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Updated: Mar 22, 2026

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Does hypothalamic CCN3 hypersecretion confer postpartum mood disorder risk?

William Davies1,2,3

  • 1Division of Psychological Medicine and Clinical Neurosciences and Centre for Neuropsychiatric Genetics and Genomics, School of Medicine, Cardiff University, Cardiff, UK. daviesw4@cardiff.ac.uk.

Translational Psychiatry
|March 21, 2026
PubMed
Summary
This summary is machine-generated.

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Postpartum mood disorders may stem from excess CCN3 protein in the brain. Lowering CCN3 could offer new treatments for maternal mental health conditions.

Area of Science:

  • Neuroendocrinology
  • Psychiatry
  • Molecular Biology

Background:

  • Postpartum mood disorders, including postpartum psychosis, affect mothers after childbirth.
  • These conditions negatively impact maternal health, mother-child bonding, and family dynamics.
  • The underlying pathophysiology and treatment options for postpartum mood disorders remain limited.

Purpose of the Study:

  • To propose a novel hypothesis for the pathophysiology of postpartum mood disorders.
  • To investigate the role of CCN3 protein in the development of postpartum mental health issues.
  • To reconcile existing theoretical, preclinical, and clinical findings regarding postpartum psychopathology.

Main Methods:

  • Hypothesizing based on recent preclinical research.

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Last Updated: Mar 22, 2026

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  • Proposing the involvement of CCN3 protein hypersecretion from hypothalamic kisspeptin neurons.
  • Suggesting a link between oestrogen depletion, calcium metabolism, and CCN3 secretion.
  • Identifying testable predictions for human and animal models.

    • Main Results:

    • The hypothesis posits that CCN3 hypersecretion contributes to postpartum mood disorders.
    • It suggests a combination of neuroendocrine and psychological factors in disorder risk.
    • Testable predictions include a positive correlation between CCN3 levels and mood symptoms in humans.
    • CCN3 administration in animal models is predicted to induce behavioral abnormalities.

    Conclusions:

    • The proposed CCN3-centric hypothesis offers a unified explanation for postpartum psychopathology.
    • Empirical support could lead to novel therapeutic strategies, such as CCN3 downregulation.
    • This research opens avenues for alternative treatments targeting CCN3 for maternal mental health.