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Related Experiment Videos

Odd-numbered long-chain fatty acids in propionic acidaemia.

W Sperl1, C Murr, D Skladal

  • 1Department of Paediatrics, University of Innsbruck, Austria. w.sperl@lkasbg.gv.at

European Journal of Pediatrics
|February 1, 2000
PubMed
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Odd-numbered long-chain fatty acids (OLCFAs) are elevated in propionic acidaemia (PA) patients. Higher OLCFA levels correlate with a more severe disease course, suggesting potential as a biomarker for PA severity.

Area of Science:

  • Biochemistry
  • Metabolic Disorders
  • Clinical Chemistry

Background:

  • Propionic acidaemia (PA) is a metabolic disorder.
  • Increased intracellular propionyl-CoA in PA leads to elevated odd-numbered long-chain fatty acids (OLCFAs) in lipids.

Purpose of the Study:

  • To investigate OLCFA levels in erythrocyte membranes of PA patients.
  • To correlate OLCFA levels with clinical outcomes in early-onset PA.

Main Methods:

  • Erythrocyte membrane lipids were extracted and esterified.
  • Fatty acids were analyzed using capillary gas chromatography.
  • OLCFA percentages (C15:0, C17:0, C17:1) were calculated relative to total fatty acids (C14-C22).

Main Results:

Related Experiment Videos

  • Five early-onset PA patients were studied over 1-8 years.
  • Patients with a stable course (pccBC group) had OLCFA levels typically below 1.9%.
  • Patients with a severe course (pccA group) exhibited higher median OLCFA levels (around 2.2%) with a broader range.

    • Conclusions:

    • OLCFA concentrations are elevated in PA patients.
    • Higher OLCFA levels are associated with a more severe clinical phenotype in PA.
    • Further prospective studies are needed to confirm OLCFA's utility in assessing PA severity and guiding management.