Secondary skeletal involvement in Sanfilippo syndrome
1Department of Pediatric Sciences, Università Cattolica Sacro Cuore, Rome, Italy. drigante@libero.it
QJM : Monthly Journal of the Association of Physicians
|March 19, 2004
Summary
Sanfilippo syndrome (MPS type III) patients show low vitamin D and reduced bone density, suggesting osteoporosis and osteomalacia. These skeletal issues may stem from lifestyle factors, not the genetic defect itself.
Area of Science:
- Biochemistry
- Genetics
- Pediatrics
Background:
- Sanfilippo syndrome (mucopolysaccharidosis type III) is a rare genetic lysosomal storage disease.
- It results from defects in heparan sulfate catabolism.
- This impacts cellular function and overall health.
Purpose of the Study:
- To assess bone turnover and bone mineral density (BMD) in individuals with MPS type III.
- To identify potential skeletal complications associated with the syndrome.
Main Methods:
- A clinical and observational study was conducted.
- Serum bone markers and BMD were measured using dual-energy X-ray absorptiometry (DEXA) in three patients.
- Evaluation included assessment of bone formation and resorption markers.
Main Results:
- Patients exhibited low serum vitamin D levels.
- Significantly reduced BMD was observed at lumbar and femoral sites.
- Findings suggest a high risk for osteoporosis and osteomalacia.
Conclusions:
- Skeletal complications in MPS type III may be secondary to nutritional deficiencies and reduced mobility.
- These skeletal issues contribute to morbidity and increase fracture risk.
- Interventions are needed to manage and mitigate secondary skeletal involvement.
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