General Physiology and Biophysics Vol.28, No.1, p.08-15, 2009
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Title: Spectrum of DHCR7 mutations in Slovak patients with Smith-Lemli-Opitz syndrome and detection of common mutations by PCR-based assays |
Author: Katarina Kolejakova, Robert Petrovic, Jan Futas, Peter Turcani, Darina Durovcikova, Jan Chandoga |
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Abstract: The Smith-Lemli-Opitz syndrome (SLOS), an autosomal recessive disorder associated with multiple developmental malformations, is caused by a large spectrum of mutations in the DHCR7 gene. Mutations in the DHCR7 gene lead to a 7-dehydrocholesterol reductase deficiency, which is the final enzyme in the pathway of the cholesterol biosynthesis. Reduced cholesterol levels and elevated concentrations of its precursor 7-dehydrocholesterol in plasma and tissues are the major biochemical hallmarks of this disorder. In all patients a biochemical analysis of blood sterols using the gas chromatography/mass spectrometry was performed to confirm the clinical diagnosis of SLOS. We have also determined the mutational spectrum of DHCR7 gene in 17 Slovak patients. We identified six different mutations: nonsense mutation W151X and missense mutations V326L, L109P, G410S, R352Q, Y432C. Mutations W151X and V326L accounted for 76% of the SLOS alleles in Slovak population. The Slovak mutational spectrum is similar to that observed in other Central European countries. We also report simple polymerase chain reaction (PCR)-based assays that allow efficient and rapid mutation analysis.
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Keywords: Smith-Lemli-Opitz syndrome — 7-dehydrocholesterol — DHCR7 gene — DHCR7 mutation analysis — Slovak patients |
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Year: 2009, Volume: 28, Issue: 1 |
Page From: 8, Page To: 15 |
doi:10.4149/gpb_2009_01_8
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