2025
Impact of age-related changes in buccal epithelial cells on pediatric epigenetic biomarker research
Merrill S, Konwar C, Fatima F, Dever K, MacIsaac J, Letourneau N, Giesbrecht G, Dewey D, England-Mason G, Lewis C, Wang D, Teh A, Meaney M, Gonzalez A, Noll J, De Weerth C, Bush N, O’Donnell K, Stewart S, Kobor M. Impact of age-related changes in buccal epithelial cells on pediatric epigenetic biomarker research. Nature Communications 2025, 16: 609. PMID: 39800776, PMCID: PMC11725590, DOI: 10.1038/s41467-025-55909-8.Peer-Reviewed Original ResearchConceptsBuccal epithelial cellsAge-related changesObsessive-compulsive disorderEpithelial cellsDiurnal cortisol slopeCheek swabsImpact of age-related changesCortisol slopeAssociated with ageOral cellsDevelopmental rangeAge accelerationDNA methylation studiesHeterogeneous sampleNeutrophil proportionBiomarker researchMethylation studiesAgeSwabsWeak associationEpigenetic age
2021
Internalizing symptoms associate with the pace of epigenetic aging in childhood
Tollenaar MS, Beijers R, Garg E, Nguyen TTT, Lin DTS, MacIsaac JL, Shalev I, Kobor MS, Meaney MJ, O'Donnell KJ, de Weerth C. Internalizing symptoms associate with the pace of epigenetic aging in childhood. Biological Psychology 2021, 159: 108021. PMID: 33460784, DOI: 10.1016/j.biopsycho.2021.108021.Peer-Reviewed Original ResearchConceptsAdvanced biological agingChildhood psychiatric symptomsAge 6Longitudinal cohort studyInternalizing symptomsBiological agingChild mental healthCohort studyBuccal epithelial cellsPsychiatric symptomsSymptomsMental healthEpithelial cellsInternalizing disordersStatistical significanceAge 2.5Highest EAAExternalizing symptomsChildhoodEpigenetic agingHorvath clockGenome-wide DNA methylationEAA
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