panax stipuleanatus/tyrosine

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New dammarane-type triterpenoids from the leaves of Panax notoginseng and their protein tyrosine phosphatase 1B inhibitory activity.

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BACKGROUND Panax notoginseng has been used as a general tonic agent to invigorate human body for millennia in China and continued to be used until present. METHODS Some chromatographic methods were performed to isolate pure triterpenoids, and their structures were determined by nuclear magnetic

Anti-stress effects of ginseng via down-regulation of tyrosine hydroxylase (TH) and dopamine β-hydroxylase (DBH) gene expression in immobilization-stressed rats and PC12 cells.

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Catecholamines are among the first molecules that displayed a kind of response to prolonged or repeated stress. It is well established that long-term stress leads to the induction of catecholamine biosynthetic enzymes such as tyrosine hydroxylase (TH) and dopamine β-hydroxylase (DBH) in adrenal

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

Effect of ginseng total saponin on bovine adrenal tyrosine hydroxylase.

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Ginseng total saponin (GTS) can modulate dopaminergic activity at both presynaptic and postsynaptic dopamine receptors (Kim et al., 1998). The present study investigated the effect of GTS on the bovine adrenal tyrosine hydroxylase (TH), which catalyze L/tyrosine to DOP. GTS inhibited the bovine

Computer-aided identification of EGFR tyrosine kinase inhibitors using ginsenosides from Panax ginseng.

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Natural products have served as structural resources in the history of drug discovery for cancer therapy. Among these natural products, Korean Panax ginseng serves as a potential anti-cancer medicinal plant. To determine the anti-cancer activities of Korean P. ginseng active compounds, we performed

Enzyme Hydrolysates of Ginseng Marc Polysaccharides Promote the Phagocytic Activity of Macrophages Via Activation of TLR2 and Mer Tyrosine Kinase.

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Although ginseng marc is a by-product obtained during manufacturing of various commercial ginseng products and has been routinely discarded as a waste, it still contains considerable amounts of potential bioactive compounds, including saponins and polysaccharides. Previously, we reported that

Water-compatible molecularly imprinted polymers for selective solid phase extraction of dencichine from the aqueous extract of Panax notoginseng.

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Specific molecularly imprinted polymers for dencichine were developed for the first time in this study by the bulk polymerization using phenylpyruvic acid and dl-tyrosine as multi-templates. The photographs confirmed that molecularly imprinted polymers prepared using N,N'-methylene diacrylamide as

Molecular mechanism of panaxydol on promoting axonal growth in PC12 cells.

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Nerve growth factor (NGF) promotes axonal growth in PC12 cells primarily by regulating the RTK-RAS-MEK-ERK pathway. Panaxydol, a polyacetylene isolated from Panax notoginseng, can mimic the effects of NGF. Panaxydol promotes neurite outgrowth in PC12 cells, but its molecular mechanism remains

Protective effect of panaxatriol saponins extracted from Panax notoginseng against MPTP-induced neurotoxicity in vivo.

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OBJECTIVE Panaxatriol saponins (PTS), the main constituents extracted from Panax notoginseng, a Chinese herbal medicine, has been shown to be an effective agent on various diseases. Our previous study has demonstrated that PTS is an inducer of thioredoxin-1 (Trx-1) and has a possible potential as a

Effects of the Combination of the Main Active Components of Astragalus and Panax notoginseng on Inflammation and Apoptosis of Nerve Cell after Cerebral Ischemia-Reperfusion.

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Astragalus and Panax notoginseng are commonly used to treat cardio-cerebrovascular diseases in China and are often combined together to promote curative effect. We speculate that the enhancement of the combination on anticerebral ischemia injury may come from the main active components. The purpose

Studies on the interaction of total saponins of panax notoginseng and human serum albumin by Fourier transform infrared spectroscopy.

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Total saponins of panax notoginseng (TPNS), isolated from the roots of panax notoginseng (Burk) F.H. Chen, have been considered as the main active components of San-Chi and have various therapeutical actions. Their interactions with human serum albumin have been investigated by Fourier transformed

Tyrosinase inhibitory p-coumaric acid from ginseng leaves.

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By bioassay-guided fractionation using mushroom tyrosinase, p-coumaric acid was characterized as the principal tyrosinase inhibitor from the fresh leaves of Panax ginseng (Araliaceae). It inhibited the oxidation of L-tyrosine more strongly than that of L-3, 4-dihydroxyphenylalanine (L-DOPA) by this

Wild ginseng attenuates repeated morphine-induced behavioral sensitization in rats.

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Many studies have suggested that the behavioral and reinforcing effects of morphine are induced by hyperactivation of the mesolimbic dopaminergic system, which results in increases in locomotor activity, c-Fos expression in the nucleus accumbens (NAc), and tyrosine hydroxylase (TH) in the ventral

[Effects of panax quinquefolius saponin of stem and leaf on glucose-lipid metabolism and insulin signal transduction in insulin resistant model adipocytes].

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OBJECTIVE To observe the effects of panax quinquefolius saponin (PQS) of stem and leaf on glucose-lipid metabolism and insulin signal transduction in the insulin resistant model of adipocytes. METHODS The insulin resistant model of differentiated 3T3-L1 adipocytes was established in vitro with free

Total saponins of Panax ginseng (TSPG) promote erythroid differentiation of human CD34+ cells via EpoR-mediated JAK2/STAT5 signaling pathway.

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BACKGROUND Total saponins of Panax ginseng (TSPG), main constituents extracted from Panax ginseng, a highly valued traditional Chinese medicine, have been shown to be an effective agent on hematopoiesis. OBJECTIVE To investigate the effect and mechanism underlying in which TSPG promote human CD34(+)

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