panax vietnamensis/nicotine

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Effects of a dammarane-type saponin, ginsenoside Rd, in nicotine-induced vascular endothelial injury

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Background: Panax notoginseng (Burk.) F.H. Chen is a traditional medicinal plant widely used to prevent and treat cardiovascular diseases. Ginsenoside Rd (GRd) is a major bioactive component of P. notoginseng, but specific effects on

Inhibitory effects of ginseng total saponin on nicotine-induced hyperactivity, reverse tolerance and dopamine receptor supersensitivity.

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A single administration of a low dose of nicotine produced hyperactivity in mice. A repeated administration of nicotine developed reverse tolerance to the ambulation-accelerating activity of nicotine and also developed postsynaptic dopamine (DA) receptor supersensitivity. The development of reverse

Effect of ginseng total saponin on extracellular dopamine release elicited by local infusion of nicotine into the striatum of freely moving rats.

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We investigated the effect of ginseng total saponin (GTS) on nicotine-induced dopamine (DA) release in the striatum of freely moving rats using an in vivo microdialysis technique. In order to further characterize the mechanism by which GTS affects DA release, the effect of GTS on K(+)-induced DA

Effect of ginseng saponins on enhanced dopaminergic transmission and locomotor hyperactivity induced by nicotine.

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Several studies have shown that behavioral hyperactivity induced by psychomotor stimulants is prevented by ginseng saponins. In an attempt to investigate whether the effect of ginseng saponins is through their inhibitory action on the enhanced dopaminergic transmission by psychomotor stimulants, we

Biotransformation of eugenol by suspension cultures of transgenic crown galls of Panax quinquefolium and suspension cultures of Nicotiana tabacum.

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The biocatalytic ability of transgenic crown galls of Panax quinquefolium was evaluated by using eugenol (1) as a substrate and suspension cultures of Nicotiana tabacum as control system. Three biotransformed products, namely: 2-methoxy-4-(2-propenyl)phenyl-O-β-D-glucopyranoside (2, 67.11%),

Ginseng total saponin inhibits nicotine-induced hyperactivity and conditioned place preference in mice.

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A single or repeated administration of nicotine in mice produced hyperactivity and conditioned place preference (CPP). Postsynapticdopamine (DA) receptor supersensitivity was also developed in nicotine-induced CPP mice. The hyperactivity induced by nicotine was evidenced by measuring the enhanced

Modulatory effect of ginseng total saponin on dopamine release and tyrosine hydroxylase gene expression induced by nicotine in the rat.

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Several studies have demonstrated that behavioral activation induced by psychostimulants is prevented by ginseng total saponin (GTS), which has been known to act on the central dopaminergic system. In an attempt to investigate whether the effect of GTS is through its inhibitory action on the

Dammarenediol-II production confers TMV tolerance in transgenic tobacco expressing Panax ginseng dammarenediol-II synthase.

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Panax ginseng is one of the famous medicinal plants. Ginsenosides, a class of tetracyclic triterpene saponins, are mainly responsible for its pharmacological activity. Most ginsenosides are composed of dammarenediol-II aglycone with various sugar moieties. Dammarenediol-II synthase is the first

Production of ginsenoside aglycone (protopanaxatriol) and male sterility of transgenic tobacco co-overexpressing three Panax ginseng genes: PgDDS, CYP716A47, and CYP716A53v2.

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Background

Protopanaxatriol (PPT) is an aglycone of ginsenosides, which has high medicinal values. Production of PPT from natural ginseng plants requires artificial deglycosylation procedures of ginsenosides via enzymatic or physicochemical treatments. Metabolic engineering could

Transcriptome analysis of 1- and 3-year-old Panax notoginseng roots and functional characterization of saponin biosynthetic genes DS and CYP716A47-like.

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Transcriptome analysis revealed high expression of saponin biosynthetic genes may account for highly accumulated saponins in 3-year-old Panax notoginseng roots and DS and CYP716A47 - like were functionally verified by transgenic tobacco. Panax notoginseng is a well-known traditional medical herb

[Functional analysis of a chitinase gene PnCHI1 from Panax notoginseng].

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Chitinases, a glycosidase enzyme that hydrolyzes chitin to N-acetylglucosamine, are widely found in plant cells, and they are an important part of plant antifungal defense system. The function of a Panax notoginseng chitinase gene PnCHI1 was characterized in this paper. Expression vector of PnCHI1

First Report of Tomato yellow leaf curl China virus with Betasatellite Infecting Panax notoginseng.

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Panax notoginseng, an important medicinal herb commonly known as notoginseng, san qi, or tian qi, is in the family Araliaceae. The herb is mainly cultivated in Guangxi and Yunnan provinces of southern China for its root, which is used in Chinese herbal medicine to treat various blood disorders. In

First Report of Bacterial Leaf Spot Disease Caused by Pseudomonas syringae pv. syringae on Panax notoginseng.

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Panax notoginseng is a species that produces a rare type of Chinese herbal medicine and is cultivated primarily in Yunnan Province. P. notoginseng has a 3-year-long crop cycle before harvest. A new bacterial disease was observed on P. notoginseng plants in the Wenshan Mountain area of Yunnan in

Construction and transformation of expression vector containing Panax japonicus SS gene.

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Panax japonicus C.A. Meyer, a perennial herb belonging to the Araliaceae ginseng genus, is one of the seven rare and endangered Chinese medical herbs. By cloning the SS segment, the expression vectors pCXSN-PjSS and pCXSN-antiPjSS were constructed and introduced into Agrobactria LBA4404, which is

Osmotin-like protein gene from Panax notoginseng is regulated by jasmonic acid and involved in defense responses to Fusarium solani.

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Osmotin and osmotin-like proteins (OLPs) play important roles in plant defense responses. The full-length cDNA sequence of an OLP gene was cloned from Panax notoginseng using rapid amplification of cDNA-end technology and named PnOLP1. A qRT-PCR analysis showed that the signaling molecules methyl

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