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Related Experiment Videos

Environmental teratogens.

R L Brent1, D A Beckman

  • 1Department of Pediatrics, Jefferson Medical School, Thomas Jefferson University, Philadelphia, Pennsylvania.

Bulletin of the New York Academy of Medicine
|March 1, 1990
PubMed
Summary
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Embryo-fetal toxicity signals for 17alpha-hydroxyprogesterone caproate in high-risk pregnancies: a review of the non-clinical literature for embryo-fetal toxicity with progestins.

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Addressing environmentally caused human birth defects.

Pediatrics in review·2001

Congenital malformations often have unknown causes, with genetics being the largest known factor. Environmental factors, though less common, are crucial for understanding and preventing birth defects.

Area of Science:

  • Medical Genetics
  • Developmental Biology
  • Teratology

Background:

  • Congenital malformations represent a significant health concern, with a substantial proportion lacking identified etiologies.
  • Understanding the causes of birth defects is critical for developing preventative strategies and improving diagnostic capabilities.
  • Current etiological classifications highlight the complexity and multifactorial nature of malformations.

Purpose of the Study:

  • To categorize the known etiologies of human congenital malformations.
  • To emphasize the importance of studying environmental factors in malformation development.
  • To explore the potential for preventing birth defects through etiological research.

Main Methods:

  • Review and synthesis of existing epidemiological data on congenital malformations.

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  • Categorization of malformations based on known causative factors (genetic, environmental).
  • Analysis of the relative contribution of different etiological categories to the overall malformation burden.

    • Main Results:

    • Approximately 65% of all malformations have unknown causes.
    • Purely genetic factors (autosomal and cytogenetic) account for an estimated 20-25% of malformations, representing the largest known etiological group.
    • Environmental causes, including maternal disease, account for 10% or fewer, with drug, chemical, or radiation exposures being less than 1%.

    Conclusions:

    • The majority of congenital malformations remain unexplained, underscoring the need for further research into their etiology.
    • Environmental factors, particularly maternal health conditions, play a role in a significant minority of malformations and are key targets for prevention.
    • Studying environmentally induced malformations is vital for advancing the understanding of teratogenesis and developing effective prevention strategies.