Composition comprising biodegradable hydrating ceramics for controlled drug delivery
First Claim
1. An injectable pharmaceutical composition comprising:
- i) one or more biodegradable hydrating ceramics;
ii) one or more expandable agents, wherein the expandable agent is present in the composition at a concentration of at least about 0.1% w/w to about 2.5% w/w;
iii) a sorbed aqueous medium wherein the sorbed aqueous medium is present in the composition at a concentration of at the most about 30% w/w to about 60% w/w of the total composition; and
iv) one or more therapeutically and/or diagnostically active substances, which is an androgen, an anti-androgen, an oestrogen, an anti-oestrogen, a gestagen, an anti-gestagen, an oligonucleotide, a progestagen, a gonadotropin-releasing hormone, a gonadotropin inhibitor, an adrenal and/or prostate enzyme inhibitor, a membrane efflux and/or membrane transport protein, an immune system modulator, an angiogenesis inhibitor, or combinations thereof, which in solid form has a ruptured structure, and wherein the composition solidifies within 20 minutes or less when stored at 37°
C.
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Accused Products
Abstract
The present invention relates to a drug carrier composition comprising i) one or more biodegradable hydrating ceramics ii) one or more expandable agents, and iii) sorbed aqueous medium which in solid form has a ruptured structure. The function of the expandable agent is to create a ruptured structure in the solidified composition, either a foam-like structure or a disintegrated structure where it is split into a large number of parts, particles, units, granules or pieces, so as to obtain an enlarged apparent surface area that is exposed to degradation or erosion upon administration. Suitable substances to obtain this surface enlarging effect are gas-forming agents or swelling agents, gelling agents or disintegrants, here referred to as expandable agents. The expandable agents may be bioresorbable or non-bioresorbable.
75 Citations
49 Claims
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1. An injectable pharmaceutical composition comprising:
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i) one or more biodegradable hydrating ceramics; ii) one or more expandable agents, wherein the expandable agent is present in the composition at a concentration of at least about 0.1% w/w to about 2.5% w/w; iii) a sorbed aqueous medium wherein the sorbed aqueous medium is present in the composition at a concentration of at the most about 30% w/w to about 60% w/w of the total composition; and iv) one or more therapeutically and/or diagnostically active substances, which is an androgen, an anti-androgen, an oestrogen, an anti-oestrogen, a gestagen, an anti-gestagen, an oligonucleotide, a progestagen, a gonadotropin-releasing hormone, a gonadotropin inhibitor, an adrenal and/or prostate enzyme inhibitor, a membrane efflux and/or membrane transport protein, an immune system modulator, an angiogenesis inhibitor, or combinations thereof, which in solid form has a ruptured structure, and wherein the composition solidifies within 20 minutes or less when stored at 37°
C. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification