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The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...
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Related Experiment Video

Updated: Jun 19, 2026

Mouse Model of Surgical Uterine Injury and Subsequent Pregnancy Outcomes
04:08

Mouse Model of Surgical Uterine Injury and Subsequent Pregnancy Outcomes

Published on: June 27, 2025

Intersections between adverse pregnancy outcomes.

Roberta B Ness1

  • 1University of Pittsburgh, Graduate School of Public Health, Room 517 Parran Hall, 130 DeSoto Street, Pittsburgh, PA 15261, USA. repro@edc.pitt.edu.

Women'S Health (London, England)
|October 7, 2009
PubMed
Summary
This summary is machine-generated.

Reproductive failure, including infertility and miscarriage, can occur together in individuals. This suggests a single underlying cause may lead to various pregnancy complications, warranting further research into reproductive failure as a spectrum.

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Area of Science:

  • Reproductive medicine
  • Immunology
  • Maternal-fetal medicine

Background:

  • Reproductive failure manifests in diverse forms such as infertility, miscarriage, pre-eclampsia, prematurity, and intrauterine growth restriction.
  • These conditions can co-occur within individuals, suggesting shared underlying pathophysiologies.
  • The concept of reproductive failure as a spectrum remains understudied.

Purpose of the Study:

  • To explore the hypothesis that single pathophysiologies can underlie multiple reproductive morbidities.
  • To review hyperimmune responsiveness to pregnancy as a potential unifying mechanism for adverse reproductive outcomes.
  • To advocate for a broader research perspective on reproductive failure.

Main Methods:

  • Literature review focusing on the aggregation of reproductive morbidities within individuals.
  • Examination of immunological mechanisms, specifically hyperimmune responsiveness, in the context of pregnancy complications.
  • Synthesis of existing research to support the concept of reproductive failure as a spectrum.

Main Results:

  • Evidence suggests that various forms of reproductive failure are not isolated events but can aggregate within individuals.
  • Hyperimmune responsiveness to pregnancy is presented as a plausible pathophysiological process linking diverse adverse reproductive outcomes.
  • This immunological dysregulation can contribute to infertility, miscarriage, pre-eclampsia, prematurity, and intrauterine growth restriction.

Conclusions:

  • Reproductive failure should be conceptualized as a spectrum of related conditions rather than isolated events.
  • Understanding shared pathophysiologies, like hyperimmune responsiveness, is crucial for addressing multiple reproductive morbidities.
  • Further research is warranted to elucidate the spectrum of reproductive failure and its underlying mechanisms.