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The vascular architecture of the chick chorioallantoic membrane: sequential quantitative evaluation using corrosion
C Dimitropoulou1, W Malkusch, E Fait
1Department of Anatomy, University of Mainz, 55099 Mainz, Germany, Department of Pharmacology, Medical School, University of Patras, Patras 26110, Greece.
Angiogenesis
|October 1, 2003
Summary
This study quantifies blood vessel development in chick embryos using microvascular corrosion casting. Angiogenesis, or new blood vessel formation, shows distinct growth patterns in the chorioallantoic membrane (CAM) from day 8 to 18.
Area of Science:
- Developmental biology
- Angiogenesis research
- Vascular biology
Background:
- The chick chorioallantoic membrane (CAM) is a widely used model for studying angiogenesis.
- Previous studies using stereomicroscopy have limitations in accurately quantifying vascular development.
Purpose of the Study:
- To qualitatively and quantitatively evaluate angiogenesis in the CAM using microvascular corrosion casting.
- To provide a detailed insight into vascular development and establish a baseline for assessing angiogenic/antiangiogenic agents.
Main Methods:
- Microvascular corrosion casting technique applied to CAMs from embryonic day 8 to 18.
- Qualitative and quantitative analysis of vascular network development, including capillary plexus and vessel orders.
Main Results:
- Capillary plexus density rapidly increases until day 10, then stabilizes.
- First-order vessels increase in number and length from days 10-12.
- Higher-order vessels show continuous increase in number, with third-order vessels plateauing at day 12.
- Significant differences in vessel quantification compared to stereomicroscopy due to resolution limitations.
Conclusions:
- Microvascular corrosion casting offers superior resolution for detailed angiogenesis assessment in the CAM.
- The study elucidates specific developmental timelines for different vascular orders in the CAM.
- Provides a foundational dataset for future research on factors influencing blood vessel formation.