A Systematic Review and Meta-Analysis Investigating the Relationship between Exposures to Chemical and Non-Chemical Stressors during Prenatal Development and Childhood Externalizing Behaviors

Childhood behavioral outcomes have been linked to low quality intrauterine environments caused by prenatal exposures to both chemical and non-chemical stressors. The effect(s) from the many stressors a child can be prenatally exposed to may be influenced by complex interactive relationships that are just beginning to be understood. Chemical stressors influence behavioral outcomes by affecting the monoamine oxidase A (MAOA) enzyme, which is involved in serotonin metabolism and the neuroendocrine response to stress. Non-chemical stressors, particularly those associated with violence, have been shown to influence and exacerbate the externalizing behavioral outcomes associated with low MAOA activity and slowed serotonin metabolism. The adverse developmental effects associated with high stress and maternal drug use during pregnancy are well documented. However, research examining the combined effects of other non-chemical and chemical stressors on development and childhood outcomes as a result of gestational exposures is scarce but is an expanding field. In this systematic review, we examined the extant literature to explore the interrelationships between exposures to chemical and non-chemical stressors (specifically stressful/traumatic experiences), MAOA characteristics, and childhood externalizing behaviors. We observed that exposures to chemical stressors (recreational drugs and environmental chemicals) are significantly related to externalizing behavioral outcomes in children. We also observed that existing literature examining the interactions between MAOA characteristics, exposures to chemical stressors, and traumatic experiences and their effects on behavioral outcomes is sparse. We propose that maternal stress and cortisol fluctuations during pregnancy may be an avenue to link these concepts. We recommend that future studies investigating childhood behaviors include chemical and non-chemical stressors as well as children's inherent genetic characteristics to gain a holistic understanding of the relationship between prenatal exposures and childhood behavioral outcomes.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:17

Enthalten in:

International journal of environmental research and public health - 17(2020), 7 vom: 31. März

Sprache:

Englisch

Beteiligte Personen:

M Nilsen, Frances [VerfasserIn]
Frank, Jessica [VerfasserIn]
S Tulve, Nicolle [VerfasserIn]

Links:

Volltext

Themen:

Children
Cortisol
EC 1.4.3.4
Gestational
Hydrocortisone
Journal Article
Mental health
Meta-Analysis
Monoamine Oxidase
Psychosocial
Research Support, U.S. Gov't, Non-P.H.S.
Systematic Review
WI4X0X7BPJ
Well-being

Anmerkungen:

Date Completed 21.09.2020

Date Revised 21.09.2020

published: Electronic

Citation Status MEDLINE

doi:

10.3390/ijerph17072361

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM308298241