Claims
- 1. A composition for the sustained release of human growth hormone from a polymer matrix comprising:
- a) poly(lactide-co-glycolide); and
- b) particles of zinc-complexed human growth hormone, with a zinc cation component-to-human growth hormone molar ratio between about 4:1 and about 100:1, wherein said particles are dispersed within the poly(lactide-co-glycolide) and wherein the proportion of human growth hormone in the sustained release composition is between 10 and 30 weight percent.
- 2. The composition of claim 1 wherein the zinc cation component-to-human growth hormone molar ratio is about 10:1.
- 3. The composition of claim 2 further comprising a second metal cation component, wherein the second metal cation component is not complexed to said human growth hormone, and wherein the second metal cation component is dispersed within the polymer matrix at a concentration of at least about 1% by weight of polymer.
- 4. The composition of claim 1 wherein the poly(lactide-co-glycolide) has a lactide: glycolide ratio of 1:1.
- 5. The composition of claim 4 wherein the poly(lactide-co-glycolide) is unblocked.
- 6. The composition of claim 5 wherein the molecular weight of the poly(lactide-co-glycolide) is about 6,000 to about 31,000 Daltons.
- 7. A method of delivering human growth hormone to a subject in need thereof comprising the step of administering to said subject a composition for the sustained release of human growth hormone comprising:
- a) poly(lactide-co-glycolide); and
- b) particles of zinc-complexed human growth hormone, with a zinc cation component-to-human growth hormone molar ratio between about 4:1 and about 100:1, wherein said particles are dispersed within the poly(lactide-co-glycolide) and wherein the proportion of human growth hormone in the sustained release composition is between 10 and 30 weight percent.
- 8. The method of claim 7 wherein the zinc cation component-to-human growth hormone molar ratio is about 10:1.
- 9. The method of claim 8 further comprising a second metal cation component, wherein the second metal cation component is not complexed to said human growth hormone, and wherein the second metal cation component is dispersed within the polymer matrix at a concentration of at least about 1% by weight of polymer.
- 10. The method of claim 7 wherein the poly(lactide-co-glycolide) has a lactide: glycolide ratio of 1:1.
- 11. The method of claim 10 wherein the poly(lactide-co-glycolide) is unblocked.
- 12. The method of claim 11 wherein the molecular weight is about 6,000 to about 31,000 Daltons.
RELATED APPLICATIONS
This application is a Continuation of U.S. patent application Ser. No. 09/033,193, filed Mar. 2, 1998, now U.S. Pat. No. 5,891,478, which is a Continuation of U.S. patent application Ser. No. 08/831,604, filed Apr. 10, 1997, now abandoned, which is a Continuation of U.S. patent application Ser. No. 08/473,544, filed Jun. 7, 1995, now U.S. Pat. No. 5,654,010, which is a Continuation-in-Part of U.S. patent application Ser. No. 07/984,323, filed Dec. 2, 1992, now abandoned. All of the above are incorporated herein by reference in their entirety.
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Continuations (3)
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033193 |
Mar 1998 |
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Parent |
831604 |
Apr 1997 |
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Parent |
473544 |
Jun 1995 |
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Continuation in Parts (1)
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984323 |
Dec 1992 |
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