Herbal extract comprising a mixture of saponins obtained...

A - Human Necessities – 61 – K

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A61K 35/00 (2006.01) A61K 31/704 (2006.01) A61P 25/06 (2006.01)

Patent

CA 2497161

A pharmaceutical composition comprising a herbal extract, comprising a mixture of saponins prepared from the pericarp of Sapindus trifoliatus, with binding affinities for the receptor sites viz. GABA-A agonist site, Glutamate-AMPA site, Glutamate-Kainate site, Glutamate-NMDA agonistic site, Glutamate-NMDA glycine (strychnine insensitive) site and Sodium channel (site 2). having major mediatory role in anticonvulsant activity. A process for preparation of the herbal extract; isolation of six pure compounds from the mixture of saponins in the aqueous extract; and a pharmaceutical composition comprising the said extract in combination with pharmaceutically acceptable additives. A method of prophylactic treatment of migraine through anticonvulsant activity of the composition by its administration through intranasal route.

L'invention concerne une composition pharmaceutique contenant un extrait de plantes renfermant un mélange de saponines que l'on prépare à partir du péricarpe de <i>Sapindus trifoliatus</i> ayant des affinités de liaison pour les sites récepteurs, à savoir le site agoniste GABA-A, le site Glutamate-AMPA, le site Glutamate-Kainate, le site agoniste Glutamate-NMDA, le site Glutamate-NMDA glycine (insensible à la strychnine) et le canal sodique (site 2) jouant un rôle médiateur prépondérant en termes d'activité anti-convulsivante. L'invention concerne également un procédé de préparation de l'extrait de plantes, l'isolement de six composés purs à partir du mélange de saponines dans l'extrait aqueux, et une composition pharmaceutique comprenant ledit extrait combiné à des additifs pharmaceutiquement acceptables. Fait également l'objet de cette invention, une méthode de traitement prophylactique de la migraine grâce à l'activité anti-convulsivante de la composition par l'intermédiaire de son administration à travers la voie intranasale.

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