Methods and compositions for treatment of free radical injury

A - Human Necessities – 61 – K

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A61K 31/195 (2006.01) A61K 31/335 (2006.01) A61K 31/70 (2006.01)

Patent

CA 2584138

Therapeutic methods and compositions useful for the prevention and/or treatment of cellular membrane damage leading to or resulting from peroxidation of the cellular membrane and a breakdown of the barrier function of the cellular membrane. A therapeutic composition includes a combination of a membrane sealing sealing surfactant and a cofactor treatment consisting of an antioxidant and a cellular energy store. To affect this goal, the permeability of damaged cellular membranes is reestablished by the membrane sealing surfactant, effectively ~sealing~ the injured membranes. To facilitate rapid tissue recovery, cellular energy levels can be reestablished through addition of a cellular energy source such as, for example, MgCl2-ATP which, serves a further dual benefit of improving the cellular ion balance. Addition of an antioxidant eliminates the generation of Reactive Oxygen intermediates and enhances the metabolism of free radicals.

L'invention concerne des méthodes et des compositions thérapeutiques utiles pour prévenir et/ou traiter un endommagement d'une membrane cellulaire pouvant être la cause ou le résultat d'une peroxydation de la membrane cellulaire et d'une interruption de la fonction barrière de la membrane cellulaire. Une composition thérapeutique renferme une combinaison d'un tensioactif d'étanchéification de membrane et d'un cofacteur constitué d'un antioxydant et d'un composé de stockage d'énergie. Selon l'invention, la perméabilité des membranes cellulaires endommagées est rétablie par le tensioactif d'étanchéification de membrane, lequel assure une "fermeture étanche" efficace des membranes endommagées. Pour permettre une régénération tissulaire rapide, les niveaux d'énergie cellulaire peuvent être rétablis par addition d'une source d'énergie cellulaire telle que, par exemple, MgCl2-ATP, qui présente en outre l'avantage d'améliorer l'équilibre ionique cellulaire. L'addition d'un antioxydant permet de supprimer la génération de produits intermédiaires d'oxygène réactif et de stimuler le métabolisme des radicaux libres.

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