title: Central administration of IGF-I and BDNF leads to long-lasting antidepressant-like effects.
abstract: Drug development research has identified neurotrophic factors as a downstream target of chronic antidepressant treatments. In order to study their antidepressant-like effects, two neurotrophic factors, brain-derived neurotrophic factor and insulin-like growth factor I, were examined in the rat modified forced swimming test after a single icv administration. Both neurotrophins produced antidepressant-like behavioral effects in the modified rat forced swimming test, reducing immobility and increasing swimming. In contrast to currently used antidepressants, which produce acute effects in the forced swimming test, the effects of the neurotrophins were unusually long lasting and persisted at least 6 days after the treatment. Neither neurotrophic factor had an effect on locomotor activity. The results support a role for neurotrophic factors mediating the behavioral effects of antidepressant drugs.
authors.affiliation: Department of Psychiatry, University of Pennsylvania, 415 Curie Boulevard, Room 538, Philadelphia, PA 19104, USA.
authors.forename: Brian A
authors.initials: BA
authors.lastname: Hoshaw
authors.forename: Jessica E
authors.initials: JE
authors.lastname: Malberg
authors.forename: Irwin
authors.initials: I
authors.lastname: Lucki
mesh_terms: D000818:Animals; D000928:Antidepressive Agents; D019208:Brain-Derived Neurotrophic Factor / Q000008:administration & dosage / Q000494:pharmacology*; D007276:Injections, Intraventricular; D007334:Insulin-Like Growth Factor I / Q000008:administration & dosage / Q000494:pharmacology*; D009043:Motor Activity / Q000187:drug effects; D009638:Norepinephrine / Q000502:physiology; D051381:Rats; D017207:Rats, Sprague-Dawley; D012701:Serotonin / Q000502:physiology; D013550:Swimming / Q000523:psychology
chemical_list: D000928:Antidepressive Agents; D019208:Brain-Derived Neurotrophic Factor; D012701:Serotonin; D007334:Insulin-Like Growth Factor I; D009638:Norepinephrine