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Embryotoxicity and teratogenicity study with alpha-cyclodextrin in rabbits.
D H Waalkens-Berendsen1, A E Smits-Van Prooije, A Bär
1TNO Nutrition and Food Research, P.O. Box 360, 3700 AJ Zeist, The Netherlands.
Regulatory Toxicology and Pharmacology : RTP
|July 22, 2004
Summary
Alpha-cyclodextrin (alpha-CD) is safe for pregnant rabbits, showing no adverse effects on maternal health or fetal development. This study confirms alpha-CD is not embryotoxic, fetotoxic, or teratogenic up to 20% dietary concentration.
Area of Science:
- Reproductive toxicology
- Developmental toxicology
- Pharmacology
Background:
- Alpha-cyclodextrin (alpha-CD) is a cyclic oligosaccharide with various applications.
- Assessing the safety of dietary compounds during pregnancy is crucial.
Purpose of the Study:
- To evaluate the embryotoxic, fetotoxic, and teratogenic potential of dietary alpha-cyclodextrin in pregnant rabbits.
Main Methods:
- Pregnant New Zealand White rabbits received diets containing 0%, 5%, 10%, or 20% alpha-CD, or 20% lactose.
- Treatment occurred from day 0 to day 29 of gestation.
- Maternal health, reproductive parameters, and fetal development were assessed.
Main Results:
- Dietary alpha-CD was well tolerated, with no maternal toxicity observed even at the highest dose (up to 7.5 g/kg bw/day).
- No adverse effects on maternal reproductive performance, including implantation, resorption, or litter size, were noted.
- Fetal examinations revealed no malformations, anomalies, or variations attributable to alpha-CD exposure.
Conclusions:
- Dietary alpha-cyclodextrin is safe for pregnant rabbits at concentrations up to 20%.
- Alpha-cyclodextrin does not negatively impact maternal reproductive performance or fetal development.
- The study concludes alpha-CD is not embryotoxic, fetotoxic, or teratogenic in this model.