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Related Experiment Videos

Galactitol in galactosemia

C Jakobs1, S Schweitzer, B Dorland

  • 1Department of Paediatrics, Free University Hospital, Amsterdam, The Netherlands.

European Journal of Pediatrics
|January 1, 1995
PubMed
Summary
This summary is machine-generated.

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Galactosemia patients show high galactitol excretion, which normalizes partially after treatment. Even with treatment, galactitol levels in urine and plasma remain elevated in classical galactosemia, indicating persistent metabolic alterations.

Area of Science:

  • Biochemistry
  • Metabolic Disorders
  • Genetics

Background:

  • Galactosemia is an inherited metabolic disorder affecting galactose metabolism.
  • Galactitol, a sugar alcohol, is a byproduct of galactose metabolism and its accumulation is linked to galactosemia complications.
  • Age-dependent variations in urinary galactose and galactitol excretion are observed in healthy individuals.

Purpose of the Study:

  • To investigate urinary and plasma galactitol levels in patients with classical galactosemia and compound heterozygotes.
  • To assess the impact of treatment on galactitol excretion and plasma concentrations.
  • To compare galactitol levels between patients and age-matched controls.

Main Methods:

  • Quantification of urinary and plasma galactitol using established analytical techniques.

Related Experiment Videos

  • Comparison of galactitol levels in untreated patients, treated patients, and healthy controls.
  • Correlation analysis of galactitol levels with age and other metabolic markers.

    • Main Results:

    • Untreated classical galactosemia patients exhibit markedly elevated urinary and plasma galactitol levels, independent of galactose excretion.
    • Following treatment, urinary galactose normalizes, but galactitol excretion and plasma concentrations remain significantly above control ranges.
    • Compound heterozygotes show lower, but still elevated, galactitol levels which normalize post-treatment.

    Conclusions:

    • Elevated galactitol persists even after treatment in classical galactosemia, suggesting ongoing metabolic derangements.
    • Galactitol accumulation is a key biomarker in galactosemia, with distinct patterns in classical and milder forms.
    • Monitoring galactitol levels may be crucial for assessing treatment efficacy and long-term outcomes in galactosemia.