A method and product are provided for the treatment of connective tissue weakened due to destruction of tissue architecture, and in particular due to elastin degradation. The treatment agents employ certain unique properties of phenolic compounds to develop a protocol for reducing elastin degradatio
A method and product are provided for the treatment of connective tissue weakened due to destruction of tissue architecture, and in particular due to elastin degradation. The treatment agents employ certain unique properties of phenolic compounds to develop a protocol for reducing elastin degradation, such as that occurring during aneurysm formation in vasculature. According to the invention, elastin can be stabilized in vivo and destruction of connective tissue, such as that leading to life-threatening aneurysms in vasculature, can be tempered or halted all together. The treatment agents can be delivered or administered acutely or chronically according to various delivery methods, including sustained release methods incorporating perivascular or endovascular patches, use of microsphere carriers, hydrogels, or osmotic pumps.
대표청구항▼
1. A leaky balloon for repair of aneurysm of a blood vessel in a living subject comprising a balloon element and a therapeutic composition contained in the balloon element, wherein the balloon element comprises a membrane that allows the therapeutic composition to leak from the balloon element to ac
1. A leaky balloon for repair of aneurysm of a blood vessel in a living subject comprising a balloon element and a therapeutic composition contained in the balloon element, wherein the balloon element comprises a membrane that allows the therapeutic composition to leak from the balloon element to access the aneurysm,wherein the therapeutic composition is substantially free of unbound gallic acid and has a pH between about 4 and about 9, andwherein the therapeutic composition comprises a phenolic compound having a plurality of phenolic groups at an effective concentration that crosslinks elastin in the blood vessel in vivo to stabilize the blood vessel. 2. The leaky balloon of claim 1 wherein the phenolic compound is a flavonoid or a flavonoid derivative, a flavolignan or a flavolignan derivative, a phenolic rhizome or a phenolic rhizome derivative, a flavan-3-ol or a flavan-3-ol derivative, a tannin or a tannin derivative, an ellagic acid or an ellagic acid derivative, a procyanidin or a procyanidin derivative, proanthrocyanidin, anthocyanins, quercetin, (+)-catechin, (−)-epicatechin, nobotanin, epigallocatechin gallate, gallotannins, hydroxytyrosol (3,4-dihydroxy phenylethanol), oleuropein, prodelphinidin, a combination thereof, or a pharmaceutically acceptable salt thereof. 3. The leaky balloon of claim 1 wherein the phenolic compound comprises tannic acid or an analog of tannic acid, pentagalloylglucose or an analog of pentagalloylglucose, a combination thereof, or a pharmaceutically acceptable salt thereof. 4. The leaky balloon of claim 1 wherein the therapeutic composition comprises about 0.0001 w/v % and about 10 w/v % of the phenolic compound. 5. The leaky balloon of claim 1 wherein the phenolic compound stabilizes the elastin of the blood vessel through cross linking with the elastin protein. 6. The leaky balloon of claim 1 wherein the therapeutic composition further comprises a drug delivery vehicle comprising a sustained release drug delivery vehicle, a hydrogel, a perivascular drug delivery vehicle, an endovascular drug delivery vehicle, or a combination thereof. 7. The leaky balloon of claim 6 wherein the drug delivery vehicle comprises a hydrogel comprising glycosaminoglycans, polysaccharides, proteins, dextran, hyaluronic acid, chitin, heparin, collagen, elastin, keratin, albumin, polymers and copolymers of lactic acid, glycolic acid, carboxymethyl cellulose, polyacrylates, polymethacrylates, epoxides, silicones, polyols such as polypropylene glycol, polyvinyl alcohol and polyethylene glycol and their derivatives, alginates such as sodium alginate or crosslinked alginate gum, polycaprolactone, polyanhydride, pectin, gelatin, crosslinked proteins peptides and polysaccharides, or a combination thereof. 8. The leaky balloon of claim 6 wherein the therapeutic composition is encapsulated in a drug delivery vehicle. 9. The leaky balloon of claim 6 wherein the drug delivery vehicle is biodegradable. 10. A method of repairing aneurysm in a blood vessel of a living subject using the leaky balloon of claim 1, the method comprising, deploying the leaky balloon at the aneurysm in the blood vessel, andeluting the therapeutic composition from the leaky balloon to stabilize the blood vessel at the aneurysm. 11. The method of claim 10 further comprising treating the blood vessel before, during, or after the deployment of the leaky balloon with glutaraldehyde. 12. The method of claim 10 wherein the aneurysm is treated with the leaky balloon multiple times. 13. The method of claim 10 wherein the leaky balloon is deployed in the aneurysm for sufficient period of time to allow the phenolic compound to cross link the elastin of the blood vessel.
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