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Ce produit n'est pas destiné à diagnostiquer, traiter, guérir ou prévenir toute maladie. Ces déclarations n'ont pas été évaluées par la Food and Drug Administration.
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Ces informations sont fournies à titre éducatif uniquement et ne remplacent pas un avis médical professionnel, un diagnostic ou un traitement. Consultez toujours votre professionnel de santé avant d'utiliser des plantes, surtout si vous êtes enceinte, allaitez, prenez des médicaments ou avez une condition médicale.
Lycoris radiata
Autumn-blooming bulb of East Asia with spidery red flowers, source of galantamine used for Alzheimers.
Lycoris radiata, an autumn-blooming bulb native to East Asia, is the natural source of galantamine, a centrally acting acetylcholinesterase inhibitor used in Alzheimer's disease therapy. The plant contains toxic alkaloids such as lycorine and narciclasine, which limit its use to pharmaceutical extraction; raw ingestion can cause severe gastrointestinal and neurological toxicity. Key active compounds include galantamine, lycorine, lycoricidine, and narciclasine, with emerging research into anticancer, anti-inflammatory, and antimicrobial properties.
Galantamine, a tertiary alkaloid, reversibly and competitively inhibits acetylcholinesterase (AChE), increasing synaptic acetylcholine levels in the brain, and also allosterically modulates nicotinic acetylcholine receptors (nAChRs), enhancing cholinergic neurotransmission. Lycorine exerts pro-apoptotic effects via caspase activation and mitochondrial pathway disruption in cancer cells, while also inhibiting protein synthesis. Narciclasine and lycoricidine interfere with ribosomal function and induce cell cycle arrest, contributing to the plant's cytotoxic and anti-inflammatory activities through modulation of NF-κB and MAPK pathways.
Autumn-blooming bulb of East Asia with spidery red flowers, source of galantamine used for Alzheimers.
Lycoris radiata, an autumn-blooming bulb native to East Asia, is the natural source of galantamine, a centrally acting acetylcholinesterase inhibitor used in Alzheimer's disease therapy. The plant contains toxic alkaloids such as lycorine and narciclasine, which limit its use to pharmaceutical extraction; raw ingestion can cause severe gastrointestinal and neurological toxicity. Key active compounds include galantamine, lycorine, lycoricidine, and narciclasine, with emerging research into anticancer, anti-inflammatory, and antimicrobial properties.
Galantamine, a tertiary alkaloid, reversibly and competitively inhibits acetylcholinesterase (AChE), increasing synaptic acetylcholine levels in the brain, and also allosterically modulates nicotinic acetylcholine receptors (nAChRs), enhancing cholinergic neurotransmission. Lycorine exerts pro-apoptotic effects via caspase activation and mitochondrial pathway disruption in cancer cells, while also inhibiting protein synthesis. Narciclasine and lycoricidine interfere with ribosomal function and induce cell cycle arrest, contributing to the plant's cytotoxic and anti-inflammatory activities through modulation of NF-κB and MAPK pathways.