PMID- 26676568 OWN - NLM STAT- MEDLINE DCOM- 20171222 LR - 20231213 IS - 1559-1182 (Electronic) IS - 0893-7648 (Linking) VI - 53 IP - 10 DP - 2016 Dec TI - Sex-Specific Effects of Prenatal Stress on Bdnf Expression in Response to an Acute Challenge in Rats: a Role for Gadd45beta. PG - 7037-7047 AB - Exposure to early adversities represents a major risk factor for psychiatric disorders. We have previously shown that exposure to prenatal stress (PNS) in rats alters the developmental expression of brain-derived neurotrophic factor (Bdnf) with a specific temporal profile. However, exposure to early-life stress is known to alter the ability to cope with challenging events later in life, which may contribute to the enhanced vulnerability to stress-related disorders. Since Bdnf is also an important player for activity-dependent plasticity, we investigated whether the exposure to PNS in rats could alter Bdnf responsiveness to an acute challenge at adulthood. We found that exposure to PNS produces significant changes in Bdnf responsiveness with brain region- and gender-specific selectivity. Indeed, exposure to an acute stress upregulates Bdnf expression in the prefrontal cortex, but not in the hippocampus, of control animals. Moreover, such modulatory activity is selectively impaired in PNS female rats, an effect that was associated with changes in the modulation of the DNA demethylase Gadd45beta. Our results suggest that exposure to PNS may reprogram gene transcription through epigenetic mechanisms reducing the ability to cope under adverse conditions, a trait that is disrupted in psychiatric diseases. FAU - Luoni, A AU - Luoni A AD - Department of Pharmacological and Biomolecular Sciences, University of Milan, via Balzaretti 9, 20133, Milan, Italy. FAU - Berry, A AU - Berry A AD - Section of Behavioural Neurosciences, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161, Rome, Italy. FAU - Raggi, C AU - Raggi C AD - Section of Behavioural Neurosciences, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161, Rome, Italy. FAU - Bellisario, V AU - Bellisario V AD - Section of Behavioural Neurosciences, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161, Rome, Italy. FAU - Cirulli, F AU - Cirulli F AD - Section of Behavioural Neurosciences, Department of Cell Biology and Neurosciences, Istituto Superiore di Sanita, Viale Regina Elena 299, 00161, Rome, Italy. FAU - Riva, M A AU - Riva MA AD - Department of Pharmacological and Biomolecular Sciences, University of Milan, via Balzaretti 9, 20133, Milan, Italy. M.Riva@unimi.it. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151216 PL - United States TA - Mol Neurobiol JT - Molecular neurobiology JID - 8900963 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (RNA, Messenger) RN - 0 (Receptors, Glucocorticoid) SB - IM MH - Aging/metabolism MH - Animals MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - Female MH - Gene Expression Regulation MH - Intracellular Signaling Peptides and Proteins/*metabolism MH - Male MH - Pregnancy MH - Prenatal Exposure Delayed Effects/*genetics/pathology MH - RNA, Messenger/genetics/metabolism MH - Rats, Sprague-Dawley MH - Receptors, Glucocorticoid/metabolism MH - *Sex Characteristics MH - Stress, Physiological/genetics MH - Transcription, Genetic MH - GADD45 Proteins OTO - NOTNLM OT - Acute stress OT - Bdnf OT - Gadd45beta OT - Gender effect OT - Prenatal restraint stress EDAT- 2015/12/18 06:00 MHDA- 2017/12/23 06:00 CRDT- 2015/12/18 06:00 PHST- 2015/09/22 00:00 [received] PHST- 2015/11/29 00:00 [accepted] PHST- 2015/12/18 06:00 [pubmed] PHST- 2017/12/23 06:00 [medline] PHST- 2015/12/18 06:00 [entrez] AID - 10.1007/s12035-015-9569-4 [pii] AID - 10.1007/s12035-015-9569-4 [doi] PST - ppublish SO - Mol Neurobiol. 2016 Dec;53(10):7037-7047. doi: 10.1007/s12035-015-9569-4. Epub 2015 Dec 16.