Variation in the mu-opioid receptor gene (OPRM1) moderates the influence of maternal sensitivity on child attachment
Tchalova K, Lydon J, Atkinson L, Fleming A, Kennedy J, Lecompte V, Meaney M, Moss E, O’Donnell K, O’Donnell K, Silveira P, Sokolowski M, Steiner M, Bartz J. Variation in the mu-opioid receptor gene (OPRM1) moderates the influence of maternal sensitivity on child attachment. Translational Psychiatry 2024, 14: 181. PMID: 38580654, PMCID: PMC10997775, DOI: 10.1038/s41398-024-02888-x.Peer-Reviewed Original ResearchConceptsMaternal sensitivityChild attachmentAttachment behaviorExpression of attachment behaviorLevels of maternal sensitivityOPRM1 A118G genotypeInfluence of maternal sensitivityNon-human animal researchAmbivalent attachment patternsStrange Situation paradigmMu-opioid receptor geneOPRM1 A118G polymorphismA118G genotypeChildren's attachment stylesMother-child interactionA118G polymorphismEndogenous opioid systemMinor G alleleSensitive maternal careMother-infant attachmentInfant rhesus macaquesG alleleC77G polymorphismReceptor geneSituation paradigm