PMID- 17074054 OWN - NLM STAT- MEDLINE DCOM- 20061221 LR - 20131121 IS - 0953-816X (Print) IS - 0953-816X (Linking) VI - 24 IP - 8 DP - 2006 Oct TI - Dietary restriction changes behaviours in brain-derived neurotrophic factor heterozygous mice: role of serotonergic system. PG - 2335-44 AB - Accumulating evidence has suggested that brain-derived neurotrophic factor (BDNF) plays a role in eating behaviours, and that BDNF-heterozygous (+/-) mice exhibit abnormal behaviours (e.g. obesity, anxiety and aggression). The present study was undertaken to determine whether or not dietary restriction (DR) alters the behaviours in BDNF(+/-) mice, as DR has been shown to exert a number of beneficial effects on the brain. Eight-week-old male wild-type (+/+) and BDNF(+/-) mice were divided into two groups, ad libitum (AL) diet group and DR group, for 16 weeks. After carrying out a behavioural evaluation, we determined the BDNF mRNA levels, as well as mRNA levels for subtypes (5-HT(1A), 5-HT(1B), 5-HT(2A) and 5-HT(2C)) of the 5-HT receptor and 5-HT transporter (5-HTT), protein levels of BDNF and concentrations of 5-HT and 5-HIAA in the hypothalamus, hippocampus and frontal cortex. DR significantly ameliorated behaviours including obesity, anxiety and aggression in BDNF(+/-) mice. The concentrations of 5-HT and 5-HIAA in the frontal cortex, and 5-HT in the hippocampus, of BDNF(+/-) mice were significantly lower than those of wild-type mice. Interestingly, DR significantly increased the levels of 5-HT and 5-HIAA in the frontal cortex of BDNF(+/-) mice. These findings suggest that DR may alter the behaviours in BDNF(+/-) mice, and that the 5-HT system may be implicated in the beneficial effects of DR on these behaviours. FAU - Koizumi, Hiroki AU - Koizumi H AD - Department of Psychiatry, Chiba University Graduate School of Medicine, Chiba, Japan. FAU - Hashimoto, Kenji AU - Hashimoto K FAU - Iyo, Masaomi AU - Iyo M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - France TA - Eur J Neurosci JT - The European journal of neuroscience JID - 8918110 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (RNA, Messenger) RN - 333DO1RDJY (Serotonin) RN - 54-16-0 (Hydroxyindoleacetic Acid) SB - IM MH - Aggression/physiology MH - Animals MH - Anxiety/psychology MH - Behavior, Animal/*physiology MH - Body Weight/physiology MH - Brain-Derived Neurotrophic Factor/*genetics/metabolism MH - Chromatography, High Pressure Liquid MH - Data Interpretation, Statistical MH - Eating/physiology MH - Enzyme-Linked Immunosorbent Assay MH - Exploratory Behavior/physiology MH - Food Deprivation/*physiology MH - Heterozygote MH - Hydroxyindoleacetic Acid/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Obesity/physiopathology/psychology MH - RNA, Messenger/biosynthesis MH - Reverse Transcriptase Polymerase Chain Reaction MH - Serotonin/metabolism/*physiology EDAT- 2006/11/01 09:00 MHDA- 2006/12/22 09:00 CRDT- 2006/11/01 09:00 PHST- 2006/11/01 09:00 [pubmed] PHST- 2006/12/22 09:00 [medline] PHST- 2006/11/01 09:00 [entrez] AID - EJN5094 [pii] AID - 10.1111/j.1460-9568.2006.05094.x [doi] PST - ppublish SO - Eur J Neurosci. 2006 Oct;24(8):2335-44. doi: 10.1111/j.1460-9568.2006.05094.x.