Agent for activating a neuron

2:

• The agent according to claim 1, wherein the neuron is a brain neuron.

3:

• The agent according to claim 1, wherein said activating a neuron is a promotion of an extension of an axon, an axon collateral, and/or a dendrite.

4:

• The agent according to claim 1, wherein said activating a neuron is a suppression of neuronal degeneration and/or a suppression of neuronal cell death.

5:

• An agent for assisting cell transplantation comprising the agent according to claim 1.

6:

• A method of treating a neural disease comprising administering the agent according to claim 1.

7:

• The method of treating according to claim 6, wherein the neural disease is selected from the group consisting of neurodegenerative disease, cerebral tumor, multiple sclerosis, epilepsia, head trauma, cerebral infarction, cerebral stroke, and ischemia.

8:

• The method of treating according to claim 7, wherein the neurodegenerative disease is selected from the group consisting of Parkinson's disease, Alzheimer's disease, Huntington's disease, amyotrophic lateral sclerosis, dementia with Lewy bodies, spinocerebellar degeneration, progressive supranuclear palsy, and corticobasal degeneration.