PMID- 18538870 OWN - NLM STAT- MEDLINE DCOM- 20080930 LR - 20080711 IS - 0166-4328 (Print) IS - 0166-4328 (Linking) VI - 192 IP - 2 DP - 2008 Oct 10 TI - Nature vs. nurture: can enrichment rescue the behavioural phenotype of BDNF heterozygous mice? PG - 254-8 LID - 10.1016/j.bbr.2008.04.015 [doi] AB - In earlier experiments we have demonstrated that group-housing in a rather impoverished "standard" environment can be a crucial stress factor in male C57Bl/6 mice. The present study aimed at investigating the effect of combining a probable genetic vulnerability--postulated by the "Neurotrophin Hypothesis of Depression"--with the potentially modulating influence of a stressful environment such as "impoverished" standard housing conditions. For that purpose mice with a partial deletion of brain-derived neurotrophic factor (BDNF) were group-housed under standard and enriched housing conditions and analysed in a well-established test battery for emotional behaviours. Standard group-housing affected emotional behaviour in male and female BDNF heterozygous mice, causing an increase in anxiety, changes in exploration as well as nociception. Providing the animals' cages with supplementary enrichment, however, led to a rescue of emotional alterations, which emphasises the significance of external factors and their relevance for a valid investigation of genetic aspects in these mutants as well as others, which may be examined in terms of stress-responsiveness or emotionality. FAU - Chourbaji, Sabine AU - Chourbaji S AD - Central Institute of Mental Health Mannheim (ZI), University of Heidelberg, Germany. sabine.chourbaji@zi-mannheim.de FAU - Brandwein, Christiane AU - Brandwein C FAU - Vogt, Miriam A AU - Vogt MA FAU - Dormann, Christof AU - Dormann C FAU - Hellweg, Rainer AU - Hellweg R FAU - Gass, Peter AU - Gass P LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080424 PL - Netherlands TA - Behav Brain Res JT - Behavioural brain research JID - 8004872 RN - 0 (Brain-Derived Neurotrophic Factor) SB - IM MH - Animals MH - Anxiety/physiopathology/psychology MH - Behavior, Animal/*physiology MH - Brain-Derived Neurotrophic Factor/deficiency/*genetics/physiology MH - *Environment MH - Exploratory Behavior/physiology MH - Female MH - Heterozygote MH - *Housing, Animal MH - Male MH - Maze Learning/physiology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Motor Activity/physiology MH - Pain Threshold MH - Phenotype MH - Stress, Psychological/genetics/pathology/*physiopathology EDAT- 2008/06/10 09:00 MHDA- 2008/10/01 09:00 CRDT- 2008/06/10 09:00 PHST- 2008/01/08 00:00 [received] PHST- 2008/04/14 00:00 [revised] PHST- 2008/04/17 00:00 [accepted] PHST- 2008/06/10 09:00 [pubmed] PHST- 2008/10/01 09:00 [medline] PHST- 2008/06/10 09:00 [entrez] AID - S0166-4328(08)00228-3 [pii] AID - 10.1016/j.bbr.2008.04.015 [doi] PST - ppublish SO - Behav Brain Res. 2008 Oct 10;192(2):254-8. doi: 10.1016/j.bbr.2008.04.015. Epub 2008 Apr 24.