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Carbonic anhydrase II expression pattern in mouse embryonic and fetal heart
1Institute of Histology and Embryology, Lausanne, Switzerland. Mauricette.Vuillemin.@ihe.unil.ch
Anatomy and Embryology
|March 1, 1997
Summary
Carbonic anhydrase II is a marker for activated endothelial cells during heart development. Its expression patterns reveal roles in cardiac cushion formation and coronary vessel development in mouse embryos.
Area of Science:
- Cardiovascular Biology
- Developmental Biology
- Biochemistry
Background:
- Carbonic anhydrase II (CA-II) is an enzyme crucial for various physiological processes.
- Understanding CA-II's role in cardiac organogenesis is essential for insights into heart development.
Purpose of the Study:
- To investigate the spatiotemporal localization of carbonic anhydrase II during mouse embryonic and fetal heart development.
- To identify potential functions of CA-II in cardiac organogenesis, particularly in endothelial and mesenchymal cells.
Main Methods:
- Immunocytolabeling on serial sections of mouse embryonic and fetal hearts.
- Fixation using 4% paraformaldehyde and cryosectioning.
- Analysis of CA-II expression patterns at different embryonic days (ed).
Main Results:
- CA-II expression decreased in endocardium-derived cells during early heart development (10-12 ed).
- Differential CA-II distribution was observed in atrioventricular cushions and conotruncal ridges.
- CA-II was detected in specific myocardial regions (13-16 ed) and coronary vessel endothelium (18-20 ed).
Conclusions:
- Carbonic anhydrase II expression patterns suggest its involvement in endothelial cell activation and migration during cardiac cushion formation.
- CA-II may serve as a marker for endothelial-derived mesenchymal cells exhibiting active behaviors like invasion and proliferation.
- The study highlights CA-II's dynamic role throughout cardiac organogenesis, from cushion development to coronary vasculature formation.