2023
Associations between epigenetic aging and childhood peer victimization, depression, and suicidal ideation in adolescence and adulthood: A study of two population-based samples
Perret L, Geoffroy M, Barr E, Parnet F, Provencal N, Boivin M, O'Donnell K, Suderman M, Power C, Turecki G, Ouellet-Morin I. Associations between epigenetic aging and childhood peer victimization, depression, and suicidal ideation in adolescence and adulthood: A study of two population-based samples. Frontiers In Cell And Developmental Biology 2023, 10: 1051556. PMID: 36712964, PMCID: PMC9879289, DOI: 10.3389/fcell.2022.1051556.Peer-Reviewed Original ResearchDepressive symptomsSuicidal ideationEpigenome-wide DNA methylationHigh riskHigher depressive symptom scoresSelf-reported depressive symptomsDepressive symptom scoresTwo-cohort studyEpigenetic agingPopulation-based sampleEpigenetic indexBritish birth cohortChildhood peer victimizationQuebec Longitudinal StudySymptom scoresCohort 1Birth cohortSymptomsDNA methylation markersCohortPace of agingCandidate gene studiesLongitudinal studyIdeationMethylation markers
2021
Salivary cytokine cluster moderates the association between caregivers perceived stress and emotional functioning in youth
Parent C, Pokhvisneva I, de Mendonça Filho EJ, O'Donnell KJ, Meaney MJ, Kee MZL, Thng G, Wing H, Adler NE, Keeton V, Pantell MS, Hessler D, Gottlieb LM, Silveira PP. Salivary cytokine cluster moderates the association between caregivers perceived stress and emotional functioning in youth. Brain Behavior And Immunity 2021, 94: 125-137. PMID: 33662503, DOI: 10.1016/j.bbi.2021.02.025.Peer-Reviewed Original ResearchConceptsCaregivers' perceived stressIL-1βIL-6Cytokine clusterChild Behavior ChecklistEmotional functioningIL-8 cytokine levelsChild emotional functioningPediatric clinic visitsProspective birth cohortHyperactivity problemsEarly life stressPerceived stressPotential intergenerational effectsUCSF cohortSystemic inflammationClinic visitsCytokine levelsInflammation levelsSalivary levelsAttention Deficit Hyperactivity ProblemsIL-8Pediatric QualityLife InventoryBirth cohort
2019
Prefrontal Cortex Dopamine Transporter Gene Network Moderates the Effect of Perinatal Hypoxic-Ischemic Conditions on Cognitive Flexibility and Brain Gray Matter Density in Children
Miguel PM, Pereira LO, Barth B, de Mendonça Filho EJ, Pokhvisneva I, Nguyen TTT, Garg E, Razzolini BR, Koh DXP, Gallant H, Sassi RB, Hall GBC, O'Donnell KJ, Meaney MJ, Silveira PP. Prefrontal Cortex Dopamine Transporter Gene Network Moderates the Effect of Perinatal Hypoxic-Ischemic Conditions on Cognitive Flexibility and Brain Gray Matter Density in Children. Biological Psychiatry 2019, 86: 621-630. PMID: 31142432, DOI: 10.1016/j.biopsych.2019.03.983.Peer-Reviewed Original ResearchConceptsExpression-based polygenic risk scoreGray matter densityBrain gray matter densityPrefrontal cortexHypoxic-ischemic conditionsHistory of exposurePrefrontal cortex expressionExecutive functionIdentification of childrenHypoxia-ischemiaPerinatal complicationsHealthy childrenRisk factorsPolygenic risk scoresHigh riskRisk scoreDopamine reuptakeBirth cohortCortex expressionPoor oxygenationImpaired executive functionBrain developmentGenetic polymorphisms
2017
Cumulative prenatal exposure to adversity reveals associations with a broad range of neurodevelopmental outcomes that are moderated by a novel, biologically informed polygenetic score based on the serotonin transporter solute carrier family C6, member 4 (SLC6A4) gene expression
Silveira PP, Pokhvisneva I, Parent C, Cai S, Rema ASS, Broekman BFP, Rifkin-Graboi A, Pluess M, O'Donnell KJ, Meaney MJ. Cumulative prenatal exposure to adversity reveals associations with a broad range of neurodevelopmental outcomes that are moderated by a novel, biologically informed polygenetic score based on the serotonin transporter solute carrier family C6, member 4 (SLC6A4) gene expression. Development And Psychopathology 2017, 29: 1601-1617. PMID: 29162172, DOI: 10.1017/s0954579417001262.Peer-Reviewed Original ResearchConceptsEarly life adversityNeurodevelopmental outcomesPrenatal adversityChild Behavior ChecklistGenetic scoreAdversity scoreLife adversityCommunity birth cohortYears of agePervasive developmental problemsMaternal smokingGestational ageBirth weightLater riskPrenatal exposureAdverse exposuresBehavioral alterationsBirth cohortSerotonin transporter geneFetal periodPostnatal influencesPrefrontal cortexRelevant single nucleotide polymorphismsSerotonin transporterPrenatal life