PMID- 16442134 OWN - NLM STAT- MEDLINE DCOM- 20061006 LR - 20081121 IS - 0028-3908 (Print) IS - 0028-3908 (Linking) VI - 50 IP - 7 DP - 2006 Jun TI - Transforming growth factor-alpha induces sex-specific neurochemical imbalance in the stress- and memory-associated brain structures. PG - 807-13 AB - Transforming growth factor-alpha (TGFalpha) is a well-known regulator of many developmental processes. However, its role in adult nervous system is yet unclear. Studies have shown that TGFalpha can regulate stress and memory behavior in adult mice. When TGFalpha is reduced in Waved-1 (Wa-1) mutant mice, the stress response and memory are impaired predominantly in males and only after puberty. To determine the neurochemical changes resulting from the reduced TGFalpha levels that could explain the reported behavioral outcomes, biogenic amine and amino acid levels were determined in the brain regions associated with stress and memory. Interestingly, sex-specific alterations in neurochemical levels were detected, including elevated noradrenaline and reduced glutamate levels in striatum of Wa-1 males, increased noradrenaline and reduced serotonin metabolite levels in hippocampus of Wa-1 females, reduced serotonin metabolite levels in cortex and amygdala of Wa-1 females, and reduced noradrenaline, dopamine, serotonin, glutamate and glycine levels in hypothalamus of Wa-1 females compared to their respective controls. Increased dopamine turnover in cortex and reduced dopamine and serotonin turnover in amygdala were observed in both male and female Wa-1 mice. The data indicate sex-specific alterations of specific neurochemicals as a result of reduced TGFalpha expression, which may underlie sex-dependent stress response and memory impairment in Wa-1 mice. FAU - Koshibu, Kyoko AU - Koshibu K AD - Department of Neurobiology, University of Pittsburgh, PA 15261, USA. koshibu@hifo.unizh.ch FAU - Levitt, Pat AU - Levitt P LA - eng GR - MH45507/MH/NIMH NIH HHS/United States PT - Comparative Study PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20060124 PL - England TA - Neuropharmacology JT - Neuropharmacology JID - 0236217 RN - 0 (Transforming Growth Factor alpha) SB - IM MH - Animals MH - Brain/*metabolism MH - Female MH - Male MH - Memory/*physiology MH - Mice MH - Mice, Inbred C57BL MH - Mice, Mutant Strains MH - *Sex Characteristics MH - Stress, Physiological/*metabolism/psychology MH - Transforming Growth Factor alpha/*metabolism EDAT- 2006/01/31 09:00 MHDA- 2006/10/07 09:00 CRDT- 2006/01/31 09:00 PHST- 2005/08/13 00:00 [received] PHST- 2005/11/30 00:00 [revised] PHST- 2005/12/02 00:00 [accepted] PHST- 2006/01/31 09:00 [pubmed] PHST- 2006/10/07 09:00 [medline] PHST- 2006/01/31 09:00 [entrez] AID - S0028-3908(05)00412-0 [pii] AID - 10.1016/j.neuropharm.2005.12.001 [doi] PST - ppublish SO - Neuropharmacology. 2006 Jun;50(7):807-13. doi: 10.1016/j.neuropharm.2005.12.001. Epub 2006 Jan 24.