Giving a good start to a new life via maternal brain allostatic adaptations in pregnancy

Frontiers in Neuroendocrinology
John A Russell, Paula J Brunton

Abstract

Successful pregnancy requires adjustments to multiple maternal homeostatic mechanisms, governed by the maternal brain to support and enable survival of the growing fetus and placenta. Such adjustments fit the concept of allostasis (stability through change) and have a cost: allostatic load. Allostasis is driven by ovarian, anterior pituitary, placental and feto-placental hormones acting on the maternal brain to promote adaptations that support the pregnancy and protect the fetus. Many women carry an existing allostatic load into pregnancy, from socio-economic circumstances, poor mental health and in 'developed' countries, also from obesity. These pregnancies have poorer outcomes indicating negative interactions (failing allostasis) between pre-pregnancy and pregnancy allostatic loads. Use of animal models, such as adult prenatally stressed female offspring with abnormal neuroendocrine, metabolic and behavioural phenotypes, to probe gene expression changes, and epigenetic mechanisms in the maternal brain in adverse pregnancies are discussed, with the prospect of ameliorating poor pregnancy outcomes.

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Citations

Jan 30, 2019·BMJ : British Medical Journal·Bente MikkelsenJoão Breda
Jan 30, 2021·Frontiers in Neuroscience·Mariana Astiz, Henrik Oster
Apr 30, 2021·Development·Cécile DemarezMariana Astiz
Aug 20, 2021·Frontiers in Endocrinology·Ifigeneia KassotakiDimitris K Grammatopoulos

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