4.7 Article

Longitudinal relation between maladaptive parenting and nonsuicidal self-injury among Chinese early adolescents: The roles of internalizing symptoms and FKBP5 gene variation

Journal

JOURNAL OF AFFECTIVE DISORDERS
Volume 331, Issue -, Pages 33-42

Publisher

ELSEVIER
DOI: 10.1016/j.jad.2023.03.034

Keywords

Maladaptive parenting; Nonsuicidal self -injury; Internalizing symptoms; FKBP5 gene variation; Gene -environment interaction

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This study investigated the indirect effect of internalizing symptoms in the relation between maladaptive parenting and nonsuicidal self-injury (NSSI) among Chinese early adolescents, and examined how FKBP5 gene variation moderates these associations. The results showed that maladaptive parenting significantly predicts adolescent NSSI after six months, and this effect was mediated by internalizing symptoms. Moreover, FKBP5 gene variation moderated both the predictive effect of maladaptive parenting on internalizing symptoms and the indirect effect of internalizing symptoms between maladaptive parenting and NSSI.
Background: While increasing research has effectively documented that maladaptive parenting is a significant risk factor for adolescent nonsuicidal self-injury, the process mechanism and gene-by-environment interaction in this relation among Chinese early adolescents are still poorly understood. Methods: In this study, a multi-informant longitudinal design was applied to investigate the indirect effect of internalizing symptoms in the relation between maladaptive parenting and nonsuicidal self-injury, and to examine how FKBP5 gene variation moderates these association. A total of 1718 Chinese Han early adolescents (44.30 % girls; Mage at Wave 1 = 10.35) and their parents participated this study. Results: The results showed that maladaptive parenting significantly predicts adolescent nonsuicidal self-injury after six months. Maladaptive parenting was also indirectly related to nonsuicidal self-injury via internalizing symptoms. Moreover, using a cumulative genetic score approach, the results showed that FKBP5 gene variation moderates the predictive effect of maladaptive parenting on internalizing symptoms and also moderates the indirect effect of internalizing symptoms between maladaptive parenting and nonsuicidal self-injury. These ef-fects were more salient among adolescents with high (versus low) FKBP5 gene related cumulative genetic score linked to heightened stress reactivity. Limitations: Our study only obtained two waves of data. Three waves of data would be more suitable for examining a mediation model. Conclusion: This study reveals the process mechanism between maladaptive parenting and nonsuicidal self-injury and highlights the significance of gene-by-environment interaction to explain the emergence of nonsuicidal self -injury among adolescents.

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