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Axial interactions during neurogenesis in dysraphic mice
1Division of Anatomy, School of Medicine, University of California, San Diego, La Jolla 92093.
Anatomy and Embryology
|January 1, 1989
Summary
In loop-tail mutant mouse embryos, midline structures separated abnormally. Fibronectin and laminin presence at separation sites suggest they aren't the cause of this developmental defect.
Area of Science:
- Developmental biology
- Genetics
- Histochemistry
Background:
- The loop-tail (Lp) mouse mutant exhibits defects in midline axial structures during embryonic development.
- Understanding the molecular basis of these defects is crucial for developmental biology research.
Purpose of the Study:
- To investigate the spatial relationships of midline axial structures in normal and Lp mutant mouse embryos.
- To determine the distribution of fibronectin and laminin in these structures during development.
Main Methods:
- Comparative analysis of normal and Lp mutant mouse embryos at 9 days of gestation.
- Immunofluorescence histochemistry to detect fibronectin and laminin distribution.
Main Results:
- Abnormal embryos showed variable separation of midline structures like the notochord and neural folds.
- Fibronectin and laminin were present at tissue interfaces in abnormal embryos and areas of contact in normal embryos.
Conclusions:
- The distribution of fibronectin and laminin in Lp mutant embryos does not indicate a causal role in the abnormal spatial relationships of midline structures.
- These glycoproteins may not be fundamentally involved in the etiology of the observed dysraphia.