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The Smith-Lemli-Opitz syndrome.
1The Johns Hopkins University, Kennedy Krieger Institute, 707 North Broadway, Baltimore, Maryland 21205, USA.
Journal of Medical Genetics
|May 12, 2000
Summary
Smith-Lemli-Opitz syndrome (SLOS), a congenital malformation disorder, is now understood as a cholesterol metabolism defect. This discovery opens new treatment avenues and explains developmental abnormalities.
Area of Science:
- Biochemistry
- Developmental Biology
- Genetics
Background:
- Smith-Lemli-Opitz syndrome (SLOS) is a complex congenital malformation disorder.
- Recent research identified SLOS as an inborn error of cholesterol metabolism.
Purpose of the Study:
- To explore the implications of SLOS being a cholesterol metabolism defect.
- To explain the syndrome's developmental and behavioral characteristics.
Main Methods:
- Biochemical analysis of cholesterol metabolism.
- Review of embryogenesis and signaling pathways.
- Correlation of cholesterol's role with SLOS phenotypes.
Main Results:
- SLOS redefined as a disorder of cholesterol metabolism.
- Cholesterol's role in vertebrate embryogenesis, hedgehog signaling, and homeobox gene expression elucidated.
- Cholesterol's role in steroid hormone formation linked to SLOS behavioral issues.
Conclusions:
- Understanding SLOS as a cholesterol metabolism defect offers new therapeutic strategies.
- Cholesterol's critical role in development explains SLOS morphogenesis.
- Steroid hormone synthesis pathway disruptions contribute to SLOS behavioral phenotypes.