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Epidermal development in the growth retarded fetal rat
S B Hoath1, W L Pickens, S F Sells
1Department of Pediatrics & Dermatology, Children's Hospital Medical Center, Cincinnati, Ohio 45267.
Journal of Developmental Physiology
|January 1, 1990
Summary
Intrauterine growth retardation (IUGR) in fetal rats leads to thinner skin with reduced epidermal layers and proteins. This study reveals impaired epidermal development in IUGR, affecting fetal skin structure and keratinization.
Area of Science:
- Developmental Biology
- Dermatology
- Fetal Medicine
Background:
- Intrauterine growth retardation (IUGR) in humans is linked to epidermal abnormalities.
- The precise impact of IUGR on fetal skin development requires further investigation.
Purpose of the Study:
- To investigate the effects of IUGR on epidermal development in fetal rats.
- To analyze changes in epidermal thickness, cellularity, and protein content.
Main Methods:
- IUGR was induced in rats via uterine artery and vein ligation.
- Epidermal structure was examined using light and electron microscopy.
- DNA, soluble protein, and specific keratin/filaggrin content were quantified.
Main Results:
- IUGR fetuses exhibited significantly reduced body weight and epidermal thickness.
- A marked decrease in the stratum granulosum and stratum corneum was observed.
- Epidermal DNA, soluble protein, keratin, and filaggrin levels were significantly lower in IUGR fetuses.
Conclusions:
- IUGR significantly impairs fetal rat epidermal development.
- This leads to a thin, hypoplastic epidermis with reduced keratinization.
- Findings suggest IUGR affects key structural and differentiation markers in fetal skin.