Results 141 to 150 of about 1,074 (173)

A new cyclic peptide from the fibrous root of Pseudostellaria heterophylla

Natural Product Research, 2020
A new cyclic peptide, Pseudostellarin K (1), together with thirteen known compounds, including two cyclic peptides (2 and 3), one β-carboline alkaloid (4), two amides (5 and 6), three phenylpropanoids (7-9) and other compounds (10-14), were isolated from the fibrous root of Pseudostellaria heterophylla.
Xiao-Fei, Zhao, Qian, Zhang, Han-Tao, Zhao, Yan-da, Zhang, Han-Ru, Liu, Lu-Jiang, Yuan, Qian-Feng, Chen   +6 more
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Cloning and analyzing a squalene synthase gene in Pseudostellaria heterophylla

Gene Reports, 2018
Abstract Triterpene saponins are primary bioactive compounds in the tuberous roots of Pseudostellaria heterophylla, which is one of well-known traditional Chinese medicines. Squalene synthase (SQS) is the key speed-limiting enzyme of saponin biosynthesis pathway. Here, we cloned and analyzed a SQS gene in P. heterophylla.
Guanshui Chen, Wenjie Yu, Lanlan Ke, Daren Pan   +3 more
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Research on quality regionalization of cultivated Pseudostellaria heterophylla based on climate factors

China Journal of Chinese Materia Medica, 2016
Maxent model was applied in the study to filtering the climate factors layer by layer. Polysaccharides and pseudostellarin B the two internal quality evaluation index were combined to analyse the interlinkages between climate factors and chemical constituents in order to search for the critical climate factors of Pseudostellaria heterophylla.
Chuan-Zhi, Kang, Tao, Zhou, Wei-Ke, Jiang, Lan-Ping, Guo, Xiao-Bo, Zhang, Cheng-Hong, Xiao, Dan, Zhao   +6 more
openaire   +2 more sources

[A research on fast-propagation of Pseudostellaria heterophylla].

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2003
The result of fast-propagation of Pseudostellaria heterophylla by tissue culture showed that the best explant was stem tip. It also showed the suitable inducement mediums were MS + 6-BA 2.0 mg/L + NAA 0.2 mg/L or MS + 6-BA 4.0 mg/L + NAA 0.4 mg/L for the clustered bud, MS + 2,4-D 4.0 mg/L + Kt 0.5 mg/L or MS + 2,4-D 3.0 mg/L + Kt 0.5 mg/L for the ...
Xianhe, Tan, Jianguo, Chao, Yu, Zhang, Ying, Zhang   +3 more
openaire   +1 more source

Seed dormancy mechanisms of Pseudostellaria heterophylla and its germination characteristics

China Journal of Chinese Materia Medica, 2012
Objective Seed dormancy mechanisms, breaking dormancy and the optimal germinating conditions were studied to improve reproductive efficiency and quality standard of Pseudostellaria heterophylla. Method The P. heterophylla seeds were stratified into wettish sand for 65 days under the temperature of -2-3 degrees C, embryo length and germination ...
Chenghong, Xiao, Weike, Jiang, Tao, Zhou, Qiang, Ai, Houxi, Xiong, Mingwu, Liao   +5 more
openaire   +2 more sources

Tumor necrosis factor eliciting fractions separated from Pseudostellaria heterophylla

International Journal of Immunopharmacology, 1994
Tumor necrosis factor (TNF) could be induced in the serum of ICR mice bearing Ehrlich ascites tumor (EAT) cells by the i.v. administration of antitumor fractions (PH-I A, PH-I B, PH-I C, PH-I Ca, PH-I Cb) separated from the roots of Pseudostellaria heterophylla.
C K, Wong, K N, Leung, K P, Fung, P K, Pang, Y M, Choy   +4 more
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The Induction of Cytokine Gene Expression in Murine Peritoneal Macrophs by Pseudostellaria Heterophylla

Immunopharmacology and Immunotoxicology, 1994
We have previously shown that a mitogenic fraction (PH-I) separated from Pseudostellaria heterophylla (P. heterophylla) could act as a priming agent for the release of tumor necrosis factor-alpha (TNF-alpha) in mice. In the present study, PH-I was further purified by gel filtration chromatography and the resulting three fractions (PH-I A, PH-I B and PH-
C K, Wong, K N, Leung, M C, Fung, K P, Fung, Y M, Choy   +4 more
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[Chemical constituents from roots Pseudostellaria heterophylla].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2008
To study the chemical constituents of Pseudostellaria heterophylla.The compounds were isolated by silica gel and Sephadex LH-20 column chromatography and purified by recrystallization. Their structures were elucidated on the basis of physicochemical properties and spectral analysis.Seven compounds were identified as 2-minalin (1) , 3-furfuryl pyrrole-2-
Jian, Zhang, You-bin, Li, Da-wei, Wang, Zhi-qi, Yin, Jin-ao, Duan   +4 more
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Cyclopeptides and Amides from Pseudostellaria heterophylla (Caryophyllaceae)

Helvetica Chimica Acta, 2003
AbstractFrom the roots of Pseudostellaria heterophylla, three cyclopeptides and three amides were isolated, besides heterophyllin A and B. Their structures were determined as cyclo (Ala‐Gly‐Pro‐Val‐Tyr‐) (heterophyllin J; 1), cyclo (Ala‐Gly‐Pro‐Tyr‐Leu‐) (pseudostellarin A; 2), cyclo (Gly‐Gly‐Gly‐Pro‐Pro‐Phe‐Gly‐Ile‐) (pseudostellarin B; 3), methyl γ ...
Ya‐bin Yang, Ning‐hua Tan, Fei Zhang, Ya‐qing Lu, Min He, Jun Zhou   +5 more
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[Studies on strain characteristics of Pseudostellaria heterophylla varieties].

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica, 2005
To characterize the different varieties of Pseudostellaria heterophylla during cultivation.Using systematic selection in the main productive areas, the techniques of random design, all varieties were observed for 3 years.The biological and 425 productive characteristics of P. heterophylla var. macrophylla, P. heterophylla var.
Guang-Mei, Lin, Jian-Bao, Zhang, Chang-Hong, Hou, Shu-Gui, Wang, Ji-Duan, Yuan, Wen-Xiong, Ian   +5 more
openaire   +1 more source