Materials and methods for nerve grafting, selection of nerve grafts, and in vitro nerve tissue culture
First Claim
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1. A method for preparing a nerve graft suitable for subsequent implantation, the method comprising:
- degrading, by in vitro culturing, chondroitin sulfate proteoglycan of a nerve graft comprising a nerve tissue segment while maintaining an intact basal lamina tube structure of the nerve graft, thereby enhancing post-implantation axonal traversal of an interface between the nerve graft and host nerve tissue relative to a nerve graft in which chondroitin sulfate proteoglycan was not degraded; and
rendering the nerve graft acellular by killing cells in the nerve graft.
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Abstract
The subject invention pertains to compositions and methods for culturing nerve tissue in vitro and nerve grafts produced using such methods. The compositions and methods of the subject invention can be employed to restore the continuity of nerve interrupted by disease, traumatic events or surgical procedures. The invention also concerns methods for promoting repair of damaged nerve tissue using the present compositions and nerve tissue treated according to such methods.
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Citations
52 Claims
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1. A method for preparing a nerve graft suitable for subsequent implantation, the method comprising:
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degrading, by in vitro culturing, chondroitin sulfate proteoglycan of a nerve graft comprising a nerve tissue segment while maintaining an intact basal lamina tube structure of the nerve graft, thereby enhancing post-implantation axonal traversal of an interface between the nerve graft and host nerve tissue relative to a nerve graft in which chondroitin sulfate proteoglycan was not degraded; and rendering the nerve graft acellular by killing cells in the nerve graft. - 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, 46)
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28. A method for enhancing the regenerative potential of a nerve graft suitable for subsequent implantation, the method comprising:
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degrading, by in vitro culturing, chondroitin sulfate proteoglycan of a nerve graft comprising a nerve tissue segment while maintaining an intact basal lamina tube structure of the nerve graft, thereby enhancing post-implantation axonal traversal of an interface between the nerve graft and host nerve tissue relative to a nerve graft in which chondroitin sulfate proteoglycan was not degraded, wherein culturing conditions comprise a temperature within the range of about 10°
C. to about 37°
C. for a period of time within the range of about 24 hours to about 96 hours; andrendering the nerve graft acellular by killing cells in the nerve graft. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 47, 48, 49, 50, 51, 52)
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Specification