PMID- 30058429 OWN - NLM STAT- MEDLINE DCOM- 20200804 LR - 20211204 IS - 1814-1412 (Electronic) IS - 1562-2975 (Linking) VI - 20 IP - 7 DP - 2019 Sep TI - Chronic social defeat stress differentially regulates the expression of BDNF transcripts and epigenetic modifying enzymes in susceptible and resilient mice. PG - 555-566 LID - 10.1080/15622975.2018.1500029 [doi] AB - Objectives: Although stress is considered a primary risk factor for neuropsychiatric disorders, a majority of individuals are resilient to the effects of stress exposure and successfully adapt to adverse life events, while others, the so-called susceptible individuals, may have problems to properly adapt to environmental changes. However, the mechanisms underlying these different responses to stress exposure are poorly understood.Methods: Adult male C57BL/6J mice were exposed to chronic social defeat stress protocol and levels of brain derived neurotrophic factor (BDNF) transcripts and epigenetic modifying enzymes were analysed by real-time PCR in the hippocampus (HPC) and prefrontal cortex (PFC) of susceptible and resilient mice.Results: We found a selective reduction of BDNF-6 transcript in the HPC and an increase of BDNF-4 transcript in the PFC of susceptible mice. Moreover, susceptible mice showed a selective reduction of the g9a mRNA levels in the HPC, while HDAC-5 and DNMT3a mRNA levels were specifically reduced in the PFC.Conclusions: Overall, our results, showing a different expression of BDNF transcripts and epigenetic modifying enzymes in susceptible and resilient mice, suggest that stress resilience is not simply a lack of activation of stress-related pathways, but is related to the activation of additional different specific mechanisms. FAU - Mallei, Alessandra AU - Mallei A AUID- ORCID: 0000-0001-6955-4755 AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics - Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases, University of Milano, Milano, Italy. FAU - Ieraci, Alessandro AU - Ieraci A AUID- ORCID: 0000-0001-6737-7695 AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics - Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases, University of Milano, Milano, Italy. FAU - Popoli, Maurizio AU - Popoli M AUID- ORCID: 0000-0003-4670-8664 AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics - Dipartimento di Scienze Farmacologiche e Biomolecolari and Center of Excellence on Neurodegenerative Diseases, University of Milano, Milano, Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20180919 PL - England TA - World J Biol Psychiatry JT - The world journal of biological psychiatry : the official journal of the World Federation of Societies of Biological Psychiatry JID - 101120023 RN - 0 (Bdnf protein, mouse) RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Dnmt3a protein, mouse) RN - EC 2.1.1.37 (DNA (Cytosine-5-)-Methyltransferases) RN - EC 2.1.1.37 (DNA Methyltransferase 3A) RN - EC 3.5.1.98 (Hdac5 protein, mouse) RN - EC 3.5.1.98 (Histone Deacetylases) SB - IM MH - Adaptation, Psychological MH - Animals MH - Brain-Derived Neurotrophic Factor/genetics/*metabolism MH - DNA (Cytosine-5-)-Methyltransferases/genetics MH - DNA Methyltransferase 3A MH - Disease Susceptibility MH - Epigenesis, Genetic MH - Hippocampus/*enzymology MH - Histone Deacetylases/genetics MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Prefrontal Cortex/*enzymology MH - Stress, Psychological/*enzymology/genetics OTO - NOTNLM OT - Stress OT - epigenetic OT - hippocampus OT - histone-modifying enzymes OT - prefrontal cortex EDAT- 2018/07/31 06:00 MHDA- 2020/08/05 06:00 CRDT- 2018/07/31 06:00 PHST- 2018/07/31 06:00 [pubmed] PHST- 2020/08/05 06:00 [medline] PHST- 2018/07/31 06:00 [entrez] AID - 10.1080/15622975.2018.1500029 [doi] PST - ppublish SO - World J Biol Psychiatry. 2019 Sep;20(7):555-566. doi: 10.1080/15622975.2018.1500029. Epub 2018 Sep 19.