Treatment of hearing impairments
First Claim
1. A method for treating a hearing impairment in a mammal, comprising administering to the mammal in need of such treatment a therapeutically effective amount of a trkB or trkC agonist to promote post-natal spiral ganglia neuron protection of survival, wherein the agonist is selected from the group consisting of a neurotrophin, a chimeric neurotrophin, and a pantropic neurotrophin binding to and activating a trkB or trkC receptor, and an antibody agonist of a trkB or trkC receptor or antigen-binding fragment thereof, and wherein the hearing impairment is ototoxin induced.
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Accused Products
Abstract
Compositions and methods are provided for prophylactic or therapeutic treatment of a mammal for hearing impairments involving neuronal damage, loss, or degeneration, preferably of spinal ganglion neurons, by administration of a therapeutically effective amount of a trkB or trkC agonist, particularly a neurotrophin, more preferably NT-4/5. Also provided are improved compositions and methods for treatments requiring administration of a pharmaceutical having an ototoxic side-effect, wherein the improvement includes administering a therapeutically effective amount of a trkB or trkC agonist to treat the ototoxicity.
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Citations
25 Claims
- 1. A method for treating a hearing impairment in a mammal, comprising administering to the mammal in need of such treatment a therapeutically effective amount of a trkB or trkC agonist to promote post-natal spiral ganglia neuron protection of survival, wherein the agonist is selected from the group consisting of a neurotrophin, a chimeric neurotrophin, and a pantropic neurotrophin binding to and activating a trkB or trkC receptor, and an antibody agonist of a trkB or trkC receptor or antigen-binding fragment thereof, and wherein the hearing impairment is ototoxin induced.
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15. A method of identifying a trkB or trkC agonist that provides post-natal spiral ganglion neuron protection or survival from an ototoxin, comprising
culturing a cochlear explant, administering a candidate trkB or trkC agonist to the culture, administering an ototoxin to the culture, and determining the amount of protection or survival compared to a control culture to which the candidate trkB or trkC agonist was not administered.
- 16. A pharmaceutical composition comprising an ototoxic pharmaceutical agent capable of inducing a hearing impairment and a trkB or trkC agonist, which is present in an amount therapeutically effective for treating the hearing impairment to promote post-natal spiral ganglia neuron protection, wherein the agonist is selected from the group consisting of a neurotrophin, a chimeric neurotrophin, and a pantropic neurotrophin binding to and activating a trkB or trkC receptor, and an antibody agonist of a trkB or trkC receptor or antigen-binding fragment thereof.
- 19. An improved method for treating a mammal with a pharmaceutical that causes a hearing impairment in the mammal, the improvement comprising administering a therapeutically effective amount of a trkB or trkC agonist to the mammal in need of such treatment to treat the ototoxin-induced hearing impairment to promote post-natal spiral ganglia neuron protection or survival, wherein the agonist is selected from the group consisting of a neurotrophin, a chimeric neurotrophin, and a pantropic neurotrophin binding to and activating a trkB or trkC receptor, and an antibody agonist of a trkB or trkC receptor or antigen-binding fragment thereof.
- 21. A method for promoting post-natal spiral ganglion neuron survival prior to, upon, or after exposure to an ototoxin that causes neuronal damage, loss, or degeneration, comprising administering to the neuron an effective amount of trkB or trkC agonist to promote post-natal neuron survival, wherein the agonist is selected from the group consisting of a neurotrophin, a chimeric neurotrophin, and a pantropic neurotrophin binding to and activating a trkB or trkC receptor, and an antibody agonist of a trkB or trkC receptor or antigen-binding fragment thereof.
Specification