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Journal of Inherited Metabolic Disease

, Volume 5, Issue 4, pp 197–203 | Cite as

Metabolism of collagen in aspartylglycosaminuria: Decreased synthesis by cultured fibroblasts

  • K. Näntö-Salonen
  • R. Penttinen
Article

Abstract Fibroblasts from patients with aspartylglycosaminuria (AGU) and from age-matched healthy controls were studied in culture. The rate of synthesis of collagenous proteins was lower in AGU fibroblasts than in control cells despite the fact that the growth rates and growth patterns were similar. Qualitative differences in culture media proteins between AGU and control cultures were not revealed by gradient gel electrophoresis or by CM-cellulose chromatography after pepsin treatment. DEAE-cellulose chromatography of AGU culture media components showed that they contained more [3H]glucosamine-labelled glycoproteins than the control cultures

Decreased collagen synthesis may explain the connective tissue symptoms (e.g. skeletal deformations and susceptibility to hernias) frequently present in AGU patients. Products from the incomplete intracellular degradation of glycoproteins can interfere with collagen synthesis in AGU. Aspartylglycosaminuria might thus provide a model for studying the regulation of collagen synthesis.

Keywords

Control Culture Qualitative Difference Culture Media Collagen Synthesis Media Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© SSIEM and MTP Press Limited 1982

Authors and Affiliations

  • K. Näntö-Salonen
    • 1
  • R. Penttinen
    • 1
  1. 1.Department of Medical ChemistryUniversity of TurkuTurku 52Finland

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