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Disease-specific markers for the mucopolysaccharidoses
Maria Fuller1, Tina Rozaklis, Steven L Ramsay
1Lysosomal Diseases Research Unit, Department of Genetic Medicine, Women's and Children's Hospital, 72 King William Road, North Adelaide, 5006, South Australia, Australia. maria.fuller@adelaide.edu.au.
Pediatric Research
|September 7, 2004
Summary
Researchers identified specific urinary oligosaccharide profiles for diagnosing mucopolysaccharidoses (MPS) subtypes. This method aids early detection and biochemical monitoring of MPS therapies, showing promise for patient management.
Area of Science:
- Biochemistry
- Genetics
- Mass Spectrometry
Background:
- Advancing treatment options for mucopolysaccharidoses (MPS) necessitate early diagnosis and biochemical monitoring.
- Current diagnostic methods may not fully address the need for precise subtype characterization and therapeutic assessment.
- Urinary oligosaccharides, derived from glycosaminoglycans, are potential biomarkers for MPS.
Purpose of the Study:
- To identify and characterize urinary oligosaccharide profiles for the early diagnosis and subtyping of MPS.
- To evaluate the utility of these oligosaccharide profiles for monitoring therapeutic interventions, such as bone marrow transplantation.
Main Methods:
- Analysis of 94 urine samples from 68 MPS patients and 26 controls using electrospray ionization-tandem mass spectrometry.
- Comparison of oligosaccharide profiles between MPS subtypes and controls.
- Evaluation of pre- and post-bone marrow transplantation urine samples.
Main Results:
- Specific oligosaccharide profiles were identified for most MPS subtypes, enabling accurate patient identification.
- The method successfully identified 68 patients and their subtypes, with exceptions for MPS IIIB and IIIC.
- Post-bone marrow transplantation, a significant reduction in diagnostic urinary oligosaccharides was observed.
Conclusions:
- Urinary glycosaminoglycan-derived oligosaccharide analysis offers a sensitive and specific screening method for early MPS identification.
- Oligosaccharide profiles provide disease-specific fingerprints for characterizing MPS subtypes and monitoring treatment efficacy.
- This approach supports biochemical monitoring of current and novel MPS therapies.