PMID- 16697351 OWN - NLM STAT- MEDLINE DCOM- 20070315 LR - 20220309 IS - 0006-3223 (Print) IS - 0006-3223 (Linking) VI - 61 IP - 2 DP - 2007 Jan 15 TI - Brain-derived neurotrophic factor conditional knockouts show gender differences in depression-related behaviors. PG - 187-97 AB - BACKGROUND: Indirect evidence suggests that loss of brain-derived neurotrophic factor (BDNF) from forebrain regions contributes to an individual's vulnerability for depression, whereas upregulation of BDNF in these regions is suggested to mediate the therapeutic effect of antidepressants. METHODS: We have tested this hypothesis by generating two independent lines of conditional BDNF knockout mice in which the BDNF gene is deleted selectively in forebrain. RESULTS: We show that male conditional knockouts exhibit hyperactivity but normal depression-related behaviors. In contrast, female conditional knockouts display normal locomotor activity but a striking increase in depression-like behavior. We also demonstrate that loss of BDNF in both male and female mice attenuates the actions of the antidepressant desipramine in the forced swim test. CONCLUSIONS: These gender differences in depression-related behaviors in BDNF conditional knockout mice provide direct evidence for a role of BDNF in depression. The results also support the view that forebrain BDNF may be essential in mediating antidepressant efficacy. FAU - Monteggia, Lisa M AU - Monteggia LM AD - Department of Psychiatry, The University of Texas Southwestern Medical Center, Dallas, TX 75390-9070, USA. lisa.monteggia@utsouthwestern.edu FAU - Luikart, Bryan AU - Luikart B FAU - Barrot, Michel AU - Barrot M FAU - Theobold, David AU - Theobold D FAU - Malkovska, Irena AU - Malkovska I FAU - Nef, Serge AU - Nef S FAU - Parada, Luis F AU - Parada LF FAU - Nestler, Eric J AU - Nestler EJ LA - eng GR - MH070727/MH/NIMH NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20060512 PL - United States TA - Biol Psychiatry JT - Biological psychiatry JID - 0213264 RN - 0 (Antidepressive Agents, Tricyclic) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - TG537D343B (Desipramine) SB - IM MH - Alleles MH - Animals MH - Antidepressive Agents, Tricyclic/pharmacology MH - Anxiety Disorders/genetics MH - Brain-Derived Neurotrophic Factor/*genetics MH - Depressive Disorder/*genetics MH - Desipramine/pharmacology MH - Female MH - Male MH - Mice MH - Mice, Knockout MH - Motor Activity/physiology MH - Prosencephalon/pathology MH - RNA, Messenger/genetics MH - Sex Factors MH - Stress, Psychological/complications EDAT- 2006/05/16 09:00 MHDA- 2007/03/16 09:00 CRDT- 2006/05/16 09:00 PHST- 2005/12/02 00:00 [received] PHST- 2006/03/03 00:00 [revised] PHST- 2006/03/09 00:00 [accepted] PHST- 2006/05/16 09:00 [pubmed] PHST- 2007/03/16 09:00 [medline] PHST- 2006/05/16 09:00 [entrez] AID - S0006-3223(06)00397-0 [pii] AID - 10.1016/j.biopsych.2006.03.021 [doi] PST - ppublish SO - Biol Psychiatry. 2007 Jan 15;61(2):187-97. doi: 10.1016/j.biopsych.2006.03.021. Epub 2006 May 12.