PMID- 24972302 OWN - NLM STAT- MEDLINE DCOM- 20151015 LR - 20151209 IS - 1873-7544 (Electronic) IS - 0306-4522 (Linking) VI - 275 DP - 2014 Sep 5 TI - Epigenetic and epistatic interactions between serotonin transporter and brain-derived neurotrophic factor genetic polymorphism: insights in depression. PG - 455-68 LID - S0306-4522(14)00521-1 [pii] LID - 10.1016/j.neuroscience.2014.06.036 [doi] AB - Epidemiological studies have shown significant results in the interaction between the functions of brain-derived neurotrophic factor (BDNF) and 5-HT in mood disorders, such as major depressive disorder (MDD). The latest research has provided convincing evidence that gene transcription of these molecules is a target for epigenetic changes, triggered by stressful stimuli that starts in early childhood and continues throughout life, which are subsequently translated into structural and functional phenotypes culminating in depressive disorders. The short variants of 5-HTTLPR and BDNF-Met are seen as forms which are predisposed to epigenetic aberrations, which leads individuals to a susceptibility to environmental adversities, especially when subjected to stress in early life. Moreover, the polymorphic variants also feature epistatic interactions in directing the functional mechanisms elicited by stress and underlying the onset of depressive disorders. Also emphasized are works which show some mediators between stress and epigenetic changes of the 5-HTT and BDNF genes, such as the hypothalamic-pituitary-adrenal (HPA) axis and the cAMP response element-binding protein (CREB), which is a cellular transcription factor. Both the HPA axis and CREB are also involved in epistatic interactions between polymorphic variants of 5-HTTLPR and Val66Met. This review highlights some research studying changes in the epigenetic patterns intrinsic to genes of 5-HTT and BDNF, which are related to lifelong environmental adversities, which in turn increases the risks of developing MDD. CI - Copyright (c) 2014 IBRO. Published by Elsevier Ltd. All rights reserved. FAU - Ignacio, Z M AU - Ignacio ZM AD - Laboratorio de Neurociencias, Programa de Pos-Graduacao em Ciencias da Saude, Unidade Academica de Ciencias da Saude, Universidade do Extremo Sul Catarinense, Criciuma, SC, Brazil; Laboratorio de Fisiologia, Farmacologia, Patologia e Psicopatologia, Campus Chapeco, Universidade Federal da Fronteira Sul - UFFS, Chapeco, SC, Brazil. FAU - Reus, G Z AU - Reus GZ AD - Laboratorio de Neurociencias, Programa de Pos-Graduacao em Ciencias da Saude, Unidade Academica de Ciencias da Saude, Universidade do Extremo Sul Catarinense, Criciuma, SC, Brazil; Center for Experimental Models in Psychiatry, Department of Psychiatry and Behavioral Sciences, Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA. Electronic address: gislainezilli@hotmail.com. FAU - Abelaira, H M AU - Abelaira HM AD - Laboratorio de Neurociencias, Programa de Pos-Graduacao em Ciencias da Saude, Unidade Academica de Ciencias da Saude, Universidade do Extremo Sul Catarinense, Criciuma, SC, Brazil. FAU - Quevedo, J AU - Quevedo J AD - Laboratorio de Neurociencias, Programa de Pos-Graduacao em Ciencias da Saude, Unidade Academica de Ciencias da Saude, Universidade do Extremo Sul Catarinense, Criciuma, SC, Brazil; Center for Experimental Models in Psychiatry, Department of Psychiatry and Behavioral Sciences, Medical School, The University of Texas Health Science Center at Houston, Houston, TX, USA. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20140624 PL - United States TA - Neuroscience JT - Neuroscience JID - 7605074 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Serotonin Plasma Membrane Transport Proteins) SB - IM MH - Brain-Derived Neurotrophic Factor/biosynthesis/*genetics MH - Depression/*genetics MH - Epigenesis, Genetic/*genetics MH - Epistasis, Genetic/*genetics MH - Gene Expression Regulation MH - Humans MH - *Polymorphism, Single Nucleotide MH - Serotonin Plasma Membrane Transport Proteins/biosynthesis/*genetics OTO - NOTNLM OT - BDNF OT - depression OT - epigenetic OT - lifelong stress OT - polymorphism OT - serotonin transporter EDAT- 2014/06/28 06:00 MHDA- 2015/10/16 06:00 CRDT- 2014/06/28 06:00 PHST- 2014/05/21 00:00 [received] PHST- 2014/06/13 00:00 [revised] PHST- 2014/06/17 00:00 [accepted] PHST- 2014/06/28 06:00 [entrez] PHST- 2014/06/28 06:00 [pubmed] PHST- 2015/10/16 06:00 [medline] AID - S0306-4522(14)00521-1 [pii] AID - 10.1016/j.neuroscience.2014.06.036 [doi] PST - ppublish SO - Neuroscience. 2014 Sep 5;275:455-68. doi: 10.1016/j.neuroscience.2014.06.036. Epub 2014 Jun 24.