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Related Experiment Videos

[Glycogenoses type 1b and 1c].

L de Parscau1, P Guibaud, I Maire

  • 1Unité d'étude des maladies métaboliques, Hôpital Debrousse, Lyon.

Pediatrie
|January 1, 1988
PubMed
Summary
This summary is machine-generated.

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Type 1b glycogen storage disease involves impaired glucose-6-phosphate transport, causing stomatitis and infections. Detergent treatment can restore glucose-6-phosphatase activity, but neutropenia persists despite metabolic control.

Area of Science:

  • Biochemistry
  • Genetics
  • Pediatrics

Context:

  • Type 1 glycogen storage diseases (GSDs) are inherited metabolic disorders affecting glucose metabolism.
  • Type 1b GSD involves specific defects in microsomal glucose transport, differentiating it from other subtypes.
  • This subtype presents unique clinical challenges beyond the typical GSD symptoms.

Purpose:

  • To describe the clinical and biochemical characteristics of type 1b glycogen storage disease.
  • To highlight the role of glucose-6-phosphatase and phosphate transport in GSD type 1b.
  • To differentiate type 1b GSD from the rarer type 1c and the more common type 1a.

Summary:

  • Type 1b glycogen storage disease is characterized by impaired transport of glucose-6-phosphate across microsomal membranes.

Related Experiment Videos

  • Patients exhibit GSD type 1a manifestations plus recurrent stomatitis, frequent infections, and inflammatory bowel disease due to neutropenia and neutrophil dysfunction.
  • Glucose-6-phosphatase activity is diminished in fresh liver tissue but normalized after detergent treatment, suggesting a transport defect.

    • Impact:

    • Provides a clearer understanding of the pathophysiology of type 1b GSD.
    • Emphasizes the distinct clinical features and complications associated with this subtype.
    • Informs diagnostic approaches and management strategies for patients with GSD type 1b, particularly regarding neutropenia.