Keyword search (3,448 papers available)


DNA methylation differences in stress-related genes, functional connectivity and gray matter volume in depressed and healthy adolescents.

Author(s): Chiarella J, Schumann L, Pomares FB, Frodl T, Tozzi L, Nemoda Z, Yu P, Szyf M, Khalid-Khan S, Booij L

J Affect Disord. 2020 Jun 15;271:160-168 Authors: Chiarella J, Schumann L, Pomares FB, Frodl T, Tozzi L, Nemoda Z, Yu P, Szyf M, Khalid-Khan S, Booij L

Article GUID: 32479312
Peripheral DNA methylation of HPA axis-related genes in humans: Cross-tissue convergence, two-year stability and behavioural and neural correlates.

Author(s): Di Sante J, Ismaylova E, Nemoda Z, Gouin JP, Yu WJ, Caldwell W, Vitaro F, Szyf M, Tremblay RE, Booij L

Psychoneuroendocrinology. 2018 11;97:196-205 Authors: Di Sante J, Ismaylova E, Nemoda Z, Gouin JP, Yu WJ, Caldwell W, Vitaro F, Szyf M, Tremblay RE, Booij L

Article GUID: 30059826
Serotonin transporter gene promoter methylation in peripheral cells in healthy adults: Neural correlates and tissue specificity.

Author(s): Ismaylova E, Di Sante J, Szyf M, Nemoda Z, Yu WJ, Pomares FB, Turecki G, Gobbi G, Vitaro F, Tremblay RE, Booij L

Eur Neuropsychopharmacol. 2017 10;27(10):1032-1041 Authors: Ismaylova E, Di Sante J, Szyf M, Nemoda Z, Yu WJ, Pomares FB, Turecki G, Gobbi G, Vitaro F, Tremblay RE, Booij L

Article GUID: 28774705
Epigenetic Changes of FKBP5 as a Link Connecting Genetic and Environmental Risk Factors with Structural and Functional Brain Changes in Major Depression.

Author(s): Tozzi L, Farrell C, Booij L, Doolin K, Nemoda Z, Szyf M, Pomares FB, Chiarella J, O'Keane V, Frodl T

Neuropsychopharmacology. 2018 04;43(5):1138-1145 Authors: Tozzi L, Farrell C, Booij L, Doolin K, Nemoda Z, Szyf M, Pomares FB, Chiarella J, O'Keane V, Frodl T

Article GUID: 29182159
Serotonin transporter promoter methylation in peripheral cells and neural responses to negative stimuli: A study of adolescent monozygotic twins.

Author(s): Ismaylova E, Lévesque ML, Pomares FB, Szyf M, Nemoda Z, Fahim C, Vitaro F, Brendgen M, Dionne G, Boivin M, Tremblay RE, Booij L

Transl Psychiatry. 2018 08 08;8(1):147 Authors: Ismaylova E, Lévesque ML, Pomares FB, Szyf M, Nemoda Z, Fahim C, Vitaro F, Brendgen M, Dionne G, Boivin M, Tremblay RE, Booij L

Article GUID: 30089832
DNA methylation differences at the glucocorticoid receptor gene in depression are related to functional alterations in hypothalamic-pituitary-adrenal axis activity and to early life emotional abuse.

Author(s): Farrell C, Doolin K, O' Leary N, Jairaj C, Roddy D, Tozzi L, Morris D, Harkin A, Frodl T, Nemoda Z, Szyf M, Booij L, O'Keane V

Psychiatry Res. 2018 07;265:341-348 Authors: Farrell C, Doolin K, O' Leary N, Jairaj C, Roddy D, Tozzi L, Morris D, Harkin A, Frodl T, Nemoda Z, Szyf M, Booij L, O'Keane V

Article GUID: 29793048
Title:Serotonin transporter promoter methylation in peripheral cells and neural responses to negative stimuli: A study of adolescent monozygotic twins.
Authors:Ismaylova E,  Lévesque ML,  Pomares FB,  Szyf M,  Nemoda Z,  Fahim C,  Vitaro F,  Brendgen M,  Dionne G,  Boivin M,  Tremblay RE,  Booij L
Link:https://www.ncbi.nlm.nih.gov/pubmed/30089832?dopt=Abstract
DOI:10.1038/s41398-018-0195-6
Category:Transl Psychiatry
PMID:30089832
Dept Affiliation: PSYCHOLOGY
1 CHU Sainte-Justine Research Centre, Montreal, Canada.
2 Department of Psychiatry, University of Montreal, Montreal, Canada.
3 Department of Psychology, Concordia University, Montreal, Canada.
4 Department of Pharmacology and Therapeutics, McGill University, Montreal, Canada.
5 School of Psychoeducation, University of Montreal, Montreal, Canada.
6 Department of Psychology, University of Quebec à Montreal, Montreal, Canada.
7 School of Psychology, University of Laval, Quebec, Canada.
8 Institute of Genetic, Neurobiological, and Social Foundations of Child Development, Tomsk State University, Tomsk, Russian Federation.
9 Department of Psychology, University of Montreal, Montreal, Canada.
10 School of Public Health, Physiotherapy and Sports Science, University College Dublin, Dublin, Ireland.
11 CHU Sainte-Justine Research Centre, Montreal, Canada. linda.booij@concordia.ca.
12 Department of Psychiatry, University of Montreal, Montreal, Canada. linda.booij@concordia.ca.
13 Department of Psychology, Concordia University, Montreal, Canada. linda.booij@concordia.ca.

Description:

Serotonin transporter promoter methylation in peripheral cells and neural responses to negative stimuli: A study of adolescent monozygotic twins.

Transl Psychiatry. 2018 08 08;8(1):147

Authors: Ismaylova E, Lévesque ML, Pomares FB, Szyf M, Nemoda Z, Fahim C, Vitaro F, Brendgen M, Dionne G, Boivin M, Tremblay RE, Booij L

Abstract

Several studies have examined associations between peripheral DNA methylation patterns of the serotonin transporter gene (SLC6A4) promoter and symptoms of depression and anxiety. The SLC6A4 promoter methylation has also been associated with frontal-limbic brain responses to negative stimuli. However, it is unclear how much of this association is confounded by DNA sequence variations. We utilized a monozygotic-twin within-pair discordance design, to test whether DNA methylation at specific CpG sites in the SLC6A4 promoter of peripheral cells is associated with greater frontal-limbic brain responses to negative stimuli (sadness and fear), independently of DNA sequence effects. In total 48 pairs of healthy 15-year-old monozygotic twins from the Quebec Newborn Twin Study, followed regularly since birth, underwent functional magnetic resonance imaging while conducting an emotion-processing task. The SLC6A4 promoter methylation level was assessed in saliva samples using pyrosequencing. Relative to the co-twins with lower SLC6A4 promoter methylation levels, twins with higher peripheral SLC6A4 methylation levels showed greater orbitofrontal cortical (OFC) activity and left amygdala-anterior cingulate cortex (ACC) and left amygdala-right OFC connectivity in response to sadness as well as greater ACC-left amygdala and ACC-left insula connectivity in response to fearful stimuli. By utilising a monozygotic-twin design, we provided evidence that associations between peripheral SLC6A4 promoter methylation and frontal-limbic brain responses to negative stimuli are, in part, independent of DNA sequence variations. Although causality cannot be determined here, SLC6A4 promoter methylation may be one of the mechanisms underlying how environmental factors influence the serotonin system, potentially affecting emotional processing through frontal-limbic areas.

PMID: 30089832 [PubMed - indexed for MEDLINE]