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Related Experiment Videos

Depolymerization of heparin by complexed ferrous ions.

B Lahiri1, P S Lai, M Pousada

  • 1Department of Biochemistry and Molecular Biology, New York Medical College, Valhalla 10595.

Archives of Biochemistry and Biophysics
|February 14, 1992
PubMed
Summary
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Heparin depolymerization using ferrous-EDTA and ascorbic acid yields smaller fragments. Longer fragments (≥20 units) retain significant anticoagulant activity, crucial for therapeutic applications.

Area of Science:

  • Biochemistry
  • Glycosaminoglycan Chemistry

Background:

  • Heparin is a vital glycosaminoglycan with anticoagulant properties.
  • Understanding heparin's depolymerization is key to developing modified anticoagulants.

Purpose of the Study:

  • To investigate the depolymerization of porcine heparin.
  • To characterize the resulting fragments and their anticoagulant activity.

Main Methods:

  • Treatment of porcine heparin with ferrous-EDTA and ascorbic acid.
  • Analysis of depolymerization products using gel filtration and electrophoresis.
  • Assay of anticoagulant potency via factor Xa neutralization.

Main Results:

  • Heparin depolymerization produced oligosaccharides, with 65% under 30 sugar units.

Related Experiment Videos

  • EDTA and ascorbic acid were essential for significant depolymerization.
  • Fractions with ≥20 sugar units retained substantial anticoagulant potency.

    • Conclusions:

    • Ferrous-EDTA and ascorbic acid effectively depolymerize heparin.
    • Heparin fragments of specific lengths retain anticoagulant properties.
    • This controlled degradation offers potential for novel anticoagulant development.