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Published on: November 20, 2015
Postnatal and prenatal diagnosis of Maroteaux-Lamy syndrome
Insights
This study details the clinical progression of a boy with Maroteaux-Lamy syndrome, a rare genetic disorder. Prenatal diagnosis was successfully achieved through enzyme analysis of amniotic fluid cells during a subsequent pregnancy.
Area of Science:
- Medical Genetics
- Biochemistry
- Pediatrics
Background:
- Maroteaux-Lamy syndrome (MPS VI) is a rare lysosomal storage disorder.
- It is characterized by a deficiency of the enzyme arylsulfatase B.
- This deficiency leads to the accumulation of glycosaminoglycans, such as dermatan sulfate.
Purpose of the Study:
- To describe the clinical course of a patient with Maroteaux-Lamy syndrome up to age six.
- To demonstrate the utility of prenatal diagnosis for Maroteaux-Lamy syndrome.
Main Methods:
- Clinical observation and assessment of a pediatric patient.
- Biochemical analysis of urinary dermatan sulfate excretion.
- Enzyme assays for arylsulfatase B activity in leukocytes and skin fibroblasts.
- Prenatal diagnosis via enzyme analysis of cultured amniotic fluid cells.
Main Results:
- The patient exhibited characteristic clinical features of Maroteaux-Lamy syndrome.
- Increased urinary excretion of dermatan sulfate and deficient arylsulfatase B activity were confirmed.
- Prenatal diagnosis of an affected fetus was successfully performed in a subsequent pregnancy.
Conclusions:
- Maroteaux-Lamy syndrome presents with specific clinical and biochemical markers.
- Enzyme analysis of amniotic fluid cells is a reliable method for prenatal diagnosis.
- Early diagnosis and monitoring are crucial for managing Maroteaux-Lamy syndrome.
Abstract:
The clinical course up to 6 years of age is described in a boy with Maroteaux-Lamy syndrome as indicated by the clinical characteristics: increased urinary excretion of dermatan sulphate and deficiency of arylsulphatase B in leucocytes and cultured skin fibroblasts. A subsequent pregnancy of the mother was monitored by enzyme analysis of culture amniotic fluid cells. The prenatal diagnosis of an affected fetus was made and confirmed after termination of the pregnancy.
