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Cellular composition of the telencephalic wall in human embryos
1Institute for Biological Research Sinisa Stankovic, Belgrade, Yugoslavia.
Early Human Development
|March 1, 1993
Summary
This study details early human brain development, tracking cellular changes in the telencephalic wall from 5 to 8 gestational weeks. It reveals the emergence of distinct cellular layers and neuronal morphologies during cortical plate formation.
Area of Science:
- Neuroscience
- Developmental Biology
- Human Embryology
Background:
- The early development of the human brain involves complex cellular reorganization and lamination.
- Understanding the cellular composition of the telencephalic wall is crucial for comprehending cortical development.
Purpose of the Study:
- To investigate the cellular composition and lamination of the human telencephalic wall during early embryonic development.
- To describe cellular differentiation and the formation of the cortical plate using Golgi impregnation.
Main Methods:
- Golgi impregnation technique applied to human embryos at 5, 6-7, and 7-8 gestational weeks.
- Microscopic analysis of cellular morphology and tissue lamination within the telencephalic wall.
Main Results:
- The telencephalic wall increases in width and complexity from 5 to 8 gestational weeks.
- Distinct zones (ventricular, intermediate, marginal) and cellular morphologies emerge, including bipolar cells and potential Cajal-Retzius neurons.
- The cortical plate and presubplate layers differentiate within the intermediate zone, accompanied by developing fiber bundles.
Conclusions:
- Golgi impregnation provides detailed insights into human cortical anlage development, supporting findings in animal models.
- This study elucidates the transition of ventricular cells into various neuronal shapes during human cortical development.