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Updated: Aug 10, 2026
09:04
Comprehensive Evaluation of the Effectiveness and Safety of Placenta-Targeted Drug Delivery Using Three Complementary Methods
Published on: September 10, 2018
Prevention of transplacentally induced malignant diseases
Oncology
|January 1, 1984
Summary
Vitamin A (retinol palmitate) supplementation significantly reduced leukemia incidence by 50% in a study involving transplacental ENU exposure. However, vitamin A did not affect lung adenomas in the same experimental model.
Area of Science:
- Oncology
- Nutritional Science
- Toxicology
Background:
- Transplacental exposure to N-ethyl-N-nitrosourea (ENU) is a known inducer of leukemia in experimental models.
- Vitamin A (retinol palmitate) is being investigated for its potential chemopreventive properties against certain cancers.
Purpose of the Study:
- To evaluate the effect of vitamin A administration on the incidence of transplacentally induced leukemias.
- To determine if vitamin A influences the development of lung adenomas in the same experimental setup.
Main Methods:
- Mice were exposed transplacentally to ENU.
- Following ENU exposure, vitamin A was administered as a suspension in drinking water.
- Leukemia incidence and lung adenoma development were monitored.
Main Results:
- Vitamin A administration resulted in a 50% reduction in leukemia incidence.
- A corresponding decrease in leukemia-related mortality was observed.
- Vitamin A had no significant effect on the incidence of lung adenomas.
Conclusions:
- Vitamin A (retinol palmitate) demonstrates chemopreventive potential against transplacentally induced leukemias.
- The efficacy of vitamin A may be specific to certain cancer types, as it did not impact lung adenoma formation in this model.
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