PGM1 deficiency: Substrate use during exercise and effect of treatment with galactose

N C Voermans, N Preisler, K L Madsen, M C H Janssen, B Kusters, N Abu Bakar, F Conte, V M L Lamberti, F Nusman, B G van Engelen, M van Scherpenzeel, J Vissing, D J Lefeber

21 Citations (Scopus)

Abstract

Mutations in PGM1 (phosphoglucomutase 1) cause Glycogen Storage Disease type XIV, which is also a congenital disorder of protein N-glycosylation. It presents throughout life as myopathy with additional systemic symptoms. We report the effect of oral galactose treatment during five months in a patient with biochemically and genetically confirmed PGM1 deficiency. The 12-minute-walking distance increased by 225 m (65%) and transferrin glycosylation was restored to near-normal levels. The exercise assessments showed a severe exercise intolerance due to a block in skeletal muscle glycogenolytic capacity and that galactose treatment tended to normalize skeletal muscle substrate use from fat to carbohydrates during exercise.

Original languageEnglish
JournalNeuromuscular Disorders
Volume27
Issue number4
Pages (from-to)370-376
ISSN0960-8966
DOIs
Publication statusPublished - 1 Apr 2017

Keywords

  • Exercise/physiology
  • Galactose/pharmacology
  • Glycogen Storage Disease/drug therapy
  • Humans
  • Male
  • Middle Aged

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