Maternal care during infancy regulates the development of neural systems mediating the expression of fearfulness in the rat
Christian Caldji,Beth Tannenbaum,Shakti Sharma,Darlene D. Francis,Paul M. Plotsky,Michael J. Meaney +5 more
TLDR
It is suggested that maternal care during infancy serves to "program" behavioral responses to stress in the offspring by altering the development of the neural systems that mediate fearfulness.Abstract:
The mothers of infant rats show individual differences in the frequency of licking/grooming and arched-back nursing (LG-ABN) of pups that contribute to the development of individual differences in behavioral responses to stress. As adults, the offspring of mothers that exhibited high levels of LG-ABN showed substantially reduced behavioral fearfulness in response to novelty compared with the offspring of low LG-ABN mothers. In addition, the adult offspring of the high LG-ABN mothers showed significantly (i) increased central benzodiazepine receptor density in the central, lateral, and basolateral nuclei of the amygdala as well as in the locus ceruleus, (ii) increased α2 adrenoreceptor density in the locus ceruleus, and (iii) decreased corticotropin-releasing hormone (CRH) receptor density in the locus ceruleus. The expression of fear and anxiety is regulated by a neural circuitry that includes the activation of ascending noradrenergic projections from the locus ceruleus to the forebrain structures. Considering the importance of the amygdala, notably the anxiogenic influence of CRH projections from the amygdala to the locus ceruleus, as well as the anxiolytic actions of benzodiazepines, for the expression of behavioral responses to stress, these findings suggest that maternal care during infancy serves to “program” behavioral responses to stress in the offspring by altering the development of the neural systems that mediate fearfulness.read more
Citations
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Journal ArticleDOI
Epigenetic programming by maternal behavior.
Ian C. G. Weaver,Nadia Cervoni,Frances A. Champagne,Ana C. D'Alessio,Shakti Sharma,Jonathan R. Seckl,Sergiy Dymov,Moshe Szyf,Michael J. Meaney +8 more
TL;DR: It is shown that an epigenomic state of a gene can be established through behavioral programming, and it is potentially reversible, suggesting a causal relation among epigenomicState, GR expression and the maternal effect on stress responses in the offspring.
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From Neurons to Neighborhoods: The Science of Early Childhood Development
TL;DR: From Neurons to Neighborhoods as discussed by the authors presents the evidence about "brain wiring" and how children learn to learn to speak, think, and regulate their behavior, and examines the effect of the climate-family, child care, community-within which the child grows.
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The enduring effects of abuse and related adverse experiences in childhood: A convergence of evidence from neurobiology and epidemiology
Robert F. Anda,Vincent J. Felitti,J. Douglas Bremner,John D Walker,Charles L. Whitfield,Bruce D Perry,Shanta R. Dube,Wayne H. Giles +7 more
TL;DR: The graded relationship of the ACE score to 18 different outcomes in multiple domains theoretically parallels the cumulative exposure of the developing brain to the stress response with resulting impairment in multiple brain structures and functions.
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Risky Families: Family Social Environments and the Mental and Physical Health of Offspring
TL;DR: It is concluded that childhood family environments represent vital links for understanding mental and physical health across the life span.
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Drug addiction, dysregulation of reward, and allostasis.
George F. Koob,Michel Le Moal +1 more
TL;DR: The view that addiction is the pathology that results from an allostatic mechanism using the circuits established for natural rewards provides a realistic approach to identifying the neurobiological factors that produce vulnerability to addiction and relapse.
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Book
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Maternal Care, Hippocampal Glucocorticoid Receptors, and Hypothalamic-Pituitary-Adrenal Responses to Stress
Dong Liu,Josie Diorio,Josie Diorio,Beth Tannenbaum,Beth Tannenbaum,Christian Caldji,Christian Caldji,Darlene D. Francis,Darlene D. Francis,Alison Freedman,Alison Freedman,Shakti Sharma,Shakti Sharma,Deborah Pearson,Deborah Pearson,Paul M. Plotsky,Paul M. Plotsky,Michael J. Meaney,Michael J. Meaney +18 more
TL;DR: It is suggested that maternal behavior serves to "program" hypothalamic-pituitary-adrenal responses to stress in the offspring.
Journal ArticleDOI
The rat brain in stereotaxic coordinates (2nd edn): by George Paxinos and Charles Watson, Academic Press, 1986. £40.00/$80.00 (264 pages) ISBN 012 547 6213
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TL;DR: The idea that the amygdala, and its many efferent projections, may represent a central fear system involved in both the expression and acquisition of conditioned fear is summarized.
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