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Teratogenic effects of a chelating agent and their prevention by zinc
Science (New York, N.Y.)
|July 2, 1971
Insights
Ethylenediaminetetraacetic acid (EDTA) exposure during pregnancy caused birth defects in rats. Supplementing with zinc prevented these adverse reproductive outcomes, highlighting zinc's crucial role.
Area of Science:
- Reproductive toxicology
- Developmental biology
- Nutritional science
Background:
- Chelating agents can interfere with essential mineral absorption.
- Ethylenediaminetetraacetic acid (EDTA) is a known chelating agent.
- Pregnancy is a critical period for fetal development, sensitive to nutritional deficiencies.
Purpose of the Study:
- To investigate the effects of ethylenediaminetetraacetic acid (EDTA) exposure on reproduction and fetal development in rats.
- To determine if zinc supplementation can prevent EDTA-induced developmental abnormalities.
Main Methods:
- Female rats were administered ethylenediaminetetraacetic acid (EDTA) during gestation (days 6-21).
- Some groups received simultaneous supplementation with dietary zinc (1000 ppm).
- Offspring were examined for congenital malformations and reproductive outcomes.
Main Results:
- EDTA ingestion during pregnancy led to significant reproductive impairment.
- All full-term offspring from EDTA-exposed mothers exhibited gross congenital malformations.
- Concurrent zinc supplementation completely prevented the EDTA-induced malformations.
Conclusions:
- Ethylenediaminetetraacetic acid (EDTA) poses a risk to fetal development during pregnancy.
- Zinc is essential for preventing EDTA-induced teratogenicity.
- Dietary zinc supplementation can mitigate the adverse reproductive effects of EDTA exposure.
Abstract:
Ingestion of a chelating agent (ethylenediaminetetraacetic acid) by female rats during pregnancy impaired reproduction and resulted in congenitally malformed young. When ethylenediaminetetraacetic acid was fed from days 6 to 21 of gestation, all of the full-term young had gross congenital malformations. These effects were prevented by simultaneous supplementation with 1000 parts per million of dietary zinc.