Inhibition of angiogenesis and destruction of angiogenic...

C - Chemistry – Metallurgy – 08 – B

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C08B 37/00 (2006.01)

Patent

CA 2463733

Noni juice and a protein-free, alcohol precipitate of Noni juice inhibited angiogenesis in in vitro human angiogenesis models. When growth medium contained Noni juice at least over the range from about 2.5% to about 33% (by volume), angiogenesis was blocked. Moreover, Noni juice and an ethanol precipitate were able to destroy a pre-existing angiogenic response as well as prevent the development of new vessels. Noni juice was effective in inhibiting the growth of angiogenic vessels from breast cancer explants. It will also be effective in treating cancers and non-cancerous diseases whose response includes an increase in angiogenesis, e.g., retinopathy of prematurity, neovascular glaucoma, diabetic retinopathy, and psoriasis. The primary antiangiogenic component is believed to be a carbohydrate with a molecular weight less than about 6000 Daltons. In an initial experiment, oral administration of Noni juice appeared to adversely affect the antioangiogenic component(s) in the juice.

Selon la présente invention, le jus de noni et un précipité alcoolisé dépourvu de protéines constitué de jus de noni inhibent l'angiogenèse dans des modèles d'angiogenèse humaine in vitro. Lorsque le milieu de croissance contient du jus de noni au moins au-dessus d'une plage comprise entre environ 2,5 % et environ 33 % (en volume), l'angiogenèse est bloquée. De plus, du jus de noni et un précipité d'éthanol peuvent détruire une réponse angiogénique déjà existante et empêcher le développement de nouveaux vaisseaux. Le jus de noni est efficace pour inhiber la croissance de vaisseaux angiogéniques d'explants de cancer du sein. Il est également efficace pour le traitement de cancers et de maladies non cancéreuses dont la réponse comprend une augmentation au niveau de l'angiogenèse, par exemple, la rétinopathie des prématurés, le glaucome néovasculaire, la rétinopathie diabétique et le psoriasis. On pense que le constituant antiangiogénique primaire est un glucide présentant un poids moléculaire inférieur à environ 6 000 daltons. Dans une expérience initiale, l'administration orale de jus de noni a semblé affecter négativement le(s) constituant(s) antiangiogénique(s) présent(s) dans le jus.

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