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Related Experiment Video

Updated: Mar 28, 2026

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854

[Sanfilippo Syndrome].

L A Osipova, L M Kuzenkova, L S Namazova-Baranova

    Vestnik Rossiiskoi Akademii Meditsinskikh Nauk
    |December 30, 2015
    PubMed
    Summary

    Sanfilippo syndrome (mucopolysaccharidosis type III) is a common lysosomal disorder causing cognitive decline due to heparan sulfate buildup. Current treatments are ineffective, but research into gene, substrate reduction, and enzyme replacement therapies offers future hope.

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    Area of Science:

    • Biochemistry
    • Genetics
    • Neurology

    Context:

    • Sanfilippo syndrome (mucopolysaccharidosis type III) is a prevalent lysosomal storage disorder.
    • It results from defective heparan sulfate catabolism, leading to substrate accumulation in the central nervous system.
    • This accumulation causes progressive cognitive decline, dementia, and behavioral abnormalities.

    Purpose:

    • To provide a comprehensive overview of Sanfilippo syndrome.
    • To highlight diagnostic challenges, including misdiagnosis and false-negative assays.
    • To discuss the current lack of effective treatments and emerging therapeutic research.

    Summary:

    • Sanfilippo syndrome is characterized by the accumulation of undegraded heparan sulfate in the CNS.
    • Clinical presentation includes severe cognitive impairment and behavioral issues, often leading to misdiagnosis.
    • Enzyme assays are definitive for diagnosis, but current treatment options are limited.

    Impact:

    • Misdiagnosis is common due to overlapping symptoms with developmental disorders.
    • Low urinary glycosaminoglycans can lead to false-negative diagnostic tests.
    • Ongoing research in gene therapy, substrate reduction, and enzyme replacement holds promise for future cures.