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Bioactive thionic compounds and aromatic glycosides from Ligusticum chuanxiong

Acta Pharmaceutica Sinica B 2018年第5期8卷 818-824页

作者： Xu Zhang Bing Han Ziming Feng Jianshuang Jiang Yanan Yang Peicheng Zhang State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia Medica Peking Union Medical College and Chinese Academy of Medical Sciences

Three new thionic compounds,(S)-2-(2-carboxyl-2-hydroxyethylthio)-ferulic acid(1),(E)-2-methoxy-4-(3-(methylsulfonyl)prop-1-en-1-yl)phenol(2), and thiosenkyunolide C(3), together with two new aromatic glycosides(4 and 5) were isolated from the rhizome of Ligusticum chuanxiong Hort. Two known compounds(6 and 7) were also obtained. Their structures were elucidated based on extensive spectroscopic data(UV, IR, 1D and 2D NMR, and HR-ESI-MS). Furthermore the absolute configurations were established by comparison of their calculated and experimental circular dichroism spectra and by a dimolybdenum tetraacetate [Mo_2(AcO)_4]-induced circular dichroism procedure. All compounds were evaluated against lipopolysaccharide(LPS)-induced NO production in BV2 cells, and compounds 4 and 5 showed strong inhibitory activities with IC_(50) values of 2.03 and 3.09 μmol/L, respectively(positive control curcumin, IC_(50)=6.17 μmol/L). In addition, compound 1 showed weak proteintyrosine phosphatase-1 B(PTP1B) inhibitory activity.

关键词： Ligusticum chuanxiong Hort. Thionic compounds Aromatic glycosides Anti-inflammatory Natural products

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Effect of H_2O_2 on Growth of Collard( Brassis oleracea L. ) Seedlings Under Salt Stress

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Agricultural Biotechnology 2019年第1期8卷 43-46,184页

作者： Wei LI Junjie GUO Hongyan LI College of Biology and Food Engineering Huanghuai University

Collard variety( Brassis oleracea L. var. acephala f. tricolor Hort.) as a research material was treated with exogenous H_2O_2 and H_2O_2 scavenger dimethyl thiourea under 100 mmol/L NaC l stress. Two days later,growth rate,dry weight,fresh weight and relative water content of the plants were determined. After 6h of treatment,the activity and gene expression of three antioxidant enzymes,superoxide dismutase( SOD),catalase( CAT) and ascorbate peroxidase( APX) in plants,were measured. The results showed that the growth rate,dry weight,fresh weight,relative water content,and the activity and gene expression of the three antioxidant enzymes in collard seedlings were higher in the treatment of salt stress with the addition of 0. 05 mmol/L exogenous H_2O_2 than in the simple salt stress treatment; and when endogenous H_2O_2 was removed,the growth rate,dry weight,fresh weight,relative water content,and the activity and gene expression of the three antioxidant enzymes in plant seedlings were lower than those under simple salt stress. It is speculated that under salt stress,H_2O_2 is involved in the regulation of antioxidant defense gene expression,and it might be an important regulator of salt-induced antioxidant system in collard leaves.

关键词： Brassica oleracea L.var.acephala f.tricolor Hort. H 2O 2 Salt stress Antioxidase Gene expression

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适用于川芎的ISSR-PCR反应体系的建立及优化(英文)

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Agricultural Science & Technology 2012年第2期13卷 307-309,323页

作者：王岚唐琳四川大学生命科学学院四川成都610064 中州大学化工食品学院河南郑州450044

[目的]建立和优化适合川芎的ISSR-PCR反应体系。[方法]以川芎叶片为材料,利用改良CTAB法提取了叶片基因组DNA,利用单因素试验分析了DNA模板、Mg2＋、dNTP、引物和TaqDNA聚合酶的浓度对ISSR-PCR反应的影响,对适合川芎的ISSR-PCR反应条件... 详细信息

[目的]建立和优化适合川芎的ISSR-PCR反应体系。[方法]以川芎叶片为材料,利用改良CTAB法提取了叶片基因组DNA,利用单因素试验分析了DNA模板、Mg2＋、dNTP、引物和TaqDNA聚合酶的浓度对ISSR-PCR反应的影响,对适合川芎的ISSR-PCR反应条件进行了优化。[结果]确定了适合川芎的ISSR-PCR反应体系为25.0μl,其中含2.5μl10×TaqDNA聚合酶缓冲液、2.1mmol/LMgCl2、300μmol/LdNTP、0.4μmol/L引物、1.0UTaqDNA聚合酶和20~40ng模板DNA。[结论]为进一步对全国17个不同分布区的川芎资源进行遗传多样性研究奠定了基础。

关键词： Ligusticum chuanxiong Hort. ISSR-PCR Parameter optimization

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