Effects of ACTH4-10 on vestibular compensation.

ACTH4-10, a fragment of the adrenocorticotropic hormone (ACTH) molecule, has marked effects on the compensation process following unilateral labyrinthectomy. In Rana temporaria ACTH4-10-treatment (5-250 micrograms/kg) influences both the acquisition and the maintenance of the compensated state. The compensation process is slowed down by hypophysectomy but can then be restored by the administration of ACTH4-10. It is concluded that ACTH-like neuropeptides might physiologically be involved in the plastic processes underlying functional recovery from CNS lesions.