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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.
Cinchona pubescens
Source commerciale principale de quinine des Andes; cultivée mondialement pour la production antipaludique.
Cinchona pubescens is the primary botanical source of quinine, a potent antimalarial alkaloid, and has been used traditionally for fever, digestive disorders, and leg cramps. Its key active compounds include quinine, quinidine, cinchonine, and cinchonidine, along with tannins that contribute to its bitter tonic properties. Modern pharmaceutical use focuses on quinine extraction under medical supervision due to narrow therapeutic index and significant adverse effects.
Quinine acts by interfering with the parasite's ability to digest hemoglobin, accumulating in the acidic food vacuole of Plasmodium species and inhibiting heme polymerization, leading to toxic heme buildup. Quinidine, a stereoisomer, prolongs cardiac action potential by blocking sodium and potassium channels, which underlies both its antiarrhythmic efficacy and proarrhythmic risk. Cinchonine and cinchonidine have weaker antimalarial activity but contribute to the overall alkaloid profile. The bitter taste stimulates gastric acid secretion via activation of bitter taste receptors (T2Rs) in the oral cavity and gut, enhancing digestive function.
Source commerciale principale de quinine des Andes; cultivée mondialement pour la production antipaludique.
Cinchona pubescens is the primary botanical source of quinine, a potent antimalarial alkaloid, and has been used traditionally for fever, digestive disorders, and leg cramps. Its key active compounds include quinine, quinidine, cinchonine, and cinchonidine, along with tannins that contribute to its bitter tonic properties. Modern pharmaceutical use focuses on quinine extraction under medical supervision due to narrow therapeutic index and significant adverse effects.
Quinine acts by interfering with the parasite's ability to digest hemoglobin, accumulating in the acidic food vacuole of Plasmodium species and inhibiting heme polymerization, leading to toxic heme buildup. Quinidine, a stereoisomer, prolongs cardiac action potential by blocking sodium and potassium channels, which underlies both its antiarrhythmic efficacy and proarrhythmic risk. Cinchonine and cinchonidine have weaker antimalarial activity but contribute to the overall alkaloid profile. The bitter taste stimulates gastric acid secretion via activation of bitter taste receptors (T2Rs) in the oral cavity and gut, enhancing digestive function.