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[Cellular and molecular differences in cleft palate susceptibility in mice]
M A Montenegro1, S Domínguez, H Palomino
1Departamento de Morfología Experimental, Facultad de Medicina, Universidad de Chile, Santiago de Chile.
Revista Medica De Chile
|March 1, 1995
Summary
Genetic differences in hyaluronic acid and glycoproteins influence cleft palate susceptibility. Resistant mouse strains show higher extracellular matrix, while susceptible strains have basal membrane defects, indicating key molecular factors.
Area of Science:
- Developmental biology
- Genetics
- Molecular biology
Context:
- Cleft palate is a common birth defect with complex etiology.
- Mouse models are crucial for studying genetic susceptibility to craniofacial malformations.
- Glucocorticoids and NSAIDs can induce cleft palate in susceptible strains.
Purpose:
- To identify candidate genes associated with cleft palate susceptibility.
- To investigate the role of extracellular matrix molecules in palate development.
- To compare molecular differences between susceptible and resistant mouse strains.
Summary:
- Hyaluronic acid and glycoprotein levels were analyzed in mouse embryos (A/Sn and C/57 BL strains) at 13 and 14 days gestation.
- Resistant strains exhibited higher extracellular matrix content, primarily hyaluronic acid, in vertical palatine processes at 13 days.
- Susceptible strains showed basal membrane interruptions with reduced glycoproteins in medial palatine epithelium at 14 days.
Impact:
- Identifies specific molecular differences linked to genetic susceptibility to cleft palate.
- Provides insights into the developmental mechanisms underlying palate formation.
- Suggests potential molecular targets for understanding and preventing cleft palate.