴胡(B.scorzonerifoliumWilld.)的相关研究较多,而对在西南地区广泛使用的竹叶柴胡的研究却甚少。另外,对柴胡的相关研究多集中于根及根茎,有关柴胡茎叶化学成分和药理作用的研究较少。… 相似文献
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许多药用爬行动物作为药材沿用已久,临床疗效较佳。据有关方面反映,经常遇到种类鉴别不准,影响临床疗效。或由于传说的“道地药材”观念,虽然同属一种动物,往往限于某些地方收购,出现数量不足;而另一些产区又未组织收购的情况。有的药材需求量大,供不应求,急需进行人工养殖或寻找近缘种作代用品。为解决上述问题,特介绍几种药用爬行动物,供有 相似文献
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Profiles of SARS-CoV-2 RNA and Antibodies in Inpatients with COVID-19 not Related with Clinical Manifestation: A Single Centre Study 下载免费PDF全文
Zhao Li Gao Ruqin Lu Roujian Wang Huijuan Deng Yao Niu Peihua Jiang Fachun Huang Baoying Liang Jiwei Jia Jing Zhang Feng Wang Wenling Wu Guizhen Tan Wenjie 《中国病毒学》2021,36(5):1088-1092
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RICHARD E. NORRIS 《Botanical journal of the Linnean Society. Linnean Society of London》1991,106(1):1-40
Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera. 相似文献
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JOAN VALUÈS MONTSERRAT TORRELL NÚRIA GARCIA JACAS 《Botanical journal of the Linnean Society. Linnean Society of London》2001,137(4):399-407
Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted. 相似文献
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Curcumin is the yellow pigment of turmeric that interacts irreversibly forming an adduct with thioredoxin reductase (TrxR), an enzyme
responsible for redox control of cell and defence against oxidative stress. Docking at both the active sites of TrxR was performed to compare
the potency of three naturally occurring curcuminoids, namely curcumin, demethoxy curcumin and bis-demethoxy curcumin. Results show
that active sites of TrxR occur at the junction of E and F chains. Volume and area of both cavities is predicted. It has been concluded by
distance mapping of the most active conformations that Se atom of catalytic residue SeCYS498, is at a distance of 3.56 from C13 of
demethoxy curcumin at the E chain active site, whereas C13 carbon atom forms adduct with Se atom of SeCys 498. We report that at least
one methoxy group in curcuminoids is necessary for interation with catalytic residues of thioredoxin. Pharmacophore of both active sites of
the TrxR receptor for curcumin and demethoxy curcumin molecules has been drawn and proposed for design and synthesis of most probable
potent antiproliferative synthetic drugs. 相似文献
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正Dear Editor,In December 2019, a novel human coronavirus caused an epidemic of severe pneumonia(Coronavirus Disease 2019,COVID-19) in Wuhan, Hubei, China(Wu et al. 2020; Zhu et al. 2020). So far, this virus has spread to all areas of China and even to other countries. The epidemic has caused 67,102 confirmed infections with 1526 fatal cases 相似文献
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