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nantenine/nandina domestica
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11 resultados
Suppressive effect of nantenine, isolated from Nandina domestica Thunberg, on the 5-hydroxy-L-tryptophan plus clorgyline-induced head-twitch response in mice.
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We investigated the effects of nantenine (9,10-Methylenedioxy-1,2 dimethoxyaporphine), a major alkaloid isolated from the fruit of Nandina domestica Thunb (Berberidaceae), on the 5-HT2A receptor-mediated head-twitch response (HTR) in mice. Intraperitoneal (i.p.) injection of nantenine (13.3, 20 and
Biphasic Tracheal Relaxation Induced by Higenamine and Nantenine From Nandina domestica THUNBERG.
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We compared the effects of the extract from fruits of Nandina domestica THUNBERG (NDE) and its constituents, higenamine and nantenine, on contractile responses in isolated guineapig trachea. NDE (1 mg/ml) caused biphasic relaxation of the trachea precontracted with high-K+ stimulation:
Biphasic tracheal relaxation induced by higenamine and nantenine from Nandina domestica Thunberg.
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We compared the effects of the extract from fruits of Nandina domestica Thunberg (NDE) and its constituents, higenamine and nantenine, on contractile responses in isolated guinea-pig trachea. NDE (1 mg/ml) caused biphasic relaxation of the trachea precontracted with high-K(+) stimulation: the fast
(+)-Nantenine isolated from Nandina domestica Thunb. inhibits adrenergic pressor responses in pithed rats.
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The effects of (+)-nantenine on various pressor responses, recently reported exerting competitive antagonistic activity at the alpha1-adrenoceptor/5-hydroxytryptamine (5-HT)2A receptor, were examined in vivo. (+)-Nantenine (0.03-3 mg/kg) caused a dose-dependent inhibition of the pressor response to
Serotonergic receptor antagonist from Nandina domestica Thunberg.
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A crude methanolic extract of the fruit of Nandina domestica Thunberg strongly inhibits serotonin-induced contractions of the rabbit aorta. The extract of the fruit has been fractionated to afford nantenine (O- methyldomesticine ) as the active agent.
Online structural elucidation of alkaloids and other constituents in crude extracts and cultured cells of Nandina domestica by combination of LC-MS/MS, LC-NMR, and LC-CD analyses.
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The combination of NMR, MS, and CD data permitted the structural elucidation including the absolute configuration of the known alkaloids and unknown components in the extract matrix solution of Nandina domestica without isolation and sample purification prior to the coupling experiments. Unstable
A new alkaloid from the fruit of Nandina domestica Thunb.
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A new steroidal alkaloid, (20S,22R,24R)-24-ethyl-3-oxocholest-4-en-22-amino, named as nandsterine (1), together with 10 known alkaloids, palmatine (2), O-methylbulbocapnine (3), nantenine (4), dehydronantenine (5), glaucine (6), didehydroglaucine (7), dehydrocorydaline (8), jatrorrhizine (9),
The extract from Nandina domestica THUNBERG inhibits histamine- and serotonin-induced contraction in isolated guinea pig trachea.
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Although the fruit of Nandina domestica THUNBERG (ND) has been used to treat respiratory disorders such as coughing and breathing difficulty in Japan for many years, very little is known about mechanisms underlying its action. In the present study, we investigated effects of the crude extract from
Two new isoquinoline alkaloids from the seeds of Nandina domestica.
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Two new isoquinoline alkaloids, 6 R,6aS-N-nantenine Nβ-oxide (1), 6S,6aS-N-nantenine Nα-oxide (2), along with nine known alkaloids, nantenine (3), oxonantenine (4), protopine (5),
Extract from Nandina domestica inhibits lipopolysaccharide-induced cyclooxygenase-2 expression in human pulmonary epithelial A549 cells.
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Extract from fruits of Nandina domestica THUNBERG (NDE) has been used to improve cough and breathing difficulty in Japan for many years. To explore whether NDE may alleviate respiratory inflammation, we investigated its effect on expression of cyclooxygenase-2 (COX-2) and production of prostaglandin
Beta2-adrenoceptor-mediated tracheal relaxation induced by higenamine from Nandina domestica Thunberg.
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The fruit of Nandina domestica Thunberg (ND, Berberidaceae) has been used to improve cough and breathing difficulties in Japan for many years, but very little is known about the constituent of ND responsible for this effect. We have recently reported that the crude extract from ND (NDE) inhibits
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