Use of derivatives of succinate esters for the treatment of...

A - Human Necessities – 61 – K

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A61K 31/7034 (2006.01) A61K 31/22 (2006.01) A61K 31/7028 (2006.01) A61K 36/898 (2006.01) A61P 25/28 (2006.01)

Patent

CA 2512187

The use of extract from Wangla (coeloglossum viride (L) Hartm. Var. Bracteatum (willd.) Richter), succinate derivative esters, and a derivative and pharmaceutical acceptable salts thereof, for the manufacture of a pharmaceutical preparation for the treatment of dementia, particularly for the treatment of Alzheimer' disease and Vascular dementia. Through animal experiment, it has been demonstrated that, succinate derivative esters can improve learning and memory ability in dementia rats induced by scopolamine and cyclohexenyl imine; improve learning and memory ability in dementia rats induced by .beta. -amyloid; improve learning and memory ability in dementia rats induced by permanent ligation of bilateral carotid; and improve memory ability of normal animals. It has the advantage of high activity, low toxicity and no inhibition to cholinesterase.

La présente invention concerne l'utilisation d'un extrait de Wangla ( coeloglossum viride (L) Hartm. Var. Bracteatum (Willd.) Richter), d'esters de dérivés succinate et d'un dérivé et de sels pharmaceutiquement acceptables de cet extrait pour la fabrication d'une préparation pharmaceutique destinée au traitement de la démence, notamment au traitement de la maladie d'Alzheimer et de la démence vasculaire. Une expérimentation sur des animaux à montrer que les esters de dérivés succinate peuvent améliorer l'aptitude à l'apprentissage et à la mémorisation chez des rats atteints de démence, induits par de la scopolamine et de la cyclohexényl-imine; améliorer la capacité d'apprentissage et de mémorisation chez des rats atteints de démence, induits par beta -amyloïde ; à améliorer la capacité d'apprentissage et de mémorisation chez des rats atteints de démence, induits par ligature permanente de la carotide bilatérale; et améliorer la capacité de mémorisation d'animaux normaux. Ces esters présentent l'avantage de posséder une forte activité, une faible toxicité et aucune inhibition vis-à-vis de la cholinestérase.

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