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Updated: Jun 6, 2026
08:28
Analysis of Congenital Heart Defects in Mouse Embryos Using Qualitative and Quantitative Histological Methods
Published on: March 10, 2020
Causes of birth defects: lessons from history
1Menzies Centre for Health Policy, School of Public Health and Sydney Medical School, University of Sydney, Sydney, New South Wales, Australia. pallancaster@gmail.com
Congenital Anomalies
|December 17, 2010
Summary
Environmental factors like maternal infections and drugs can cause birth defects. Landmark studies identified rubella and thalidomide, with modern research relying on scientific teams for definitive evidence.
Area of Science:
- Teratology
- Environmental Health
- Clinical Medicine
Background:
- Recognition of environmental teratogens has grown since the mid-20th century.
- Early discoveries often stemmed from astute clinical observations.
Observation:
- Norman Gregg linked maternal rubella to congenital defects in 1941.
- William McBride and Widukind Lenz identified thalidomide's teratogenic effects.
- Marsh Edwards demonstrated hyperthermia-induced birth defects in animal models.
Findings:
- Individual clinicians historically identified initial teratogenic clues.
- Modern identification of environmental causes of birth defects increasingly involves collaborative research teams.
Implications:
- Continued vigilance by clinicians is crucial for early detection of new teratogens.
- Interdisciplinary teams of researchers and epidemiologists are essential for confirming environmental teratogens and informing public health strategies.
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