Dorothea Haas is a senior pediatrician and metabolic consultant at the University Children's Hospital of Heidelberg. Her clinical and research interests have focused on inborn errors of cholesterol biosynthesis.
Abnormal sterol metabolism in holoprosencephaly†
Article first published online: 26 JAN 2010
Copyright © 2010 Wiley-Liss, Inc.
American Journal of Medical Genetics Part C: Seminars in Medical Genetics
Special Issue: Holoprosencephaly
Volume 154C, Issue 1, pages 102–108, 15 February 2010
How to Cite
Haas, D. and Muenke, M. (2010), Abnormal sterol metabolism in holoprosencephaly. Am. J. Med. Genet., 154C: 102–108. doi: 10.1002/ajmg.c.30243
How to cite this article: Haas D, Muenke M. 2010. Abnormal sterol metabolism in holoprosencephaly. Am J Med Genet Part C Semin Med Genet 154C:102–108.
- Issue published online: 26 JAN 2010
- Article first published online: 26 JAN 2010
- Division of Intramural Research of the National Human Genome Research Institute
- National Institutes of Health
- Department of Health and Human Services
- cholesterol biosynthesis;
- cholesterol precursors;
- Smith–Lemli–Opitz syndrome;
- Shh signaling
Holoprosencephaly (HPE) is the most common structural malformation of the developing forebrain in humans. The HPE phenotype is extremely variable and the etiology is heterogeneous. Among a variety of embryological toxins that can induce HPE, inhibitors, and other pertubations of cholesterol biosynthesis have been shown to be important factors, most likely because cholesterol is required in the Sonic hedgehog signaling cascade. Decreased levels of maternal cholesterol during pregnancy increase the risk for preterm delivery, but they are not associated with congenital malformations. However, if the fetus is affected by an inborn error of endogenous cholesterol synthesis, a reduction of maternal cholesterol concentration and cholesterol transport over the placenta aggravates the phenotypic expression. Exposure to lipophilic statins in early pregnancy may be associated with a substantial risk for structural CNS defects. © 2010 Wiley-Liss, Inc.