Related Experiment Video
Updated: Jun 19, 2026

02:22
Full-Endoscopic Surgery for Hypothalamic Hamartoma Resection
Published on: April 12, 2024
[Smith-Lemli-Opitz syndrome--case report, diagnostics and therapeutic options]
A Oberthür1, R Heller, M Vogel
1Klinik und Poliklinik für Kinderheilkunde, Universität zu Köln, Pädiatrische Intensivstation, Köln. andre.oberthuer@uk-koeln.de
Zeitschrift Fur Geburtshilfe Und Neonatologie
|October 27, 2009
Summary
Smith-Lemli-Opitz syndrome (SLOS), a genetic disorder affecting cholesterol synthesis, presents with growth and mental retardation. This case highlights the challenges in treating SLOS, even with cholesterol supplementation and statins.
Area of Science:
- Biochemistry
- Genetics
- Developmental Biology
Background:
- Smith-Lemli-Opitz syndrome (SLOS) is an autosomal-recessive disorder impacting cholesterol biosynthesis due to mutations in the 7-dehydrocholesterol reductase (DHCR7) gene.
- This genetic defect leads to cholesterol deficiency and accumulation of toxic precursors, causing a spectrum of developmental abnormalities.
Observation:
- A female infant presented with intrauterine growth restriction and typical SLOS dysmorphic features, including cardiovascular defects and syndactyly.
- The patient exhibited characteristic biochemical markers of SLOS upon diagnosis.
Findings:
- Despite therapeutic intervention with oral cholesterol and simvastatin, the patient succumbed to the disease at 12 weeks of age.
- This case underscores the severe prognosis and limited therapeutic efficacy of current strategies for SLOS.
Implications:
- Further research is crucial to develop more effective treatments for SLOS, focusing on early diagnosis and intervention.
- Understanding the complex pathophysiology of cholesterol metabolism disorders is vital for improving patient outcomes in SLOS.
Related Concept Videos
Pleiotropy
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
Lysosomal Hydrolases
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
