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Related Experiment Videos

Abnormal maternal behaviour in mice previously immunized against progesterone.

M W Wang1, R B Heap, M J Taussig

  • 1AFRC Institute of Animal Physiology and Genetics Research, Babraham, Cambridge, U.K.

The Journal of Endocrinology
|August 1, 1992
PubMed
Summary

Anti-progesterone immunization causes temporary infertility in mice. Residual antibodies disrupt maternal behavior post-birth, impacting pup survival.

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Area of Science:

  • Reproductive immunology
  • Maternal-fetal interface
  • Neuroendocrinology

Background:

  • Progesterone is crucial for maintaining pregnancy and plays a role in maternal behavior.
  • Immunological approaches targeting progesterone can induce reversible infertility.
  • Understanding the impact of hormonal changes on maternal care is vital.

Purpose of the Study:

  • To investigate the effects of anti-progesterone immunization on fertility and maternal behavior in mice.
  • To determine the relationship between progesterone antibody levels and aberrant maternal responses.
  • To explore the potential mechanisms underlying impaired maternal care after induced infertility.

Main Methods:

  • Active immunization using progesterone-bovine serum albumin (BSA) conjugate.

Related Experiment Videos

  • Passive immunization with a monoclonal antibody to progesterone (DB3).
  • Assessment of fertility recovery, litter size, and maternal behaviors (pup retrieval, nursing, cannibalism).

    • Main Results:

    • Both active and passive immunization led to reversible infertility, with varying recovery times.
    • Immunized mothers exhibited significant aberrant maternal behaviors, including pup rejection and cannibalism.
    • Aberrant behavior correlated with circulating progesterone antibody levels and was most pronounced in early lactation.

    Conclusions:

    • Anti-progesterone antibodies can disrupt normal maternal behavior post-parturition.
    • Progesterone withdrawal at parturition is critical for establishing maternal responsiveness.
    • Residual antibodies may interfere with this hormonal transition, leading to impaired maternal care.