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Sayfa 1 itibaren 18 Sonuçlar
Interaction of anisatin with rat brain gamma-aminobutyric acidA receptors: allosteric modulation by competitive antagonists.
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Anisatin, a toxic sesquiterpene isolated from the Japanese star anise (Illicium anisatum L.), competitively inhibited the specific binding of [3H]4'-ethynyl-4-n-propylbicycloorthobenzoate ([3H]EBOB), a non-competitive antagonist of gamma-aminobutyric acid (GABA)A receptors, to rat brain membranes
Anisatin, a potent GABA antagonist, isolated from Illicium anisatum.
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The neuropharmacological properties of anisatin were tested on the frog spinal cord and the crude synaptic membrane from rat brain. Anisatin (10(-5) M) reduced the amplitude of dorsal root potentials induced by stimulation of the adjacent dorsal root and presynaptic inhibition of the ventral root
Anisatin modulation of GABA- and pentobarbital-induced enhancement of diazepam binding in rat brain.
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Anisatin, a pure toxic substance isolated from the seeds of a Japanese plant (Illicium anisatum) acts as a picrotoxin-like, non-competitive GABA antagonist. Anisatin inhibited [3H]diazepam binding enhanced by either GABA or pentobarbital, without affecting the basal specific binding to rat brain
Anisatin modulation of temperature-dependent inhibition [3H]muscimol binding by chloride ion.
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We investigated the effects of anisatin, a pure toxic substance isolated from Illicium anisatum, and chloride ion on [3H]muscimol binding to rat brain membranes at various temperatures (0-16 degrees C). Chloride ion (100 mM) itself slightly inhibited specific [3H]muscimol binding at 0-4 degrees C
Analysis of the neurotoxin anisatin in star anise by LC-MS/MS.
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The aim of this work was to develop an analytical method capable of determining the presence of anisatin in star anise. This neurotoxin may induce severe side effects such as epileptic convulsions. It is therefore of prime importance to have rapid and accurate analytical methods able to detect and
Rapid control of Chinese star anise fruits and teas for neurotoxic anisatin by Direct Analysis in Real Time high resolution mass spectrometry.
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After ingestion, products containing Chinese star anise (Illicium verum) contaminated or adulterated with Japanese star anise (Illicium anisatum) or other Illicium species, can cause epilepsy, hallucinations, and nausea due to the rare neurotoxic sesquiterpene dilactone anisatin that is present in
[Two new sesquiterpene lactones from the pericarp of Illicium macranthum].
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Silica gel column chromatography was used for the isolation and purification of the chemical constituents of the pericarp of Illicium macranthum. From dichloromethane-EtOAc (1:1) fraction and EtOAc fraction of the methanol extracts, eleven compounds were identified on the basis of chemical and
A new phenylpropanoid glycoside from the fruits of Illicium simonsii.
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OBJECTIVE
To study the constituents and bioactivity of Illicium simonsii.
METHODS
The extracts of the fruits of Illicium simonsii were submitted to a combination of chromatographic materials, silica gel, ODS column chromatography and finally preparative HPLC to obtain eight compounds which were
New Sesquiterpene Lactones from Illicium floridanum
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In continuation of our phytochemical investigation of Illicium floridanum Ellis (American star anise, star bush), three new sesquiterpene lactones possessing the anisatin-type carbon skeleton (8,9-seco-prezizaane skeleton), 14-acetoxy-3-oxofloridanolide (1), 13-acetoxy-14-(n-butyryloxy)floridanolide
Henrylactones A-E and anti-HBV constituents from Illicium henryi.
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Five new sesquiterpene lactones, henrylactones A-E ( 1- 5), together with ten known compounds: cycloparvifloralone ( 6), tashironin ( 7), tashironin A ( 8), neoanisatin ( 9), anisatin ( 10), anislactone B ( 11), 7- O-acetylanislactone B ( 12), merrillianolide ( 13), cyclomerrillianolide ( 14) and
[Studies on the toxic constituents of Illicium simonsii Maxim].
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A new sesquiterpenelactone compound was isolated along with the known anisatin and shikimic acid from pericarps of the fruit of Illicium simonsii Maxim., family Magnoliaceae, collected in Sichuan province. This new sesquiterpene lactone compound exhibited high toxicity in mice. The structure of
Neurotropic components from star anise (Illicium verum Hook. fil.)
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Three new neurotropic sesquiterpenoids, veranisatins A, B and C, were isolated from star anise (Illicium verum Hook. fil., Illiciaceae). Veranisatins showed convulsion and lethal toxicity in mice at a dose of 3 mg/kg (p.o.), and at lower doses they caused hypothermia. Veranisatin A and the related
The molecular structure of 2alpha-hydroxyneoanisatin and structure-activity relationships among convulsant sesquiterpenes of the seco-prezizaane and picrotoxane types.
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The molecular structure of 2alpha-hydroxyneoanisatin, a positional isomer of the potent neurotoxin anisatin, was determined by X-ray crystallographic analysis. This compound and four further seco-prezizaane type sesquiterpene lactones previously isolated from Illicium floridanum, which represent
Combination of TLC and HPLC-MS/MS methods. Approach to a rational quality control of Chinese star anise.
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In this study, a methodological approach for an effective and reliable quality control of Chinese star anise (Illicium verum Hook. F.) is developed and validated. A combined method of TLC and HPLC-MS/MS was used for differentiation of various Illicium species, especially Chinese and Japanese star
[An epidemic of epileptic seizures after consumption of herbal tea].
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At the end of September 2001 the Inspectorate for Health Protection and Veterinary Public Health and the National Poisons Control Centre (NPCC) were informed about adverse health effects after consumption of a herbal tea. During consultations it was suggested that Japanese star anise (Illicium
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- Görüntüye göre bitki tanıma
- Etkileşimli GPS haritası - bölgedeki bitkileri etiketleyin (yakında)
- Aramanızla ilgili bilimsel yayınları okuyun
- Şifalı bitkileri etkilerine göre arayın
- İlgi alanlarınızı düzenleyin ve haber araştırmaları, klinik denemeler ve patentlerle güncel kalın
Bir belirti veya hastalık yazın ve yardımcı olabilecek bitkiler hakkında bilgi edinin, bir bitki yazın ve karşı kullanıldığı hastalıkları ve semptomları görün.
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