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Morphogenetic events influencing corneal maturation, development, and transparency: Light and electron microscopic
Nagwa Ibrahim1, Abdalla Hifny1, Ruwaida Elhanbaly1
1Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Assiut University, Assiut, Egypt.
Microscopy Research and Technique
|January 25, 2023
Summary
Rabbit cornea development involves complex cell differentiation and migration, leading to transparency. Key structures like Bowman
Area of Science:
- Ophthalmology
- Developmental Biology
- Histology
Background:
- Corneal development is a complex process with dual origins from surface ectoderm and neural crest cells.
- Understanding rabbit cornea morphogenesis is crucial for insights into ocular development and disease.
Purpose of the Study:
- To detail the spatiotemporal morphogenesis of the rabbit cornea from fetal to postnatal stages.
- To analyze the differentiation and structural organization of corneal layers.
Main Methods:
- Light and electron microscopy were employed to examine corneal structure.
- Immunohistochemical analysis, specifically for VEGF, was used to assess developmental changes.
Main Results:
- Corneal development initiated on day 12, with epithelium differentiation by day 13 and stroma by day 16.
- Key structures like Bowman's and Descemet's membranes formed at specific gestational periods.
- Vascular Endothelial Growth Factor (VEGF) expression peaked postnatally before declining, correlating with stromal avascularity and transparency.
Conclusions:
- Multiple morphogenetic events orchestrate rabbit cornea maturation and transparency.
- Telocytes were observed within the developing corneal epithelium.
- VEGF expression dynamics play a role in corneal avascularization and functional development.
