Green tea polyphenol alpha secretase enhancers and methods...

C - Chemistry – Metallurgy – 07 – K

Patent

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C07K 5/00 (2006.01) C07K 5/023 (2006.01)

Patent

CA 2606427

The subject invention concerns materials and methods for treating or preventing a neurodegenerative condition or disease associated with .beta.- amyloid peptide deposition in neural tissue in a person or animal by administering a therapeutically effective amount of a polyphenol, or an analog, isomer, metabolite, or prodrug thereof, that increases expression or activity of a protein that exhibits .alpha.-secretase activity. The subject invention also provides methods to increase .alpha.-secretase expression and/or activity in cells by administering polyphenol flavonoids like (-)- epigallocatechin-3~gallate (EGCG) and epicatechin (EC), two polyphenols derived from green tea and other plants and that can be produced synthetically. Furthermore, there are provided methods to decrease or inhibit the production of A.beta.1-40 or A.beta.1-42 by administering the EGCG and EC compounds, their analogs, metabolites, and prodrugs.

L'invention concerne des matériaux et des méthodes de traitement ou de prévention d'une maladie ou d'un état neurodégénératif associé au dépôt de peptide ß-amyloïde dans un tissu neuronal chez un humain ou chez un animal, par administration d'une quantité thérapeutiquement efficace d'un polyphénol, ou d'un analogue, isomère, métabolite ou promédicament de celui-ci, qui augmente l'expression ou l'activité d'une protéine présentant une activité a-sécrétase. L'invention concerne également des méthodes visant à augmenter l'expression et/ou l'activité a-sécrétase dans des cellules par administration de flavonoïdes polyphénoliques tels que l'(-)-épigallocatéchin-3-gallate (EGCG) et l'épicatéchine (EC), deux polyphénols issus du thé vert et d'autres plantes, pouvant être produits synthétiquement. L'invention concerne encore des méthodes visant à réduire ou inhiber la production d'Aß1-40 ou d'Aß1-42 par administration des composés EGCG et EC, de leurs analogues, métabolites et promédicaments.

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