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Gene-Environment Contributions to the Development of Infant Vagal Reactivity: The Interaction of Dopamine and Maternal Sensitivity

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Bibliographic Details
Title: Gene-Environment Contributions to the Development of Infant Vagal Reactivity: The Interaction of Dopamine and Maternal Sensitivity
Language: English
Authors: Propper, Cathi, Moore, Ginger A., Mills-Koonce, W. Roger
Source: Child Development. Sep-Oct 2008 79(5):1377-1394.
Availability: Blackwell Publishing. 350 Main Street, Malden, MA 02148. Tel: 800-835-6770; Tel: 781-388-8599; Fax: 781-388-8232; e-mail: customerservices@blackwellpublishing.com; Web site: http://www.blackwellpublishing.com/jnl_default.asp
Peer Reviewed: Y
Physical Description: PDF
Page Count: 18
Publication Date: 2008
Document Type: Journal Articles
Reports - Research
Descriptors: Infants, Genetics, Mothers, Biochemistry, Physiology, Predictor Variables, Child Development, Risk, Statistical Analysis, Separation Anxiety, Parent Child Relationship
DOI: 10.1111/j.1467-8624.2008.01194.x
ISSN: 0009-3920
Abstract: This study investigated dopamine receptor genes ("DRD2" and "DRD4") and maternal sensitivity as predictors of infant respiratory sinus arrhythmia (RSA) and RSA reactivity, purported indices of vagal tone and vagal regulation, in a challenge task at 3, 6, and 12 months in 173 infant-mother dyads. Hierarchical linear modeling (HLM) revealed that at 3 and 6 months, RSA withdrawal in response to maternal separation was greater (suggesting expected physiological regulation) in infants without the "DRD2" risk allele than those with the risk allele. At 12 months, infants with the risk allele who were also exposed to maternal sensitivity showed levels of RSA withdrawal comparable to infants who were not at genetic risk. Findings demonstrate the importance of developmental analysis of gene-environment interaction.
Abstractor: As Provided
Number of References: 128
Entry Date: 2008
Accession Number: EJ810338
Database: ERIC
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Description
Abstract:This study investigated dopamine receptor genes ("DRD2" and "DRD4") and maternal sensitivity as predictors of infant respiratory sinus arrhythmia (RSA) and RSA reactivity, purported indices of vagal tone and vagal regulation, in a challenge task at 3, 6, and 12 months in 173 infant-mother dyads. Hierarchical linear modeling (HLM) revealed that at 3 and 6 months, RSA withdrawal in response to maternal separation was greater (suggesting expected physiological regulation) in infants without the "DRD2" risk allele than those with the risk allele. At 12 months, infants with the risk allele who were also exposed to maternal sensitivity showed levels of RSA withdrawal comparable to infants who were not at genetic risk. Findings demonstrate the importance of developmental analysis of gene-environment interaction.
ISSN:0009-3920
DOI:10.1111/j.1467-8624.2008.01194.x