Dopamine receptor D2 (DRD2), dopamine transporter solute carrier family C6, member 4 (SLC6A3), and catechol-O-methyltransferase (COMT) genes as moderators of the relation between maternal history of maltreatment and infant emotion regulation.
Dev Psychopathol
; 30(2): 581-592, 2018 05.
Article
em En
| MEDLINE
| ID: mdl-28803562
ABSTRACT
Although infants less than 18 months old are capable of engaging in self-regulatory behavior (e.g., avoidance, withdrawal, and orienting to other aspects of their environment), the use of self-regulatory strategies at this age (as opposed to relying on caregivers) is associated with elevated behavioral and physiological distress. This study investigated infant dopamine-related genotypes (dopamine receptor D2 [DRD2], dopamine transporter solute carrier family C6, member 4 [SLC6A3], and catechol-O-methyltransferase [COMT]) as they interact with maternal self-reported history of maltreatment to predict observed infant independent emotion regulation behavior. A community sample (N = 193) of mother-infant dyads participated in a toy frustration challenge at infant age 15 months, and infant emotion regulation behavior was coded. Buccal cells were collected for genotyping. Maternal maltreatment history significantly interacted with infant SLC6A3 and COMT genotypes, such that infants with more 10-repeat and valine alleles of SLC6A3 and COMT, respectively, relative to infants with fewer or no 10-repeat and valine alleles, utilized more independent (i.e., maladaptive) regulatory behavior if mother reported a more extensive maltreatment history, as opposed to less. The findings indicate that child genetic factors moderate the intergenerational impact of maternal maltreatment history. The results are discussed in terms of potential mechanism of Gene × Environment interaction.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Catecol O-Metiltransferase
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Filho de Pais com Deficiência
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Receptores de Dopamina D2
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Proteínas da Membrana Plasmática de Transporte de Dopamina
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Sobreviventes Adultos de Maus-Tratos Infantis
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Interação Gene-Ambiente
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Autocontrole
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Mães
Tipo de estudo:
Prognostic_studies
Limite:
Adult
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Child
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Female
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Humans
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Infant
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Male
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article