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Teratology: general considerations and principles

R H Finnell1

  • 1Birth Defects Research Laboratory, Department of Veterinary Anatomy and Public Health, Texas A&M University, College of Veterinary Medicine, College Station, Texas 77843-4458, USA.

The Journal of Allergy and Clinical Immunology
|February 9, 1999
PubMed

Insights

Approximately 3-5% of US births have developmental defects, with 2-3% caused by teratogens. Understanding drug effects and dose-response is key to preventing these birth defects.

Area of Science:

  • Teratology
  • Developmental Toxicology
  • Pharmacology

Background:

  • Developmental defects affect 3-5% of US births.
  • Teratogen-induced malformations account for 2-3% of these defects.
  • Drug-induced abnormal development can manifest as death, malformation, growth retardation, or functional disorder.

Purpose of the Study:

  • To review the factors influencing susceptibility to drug-induced malformations.
  • To emphasize the importance of understanding drug-specific teratogenic effects.
  • To highlight the preventability of teratogen-induced birth defects.

Main Methods:

  • Literature review on teratology and drug-induced developmental abnormalities.
  • Analysis of factors affecting teratogenic outcomes.
  • Discussion of dose-response relationships in teratogenesis.

Main Results:

  • Susceptibility to drug-induced malformations depends on conceptus genotype, developmental stage, drug mechanism, tissue access, and dose.
  • Nearly all teratogen-induced birth defects are preventable.

Conclusions:

  • Clear definition of dose-response relationships is crucial for preventing teratogen-induced birth defects.
  • Preventive strategies should consider individual susceptibility factors.
  • Further research into specific drug-teratogen interactions is warranted.

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