Abstract
Genetic defects of enzymes that are involved in the intralysosomal degradation of mucopolysaccharides (Fig. 36.1) and oligosaccharides lead to chronic and progressive storage disorders that share many clinical features varying from facial dysmorphism, bone and joint dysplasias, corneal clouding, hepatosplenomegaly, dwarfism, neurological abnormalities, mental regression and a reduced life span to an almost normal phenotype and life expectancy. Mucopolysaccharidoses (MPS) and oligosaccharidoses are transmitted in an autosomal-recessive manner, except for the X-linked MPS-II. Diagnosis of these lysosomal storage disorders can be made by enzyme assays in serum, leukocytes or fibroblasts. Partially degraded mucopolysaccharides and oligosaccharide fragments are excreted in the urine. Prenatal diagnosis is possible. As yet, treatment is mostly supportive. In some cases (especially in MPS-I), bone-marrow transplantation may improve the clinical course, but the value of this procedure is limited by the high risk and uncertain long-term neurological outcome. In the future, recombinant enzymes produced by genetically engineered cell lines may be available for MPS patients, at least for those in whom the central nervous system is not involved. Other therapeutic strategies, such as gene transfer into hematopoietic cells, are under consideration.
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Beck, M. (2000). Mucopolysaccharidoses and Oligosaccharidoses. In: Fernandes, J., Saudubray, JM., Van den Berghe, G. (eds) Inborn Metabolic Diseases. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04285-4_36
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DOI: https://doi.org/10.1007/978-3-662-04285-4_36
Publisher Name: Springer, Berlin, Heidelberg
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