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Related Experiment Videos

Newborn screening for lysosomal storage disorders.

P J Meikle1, E Ranieri, E M Ravenscroft

  • 1Department of Chemical Pathology, Women's and Children's Hospital, North Adelaide, Australia. pmeikle@medicine.adelaide.edu.au

The Southeast Asian Journal of Tropical Medicine and Public Health
|June 13, 2001
PubMed
Summary

Newborn screening for lysosomal storage disorders (LSD) can be achieved by measuring specific lysosomal proteins in blood spots. This two-tier approach enables early detection before irreversible damage occurs.

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Area of Science:

  • Biochemistry
  • Genetics
  • Pediatrics

Background:

  • Lysosomal storage disorders (LSD) are a group of over 40 genetic diseases affecting approximately 1:7,000 births.
  • Current treatments like bone marrow and enzyme replacement therapy are more effective with early diagnosis, before irreversible pathology develops.
  • Newborn screening is crucial for detecting LSD in the absence of family history, as early intervention is key.

Purpose of the Study:

  • To propose a newborn screening program for all LSD based on measuring lysosomal proteins in blood spots.
  • To identify and validate lysosomal proteins as reliable markers for LSD detection.
  • To develop a two-tier screening strategy for efficient and accurate LSD diagnosis.

Main Methods:

  • Identified potential lysosomal protein markers for LSD.

Related Experiment Videos

  • Measured protein levels in blood spots from Guthrie cards and plasma samples from over 300 individuals with 25 different LSD.
  • Proposed a two-tier screening system: time-resolved fluorescence immuno-quantification followed by tandem mass spectrometry.

    • Main Results:

    • Determined levels of identified lysosomal proteins in blood spots and plasma from LSD patients.
    • Demonstrated the feasibility of using these proteins as markers for LSD detection.
    • Established a basis for a comprehensive newborn screening program for LSD.

    Conclusions:

    • Measurement of specific lysosomal proteins in newborn blood spots can form the basis of a universal LSD screening program.
    • A two-tier system utilizing protein quantification and substrate analysis offers a robust diagnostic strategy.
    • Early detection through newborn screening is vital for effective management and improved outcomes in LSD patients.