Methods for reducing oxidative damage

A - Human Necessities – 61 – K

Patent

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A61K 38/00 (2006.01)

Patent

CA 2554166

The invention provides a method for reducing oxidative damage in a mammal, a removed organ, or a cell in need thereof. The method comprises administering an effective amount of an aromatic cationic peptide. The aromatic cationic peptide has (a) at least one net positive charge; (b) a minimum of three amino acids; (c) a maximum of about twenty amino acids; (d) a relationship between the minimum number of net positive charges (pm) and the total number of amino acid residues (r) wherein 3pm is the largest number that is less than or equal to r+1; (e) a relationship between the minimum number of aromatic groups (a) and the total number of net positive charges (pt) wherein 3a or 2a is the largest number that is less than or equal to pt+1, except that when a is 1, pt may also be 1; and (f) at least one tyrosine or tryptophan amino acid.

Cette méthode permet de réduire les lésions par oxydation chez des mammifères, dans un organe ou une cellule prélevés chez un mammifère. Selon cette méthode, on administre une quantité efficace d'un peptide cationique aromatique. Le peptide cationique aromatique comprend (a) au moins une charge positive nette ; (b) au moins trois acides aminés ; (c) au maximum vingt acides aminés environ ; (d) une relation (r) entre le nombre minimal de charges positives nettes (p¿m?) et le nombre total de résidus d'acides aminés, 3p¿m? étant le plus grand nombre égal ou inférieur à r+1 ; (e) une relation entre le nombre minimal de groupes aromatiques (a) et le nombre total de charges positives nettes (p¿t?), 3a ou 2a étant le plus grand nombre égal ou inférieur à p¿t?+1, sauf que p¿t? peut également être égal à 1 lorsque a est égal à 1 ; et (f) au moins une tyrosine ou tryptophane comme acide aminé.

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