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Teratogenicity

Teratogenicity

The ability of a drug to produce structural deformations and functional abnormalities in the developing embryo or the fetus is called teratogenicity, and the drug producing this effect is known as a teratogen. Teratogenic effects include stillbirth, miscarriage, intrauterine growth restriction, and neurocognitive delay. A teratogen may affect the embryo at different stages of development, which is important in determining the type and extent of the damage. During blastocyst formation, the early...

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Related Experiment Video

Updated: Jul 4, 2025

Preparation of Rat Serum Suitable for Mammalian Whole Embryo Culture

Preparation of Rat Serum Suitable for Mammalian Whole Embryo Culture

Published on: August 3, 2014

Developmental Toxicity Using the Rat Whole Embryo Culture.

Zeliha Fazliogullari¹

¹Department of Anatomy, Faculty of Medicine, Selcuk University, Konya, Turkey.

Methods in Molecular Biology (Clifton, N.J.)

|January 29, 2024

Summary

The rat whole embryo culture method allows direct observation of embryogenesis, aiding in the study of drug effects on embryonic development. This in vitro technique supports normal development rates for evaluating toxic or teratogenic impacts.

Keywords:

Development In vitro Rat Teratogenicity Toxicity Whole embryo culture

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Last Updated: Jul 4, 2025

Preparation of Rat Serum Suitable for Mammalian Whole Embryo Culture

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Published on: August 3, 2014

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Area of Science:

Developmental Biology
Toxicology
Pharmacology

Background:

Investigating the impact of external agents on embryonic development is crucial.
Alternative testing methods are needed to assess drug toxicity and teratogenicity.
The rat whole embryo culture (RWEC) offers a model for studying early development.

Purpose of the Study:

To describe the rat whole embryo culture method for evaluating agents' effects on embryonic development.
To highlight the advantages of RWEC for observing embryogenesis directly.
To establish a standardized protocol for assessing developmental toxicity.

Main Methods:

Rat embryos are explanted at 9.5 days of gestation.
Conceptuses are cultured for 48 hours on a rotating platform using maternal serum as medium.
Test agents are added to the culture medium for separate evaluation.

Main Results:

Explanted rat conceptuses exhibit in utero-equivalent growth rates in culture.
The RWEC system permits direct morphological assessment of embryogenesis.
This method allows for the evaluation of specific chemicals or agents on developing embryos.

Conclusions:

Rat whole embryo culture is a valuable in vitro tool for studying normal embryonic development.
The method facilitates the direct observation and morphological evaluation of embryogenesis.
RWEC is effective for assessing the teratogenic or toxic potential of various compounds during early development.