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<p>Postpartum mood disorders, of which postpartum psychosis is the most severe, occur shortly after childbirth in a proportion of mothers. These conditions can impact negatively and substantially on maternal health, mother-child bonding, and family dynamics, but their pathophysiology is poorly-understood, and treatment options are limited. Following recent research in a preclinical model, here, I propose that hypersecretion of the CCN3 protein from kisspeptin neurons of the hypothalamic arcuate nucleus in response to severe oestrogen depletion and/or abnormal calcium metabolism predisposes to adverse postpartum mental health. This novel idea reconciles many previous disparate theoretical, preclinical, and clinical findings with respect to postpartum psychopathology, and suggests that neuroendocrine and psychological processes act in combination to confer disorder risk. It also provides testable predictions: notably, that circulating CCN3 levels are positively-correlated with adverse postpartum mood symptoms in humans, and that CCN3 administration/over-expression in postpartum animal models induces relevant behavioural abnormalities. Empirical support for this hypothesis would indicate viable alternative therapeutic strategies e.g. pharmacological downregulation of CCN3.</p>

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Does hypothalamic CCN3 hypersecretion confer postpartum mood disorder risk?

  • 期刊论文

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  • 发表日期：

    2026年3月20日

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  • William Davies

摘要

Postpartum mood disorders, of which postpartum psychosis is the most severe, occur shortly after childbirth in a proportion of mothers. These conditions can impact negatively and substantially on maternal health, mother-child bonding, and family dynamics, but their pathophysiology is poorly-understood, and treatment options are limited. Following recent research in a preclinical model, here, I propose that hypersecretion of the CCN3 protein from kisspeptin neurons of the hypothalamic arcuate nucleus in response to severe oestrogen depletion and/or abnormal calcium metabolism predisposes to adverse postpartum mental health. This novel idea reconciles many previous disparate theoretical, preclinical, and clinical findings with respect to postpartum psychopathology, and suggests that neuroendocrine and psychological processes act in combination to confer disorder risk. It also provides testable predictions: notably, that circulating CCN3 levels are positively-correlated with adverse postpartum mood symptoms in humans, and that CCN3 administration/over-expression in postpartum animal models induces relevant behavioural abnormalities. Empirical support for this hypothesis would indicate viable alternative therapeutic strategies e.g. pharmacological downregulation of CCN3.