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Claims for Patent: 8,026,284

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Claims for Patent: 8,026,284

Title:Enterically coated cystamine, cysteamine and derivatives thereof
Abstract: The disclosure provides oral cysteamine and cystamine formulations useful for treating cystinosis and neurodegenerative diseases and disorders. The formulations provide controlled release compositions that improve quality of life and reduced side-effects.
Inventor(s): Dohil; Ranjan (San Diego, CA), Schneider; Jerry (La Jolla, CA)
Assignee: The Regents of the University of California (Oakland, CA)
Application Number:11/990,869
Patent Claims: 1. A method of administering cysteamine or cystamine, or pharmaceutically acceptable salts thereof, to a patient in need thereof comprising administering to said patient a pharmaceutical composition comprising cysteamine or cystamine, or pharmaceutically acceptable salts thereof, twice per day, wherein the composition increases delivery of cysteamine or cystamine, or pharmaceutically acceptable salts thereof, to the small intestine.

2. The method of claim 1, wherein each dose of cysteamine or cystamine is about 0.5-1.0 g/m.sup.2.

3. The method of claim 2, wherein each dose of cysteamine or cystamine is about 0.7-0.8 g/m.sup.2.

4. A method of administering cysteamine or cystamine, or pharmaceutically acceptable salts thereof, to a patient in need thereof comprising administering to said patient a pharmaceutical composition comprising an enteric coating that provides increased delivery of cysteamine or cystamine, or pharmaceutically acceptable salts thereof, to the small intestine.

5. The method of claim 4, wherein the composition comprises a coating selected from the group consisting of polymerized gelatin, shellac, methacrylic acid copolymer type CNF, cellulose butyrate phthalate, cellulose hydrogen phthalate, cellulose proprionate phthalate, polyvinyl acetate phthalate (PVAP), cellulose acetate phthalate (CAP), cellulose acetate trimellitate (CAT), hydroxypropyl methylcellulose phthalate, hydroxypropyl methylcellulose acetate, dioxypropyl methylcellulose succinate, carboxymethyl ethylcellulose (CMEC), hydroxypropyl methylcellulose acetate succinate (HPMCAS), and acrylic acid polymers and copolymers formed from methyl acrylate, ethyl acrylate, methyl methacrylate and/or ethyl methacrylate with copolymers of acrylic and methacrylic acid esters.

6. The method of claim 4, wherein the enteric coating releases the cysteamine or cystamine derivative when the composition reaches the small intestine or a region of the gastrointestinal tract of a subject in which the pH is greater than pH 4.5.

7. A method of treating a subject suffering from cystinosis, comprising administering to said subject a composition comprising an enterically coated cysteamine or cystamine, or cysteamine or cystamine derivative.

8. A method of treating a subject suffering from a neurodegenerative disease, comprising administering to said subject a composition comprising an enterically coated cysteamine or cystamine, or cysteamine or cystamine derivative.

9. A method of treating a subject in need of a hepato-protectant agent, comprising administering to said subject a composition comprising an enterically coated cysteamine or cystamine, or cysteamine or cystamine derivative.

10. A method of administering cysteamine or cystamine, or pharmaceutically acceptable salts thereof, to a patient in need thereof comprising administering to said patient a pharmaceutical composition comprising cysteamine or cystamine, or pharmaceutically acceptable salts thereof, wherein the composition increases delivery of cysteamine or cystamine, or pharmaceutically acceptable salts thereof, to the small intestine and wherein the frequency of administering is less than four times daily.

11. A method of administering cysteamine or cystamine, or pharmaceutically acceptable salts thereof, to a patient in need thereof comprising administering to said patient a pharmaceutical composition comprising an enteric coating, wherein said pharmaceutical composition provides an increased time to C.sub.max compared to a cysteamine or cystamine, or pharmaceutically acceptable salts thereof, that is not enterically formulated.

12. The method of any one of claims 1 or 10, wherein the total daily dose of cysteamine or cystamine is about 1.35 g/m.sup.2/day.

13. The method of claim 1 or 10, wherein the composition increases delivery to the proximal or mid-small intestine or both.

14. The method of claim 1 or 10, wherein the composition increases delivery to one or more of the duodenum, jejunum or mid-ileum.

15. The method of claim 1 or 10, wherein the composition increases delivery to a region of the gastrointestinal tract of a subject in which the pH is greater than pH 4.5.

16. The method of any one of claims 1 or 10, wherein the patient is suffering from cystinosis.

17. The method of any one of claims 1 or 10, wherein the patient is suffering from a neurodegenerative disease.

18. The method of claim 17, wherein the neurodegenerative disease is Huntington's disease or Parkinson's disease.

19. The method of claim 16, further comprising treating the patient with a second therapeutic agent.

20. The method of any one of claims 1 or 10, wherein the patient is suffering from a metabolic disorder.

21. The method of any one of claims 1 or 10, wherein the patient is suffering from free radical damage.

22. The method of claim 17, further comprising treating the patient with a second therapeutic agent.

23. The method of claim 18, further comprising treating the patient with a second therapeutic agent.

24. The method of any of claims 1-3, or 10, wherein the pharmaceutical composition comprises an enteric coating.

25. The method of claim 24, wherein the enteric coating comprises a coating selected from the group consisting of polymerized gelatin, shellac, methacrylic acid copolymer type CNF, cellulose butyrate phthalate, cellulose hydrogen phthalate, cellulose proprionate phthalate, polyvinyl acetate phthalate (PVAP), cellulose acetate phthalate (CAP), cellulose acetate trimellitate (CAT), hydroxypropyl methylcellulose phthalate, hydroxypropyl methylcellulose acetate, dioxypropyl methylcellulose succinate, carboxymethyl ethylcellulose (CMEC), hydroxypropyl methylcellulose acetate succinate (HPMCAS), and acrylic acid polymers and copolymers formed from methyl acrylate, ethyl acrylate, methyl methacrylate and/or ethyl methacrylate with copolymers of acrylic and methacrylic acid esters.

26. The method of claim 24, wherein gastric acid levels are decreased in the subject as compared to treatment with a non-coated cysteamine.

27. The method of claim 24, wherein the cysteamine induces a significant reduction in leukocyte cystine levels compared to non-coated cysteamine.
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